Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

35 files changed, 12731 insertions, 0 deletions

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
new file mode 100644
index 000000000000..07a56ff61494
--- /dev/null
+++ b/arch/arm/kernel/Makefile
@@ -0,0 +1,38 @@
+#
+# Makefile for the linux kernel.
+#
+
+AFLAGS_head.o := -DTEXTADDR=$(TEXTADDR) -DDATAADDR=$(DATAADDR)
+
+# Object file lists.
+
+obj-y		:= arch.o compat.o dma.o entry-armv.o entry-common.o irq.o   \
+		   process.o ptrace.o semaphore.o setup.o signal.o sys_arm.o \
+		   time.o traps.o
+
+obj-$(CONFIG_APM)		+= apm.o
+obj-$(CONFIG_ARCH_ACORN)	+= ecard.o 
+obj-$(CONFIG_FOOTBRIDGE)	+= isa.o
+obj-$(CONFIG_FIQ)		+= fiq.o
+obj-$(CONFIG_MODULES)		+= armksyms.o module.o
+obj-$(CONFIG_ARTHUR)		+= arthur.o
+obj-$(CONFIG_ISA_DMA)		+= dma-isa.o
+obj-$(CONFIG_PCI)		+= bios32.o
+obj-$(CONFIG_SMP)		+= smp.o
+
+obj-$(CONFIG_IWMMXT)		+= iwmmxt.o
+AFLAGS_iwmmxt.o			:= -Wa,-mcpu=iwmmxt
+
+ifneq ($(CONFIG_ARCH_EBSA110),y)
+  obj-y		+= io.o
+endif
+
+head-y			:= head.o
+obj-$(CONFIG_DEBUG_LL)	+= debug.o
+
+extra-y := $(head-y) init_task.o vmlinux.lds
+
+# Spell out some dependencies that aren't automatically figured out
+$(obj)/entry-armv.o: 	$(obj)/entry-header.S include/asm-arm/constants.h
+$(obj)/entry-common.o: 	$(obj)/entry-header.S include/asm-arm/constants.h \
+			$(obj)/calls.S
diff --git a/arch/arm/kernel/apm.c b/arch/arm/kernel/apm.c
new file mode 100644
index 000000000000..b0bbd1e62ebb
--- /dev/null
+++ b/arch/arm/kernel/apm.c
@@ -0,0 +1,610 @@
+/*
+ * bios-less APM driver for ARM Linux 
+ *  Jamey Hicks <jamey@crl.dec.com>
+ *  adapted from the APM BIOS driver for Linux by Stephen Rothwell (sfr@linuxcare.com)
+ *
+ * APM 1.2 Reference:
+ *   Intel Corporation, Microsoft Corporation. Advanced Power Management
+ *   (APM) BIOS Interface Specification, Revision 1.2, February 1996.
+ *
+ * [This document is available from Microsoft at:
+ *    http://www.microsoft.com/hwdev/busbios/amp_12.htm]
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/miscdevice.h>
+#include <linux/apm_bios.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/init.h>
+#include <linux/completion.h>
+
+#include <asm/apm.h> /* apm_power_info */
+#include <asm/system.h>
+
+/*
+ * The apm_bios device is one of the misc char devices.
+ * This is its minor number.
+ */
+#define APM_MINOR_DEV	134
+
+/*
+ * See Documentation/Config.help for the configuration options.
+ *
+ * Various options can be changed at boot time as follows:
+ * (We allow underscores for compatibility with the modules code)
+ *	apm=on/off			enable/disable APM
+ */
+
+/*
+ * Maximum number of events stored
+ */
+#define APM_MAX_EVENTS		16
+
+struct apm_queue {
+	unsigned int		event_head;
+	unsigned int		event_tail;
+	apm_event_t		events[APM_MAX_EVENTS];
+};
+
+/*
+ * The per-file APM data
+ */
+struct apm_user {
+	struct list_head	list;
+
+	unsigned int		suser: 1;
+	unsigned int		writer: 1;
+	unsigned int		reader: 1;
+
+	int			suspend_result;
+	unsigned int		suspend_state;
+#define SUSPEND_NONE	0		/* no suspend pending */
+#define SUSPEND_PENDING	1		/* suspend pending read */
+#define SUSPEND_READ	2		/* suspend read, pending ack */
+#define SUSPEND_ACKED	3		/* suspend acked */
+#define SUSPEND_DONE	4		/* suspend completed */
+
+	struct apm_queue	queue;
+};
+
+/*
+ * Local variables
+ */
+static int suspends_pending;
+static int apm_disabled;
+
+static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue);
+static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue);
+
+/*
+ * This is a list of everyone who has opened /dev/apm_bios
+ */
+static DECLARE_RWSEM(user_list_lock);
+static LIST_HEAD(apm_user_list);
+
+/*
+ * kapmd info.  kapmd provides us a process context to handle
+ * "APM" events within - specifically necessary if we're going
+ * to be suspending the system.
+ */
+static DECLARE_WAIT_QUEUE_HEAD(kapmd_wait);
+static DECLARE_COMPLETION(kapmd_exit);
+static DEFINE_SPINLOCK(kapmd_queue_lock);
+static struct apm_queue kapmd_queue;
+
+
+static const char driver_version[] = "1.13";	/* no spaces */
+
+
+
+/*
+ * Compatibility cruft until the IPAQ people move over to the new
+ * interface.
+ */
+static void __apm_get_power_status(struct apm_power_info *info)
+{
+}
+
+/*
+ * This allows machines to provide their own "apm get power status" function.
+ */
+void (*apm_get_power_status)(struct apm_power_info *) = __apm_get_power_status;
+EXPORT_SYMBOL(apm_get_power_status);
+
+
+/*
+ * APM event queue management.
+ */
+static inline int queue_empty(struct apm_queue *q)
+{
+	return q->event_head == q->event_tail;
+}
+
+static inline apm_event_t queue_get_event(struct apm_queue *q)
+{
+	q->event_tail = (q->event_tail + 1) % APM_MAX_EVENTS;
+	return q->events[q->event_tail];
+}
+
+static void queue_add_event(struct apm_queue *q, apm_event_t event)
+{
+	q->event_head = (q->event_head + 1) % APM_MAX_EVENTS;
+	if (q->event_head == q->event_tail) {
+		static int notified;
+
+		if (notified++ == 0)
+		    printk(KERN_ERR "apm: an event queue overflowed\n");
+		q->event_tail = (q->event_tail + 1) % APM_MAX_EVENTS;
+	}
+	q->events[q->event_head] = event;
+}
+
+static void queue_event_one_user(struct apm_user *as, apm_event_t event)
+{
+	if (as->suser && as->writer) {
+		switch (event) {
+		case APM_SYS_SUSPEND:
+		case APM_USER_SUSPEND:
+			/*
+			 * If this user already has a suspend pending,
+			 * don't queue another one.
+			 */
+			if (as->suspend_state != SUSPEND_NONE)
+				return;
+
+			as->suspend_state = SUSPEND_PENDING;
+			suspends_pending++;
+			break;
+		}
+	}
+	queue_add_event(&as->queue, event);
+}
+
+static void queue_event(apm_event_t event, struct apm_user *sender)
+{
+	struct apm_user *as;
+
+	down_read(&user_list_lock);
+	list_for_each_entry(as, &apm_user_list, list) {
+		if (as != sender && as->reader)
+			queue_event_one_user(as, event);
+	}
+	up_read(&user_list_lock);
+	wake_up_interruptible(&apm_waitqueue);
+}
+
+static void apm_suspend(void)
+{
+	struct apm_user *as;
+	int err = pm_suspend(PM_SUSPEND_MEM);
+
+	/*
+	 * Anyone on the APM queues will think we're still suspended.
+	 * Send a message so everyone knows we're now awake again.
+	 */
+	queue_event(APM_NORMAL_RESUME, NULL);
+
+	/*
+	 * Finally, wake up anyone who is sleeping on the suspend.
+	 */
+	down_read(&user_list_lock);
+	list_for_each_entry(as, &apm_user_list, list) {
+		as->suspend_result = err;
+		as->suspend_state = SUSPEND_DONE;
+	}
+	up_read(&user_list_lock);
+
+	wake_up(&apm_suspend_waitqueue);
+}
+
+static ssize_t apm_read(struct file *fp, char __user *buf, size_t count, loff_t *ppos)
+{
+	struct apm_user *as = fp->private_data;
+	apm_event_t event;
+	int i = count, ret = 0;
+
+	if (count < sizeof(apm_event_t))
+		return -EINVAL;
+
+	if (queue_empty(&as->queue) && fp->f_flags & O_NONBLOCK)
+		return -EAGAIN;
+
+	wait_event_interruptible(apm_waitqueue, !queue_empty(&as->queue));
+
+	while ((i >= sizeof(event)) && !queue_empty(&as->queue)) {
+		event = queue_get_event(&as->queue);
+
+		ret = -EFAULT;
+		if (copy_to_user(buf, &event, sizeof(event)))
+			break;
+
+		if (event == APM_SYS_SUSPEND || event == APM_USER_SUSPEND)
+			as->suspend_state = SUSPEND_READ;
+
+		buf += sizeof(event);
+		i -= sizeof(event);
+	}
+
+	if (i < count)
+		ret = count - i;
+
+	return ret;
+}
+
+static unsigned int apm_poll(struct file *fp, poll_table * wait)
+{
+	struct apm_user *as = fp->private_data;
+
+	poll_wait(fp, &apm_waitqueue, wait);
+	return queue_empty(&as->queue) ? 0 : POLLIN | POLLRDNORM;
+}
+
+/*
+ * apm_ioctl - handle APM ioctl
+ *
+ * APM_IOC_SUSPEND
+ *   This IOCTL is overloaded, and performs two functions.  It is used to:
+ *     - initiate a suspend
+ *     - acknowledge a suspend read from /dev/apm_bios.
+ *   Only when everyone who has opened /dev/apm_bios with write permission
+ *   has acknowledge does the actual suspend happen.
+ */
+static int
+apm_ioctl(struct inode * inode, struct file *filp, u_int cmd, u_long arg)
+{
+	struct apm_user *as = filp->private_data;
+	unsigned long flags;
+	int err = -EINVAL;
+
+	if (!as->suser || !as->writer)
+		return -EPERM;
+
+	switch (cmd) {
+	case APM_IOC_SUSPEND:
+		as->suspend_result = -EINTR;
+
+		if (as->suspend_state == SUSPEND_READ) {
+			/*
+			 * If we read a suspend command from /dev/apm_bios,
+			 * then the corresponding APM_IOC_SUSPEND ioctl is
+			 * interpreted as an acknowledge.
+			 */
+			as->suspend_state = SUSPEND_ACKED;
+			suspends_pending--;
+		} else {
+			/*
+			 * Otherwise it is a request to suspend the system.
+			 * Queue an event for all readers, and expect an
+			 * acknowledge from all writers who haven't already
+			 * acknowledged.
+			 */
+			queue_event(APM_USER_SUSPEND, as);
+		}
+
+		/*
+		 * If there are no further acknowledges required, suspend
+		 * the system.
+		 */
+		if (suspends_pending == 0)
+			apm_suspend();
+
+		/*
+		 * Wait for the suspend/resume to complete.  If there are
+		 * pending acknowledges, we wait here for them.
+		 *
+		 * Note that we need to ensure that the PM subsystem does
+		 * not kick us out of the wait when it suspends the threads.
+		 */
+		flags = current->flags;
+		current->flags |= PF_NOFREEZE;
+
+		/*
+		 * Note: do not allow a thread which is acking the suspend
+		 * to escape until the resume is complete.
+		 */
+		if (as->suspend_state == SUSPEND_ACKED)
+			wait_event(apm_suspend_waitqueue,
+					 as->suspend_state == SUSPEND_DONE);
+		else
+			wait_event_interruptible(apm_suspend_waitqueue,
+					 as->suspend_state == SUSPEND_DONE);
+
+		current->flags = flags;
+		err = as->suspend_result;
+		as->suspend_state = SUSPEND_NONE;
+		break;
+	}
+
+	return err;
+}
+
+static int apm_release(struct inode * inode, struct file * filp)
+{
+	struct apm_user *as = filp->private_data;
+	filp->private_data = NULL;
+
+	down_write(&user_list_lock);
+	list_del(&as->list);
+	up_write(&user_list_lock);
+
+	/*
+	 * We are now unhooked from the chain.  As far as new
+	 * events are concerned, we no longer exist.  However, we
+	 * need to balance suspends_pending, which means the
+	 * possibility of sleeping.
+	 */
+	if (as->suspend_state != SUSPEND_NONE) {
+		suspends_pending -= 1;
+		if (suspends_pending == 0)
+			apm_suspend();
+	}
+
+	kfree(as);
+	return 0;
+}
+
+static int apm_open(struct inode * inode, struct file * filp)
+{
+	struct apm_user *as;
+
+	as = (struct apm_user *)kmalloc(sizeof(*as), GFP_KERNEL);
+	if (as) {
+		memset(as, 0, sizeof(*as));
+
+		/*
+		 * XXX - this is a tiny bit broken, when we consider BSD
+		 * process accounting. If the device is opened by root, we
+		 * instantly flag that we used superuser privs. Who knows,
+		 * we might close the device immediately without doing a
+		 * privileged operation -- cevans
+		 */
+		as->suser = capable(CAP_SYS_ADMIN);
+		as->writer = (filp->f_mode & FMODE_WRITE) == FMODE_WRITE;
+		as->reader = (filp->f_mode & FMODE_READ) == FMODE_READ;
+
+		down_write(&user_list_lock);
+		list_add(&as->list, &apm_user_list);
+		up_write(&user_list_lock);
+
+		filp->private_data = as;
+	}
+
+	return as ? 0 : -ENOMEM;
+}
+
+static struct file_operations apm_bios_fops = {
+	.owner		= THIS_MODULE,
+	.read		= apm_read,
+	.poll		= apm_poll,
+	.ioctl		= apm_ioctl,
+	.open		= apm_open,
+	.release	= apm_release,
+};
+
+static struct miscdevice apm_device = {
+	.minor		= APM_MINOR_DEV,
+	.name		= "apm_bios",
+	.fops		= &apm_bios_fops
+};
+
+
+#ifdef CONFIG_PROC_FS
+/*
+ * Arguments, with symbols from linux/apm_bios.h.
+ *
+ *   0) Linux driver version (this will change if format changes)
+ *   1) APM BIOS Version.  Usually 1.0, 1.1 or 1.2.
+ *   2) APM flags from APM Installation Check (0x00):
+ *	bit 0: APM_16_BIT_SUPPORT
+ *	bit 1: APM_32_BIT_SUPPORT
+ *	bit 2: APM_IDLE_SLOWS_CLOCK
+ *	bit 3: APM_BIOS_DISABLED
+ *	bit 4: APM_BIOS_DISENGAGED
+ *   3) AC line status
+ *	0x00: Off-line
+ *	0x01: On-line
+ *	0x02: On backup power (BIOS >= 1.1 only)
+ *	0xff: Unknown
+ *   4) Battery status
+ *	0x00: High
+ *	0x01: Low
+ *	0x02: Critical
+ *	0x03: Charging
+ *	0x04: Selected battery not present (BIOS >= 1.2 only)
+ *	0xff: Unknown
+ *   5) Battery flag
+ *	bit 0: High
+ *	bit 1: Low
+ *	bit 2: Critical
+ *	bit 3: Charging
+ *	bit 7: No system battery
+ *	0xff: Unknown
+ *   6) Remaining battery life (percentage of charge):
+ *	0-100: valid
+ *	-1: Unknown
+ *   7) Remaining battery life (time units):
+ *	Number of remaining minutes or seconds
+ *	-1: Unknown
+ *   8) min = minutes; sec = seconds
+ */
+static int apm_get_info(char *buf, char **start, off_t fpos, int length)
+{
+	struct apm_power_info info;
+	char *units;
+	int ret;
+
+	info.ac_line_status = 0xff;
+	info.battery_status = 0xff;
+	info.battery_flag   = 0xff;
+	info.battery_life   = -1;
+	info.time	    = -1;
+	info.units	    = -1;
+
+	if (apm_get_power_status)
+		apm_get_power_status(&info);
+
+	switch (info.units) {
+	default:	units = "?";	break;
+	case 0: 	units = "min";	break;
+	case 1: 	units = "sec";	break;
+	}
+
+	ret = sprintf(buf, "%s 1.2 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n",
+		     driver_version, APM_32_BIT_SUPPORT,
+		     info.ac_line_status, info.battery_status,
+		     info.battery_flag, info.battery_life,
+		     info.time, units);
+
+ 	return ret;
+}
+#endif
+
+static int kapmd(void *arg)
+{
+	daemonize("kapmd");
+	current->flags |= PF_NOFREEZE;
+
+	do {
+		apm_event_t event;
+
+		wait_event_interruptible(kapmd_wait,
+				!queue_empty(&kapmd_queue) || !pm_active);
+
+		if (!pm_active)
+			break;
+
+		spin_lock_irq(&kapmd_queue_lock);
+		event = 0;
+		if (!queue_empty(&kapmd_queue))
+			event = queue_get_event(&kapmd_queue);
+		spin_unlock_irq(&kapmd_queue_lock);
+
+		switch (event) {
+		case 0:
+			break;
+
+		case APM_LOW_BATTERY:
+		case APM_POWER_STATUS_CHANGE:
+			queue_event(event, NULL);
+			break;
+
+		case APM_USER_SUSPEND:
+		case APM_SYS_SUSPEND:
+			queue_event(event, NULL);
+			if (suspends_pending == 0)
+				apm_suspend();
+			break;
+
+		case APM_CRITICAL_SUSPEND:
+			apm_suspend();
+			break;
+		}
+	} while (1);
+
+	complete_and_exit(&kapmd_exit, 0);
+}
+
+static int __init apm_init(void)
+{
+	int ret;
+
+	if (apm_disabled) {
+		printk(KERN_NOTICE "apm: disabled on user request.\n");
+		return -ENODEV;
+	}
+
+	if (PM_IS_ACTIVE()) {
+		printk(KERN_NOTICE "apm: overridden by ACPI.\n");
+		return -EINVAL;
+	}
+
+	pm_active = 1;
+
+	ret = kernel_thread(kapmd, NULL, CLONE_KERNEL);
+	if (ret < 0) {
+		pm_active = 0;
+		return ret;
+	}
+
+#ifdef CONFIG_PROC_FS
+	create_proc_info_entry("apm", 0, NULL, apm_get_info);
+#endif
+
+	ret = misc_register(&apm_device);
+	if (ret != 0) {
+		remove_proc_entry("apm", NULL);
+
+		pm_active = 0;
+		wake_up(&kapmd_wait);
+		wait_for_completion(&kapmd_exit);
+	}
+
+	return ret;
+}
+
+static void __exit apm_exit(void)
+{
+	misc_deregister(&apm_device);
+	remove_proc_entry("apm", NULL);
+
+	pm_active = 0;
+	wake_up(&kapmd_wait);
+	wait_for_completion(&kapmd_exit);
+}
+
+module_init(apm_init);
+module_exit(apm_exit);
+
+MODULE_AUTHOR("Stephen Rothwell");
+MODULE_DESCRIPTION("Advanced Power Management");
+MODULE_LICENSE("GPL");
+
+#ifndef MODULE
+static int __init apm_setup(char *str)
+{
+	while ((str != NULL) && (*str != '\0')) {
+		if (strncmp(str, "off", 3) == 0)
+			apm_disabled = 1;
+		if (strncmp(str, "on", 2) == 0)
+			apm_disabled = 0;
+		str = strchr(str, ',');
+		if (str != NULL)
+			str += strspn(str, ", \t");
+	}
+	return 1;
+}
+
+__setup("apm=", apm_setup);
+#endif
+
+/**
+ * apm_queue_event - queue an APM event for kapmd
+ * @event: APM event
+ *
+ * Queue an APM event for kapmd to process and ultimately take the
+ * appropriate action.  Only a subset of events are handled:
+ *   %APM_LOW_BATTERY
+ *   %APM_POWER_STATUS_CHANGE
+ *   %APM_USER_SUSPEND
+ *   %APM_SYS_SUSPEND
+ *   %APM_CRITICAL_SUSPEND
+ */
+void apm_queue_event(apm_event_t event)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&kapmd_queue_lock, flags);
+	queue_add_event(&kapmd_queue, event);
+	spin_unlock_irqrestore(&kapmd_queue_lock, flags);
+
+	wake_up_interruptible(&kapmd_wait);
+}
+EXPORT_SYMBOL(apm_queue_event);
diff --git a/arch/arm/kernel/arch.c b/arch/arm/kernel/arch.c
new file mode 100644
index 000000000000..4e02fbeb10a6
--- /dev/null
+++ b/arch/arm/kernel/arch.c
@@ -0,0 +1,46 @@
+/*
+ *  linux/arch/arm/kernel/arch.c
+ *
+ *  Architecture specific fixups.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/types.h>
+
+#include <asm/elf.h>
+#include <asm/page.h>
+#include <asm/setup.h>
+#include <asm/mach/arch.h>
+
+unsigned int vram_size;
+
+#ifdef CONFIG_ARCH_ACORN
+
+unsigned int memc_ctrl_reg;
+unsigned int number_mfm_drives;
+
+static int __init parse_tag_acorn(const struct tag *tag)
+{
+	memc_ctrl_reg = tag->u.acorn.memc_control_reg;
+	number_mfm_drives = tag->u.acorn.adfsdrives;
+
+	switch (tag->u.acorn.vram_pages) {
+	case 512:
+		vram_size += PAGE_SIZE * 256;
+	case 256:
+		vram_size += PAGE_SIZE * 256;
+	default:
+		break;
+	}
+#if 0
+	if (vram_size) {
+		desc->video_start = 0x02000000;
+		desc->video_end   = 0x02000000 + vram_size;
+	}
+#endif
+	return 0;
+}
+
+__tagtable(ATAG_ACORN, parse_tag_acorn);
+
+#endif
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
new file mode 100644
index 000000000000..4c38bd8bc298
--- /dev/null
+++ b/arch/arm/kernel/armksyms.c
@@ -0,0 +1,175 @@
+/*
+ *  linux/arch/arm/kernel/armksyms.c
+ *
+ *  Copyright (C) 2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/in6.h>
+#include <linux/syscalls.h>
+
+#include <asm/checksum.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+/*
+ * libgcc functions - functions that are used internally by the
+ * compiler...  (prototypes are not correct though, but that
+ * doesn't really matter since they're not versioned).
+ */
+extern void __ashldi3(void);
+extern void __ashrdi3(void);
+extern void __divsi3(void);
+extern void __lshrdi3(void);
+extern void __modsi3(void);
+extern void __muldi3(void);
+extern void __ucmpdi2(void);
+extern void __udivdi3(void);
+extern void __umoddi3(void);
+extern void __udivmoddi4(void);
+extern void __udivsi3(void);
+extern void __umodsi3(void);
+extern void __do_div64(void);
+
+extern void fpundefinstr(void);
+extern void fp_enter(void);
+
+/*
+ * This has a special calling convention; it doesn't
+ * modify any of the usual registers, except for LR.
+ */
+#define EXPORT_SYMBOL_ALIAS(sym,orig)		\
+ const struct kernel_symbol __ksymtab_##sym	\
+  __attribute__((section("__ksymtab"))) =	\
+    { (unsigned long)&orig, #sym };
+
+/*
+ * floating point math emulator support.
+ * These symbols will never change their calling convention...
+ */
+EXPORT_SYMBOL_ALIAS(kern_fp_enter,fp_enter);
+EXPORT_SYMBOL_ALIAS(fp_printk,printk);
+EXPORT_SYMBOL_ALIAS(fp_send_sig,send_sig);
+
+EXPORT_SYMBOL(__backtrace);
+
+	/* platform dependent support */
+EXPORT_SYMBOL(__udelay);
+EXPORT_SYMBOL(__const_udelay);
+
+	/* networking */
+EXPORT_SYMBOL(csum_partial);
+EXPORT_SYMBOL(csum_partial_copy_nocheck);
+EXPORT_SYMBOL(__csum_ipv6_magic);
+
+	/* io */
+#ifndef __raw_readsb
+EXPORT_SYMBOL(__raw_readsb);
+#endif
+#ifndef __raw_readsw
+EXPORT_SYMBOL(__raw_readsw);
+#endif
+#ifndef __raw_readsl
+EXPORT_SYMBOL(__raw_readsl);
+#endif
+#ifndef __raw_writesb
+EXPORT_SYMBOL(__raw_writesb);
+#endif
+#ifndef __raw_writesw
+EXPORT_SYMBOL(__raw_writesw);
+#endif
+#ifndef __raw_writesl
+EXPORT_SYMBOL(__raw_writesl);
+#endif
+
+	/* string / mem functions */
+EXPORT_SYMBOL(strcpy);
+EXPORT_SYMBOL(strncpy);
+EXPORT_SYMBOL(strcat);
+EXPORT_SYMBOL(strncat);
+EXPORT_SYMBOL(strcmp);
+EXPORT_SYMBOL(strncmp);
+EXPORT_SYMBOL(strchr);
+EXPORT_SYMBOL(strlen);
+EXPORT_SYMBOL(strnlen);
+EXPORT_SYMBOL(strpbrk);
+EXPORT_SYMBOL(strrchr);
+EXPORT_SYMBOL(strstr);
+EXPORT_SYMBOL(memset);
+EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(memmove);
+EXPORT_SYMBOL(memcmp);
+EXPORT_SYMBOL(memscan);
+EXPORT_SYMBOL(memchr);
+EXPORT_SYMBOL(__memzero);
+
+	/* user mem (segment) */
+EXPORT_SYMBOL(__arch_copy_from_user);
+EXPORT_SYMBOL(__arch_copy_to_user);
+EXPORT_SYMBOL(__arch_clear_user);
+EXPORT_SYMBOL(__arch_strnlen_user);
+EXPORT_SYMBOL(__arch_strncpy_from_user);
+
+EXPORT_SYMBOL(__get_user_1);
+EXPORT_SYMBOL(__get_user_2);
+EXPORT_SYMBOL(__get_user_4);
+EXPORT_SYMBOL(__get_user_8);
+
+EXPORT_SYMBOL(__put_user_1);
+EXPORT_SYMBOL(__put_user_2);
+EXPORT_SYMBOL(__put_user_4);
+EXPORT_SYMBOL(__put_user_8);
+
+	/* gcc lib functions */
+EXPORT_SYMBOL(__ashldi3);
+EXPORT_SYMBOL(__ashrdi3);
+EXPORT_SYMBOL(__divsi3);
+EXPORT_SYMBOL(__lshrdi3);
+EXPORT_SYMBOL(__modsi3);
+EXPORT_SYMBOL(__muldi3);
+EXPORT_SYMBOL(__ucmpdi2);
+EXPORT_SYMBOL(__udivdi3);
+EXPORT_SYMBOL(__umoddi3);
+EXPORT_SYMBOL(__udivmoddi4);
+EXPORT_SYMBOL(__udivsi3);
+EXPORT_SYMBOL(__umodsi3);
+EXPORT_SYMBOL(__do_div64);
+
+	/* bitops */
+EXPORT_SYMBOL(_set_bit_le);
+EXPORT_SYMBOL(_test_and_set_bit_le);
+EXPORT_SYMBOL(_clear_bit_le);
+EXPORT_SYMBOL(_test_and_clear_bit_le);
+EXPORT_SYMBOL(_change_bit_le);
+EXPORT_SYMBOL(_test_and_change_bit_le);
+EXPORT_SYMBOL(_find_first_zero_bit_le);
+EXPORT_SYMBOL(_find_next_zero_bit_le);
+EXPORT_SYMBOL(_find_first_bit_le);
+EXPORT_SYMBOL(_find_next_bit_le);
+
+#ifdef __ARMEB__
+EXPORT_SYMBOL(_set_bit_be);
+EXPORT_SYMBOL(_test_and_set_bit_be);
+EXPORT_SYMBOL(_clear_bit_be);
+EXPORT_SYMBOL(_test_and_clear_bit_be);
+EXPORT_SYMBOL(_change_bit_be);
+EXPORT_SYMBOL(_test_and_change_bit_be);
+EXPORT_SYMBOL(_find_first_zero_bit_be);
+EXPORT_SYMBOL(_find_next_zero_bit_be);
+EXPORT_SYMBOL(_find_first_bit_be);
+EXPORT_SYMBOL(_find_next_bit_be);
+#endif
+
+	/* syscalls */
+EXPORT_SYMBOL(sys_write);
+EXPORT_SYMBOL(sys_read);
+EXPORT_SYMBOL(sys_lseek);
+EXPORT_SYMBOL(sys_open);
+EXPORT_SYMBOL(sys_exit);
+EXPORT_SYMBOL(sys_wait4);
diff --git a/arch/arm/kernel/arthur.c b/arch/arm/kernel/arthur.c
new file mode 100644
index 000000000000..a418dad6692c
--- /dev/null
+++ b/arch/arm/kernel/arthur.c
@@ -0,0 +1,91 @@
+/*
+ *  linux/arch/arm/kernel/arthur.c
+ *
+ *  Copyright (C) 1998, 1999, 2000, 2001 Philip Blundell
+ *
+ * Arthur personality
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/personality.h>
+#include <linux/stddef.h>
+#include <linux/signal.h>
+#include <linux/init.h>
+
+#include <asm/ptrace.h>
+
+/* Arthur doesn't have many signals, and a lot of those that it does
+   have don't map easily to any Linux equivalent.  Never mind.  */
+
+#define ARTHUR_SIGABRT		1
+#define ARTHUR_SIGFPE		2
+#define ARTHUR_SIGILL		3
+#define ARTHUR_SIGINT		4
+#define ARTHUR_SIGSEGV		5
+#define ARTHUR_SIGTERM		6
+#define ARTHUR_SIGSTAK		7
+#define ARTHUR_SIGUSR1		8
+#define ARTHUR_SIGUSR2		9
+#define ARTHUR_SIGOSERROR	10
+
+static unsigned long arthur_to_linux_signals[32] = {
+	0,	1,	2,	3,	4,	5,	6,	7,
+	8,	9,	10,	11,	12,	13,	14,	15,
+	16,	17,	18,	19,	20,	21,	22,	23,
+	24,	25,	26,	27,	28,	29,	30,	31
+};
+
+static unsigned long linux_to_arthur_signals[32] = {
+	0,		-1,		ARTHUR_SIGINT,	-1,
+       	ARTHUR_SIGILL,	5,		ARTHUR_SIGABRT,	7,
+	ARTHUR_SIGFPE,	9,		ARTHUR_SIGUSR1,	ARTHUR_SIGSEGV,	
+	ARTHUR_SIGUSR2,	13,		14,		ARTHUR_SIGTERM,
+	16,		17,		18,		19,
+	20,		21,		22,		23,
+	24,		25,		26,		27,
+	28,		29,		30,		31
+};
+
+static void arthur_lcall7(int nr, struct pt_regs *regs)
+{
+	struct siginfo info;
+	info.si_signo = SIGSWI;
+	info.si_errno = nr;
+	/* Bounce it to the emulator */
+	send_sig_info(SIGSWI, &info, current);
+}
+
+static struct exec_domain arthur_exec_domain = {
+	.name		= "Arthur",
+	.handler	= arthur_lcall7,
+	.pers_low	= PER_RISCOS,
+	.pers_high	= PER_RISCOS,
+	.signal_map	= arthur_to_linux_signals,
+	.signal_invmap	= linux_to_arthur_signals,
+	.module		= THIS_MODULE,
+};
+
+/*
+ * We could do with some locking to stop Arthur being removed while
+ * processes are using it.
+ */
+
+static int __init arthur_init(void)
+{
+	return register_exec_domain(&arthur_exec_domain);
+}
+
+static void __exit arthur_exit(void)
+{
+	unregister_exec_domain(&arthur_exec_domain);
+}
+
+module_init(arthur_init);
+module_exit(arthur_exit);
diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c
new file mode 100644
index 000000000000..99d43259ff89
--- /dev/null
+++ b/arch/arm/kernel/asm-offsets.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 1995-2003 Russell King
+ *               2001-2002 Keith Owens
+ *     
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed to extract
+ * and format the required data.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <asm/mach/arch.h>
+#include <asm/thread_info.h>
+#include <asm/memory.h>
+
+/*
+ * Make sure that the compiler and target are compatible.
+ */
+#if defined(__APCS_26__)
+#error Sorry, your compiler targets APCS-26 but this kernel requires APCS-32
+#endif
+/*
+ * GCC 2.95.1, 2.95.2: ignores register clobber list in asm().
+ * GCC 3.0, 3.1: general bad code generation.
+ * GCC 3.2.0: incorrect function argument offset calculation.
+ * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
+ *            (http://gcc.gnu.org/PR8896) and incorrect structure
+ *	      initialisation in fs/jffs2/erase.c
+ */
+#if __GNUC__ < 2 || \
+   (__GNUC__ == 2 && __GNUC_MINOR__ < 95) || \
+   (__GNUC__ == 2 && __GNUC_MINOR__ == 95 && __GNUC_PATCHLEVEL__ != 0 && \
+					     __GNUC_PATCHLEVEL__ < 3) || \
+   (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
+#error Your compiler is too buggy; it is known to miscompile kernels.
+#error    Known good compilers: 2.95.3, 2.95.4, 2.96, 3.3
+#endif
+
+/* Use marker if you need to separate the values later */
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+int main(void)
+{
+  DEFINE(TSK_ACTIVE_MM,		offsetof(struct task_struct, active_mm));
+  BLANK();
+  DEFINE(TI_FLAGS,		offsetof(struct thread_info, flags));
+  DEFINE(TI_PREEMPT,		offsetof(struct thread_info, preempt_count));
+  DEFINE(TI_ADDR_LIMIT,		offsetof(struct thread_info, addr_limit));
+  DEFINE(TI_TASK,		offsetof(struct thread_info, task));
+  DEFINE(TI_EXEC_DOMAIN,	offsetof(struct thread_info, exec_domain));
+  DEFINE(TI_CPU,		offsetof(struct thread_info, cpu));
+  DEFINE(TI_CPU_DOMAIN,		offsetof(struct thread_info, cpu_domain));
+  DEFINE(TI_CPU_SAVE,		offsetof(struct thread_info, cpu_context));
+  DEFINE(TI_USED_CP,		offsetof(struct thread_info, used_cp));
+  DEFINE(TI_TP_VALUE,		offsetof(struct thread_info, tp_value));
+  DEFINE(TI_FPSTATE,		offsetof(struct thread_info, fpstate));
+  DEFINE(TI_VFPSTATE,		offsetof(struct thread_info, vfpstate));
+  DEFINE(TI_IWMMXT_STATE,	(offsetof(struct thread_info, fpstate)+4)&~7);
+  BLANK();
+#if __LINUX_ARM_ARCH__ >= 6
+  DEFINE(MM_CONTEXT_ID,		offsetof(struct mm_struct, context.id));
+  BLANK();
+#endif
+  DEFINE(VMA_VM_MM,		offsetof(struct vm_area_struct, vm_mm));
+  DEFINE(VMA_VM_FLAGS,		offsetof(struct vm_area_struct, vm_flags));
+  BLANK();
+  DEFINE(VM_EXEC,	       	VM_EXEC);
+  BLANK();
+  DEFINE(PAGE_SZ,	       	PAGE_SIZE);
+  DEFINE(VIRT_OFFSET,		PAGE_OFFSET);
+  BLANK();
+  DEFINE(SYS_ERROR0,		0x9f0000);
+  BLANK();
+  DEFINE(SIZEOF_MACHINE_DESC,	sizeof(struct machine_desc));
+  return 0; 
+}
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
new file mode 100644
index 000000000000..ad26e98f1e62
--- /dev/null
+++ b/arch/arm/kernel/bios32.c
@@ -0,0 +1,699 @@
+/*
+ *  linux/arch/arm/kernel/bios32.c
+ *
+ *  PCI bios-type initialisation for PCI machines
+ *
+ *  Bits taken from various places.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/mach/pci.h>
+
+static int debug_pci;
+static int use_firmware;
+
+/*
+ * We can't use pci_find_device() here since we are
+ * called from interrupt context.
+ */
+static void pcibios_bus_report_status(struct pci_bus *bus, u_int status_mask, int warn)
+{
+	struct pci_dev *dev;
+
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+		u16 status;
+
+		/*
+		 * ignore host bridge - we handle
+		 * that separately
+		 */
+		if (dev->bus->number == 0 && dev->devfn == 0)
+			continue;
+
+		pci_read_config_word(dev, PCI_STATUS, &status);
+		if (status == 0xffff)
+			continue;
+
+		if ((status & status_mask) == 0)
+			continue;
+
+		/* clear the status errors */
+		pci_write_config_word(dev, PCI_STATUS, status & status_mask);
+
+		if (warn)
+			printk("(%s: %04X) ", pci_name(dev), status);
+	}
+
+	list_for_each_entry(dev, &bus->devices, bus_list)
+		if (dev->subordinate)
+			pcibios_bus_report_status(dev->subordinate, status_mask, warn);
+}
+
+void pcibios_report_status(u_int status_mask, int warn)
+{
+	struct list_head *l;
+
+	list_for_each(l, &pci_root_buses) {
+		struct pci_bus *bus = pci_bus_b(l);
+
+		pcibios_bus_report_status(bus, status_mask, warn);
+	}
+}
+
+/*
+ * We don't use this to fix the device, but initialisation of it.
+ * It's not the correct use for this, but it works.
+ * Note that the arbiter/ISA bridge appears to be buggy, specifically in
+ * the following area:
+ * 1. park on CPU
+ * 2. ISA bridge ping-pong
+ * 3. ISA bridge master handling of target RETRY
+ *
+ * Bug 3 is responsible for the sound DMA grinding to a halt.  We now
+ * live with bug 2.
+ */
+static void __devinit pci_fixup_83c553(struct pci_dev *dev)
+{
+	/*
+	 * Set memory region to start at address 0, and enable IO
+	 */
+	pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, PCI_BASE_ADDRESS_SPACE_MEMORY);
+	pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_IO);
+
+	dev->resource[0].end -= dev->resource[0].start;
+	dev->resource[0].start = 0;
+
+	/*
+	 * All memory requests from ISA to be channelled to PCI
+	 */
+	pci_write_config_byte(dev, 0x48, 0xff);
+
+	/*
+	 * Enable ping-pong on bus master to ISA bridge transactions.
+	 * This improves the sound DMA substantially.  The fixed
+	 * priority arbiter also helps (see below).
+	 */
+	pci_write_config_byte(dev, 0x42, 0x01);
+
+	/*
+	 * Enable PCI retry
+	 */
+	pci_write_config_byte(dev, 0x40, 0x22);
+
+	/*
+	 * We used to set the arbiter to "park on last master" (bit
+	 * 1 set), but unfortunately the CyberPro does not park the
+	 * bus.  We must therefore park on CPU.  Unfortunately, this
+	 * may trigger yet another bug in the 553.
+	 */
+	pci_write_config_byte(dev, 0x83, 0x02);
+
+	/*
+	 * Make the ISA DMA request lowest priority, and disable
+	 * rotating priorities completely.
+	 */
+	pci_write_config_byte(dev, 0x80, 0x11);
+	pci_write_config_byte(dev, 0x81, 0x00);
+
+	/*
+	 * Route INTA input to IRQ 11, and set IRQ11 to be level
+	 * sensitive.
+	 */
+	pci_write_config_word(dev, 0x44, 0xb000);
+	outb(0x08, 0x4d1);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_83C553, pci_fixup_83c553);
+
+static void __devinit pci_fixup_unassign(struct pci_dev *dev)
+{
+	dev->resource[0].end -= dev->resource[0].start;
+	dev->resource[0].start = 0;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_89C940F, pci_fixup_unassign);
+
+/*
+ * Prevent the PCI layer from seeing the resources allocated to this device
+ * if it is the host bridge by marking it as such.  These resources are of
+ * no consequence to the PCI layer (they are handled elsewhere).
+ */
+static void __devinit pci_fixup_dec21285(struct pci_dev *dev)
+{
+	int i;
+
+	if (dev->devfn == 0) {
+		dev->class &= 0xff;
+		dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
+		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+			dev->resource[i].start = 0;
+			dev->resource[i].end   = 0;
+			dev->resource[i].flags = 0;
+		}
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, pci_fixup_dec21285);
+
+/*
+ * Same as above. The PrPMC800 carrier board for the PrPMC1100 
+ * card maps the host-bridge @ 00:01:00 for some reason and it
+ * ends up getting scanned. Note that we only want to do this
+ * fixup when we find the IXP4xx on a PrPMC system, which is why
+ * we check the machine type. We could be running on a board
+ * with an IXP4xx target device and we don't want to kill the
+ * resources in that case.
+ */
+static void __devinit pci_fixup_prpmc1100(struct pci_dev *dev)
+{
+	int i;
+
+	if (machine_is_prpmc1100()) {
+		dev->class &= 0xff;
+		dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
+		for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+			dev->resource[i].start = 0;
+			dev->resource[i].end   = 0;
+			dev->resource[i].flags = 0;
+		}
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IXP4XX, pci_fixup_prpmc1100);
+
+/*
+ * PCI IDE controllers use non-standard I/O port decoding, respect it.
+ */
+static void __devinit pci_fixup_ide_bases(struct pci_dev *dev)
+{
+	struct resource *r;
+	int i;
+
+	if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
+		return;
+
+	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+		r = dev->resource + i;
+		if ((r->start & ~0x80) == 0x374) {
+			r->start |= 2;
+			r->end = r->start;
+		}
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_ide_bases);
+
+/*
+ * Put the DEC21142 to sleep
+ */
+static void __devinit pci_fixup_dec21142(struct pci_dev *dev)
+{
+	pci_write_config_dword(dev, 0x40, 0x80000000);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21142, pci_fixup_dec21142);
+
+/*
+ * The CY82C693 needs some rather major fixups to ensure that it does
+ * the right thing.  Idea from the Alpha people, with a few additions.
+ *
+ * We ensure that the IDE base registers are set to 1f0/3f4 for the
+ * primary bus, and 170/374 for the secondary bus.  Also, hide them
+ * from the PCI subsystem view as well so we won't try to perform
+ * our own auto-configuration on them.
+ *
+ * In addition, we ensure that the PCI IDE interrupts are routed to
+ * IRQ 14 and IRQ 15 respectively.
+ *
+ * The above gets us to a point where the IDE on this device is
+ * functional.  However, The CY82C693U _does not work_ in bus
+ * master mode without locking the PCI bus solid.
+ */
+static void __devinit pci_fixup_cy82c693(struct pci_dev *dev)
+{
+	if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
+		u32 base0, base1;
+
+		if (dev->class & 0x80) {	/* primary */
+			base0 = 0x1f0;
+			base1 = 0x3f4;
+		} else {			/* secondary */
+			base0 = 0x170;
+			base1 = 0x374;
+		}
+
+		pci_write_config_dword(dev, PCI_BASE_ADDRESS_0,
+				       base0 | PCI_BASE_ADDRESS_SPACE_IO);
+		pci_write_config_dword(dev, PCI_BASE_ADDRESS_1,
+				       base1 | PCI_BASE_ADDRESS_SPACE_IO);
+
+		dev->resource[0].start = 0;
+		dev->resource[0].end   = 0;
+		dev->resource[0].flags = 0;
+
+		dev->resource[1].start = 0;
+		dev->resource[1].end   = 0;
+		dev->resource[1].flags = 0;
+	} else if (PCI_FUNC(dev->devfn) == 0) {
+		/*
+		 * Setup IDE IRQ routing.
+		 */
+		pci_write_config_byte(dev, 0x4b, 14);
+		pci_write_config_byte(dev, 0x4c, 15);
+
+		/*
+		 * Disable FREQACK handshake, enable USB.
+		 */
+		pci_write_config_byte(dev, 0x4d, 0x41);
+
+		/*
+		 * Enable PCI retry, and PCI post-write buffer.
+		 */
+		pci_write_config_byte(dev, 0x44, 0x17);
+
+		/*
+		 * Enable ISA master and DMA post write buffering.
+		 */
+		pci_write_config_byte(dev, 0x45, 0x03);
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693, pci_fixup_cy82c693);
+
+void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+	if (debug_pci)
+		printk("PCI: Assigning IRQ %02d to %s\n", irq, pci_name(dev));
+	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
+
+/*
+ * If the bus contains any of these devices, then we must not turn on
+ * parity checking of any kind.  Currently this is CyberPro 20x0 only.
+ */
+static inline int pdev_bad_for_parity(struct pci_dev *dev)
+{
+	return (dev->vendor == PCI_VENDOR_ID_INTERG &&
+		(dev->device == PCI_DEVICE_ID_INTERG_2000 ||
+		 dev->device == PCI_DEVICE_ID_INTERG_2010));
+}
+
+/*
+ * Adjust the device resources from bus-centric to Linux-centric.
+ */
+static void __devinit
+pdev_fixup_device_resources(struct pci_sys_data *root, struct pci_dev *dev)
+{
+	unsigned long offset;
+	int i;
+
+	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+		if (dev->resource[i].start == 0)
+			continue;
+		if (dev->resource[i].flags & IORESOURCE_MEM)
+			offset = root->mem_offset;
+		else
+			offset = root->io_offset;
+
+		dev->resource[i].start += offset;
+		dev->resource[i].end   += offset;
+	}
+}
+
+static void __devinit
+pbus_assign_bus_resources(struct pci_bus *bus, struct pci_sys_data *root)
+{
+	struct pci_dev *dev = bus->self;
+	int i;
+
+	if (!dev) {
+		/*
+		 * Assign root bus resources.
+		 */
+		for (i = 0; i < 3; i++)
+			bus->resource[i] = root->resource[i];
+	}
+}
+
+/*
+ * pcibios_fixup_bus - Called after each bus is probed,
+ * but before its children are examined.
+ */
+void __devinit pcibios_fixup_bus(struct pci_bus *bus)
+{
+	struct pci_sys_data *root = bus->sysdata;
+	struct pci_dev *dev;
+	u16 features = PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_FAST_BACK;
+
+	pbus_assign_bus_resources(bus, root);
+
+	/*
+	 * Walk the devices on this bus, working out what we can
+	 * and can't support.
+	 */
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+		u16 status;
+
+		pdev_fixup_device_resources(root, dev);
+
+		pci_read_config_word(dev, PCI_STATUS, &status);
+
+		/*
+		 * If any device on this bus does not support fast back
+		 * to back transfers, then the bus as a whole is not able
+		 * to support them.  Having fast back to back transfers
+		 * on saves us one PCI cycle per transaction.
+		 */
+		if (!(status & PCI_STATUS_FAST_BACK))
+			features &= ~PCI_COMMAND_FAST_BACK;
+
+		if (pdev_bad_for_parity(dev))
+			features &= ~(PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
+
+		switch (dev->class >> 8) {
+#if defined(CONFIG_ISA) || defined(CONFIG_EISA)
+		case PCI_CLASS_BRIDGE_ISA:
+		case PCI_CLASS_BRIDGE_EISA:
+			/*
+			 * If this device is an ISA bridge, set isa_bridge
+			 * to point at this device.  We will then go looking
+			 * for things like keyboard, etc.
+			 */
+			isa_bridge = dev;
+			break;
+#endif
+		case PCI_CLASS_BRIDGE_PCI:
+			pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &status);
+			status |= PCI_BRIDGE_CTL_PARITY|PCI_BRIDGE_CTL_MASTER_ABORT;
+			status &= ~(PCI_BRIDGE_CTL_BUS_RESET|PCI_BRIDGE_CTL_FAST_BACK);
+			pci_write_config_word(dev, PCI_BRIDGE_CONTROL, status);
+			break;
+
+		case PCI_CLASS_BRIDGE_CARDBUS:
+			pci_read_config_word(dev, PCI_CB_BRIDGE_CONTROL, &status);
+			status |= PCI_CB_BRIDGE_CTL_PARITY|PCI_CB_BRIDGE_CTL_MASTER_ABORT;
+			pci_write_config_word(dev, PCI_CB_BRIDGE_CONTROL, status);
+			break;
+		}
+	}
+
+	/*
+	 * Now walk the devices again, this time setting them up.
+	 */
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+		u16 cmd;
+
+		pci_read_config_word(dev, PCI_COMMAND, &cmd);
+		cmd |= features;
+		pci_write_config_word(dev, PCI_COMMAND, cmd);
+
+		pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
+				      L1_CACHE_BYTES >> 2);
+	}
+
+	/*
+	 * Propagate the flags to the PCI bridge.
+	 */
+	if (bus->self && bus->self->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+		if (features & PCI_COMMAND_FAST_BACK)
+			bus->bridge_ctl |= PCI_BRIDGE_CTL_FAST_BACK;
+		if (features & PCI_COMMAND_PARITY)
+			bus->bridge_ctl |= PCI_BRIDGE_CTL_PARITY;
+	}
+
+	/*
+	 * Report what we did for this bus
+	 */
+	printk(KERN_INFO "PCI: bus%d: Fast back to back transfers %sabled\n",
+		bus->number, (features & PCI_COMMAND_FAST_BACK) ? "en" : "dis");
+}
+
+/*
+ * Convert from Linux-centric to bus-centric addresses for bridge devices.
+ */
+void __devinit
+pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
+			 struct resource *res)
+{
+	struct pci_sys_data *root = dev->sysdata;
+	unsigned long offset = 0;
+
+	if (res->flags & IORESOURCE_IO)
+		offset = root->io_offset;
+	if (res->flags & IORESOURCE_MEM)
+		offset = root->mem_offset;
+
+	region->start = res->start - offset;
+	region->end   = res->end - offset;
+}
+
+#ifdef CONFIG_HOTPLUG
+EXPORT_SYMBOL(pcibios_fixup_bus);
+EXPORT_SYMBOL(pcibios_resource_to_bus);
+#endif
+
+/*
+ * This is the standard PCI-PCI bridge swizzling algorithm:
+ *
+ *   Dev: 0  1  2  3
+ *    A   A  B  C  D
+ *    B   B  C  D  A
+ *    C   C  D  A  B
+ *    D   D  A  B  C
+ *        ^^^^^^^^^^ irq pin on bridge
+ */
+u8 __devinit pci_std_swizzle(struct pci_dev *dev, u8 *pinp)
+{
+	int pin = *pinp - 1;
+
+	while (dev->bus->self) {
+		pin = (pin + PCI_SLOT(dev->devfn)) & 3;
+		/*
+		 * move up the chain of bridges,
+		 * swizzling as we go.
+		 */
+		dev = dev->bus->self;
+	}
+	*pinp = pin + 1;
+
+	return PCI_SLOT(dev->devfn);
+}
+
+/*
+ * Swizzle the device pin each time we cross a bridge.
+ * This might update pin and returns the slot number.
+ */
+static u8 __devinit pcibios_swizzle(struct pci_dev *dev, u8 *pin)
+{
+	struct pci_sys_data *sys = dev->sysdata;
+	int slot = 0, oldpin = *pin;
+
+	if (sys->swizzle)
+		slot = sys->swizzle(dev, pin);
+
+	if (debug_pci)
+		printk("PCI: %s swizzling pin %d => pin %d slot %d\n",
+			pci_name(dev), oldpin, *pin, slot);
+
+	return slot;
+}
+
+/*
+ * Map a slot/pin to an IRQ.
+ */
+static int pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	struct pci_sys_data *sys = dev->sysdata;
+	int irq = -1;
+
+	if (sys->map_irq)
+		irq = sys->map_irq(dev, slot, pin);
+
+	if (debug_pci)
+		printk("PCI: %s mapping slot %d pin %d => irq %d\n",
+			pci_name(dev), slot, pin, irq);
+
+	return irq;
+}
+
+static void __init pcibios_init_hw(struct hw_pci *hw)
+{
+	struct pci_sys_data *sys = NULL;
+	int ret;
+	int nr, busnr;
+
+	for (nr = busnr = 0; nr < hw->nr_controllers; nr++) {
+		sys = kmalloc(sizeof(struct pci_sys_data), GFP_KERNEL);
+		if (!sys)
+			panic("PCI: unable to allocate sys data!");
+
+		memset(sys, 0, sizeof(struct pci_sys_data));
+
+		sys->hw      = hw;
+		sys->busnr   = busnr;
+		sys->swizzle = hw->swizzle;
+		sys->map_irq = hw->map_irq;
+		sys->resource[0] = &ioport_resource;
+		sys->resource[1] = &iomem_resource;
+
+		ret = hw->setup(nr, sys);
+
+		if (ret > 0) {
+			sys->bus = hw->scan(nr, sys);
+
+			if (!sys->bus)
+				panic("PCI: unable to scan bus!");
+
+			busnr = sys->bus->subordinate + 1;
+
+			list_add(&sys->node, &hw->buses);
+		} else {
+			kfree(sys);
+			if (ret < 0)
+				break;
+		}
+	}
+}
+
+void __init pci_common_init(struct hw_pci *hw)
+{
+	struct pci_sys_data *sys;
+
+	INIT_LIST_HEAD(&hw->buses);
+
+	if (hw->preinit)
+		hw->preinit();
+	pcibios_init_hw(hw);
+	if (hw->postinit)
+		hw->postinit();
+
+	pci_fixup_irqs(pcibios_swizzle, pcibios_map_irq);
+
+	list_for_each_entry(sys, &hw->buses, node) {
+		struct pci_bus *bus = sys->bus;
+
+		if (!use_firmware) {
+			/*
+			 * Size the bridge windows.
+			 */
+			pci_bus_size_bridges(bus);
+
+			/*
+			 * Assign resources.
+			 */
+			pci_bus_assign_resources(bus);
+		}
+
+		/*
+		 * Tell drivers about devices found.
+		 */
+		pci_bus_add_devices(bus);
+	}
+}
+
+char * __init pcibios_setup(char *str)
+{
+	if (!strcmp(str, "debug")) {
+		debug_pci = 1;
+		return NULL;
+	} else if (!strcmp(str, "firmware")) {
+		use_firmware = 1;
+		return NULL;
+	}
+	return str;
+}
+
+/*
+ * From arch/i386/kernel/pci-i386.c:
+ *
+ * We need to avoid collisions with `mirrored' VGA ports
+ * and other strange ISA hardware, so we always want the
+ * addresses to be allocated in the 0x000-0x0ff region
+ * modulo 0x400.
+ *
+ * Why? Because some silly external IO cards only decode
+ * the low 10 bits of the IO address. The 0x00-0xff region
+ * is reserved for motherboard devices that decode all 16
+ * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
+ * but we want to try to avoid allocating at 0x2900-0x2bff
+ * which might be mirrored at 0x0100-0x03ff..
+ */
+void pcibios_align_resource(void *data, struct resource *res,
+			    unsigned long size, unsigned long align)
+{
+	unsigned long start = res->start;
+
+	if (res->flags & IORESOURCE_IO && start & 0x300)
+		start = (start + 0x3ff) & ~0x3ff;
+
+	res->start = (start + align - 1) & ~(align - 1);
+}
+
+/**
+ * pcibios_enable_device - Enable I/O and memory.
+ * @dev: PCI device to be enabled
+ */
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+	u16 cmd, old_cmd;
+	int idx;
+	struct resource *r;
+
+	pci_read_config_word(dev, PCI_COMMAND, &cmd);
+	old_cmd = cmd;
+	for (idx = 0; idx < 6; idx++) {
+		/* Only set up the requested stuff */
+		if (!(mask & (1 << idx)))
+			continue;
+
+		r = dev->resource + idx;
+		if (!r->start && r->end) {
+			printk(KERN_ERR "PCI: Device %s not available because"
+			       " of resource collisions\n", pci_name(dev));
+			return -EINVAL;
+		}
+		if (r->flags & IORESOURCE_IO)
+			cmd |= PCI_COMMAND_IO;
+		if (r->flags & IORESOURCE_MEM)
+			cmd |= PCI_COMMAND_MEMORY;
+	}
+
+	/*
+	 * Bridges (eg, cardbus bridges) need to be fully enabled
+	 */
+	if ((dev->class >> 16) == PCI_BASE_CLASS_BRIDGE)
+		cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
+
+	if (cmd != old_cmd) {
+		printk("PCI: enabling device %s (%04x -> %04x)\n",
+		       pci_name(dev), old_cmd, cmd);
+		pci_write_config_word(dev, PCI_COMMAND, cmd);
+	}
+	return 0;
+}
+
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+			enum pci_mmap_state mmap_state, int write_combine)
+{
+	struct pci_sys_data *root = dev->sysdata;
+	unsigned long phys;
+
+	if (mmap_state == pci_mmap_io) {
+		return -EINVAL;
+	} else {
+		phys = vma->vm_pgoff + (root->mem_offset >> PAGE_SHIFT);
+	}
+
+	/*
+	 * Mark this as IO
+	 */
+	vma->vm_flags |= VM_SHM | VM_LOCKED | VM_IO;
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	if (remap_pfn_range(vma, vma->vm_start, phys,
+			     vma->vm_end - vma->vm_start,
+			     vma->vm_page_prot))
+		return -EAGAIN;
+
+	return 0;
+}
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
new file mode 100644
index 000000000000..e5d370c235d7
--- /dev/null
+++ b/arch/arm/kernel/calls.S
@@ -0,0 +1,335 @@
+/*
+ *  linux/arch/arm/kernel/calls.S
+ *
+ *  Copyright (C) 1995-2005 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  This file is included twice in entry-common.S
+ */
+#ifndef NR_syscalls
+#define NR_syscalls 320
+#else
+
+__syscall_start:
+/* 0 */		.long	sys_restart_syscall
+		.long	sys_exit
+		.long	sys_fork_wrapper
+		.long	sys_read
+		.long	sys_write
+/* 5 */		.long	sys_open
+		.long	sys_close
+		.long	sys_ni_syscall		/* was sys_waitpid */
+		.long	sys_creat
+		.long	sys_link
+/* 10 */	.long	sys_unlink
+		.long	sys_execve_wrapper
+		.long	sys_chdir
+		.long	sys_time		/* used by libc4 */
+		.long	sys_mknod
+/* 15 */	.long	sys_chmod
+		.long	sys_lchown16
+		.long	sys_ni_syscall		/* was sys_break */
+		.long	sys_ni_syscall		/* was sys_stat */
+		.long	sys_lseek
+/* 20 */	.long	sys_getpid
+		.long	sys_mount
+		.long	sys_oldumount		/* used by libc4 */
+		.long	sys_setuid16
+		.long	sys_getuid16
+/* 25 */	.long	sys_stime
+		.long	sys_ptrace
+		.long	sys_alarm		/* used by libc4 */
+		.long	sys_ni_syscall		/* was sys_fstat */
+		.long	sys_pause
+/* 30 */	.long	sys_utime		/* used by libc4 */
+		.long	sys_ni_syscall		/* was sys_stty */
+		.long	sys_ni_syscall		/* was sys_getty */
+		.long	sys_access
+		.long	sys_nice
+/* 35 */	.long	sys_ni_syscall		/* was sys_ftime */
+		.long	sys_sync
+		.long	sys_kill
+		.long	sys_rename
+		.long	sys_mkdir
+/* 40 */	.long	sys_rmdir
+		.long	sys_dup
+		.long	sys_pipe
+		.long	sys_times
+		.long	sys_ni_syscall		/* was sys_prof */
+/* 45 */	.long	sys_brk
+		.long	sys_setgid16
+		.long	sys_getgid16
+		.long	sys_ni_syscall		/* was sys_signal */
+		.long	sys_geteuid16
+/* 50 */	.long	sys_getegid16
+		.long	sys_acct
+		.long	sys_umount
+		.long	sys_ni_syscall		/* was sys_lock */
+		.long	sys_ioctl
+/* 55 */	.long	sys_fcntl
+		.long	sys_ni_syscall		/* was sys_mpx */
+		.long	sys_setpgid
+		.long	sys_ni_syscall		/* was sys_ulimit */
+		.long	sys_ni_syscall		/* was sys_olduname */
+/* 60 */	.long	sys_umask
+		.long	sys_chroot
+		.long	sys_ustat
+		.long	sys_dup2
+		.long	sys_getppid
+/* 65 */	.long	sys_getpgrp
+		.long	sys_setsid
+		.long	sys_sigaction
+		.long	sys_ni_syscall		/* was sys_sgetmask */
+		.long	sys_ni_syscall		/* was sys_ssetmask */
+/* 70 */	.long	sys_setreuid16
+		.long	sys_setregid16
+		.long	sys_sigsuspend_wrapper
+		.long	sys_sigpending
+		.long	sys_sethostname
+/* 75 */	.long	sys_setrlimit
+		.long	sys_old_getrlimit	/* used by libc4 */
+		.long	sys_getrusage
+		.long	sys_gettimeofday
+		.long	sys_settimeofday
+/* 80 */	.long	sys_getgroups16
+		.long	sys_setgroups16
+		.long	old_select		/* used by libc4 */
+		.long	sys_symlink
+		.long	sys_ni_syscall		/* was sys_lstat */
+/* 85 */	.long	sys_readlink
+		.long	sys_uselib
+		.long	sys_swapon
+		.long	sys_reboot
+		.long	old_readdir		/* used by libc4 */
+/* 90 */	.long	old_mmap		/* used by libc4 */
+		.long	sys_munmap
+		.long	sys_truncate
+		.long	sys_ftruncate
+		.long	sys_fchmod
+/* 95 */	.long	sys_fchown16
+		.long	sys_getpriority
+		.long	sys_setpriority
+		.long	sys_ni_syscall		/* was sys_profil */
+		.long	sys_statfs
+/* 100 */	.long	sys_fstatfs
+		.long	sys_ni_syscall
+		.long	sys_socketcall
+		.long	sys_syslog
+		.long	sys_setitimer
+/* 105 */	.long	sys_getitimer
+		.long	sys_newstat
+		.long	sys_newlstat
+		.long	sys_newfstat
+		.long	sys_ni_syscall		/* was sys_uname */
+/* 110 */	.long	sys_ni_syscall		/* was sys_iopl */
+		.long	sys_vhangup
+		.long	sys_ni_syscall
+		.long	sys_syscall		/* call a syscall */
+		.long	sys_wait4
+/* 115 */	.long	sys_swapoff
+		.long	sys_sysinfo
+		.long	sys_ipc
+		.long	sys_fsync
+		.long	sys_sigreturn_wrapper
+/* 120 */	.long	sys_clone_wrapper
+		.long	sys_setdomainname
+		.long	sys_newuname
+		.long	sys_ni_syscall
+		.long	sys_adjtimex
+/* 125 */	.long	sys_mprotect
+		.long	sys_sigprocmask
+		.long	sys_ni_syscall		/* was sys_create_module */
+		.long	sys_init_module
+		.long	sys_delete_module
+/* 130 */	.long	sys_ni_syscall		/* was sys_get_kernel_syms */
+		.long	sys_quotactl
+		.long	sys_getpgid
+		.long	sys_fchdir
+		.long	sys_bdflush
+/* 135 */	.long	sys_sysfs
+		.long	sys_personality
+		.long	sys_ni_syscall		/* .long	_sys_afs_syscall */
+		.long	sys_setfsuid16
+		.long	sys_setfsgid16
+/* 140 */	.long	sys_llseek
+		.long	sys_getdents
+		.long	sys_select
+		.long	sys_flock
+		.long	sys_msync
+/* 145 */	.long	sys_readv
+		.long	sys_writev
+		.long	sys_getsid
+		.long	sys_fdatasync
+		.long	sys_sysctl
+/* 150 */	.long	sys_mlock
+		.long	sys_munlock
+		.long	sys_mlockall
+		.long	sys_munlockall
+		.long	sys_sched_setparam
+/* 155 */	.long	sys_sched_getparam
+		.long	sys_sched_setscheduler
+		.long	sys_sched_getscheduler
+		.long	sys_sched_yield
+		.long	sys_sched_get_priority_max
+/* 160 */	.long	sys_sched_get_priority_min
+		.long	sys_sched_rr_get_interval
+		.long	sys_nanosleep
+		.long	sys_arm_mremap
+		.long	sys_setresuid16
+/* 165 */	.long	sys_getresuid16
+		.long	sys_ni_syscall
+		.long	sys_ni_syscall		/* was sys_query_module */
+		.long	sys_poll
+		.long	sys_nfsservctl
+/* 170 */	.long	sys_setresgid16
+		.long	sys_getresgid16
+		.long	sys_prctl
+		.long	sys_rt_sigreturn_wrapper
+		.long	sys_rt_sigaction
+/* 175 */	.long	sys_rt_sigprocmask
+		.long	sys_rt_sigpending
+		.long	sys_rt_sigtimedwait
+		.long	sys_rt_sigqueueinfo
+		.long	sys_rt_sigsuspend_wrapper
+/* 180 */	.long	sys_pread64
+		.long	sys_pwrite64
+		.long	sys_chown16
+		.long	sys_getcwd
+		.long	sys_capget
+/* 185 */	.long	sys_capset
+		.long	sys_sigaltstack_wrapper
+		.long	sys_sendfile
+		.long	sys_ni_syscall
+		.long	sys_ni_syscall
+/* 190 */	.long	sys_vfork_wrapper
+		.long	sys_getrlimit
+		.long	sys_mmap2
+		.long	sys_truncate64
+		.long	sys_ftruncate64
+/* 195 */	.long	sys_stat64
+		.long	sys_lstat64
+		.long	sys_fstat64
+		.long	sys_lchown
+		.long	sys_getuid
+/* 200 */	.long	sys_getgid
+		.long	sys_geteuid
+		.long	sys_getegid
+		.long	sys_setreuid
+		.long	sys_setregid
+/* 205 */	.long	sys_getgroups
+		.long	sys_setgroups
+		.long	sys_fchown
+		.long	sys_setresuid
+		.long	sys_getresuid
+/* 210 */	.long	sys_setresgid
+		.long	sys_getresgid
+		.long	sys_chown
+		.long	sys_setuid
+		.long	sys_setgid
+/* 215 */	.long	sys_setfsuid
+		.long	sys_setfsgid
+		.long	sys_getdents64
+		.long	sys_pivot_root
+		.long	sys_mincore
+/* 220 */	.long	sys_madvise
+		.long	sys_fcntl64
+		.long	sys_ni_syscall /* TUX */
+		.long	sys_ni_syscall
+		.long	sys_gettid
+/* 225 */	.long	sys_readahead
+		.long	sys_setxattr
+		.long	sys_lsetxattr
+		.long	sys_fsetxattr
+		.long	sys_getxattr
+/* 230 */	.long	sys_lgetxattr
+		.long	sys_fgetxattr
+		.long	sys_listxattr
+		.long	sys_llistxattr
+		.long	sys_flistxattr
+/* 235 */	.long	sys_removexattr
+		.long	sys_lremovexattr
+		.long	sys_fremovexattr
+		.long	sys_tkill
+		.long	sys_sendfile64
+/* 240 */	.long	sys_futex_wrapper
+		.long	sys_sched_setaffinity
+		.long	sys_sched_getaffinity
+		.long	sys_io_setup
+		.long	sys_io_destroy
+/* 245 */	.long	sys_io_getevents
+		.long	sys_io_submit
+		.long	sys_io_cancel
+		.long	sys_exit_group
+		.long	sys_lookup_dcookie
+/* 250 */	.long	sys_epoll_create
+		.long	sys_epoll_ctl
+		.long	sys_epoll_wait
+	 	.long	sys_remap_file_pages
+		.long	sys_ni_syscall	/* sys_set_thread_area */
+/* 255 */	.long	sys_ni_syscall	/* sys_get_thread_area */
+ 		.long	sys_set_tid_address
+		.long	sys_timer_create
+		.long	sys_timer_settime
+		.long	sys_timer_gettime
+/* 260 */	.long	sys_timer_getoverrun
+		.long	sys_timer_delete
+		.long	sys_clock_settime
+		.long	sys_clock_gettime
+		.long	sys_clock_getres
+/* 265 */	.long	sys_clock_nanosleep
+		.long	sys_statfs64
+		.long	sys_fstatfs64
+		.long	sys_tgkill
+		.long	sys_utimes
+/* 270 */	.long	sys_fadvise64_64
+		.long	sys_pciconfig_iobase
+		.long	sys_pciconfig_read
+		.long	sys_pciconfig_write
+		.long	sys_mq_open
+/* 275 */	.long	sys_mq_unlink
+		.long	sys_mq_timedsend
+		.long	sys_mq_timedreceive
+		.long	sys_mq_notify
+		.long	sys_mq_getsetattr
+/* 280 */	.long	sys_waitid
+		.long	sys_socket
+		.long	sys_bind
+		.long	sys_connect
+		.long	sys_listen
+/* 285 */	.long	sys_accept
+		.long	sys_getsockname
+		.long	sys_getpeername
+		.long	sys_socketpair
+		.long	sys_send
+/* 290 */	.long	sys_sendto
+		.long	sys_recv
+		.long	sys_recvfrom
+		.long	sys_shutdown
+		.long	sys_setsockopt
+/* 295 */	.long	sys_getsockopt
+		.long	sys_sendmsg
+		.long	sys_recvmsg
+		.long	sys_semop
+		.long	sys_semget
+/* 300 */	.long	sys_semctl
+		.long	sys_msgsnd
+		.long	sys_msgrcv
+		.long	sys_msgget
+		.long	sys_msgctl
+/* 305 */	.long	sys_shmat
+		.long	sys_shmdt
+		.long	sys_shmget
+		.long	sys_shmctl
+		.long	sys_add_key
+/* 310 */	.long	sys_request_key
+		.long	sys_keyctl
+		.long	sys_semtimedop
+__syscall_end:
+
+		.rept	NR_syscalls - (__syscall_end - __syscall_start) / 4
+			.long	sys_ni_syscall
+		.endr
+#endif
diff --git a/arch/arm/kernel/compat.c b/arch/arm/kernel/compat.c
new file mode 100644
index 000000000000..7195add42e74
--- /dev/null
+++ b/arch/arm/kernel/compat.c
@@ -0,0 +1,225 @@
+/*
+ *  linux/arch/arm/kernel/compat.c
+ *
+ *  Copyright (C) 2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * We keep the old params compatibility cruft in one place (here)
+ * so we don't end up with lots of mess around other places.
+ *
+ * NOTE:
+ *  The old struct param_struct is deprecated, but it will be kept in
+ *  the kernel for 5 years from now (2001). This will allow boot loaders
+ *  to convert to the new struct tag way.
+ */
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/page.h>
+
+#include <asm/mach/arch.h>
+
+/*
+ * Usage:
+ *  - do not go blindly adding fields, add them at the end
+ *  - when adding fields, don't rely on the address until
+ *    a patch from me has been released
+ *  - unused fields should be zero (for future expansion)
+ *  - this structure is relatively short-lived - only
+ *    guaranteed to contain useful data in setup_arch()
+ *
+ * This is the old deprecated way to pass parameters to the kernel
+ */
+struct param_struct {
+    union {
+	struct {
+	    unsigned long page_size;		/*  0 */
+	    unsigned long nr_pages;		/*  4 */
+	    unsigned long ramdisk_size;		/*  8 */
+	    unsigned long flags;		/* 12 */
+#define FLAG_READONLY	1
+#define FLAG_RDLOAD	4
+#define FLAG_RDPROMPT	8
+	    unsigned long rootdev;		/* 16 */
+	    unsigned long video_num_cols;	/* 20 */
+	    unsigned long video_num_rows;	/* 24 */
+	    unsigned long video_x;		/* 28 */
+	    unsigned long video_y;		/* 32 */
+	    unsigned long memc_control_reg;	/* 36 */
+	    unsigned char sounddefault;		/* 40 */
+	    unsigned char adfsdrives;		/* 41 */
+	    unsigned char bytes_per_char_h;	/* 42 */
+	    unsigned char bytes_per_char_v;	/* 43 */
+	    unsigned long pages_in_bank[4];	/* 44 */
+	    unsigned long pages_in_vram;	/* 60 */
+	    unsigned long initrd_start;		/* 64 */
+	    unsigned long initrd_size;		/* 68 */
+	    unsigned long rd_start;		/* 72 */
+	    unsigned long system_rev;		/* 76 */
+	    unsigned long system_serial_low;	/* 80 */
+	    unsigned long system_serial_high;	/* 84 */
+	    unsigned long mem_fclk_21285;       /* 88 */
+	} s;
+	char unused[256];
+    } u1;
+    union {
+	char paths[8][128];
+	struct {
+	    unsigned long magic;
+	    char n[1024 - sizeof(unsigned long)];
+	} s;
+    } u2;
+    char commandline[COMMAND_LINE_SIZE];
+};
+
+static struct tag * __init memtag(struct tag *tag, unsigned long start, unsigned long size)
+{
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_MEM;
+	tag->hdr.size = tag_size(tag_mem32);
+	tag->u.mem.size = size;
+	tag->u.mem.start = start;
+
+	return tag;
+}
+
+static void __init build_tag_list(struct param_struct *params, void *taglist)
+{
+	struct tag *tag = taglist;
+
+	if (params->u1.s.page_size != PAGE_SIZE) {
+		printk(KERN_WARNING "Warning: bad configuration page, "
+		       "trying to continue\n");
+		return;
+	}
+
+	printk(KERN_DEBUG "Converting old-style param struct to taglist\n");
+
+#ifdef CONFIG_ARCH_NETWINDER
+	if (params->u1.s.nr_pages != 0x02000 &&
+	    params->u1.s.nr_pages != 0x04000 &&
+	    params->u1.s.nr_pages != 0x08000 &&
+	    params->u1.s.nr_pages != 0x10000) {
+		printk(KERN_WARNING "Warning: bad NeTTrom parameters "
+		       "detected, using defaults\n");
+
+		params->u1.s.nr_pages = 0x1000;	/* 16MB */
+		params->u1.s.ramdisk_size = 0;
+		params->u1.s.flags = FLAG_READONLY;
+		params->u1.s.initrd_start = 0;
+		params->u1.s.initrd_size = 0;
+		params->u1.s.rd_start = 0;
+	}
+#endif
+
+	tag->hdr.tag  = ATAG_CORE;
+	tag->hdr.size = tag_size(tag_core);
+	tag->u.core.flags = params->u1.s.flags & FLAG_READONLY;
+	tag->u.core.pagesize = params->u1.s.page_size;
+	tag->u.core.rootdev = params->u1.s.rootdev;
+
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_RAMDISK;
+	tag->hdr.size = tag_size(tag_ramdisk);
+	tag->u.ramdisk.flags = (params->u1.s.flags & FLAG_RDLOAD ? 1 : 0) |
+			       (params->u1.s.flags & FLAG_RDPROMPT ? 2 : 0);
+	tag->u.ramdisk.size  = params->u1.s.ramdisk_size;
+	tag->u.ramdisk.start = params->u1.s.rd_start;
+
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_INITRD;
+	tag->hdr.size = tag_size(tag_initrd);
+	tag->u.initrd.start = params->u1.s.initrd_start;
+	tag->u.initrd.size  = params->u1.s.initrd_size;
+
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_SERIAL;
+	tag->hdr.size = tag_size(tag_serialnr);
+	tag->u.serialnr.low = params->u1.s.system_serial_low;
+	tag->u.serialnr.high = params->u1.s.system_serial_high;
+
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_REVISION;
+	tag->hdr.size = tag_size(tag_revision);
+	tag->u.revision.rev = params->u1.s.system_rev;
+
+#ifdef CONFIG_ARCH_ACORN
+	if (machine_is_riscpc()) {
+		int i;
+		for (i = 0; i < 4; i++)
+			tag = memtag(tag, PHYS_OFFSET + (i << 26),
+				 params->u1.s.pages_in_bank[i] * PAGE_SIZE);
+	} else
+#endif
+	tag = memtag(tag, PHYS_OFFSET, params->u1.s.nr_pages * PAGE_SIZE);
+
+#ifdef CONFIG_FOOTBRIDGE
+	if (params->u1.s.mem_fclk_21285) {
+		tag = tag_next(tag);
+		tag->hdr.tag = ATAG_MEMCLK;
+		tag->hdr.size = tag_size(tag_memclk);
+		tag->u.memclk.fmemclk = params->u1.s.mem_fclk_21285;
+	}
+#endif
+
+#ifdef CONFIG_ARCH_EBSA285
+	if (machine_is_ebsa285()) {
+		tag = tag_next(tag);
+		tag->hdr.tag = ATAG_VIDEOTEXT;
+		tag->hdr.size = tag_size(tag_videotext);
+		tag->u.videotext.x            = params->u1.s.video_x;
+		tag->u.videotext.y            = params->u1.s.video_y;
+		tag->u.videotext.video_page   = 0;
+		tag->u.videotext.video_mode   = 0;
+		tag->u.videotext.video_cols   = params->u1.s.video_num_cols;
+		tag->u.videotext.video_ega_bx = 0;
+		tag->u.videotext.video_lines  = params->u1.s.video_num_rows;
+		tag->u.videotext.video_isvga  = 1;
+		tag->u.videotext.video_points = 8;
+	}
+#endif
+
+#ifdef CONFIG_ARCH_ACORN
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_ACORN;
+	tag->hdr.size = tag_size(tag_acorn);
+	tag->u.acorn.memc_control_reg = params->u1.s.memc_control_reg;
+	tag->u.acorn.vram_pages       = params->u1.s.pages_in_vram;
+	tag->u.acorn.sounddefault     = params->u1.s.sounddefault;
+	tag->u.acorn.adfsdrives       = params->u1.s.adfsdrives;
+#endif
+
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_CMDLINE;
+	tag->hdr.size = (strlen(params->commandline) + 3 +
+			 sizeof(struct tag_header)) >> 2;
+	strcpy(tag->u.cmdline.cmdline, params->commandline);
+
+	tag = tag_next(tag);
+	tag->hdr.tag = ATAG_NONE;
+	tag->hdr.size = 0;
+
+	memmove(params, taglist, ((int)tag) - ((int)taglist) +
+				 sizeof(struct tag_header));
+}
+
+void __init convert_to_tag_list(struct tag *tags)
+{
+	struct param_struct *params = (struct param_struct *)tags;
+	build_tag_list(params, &params->u2);
+}
+
+void __init squash_mem_tags(struct tag *tag)
+{
+	for (; tag->hdr.size; tag = tag_next(tag))
+		if (tag->hdr.tag == ATAG_MEM)
+			tag->hdr.tag = ATAG_NONE;
+}
diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S
new file mode 100644
index 000000000000..caaa919ab47a
--- /dev/null
+++ b/arch/arm/kernel/debug.S
@@ -0,0 +1,106 @@
+/*
+ *  linux/arch/arm/kernel/debug.S
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  32-bit debugging code
+ */
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <asm/hardware.h>
+
+		.text
+
+/*
+ * Some debugging routines (useful if you've got MM problems and
+ * printk isn't working).  For DEBUGGING ONLY!!!  Do not leave
+ * references to these in a production kernel!
+ */
+
+#if defined(CONFIG_DEBUG_ICEDCC)
+		@@ debug using ARM EmbeddedICE DCC channel
+		.macro	addruart, rx
+		.endm
+
+		.macro	senduart, rd, rx
+		mcr	p14, 0, \rd, c1, c0, 0
+		.endm
+
+		.macro	busyuart, rd, rx
+1001:
+		mrc	p14, 0, \rx, c0, c0, 0
+		tst	\rx, #2
+		beq	1001b
+
+		.endm
+
+		.macro	waituart, rd, rx
+		mov	\rd, #0x2000000
+1001:
+		subs	\rd, \rd, #1
+		bmi	1002f
+		mrc	p14, 0, \rx, c0, c0, 0
+		tst	\rx, #2
+		bne	1001b
+1002:
+		.endm
+#else
+#include <asm/arch/debug-macro.S>
+#endif
+
+/*
+ * Useful debugging routines
+ */
+ENTRY(printhex8)
+		mov	r1, #8
+		b	printhex
+
+ENTRY(printhex4)
+		mov	r1, #4
+		b	printhex
+
+ENTRY(printhex2)
+		mov	r1, #2
+printhex:	adr	r2, hexbuf
+		add	r3, r2, r1
+		mov	r1, #0
+		strb	r1, [r3]
+1:		and	r1, r0, #15
+		mov	r0, r0, lsr #4
+		cmp	r1, #10
+		addlt	r1, r1, #'0'
+		addge	r1, r1, #'a' - 10
+		strb	r1, [r3, #-1]!
+		teq	r3, r2
+		bne	1b
+		mov	r0, r2
+		b	printascii
+
+		.ltorg
+
+ENTRY(printascii)
+		addruart r3
+		b	2f
+1:		waituart r2, r3
+		senduart r1, r3
+		busyuart r2, r3
+		teq	r1, #'\n'
+		moveq	r1, #'\r'
+		beq	1b
+2:		teq	r0, #0
+		ldrneb	r1, [r0], #1
+		teqne	r1, #0
+		bne	1b
+		mov	pc, lr
+
+ENTRY(printch)
+		addruart r3
+		mov	r1, r0
+		mov	r0, #0
+		b	1b
+
+hexbuf:		.space 16
diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
new file mode 100644
index 000000000000..e9a36304ec3e
--- /dev/null
+++ b/arch/arm/kernel/dma-isa.c
@@ -0,0 +1,207 @@
+/*
+ *  linux/arch/arm/kernel/dma-isa.c
+ *
+ *  Copyright (C) 1999-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  ISA DMA primitives
+ *  Taken from various sources, including:
+ *   linux/include/asm/dma.h: Defines for using and allocating dma channels.
+ *     Written by Hennus Bergman, 1992.
+ *     High DMA channel support & info by Hannu Savolainen and John Boyd,
+ *     Nov. 1992.
+ *   arch/arm/kernel/dma-ebsa285.c
+ *   Copyright (C) 1998 Phil Blundell
+ */
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+
+#include <asm/dma.h>
+#include <asm/io.h>
+
+#include <asm/mach/dma.h>
+
+#define ISA_DMA_MODE_READ	0x44
+#define ISA_DMA_MODE_WRITE	0x48
+#define ISA_DMA_MODE_CASCADE	0xc0
+#define ISA_DMA_AUTOINIT	0x10
+
+#define ISA_DMA_MASK		0
+#define ISA_DMA_MODE		1
+#define ISA_DMA_CLRFF		2
+#define ISA_DMA_PGHI		3
+#define ISA_DMA_PGLO		4
+#define ISA_DMA_ADDR		5
+#define ISA_DMA_COUNT		6
+
+static unsigned int isa_dma_port[8][7] = {
+	/* MASK   MODE   CLRFF  PAGE_HI PAGE_LO ADDR COUNT */
+	{  0x0a,  0x0b,  0x0c,  0x487,  0x087,  0x00, 0x01 },
+	{  0x0a,  0x0b,  0x0c,  0x483,  0x083,  0x02, 0x03 },
+	{  0x0a,  0x0b,  0x0c,  0x481,  0x081,  0x04, 0x05 },
+	{  0x0a,  0x0b,  0x0c,  0x482,  0x082,  0x06, 0x07 },
+	{  0xd4,  0xd6,  0xd8,  0x000,  0x000,  0xc0, 0xc2 },
+	{  0xd4,  0xd6,  0xd8,  0x48b,  0x08b,  0xc4, 0xc6 },
+	{  0xd4,  0xd6,  0xd8,  0x489,  0x089,  0xc8, 0xca },
+	{  0xd4,  0xd6,  0xd8,  0x48a,  0x08a,  0xcc, 0xce }
+};
+
+static int isa_get_dma_residue(dmach_t channel, dma_t *dma)
+{
+	unsigned int io_port = isa_dma_port[channel][ISA_DMA_COUNT];
+	int count;
+
+	count = 1 + inb(io_port);
+	count |= inb(io_port) << 8;
+
+	return channel < 4 ? count : (count << 1);
+}
+
+static void isa_enable_dma(dmach_t channel, dma_t *dma)
+{
+	if (dma->invalid) {
+		unsigned long address, length;
+		unsigned int mode, direction;
+
+		mode = channel & 3;
+		switch (dma->dma_mode & DMA_MODE_MASK) {
+		case DMA_MODE_READ:
+			mode |= ISA_DMA_MODE_READ;
+			direction = PCI_DMA_FROMDEVICE;
+			break;
+
+		case DMA_MODE_WRITE:
+			mode |= ISA_DMA_MODE_WRITE;
+			direction = PCI_DMA_TODEVICE;
+			break;
+
+		case DMA_MODE_CASCADE:
+			mode |= ISA_DMA_MODE_CASCADE;
+			direction = PCI_DMA_BIDIRECTIONAL;
+			break;
+
+		default:
+			direction = PCI_DMA_NONE;
+			break;
+		}
+
+		if (!dma->using_sg) {
+			/*
+			 * Cope with ISA-style drivers which expect cache
+			 * coherence.
+			 */
+			dma->buf.dma_address = pci_map_single(NULL,
+				dma->buf.__address, dma->buf.length,
+				direction);
+		}
+
+		address = dma->buf.dma_address;
+		length  = dma->buf.length - 1;
+
+		outb(address >> 16, isa_dma_port[channel][ISA_DMA_PGLO]);
+		outb(address >> 24, isa_dma_port[channel][ISA_DMA_PGHI]);
+
+		if (channel >= 4) {
+			address >>= 1;
+			length >>= 1;
+		}
+
+		outb(0, isa_dma_port[channel][ISA_DMA_CLRFF]);
+
+		outb(address, isa_dma_port[channel][ISA_DMA_ADDR]);
+		outb(address >> 8, isa_dma_port[channel][ISA_DMA_ADDR]);
+
+		outb(length, isa_dma_port[channel][ISA_DMA_COUNT]);
+		outb(length >> 8, isa_dma_port[channel][ISA_DMA_COUNT]);
+
+		if (dma->dma_mode & DMA_AUTOINIT)
+			mode |= ISA_DMA_AUTOINIT;
+
+		outb(mode, isa_dma_port[channel][ISA_DMA_MODE]);
+		dma->invalid = 0;
+	}
+	outb(channel & 3, isa_dma_port[channel][ISA_DMA_MASK]);
+}
+
+static void isa_disable_dma(dmach_t channel, dma_t *dma)
+{
+	outb(channel | 4, isa_dma_port[channel][ISA_DMA_MASK]);
+}
+
+static struct dma_ops isa_dma_ops = {
+	.type		= "ISA",
+	.enable		= isa_enable_dma,
+	.disable	= isa_disable_dma,
+	.residue	= isa_get_dma_residue,
+};
+
+static struct resource dma_resources[] = {
+	{ "dma1",		0x0000, 0x000f },
+	{ "dma low page", 	0x0080, 0x008f },
+	{ "dma2",		0x00c0, 0x00df },
+	{ "dma high page",	0x0480, 0x048f }
+};
+
+void __init isa_init_dma(dma_t *dma)
+{
+	/*
+	 * Try to autodetect presence of an ISA DMA controller.
+	 * We do some minimal initialisation, and check that
+	 * channel 0's DMA address registers are writeable.
+	 */
+	outb(0xff, 0x0d);
+	outb(0xff, 0xda);
+
+	/*
+	 * Write high and low address, and then read them back
+	 * in the same order.
+	 */
+	outb(0x55, 0x00);
+	outb(0xaa, 0x00);
+
+	if (inb(0) == 0x55 && inb(0) == 0xaa) {
+		int channel, i;
+
+		for (channel = 0; channel < 8; channel++) {
+			dma[channel].d_ops = &isa_dma_ops;
+			isa_disable_dma(channel, NULL);
+		}
+
+		outb(0x40, 0x0b);
+		outb(0x41, 0x0b);
+		outb(0x42, 0x0b);
+		outb(0x43, 0x0b);
+
+		outb(0xc0, 0xd6);
+		outb(0x41, 0xd6);
+		outb(0x42, 0xd6);
+		outb(0x43, 0xd6);
+
+		outb(0, 0xd4);
+
+		outb(0x10, 0x08);
+		outb(0x10, 0xd0);
+
+		/*
+		 * Is this correct?  According to my documentation, it
+		 * doesn't appear to be.  It should be:
+		 *  outb(0x3f, 0x40b); outb(0x3f, 0x4d6);
+		 */
+		outb(0x30, 0x40b);
+		outb(0x31, 0x40b);
+		outb(0x32, 0x40b);
+		outb(0x33, 0x40b);
+		outb(0x31, 0x4d6);
+		outb(0x32, 0x4d6);
+		outb(0x33, 0x4d6);
+
+		request_dma(DMA_ISA_CASCADE, "cascade");
+
+		for (i = 0; i < sizeof(dma_resources) / sizeof(dma_resources[0]); i++)
+			request_resource(&ioport_resource, dma_resources + i);
+	}
+}
diff --git a/arch/arm/kernel/dma.c b/arch/arm/kernel/dma.c
new file mode 100644
index 000000000000..2b7883884234
--- /dev/null
+++ b/arch/arm/kernel/dma.c
@@ -0,0 +1,302 @@
+/*
+ *  linux/arch/arm/kernel/dma.c
+ *
+ *  Copyright (C) 1995-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Front-end to the DMA handling.  This handles the allocation/freeing
+ *  of DMA channels, and provides a unified interface to the machines
+ *  DMA facilities.
+ */
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/mman.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+
+#include <asm/dma.h>
+
+#include <asm/mach/dma.h>
+
+DEFINE_SPINLOCK(dma_spin_lock);
+
+#if MAX_DMA_CHANNELS > 0
+
+static dma_t dma_chan[MAX_DMA_CHANNELS];
+
+/*
+ * Get dma list for /proc/dma
+ */
+int get_dma_list(char *buf)
+{
+	dma_t *dma;
+	char *p = buf;
+	int i;
+
+	for (i = 0, dma = dma_chan; i < MAX_DMA_CHANNELS; i++, dma++)
+		if (dma->lock)
+			p += sprintf(p, "%2d: %14s %s\n", i,
+				     dma->d_ops->type, dma->device_id);
+
+	return p - buf;
+}
+
+/*
+ * Request DMA channel
+ *
+ * On certain platforms, we have to allocate an interrupt as well...
+ */
+int request_dma(dmach_t channel, const char *device_id)
+{
+	dma_t *dma = dma_chan + channel;
+	int ret;
+
+	if (channel >= MAX_DMA_CHANNELS || !dma->d_ops)
+		goto bad_dma;
+
+	if (xchg(&dma->lock, 1) != 0)
+		goto busy;
+
+	dma->device_id = device_id;
+	dma->active    = 0;
+	dma->invalid   = 1;
+
+	ret = 0;
+	if (dma->d_ops->request)
+		ret = dma->d_ops->request(channel, dma);
+
+	if (ret)
+		xchg(&dma->lock, 0);
+
+	return ret;
+
+bad_dma:
+	printk(KERN_ERR "dma: trying to allocate DMA%d\n", channel);
+	return -EINVAL;
+
+busy:
+	return -EBUSY;
+}
+
+/*
+ * Free DMA channel
+ *
+ * On certain platforms, we have to free interrupt as well...
+ */
+void free_dma(dmach_t channel)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (channel >= MAX_DMA_CHANNELS || !dma->d_ops)
+		goto bad_dma;
+
+	if (dma->active) {
+		printk(KERN_ERR "dma%d: freeing active DMA\n", channel);
+		dma->d_ops->disable(channel, dma);
+		dma->active = 0;
+	}
+
+	if (xchg(&dma->lock, 0) != 0) {
+		if (dma->d_ops->free)
+			dma->d_ops->free(channel, dma);
+		return;
+	}
+
+	printk(KERN_ERR "dma%d: trying to free free DMA\n", channel);
+	return;
+
+bad_dma:
+	printk(KERN_ERR "dma: trying to free DMA%d\n", channel);
+}
+
+/* Set DMA Scatter-Gather list
+ */
+void set_dma_sg (dmach_t channel, struct scatterlist *sg, int nr_sg)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (dma->active)
+		printk(KERN_ERR "dma%d: altering DMA SG while "
+		       "DMA active\n", channel);
+
+	dma->sg = sg;
+	dma->sgcount = nr_sg;
+	dma->using_sg = 1;
+	dma->invalid = 1;
+}
+
+/* Set DMA address
+ *
+ * Copy address to the structure, and set the invalid bit
+ */
+void set_dma_addr (dmach_t channel, unsigned long physaddr)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (dma->active)
+		printk(KERN_ERR "dma%d: altering DMA address while "
+		       "DMA active\n", channel);
+
+	dma->sg = &dma->buf;
+	dma->sgcount = 1;
+	dma->buf.__address = bus_to_virt(physaddr);
+	dma->using_sg = 0;
+	dma->invalid = 1;
+}
+
+/* Set DMA byte count
+ *
+ * Copy address to the structure, and set the invalid bit
+ */
+void set_dma_count (dmach_t channel, unsigned long count)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (dma->active)
+		printk(KERN_ERR "dma%d: altering DMA count while "
+		       "DMA active\n", channel);
+
+	dma->sg = &dma->buf;
+	dma->sgcount = 1;
+	dma->buf.length = count;
+	dma->using_sg = 0;
+	dma->invalid = 1;
+}
+
+/* Set DMA direction mode
+ */
+void set_dma_mode (dmach_t channel, dmamode_t mode)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (dma->active)
+		printk(KERN_ERR "dma%d: altering DMA mode while "
+		       "DMA active\n", channel);
+
+	dma->dma_mode = mode;
+	dma->invalid = 1;
+}
+
+/* Enable DMA channel
+ */
+void enable_dma (dmach_t channel)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (!dma->lock)
+		goto free_dma;
+
+	if (dma->active == 0) {
+		dma->active = 1;
+		dma->d_ops->enable(channel, dma);
+	}
+	return;
+
+free_dma:
+	printk(KERN_ERR "dma%d: trying to enable free DMA\n", channel);
+	BUG();
+}
+
+/* Disable DMA channel
+ */
+void disable_dma (dmach_t channel)
+{
+	dma_t *dma = dma_chan + channel;
+
+	if (!dma->lock)
+		goto free_dma;
+
+	if (dma->active == 1) {
+		dma->active = 0;
+		dma->d_ops->disable(channel, dma);
+	}
+	return;
+
+free_dma:
+	printk(KERN_ERR "dma%d: trying to disable free DMA\n", channel);
+	BUG();
+}
+
+/*
+ * Is the specified DMA channel active?
+ */
+int dma_channel_active(dmach_t channel)
+{
+	return dma_chan[channel].active;
+}
+
+void set_dma_page(dmach_t channel, char pagenr)
+{
+	printk(KERN_ERR "dma%d: trying to set_dma_page\n", channel);
+}
+
+void set_dma_speed(dmach_t channel, int cycle_ns)
+{
+	dma_t *dma = dma_chan + channel;
+	int ret = 0;
+
+	if (dma->d_ops->setspeed)
+		ret = dma->d_ops->setspeed(channel, dma, cycle_ns);
+	dma->speed = ret;
+}
+
+int get_dma_residue(dmach_t channel)
+{
+	dma_t *dma = dma_chan + channel;
+	int ret = 0;
+
+	if (dma->d_ops->residue)
+		ret = dma->d_ops->residue(channel, dma);
+
+	return ret;
+}
+
+void __init init_dma(void)
+{
+	arch_dma_init(dma_chan);
+}
+
+#else
+
+int request_dma(dmach_t channel, const char *device_id)
+{
+	return -EINVAL;
+}
+
+int get_dma_residue(dmach_t channel)
+{
+	return 0;
+}
+
+#define GLOBAL_ALIAS(_a,_b) asm (".set " #_a "," #_b "; .globl " #_a)
+GLOBAL_ALIAS(disable_dma, get_dma_residue);
+GLOBAL_ALIAS(enable_dma, get_dma_residue);
+GLOBAL_ALIAS(free_dma, get_dma_residue);
+GLOBAL_ALIAS(get_dma_list, get_dma_residue);
+GLOBAL_ALIAS(set_dma_mode, get_dma_residue);
+GLOBAL_ALIAS(set_dma_page, get_dma_residue);
+GLOBAL_ALIAS(set_dma_count, get_dma_residue);
+GLOBAL_ALIAS(set_dma_addr, get_dma_residue);
+GLOBAL_ALIAS(set_dma_sg, get_dma_residue);
+GLOBAL_ALIAS(set_dma_speed, get_dma_residue);
+GLOBAL_ALIAS(init_dma, get_dma_residue);
+
+#endif
+
+EXPORT_SYMBOL(request_dma);
+EXPORT_SYMBOL(free_dma);
+EXPORT_SYMBOL(enable_dma);
+EXPORT_SYMBOL(disable_dma);
+EXPORT_SYMBOL(set_dma_addr);
+EXPORT_SYMBOL(set_dma_count);
+EXPORT_SYMBOL(set_dma_mode);
+EXPORT_SYMBOL(set_dma_page);
+EXPORT_SYMBOL(get_dma_residue);
+EXPORT_SYMBOL(set_dma_sg);
+EXPORT_SYMBOL(set_dma_speed);
+
+EXPORT_SYMBOL(dma_spin_lock);
diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
new file mode 100644
index 000000000000..3dc15b131f53
--- /dev/null
+++ b/arch/arm/kernel/ecard.c
@@ -0,0 +1,1210 @@
+/*
+ *  linux/arch/arm/kernel/ecard.c
+ *
+ *  Copyright 1995-2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Find all installed expansion cards, and handle interrupts from them.
+ *
+ *  Created from information from Acorns RiscOS3 PRMs
+ *
+ *  08-Dec-1996	RMK	Added code for the 9'th expansion card - the ether
+ *			podule slot.
+ *  06-May-1997	RMK	Added blacklist for cards whose loader doesn't work.
+ *  12-Sep-1997	RMK	Created new handling of interrupt enables/disables
+ *			- cards can now register their own routine to control
+ *			interrupts (recommended).
+ *  29-Sep-1997	RMK	Expansion card interrupt hardware not being re-enabled
+ *			on reset from Linux. (Caused cards not to respond
+ *			under RiscOS without hard reset).
+ *  15-Feb-1998	RMK	Added DMA support
+ *  12-Sep-1998	RMK	Added EASI support
+ *  10-Jan-1999	RMK	Run loaders in a simulated RISC OS environment.
+ *  17-Apr-1999	RMK	Support for EASI Type C cycles.
+ */
+#define ECARD_C
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/completion.h>
+#include <linux/reboot.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/proc_fs.h>
+#include <linux/device.h>
+#include <linux/init.h>
+
+#include <asm/dma.h>
+#include <asm/ecard.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mmu_context.h>
+#include <asm/mach/irq.h>
+#include <asm/tlbflush.h>
+
+#ifndef CONFIG_ARCH_RPC
+#define HAVE_EXPMASK
+#endif
+
+struct ecard_request {
+	void		(*fn)(struct ecard_request *);
+	ecard_t		*ec;
+	unsigned int	address;
+	unsigned int	length;
+	unsigned int	use_loader;
+	void		*buffer;
+	struct completion *complete;
+};
+
+struct expcard_blacklist {
+	unsigned short	 manufacturer;
+	unsigned short	 product;
+	const char	*type;
+};
+
+static ecard_t *cards;
+static ecard_t *slot_to_expcard[MAX_ECARDS];
+static unsigned int ectcr;
+#ifdef HAS_EXPMASK
+static unsigned int have_expmask;
+#endif
+
+/* List of descriptions of cards which don't have an extended
+ * identification, or chunk directories containing a description.
+ */
+static struct expcard_blacklist __initdata blacklist[] = {
+	{ MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" }
+};
+
+asmlinkage extern int
+ecard_loader_reset(unsigned long base, loader_t loader);
+asmlinkage extern int
+ecard_loader_read(int off, unsigned long base, loader_t loader);
+
+static inline unsigned short ecard_getu16(unsigned char *v)
+{
+	return v[0] | v[1] << 8;
+}
+
+static inline signed long ecard_gets24(unsigned char *v)
+{
+	return v[0] | v[1] << 8 | v[2] << 16 | ((v[2] & 0x80) ? 0xff000000 : 0);
+}
+
+static inline ecard_t *slot_to_ecard(unsigned int slot)
+{
+	return slot < MAX_ECARDS ? slot_to_expcard[slot] : NULL;
+}
+
+/* ===================== Expansion card daemon ======================== */
+/*
+ * Since the loader programs on the expansion cards need to be run
+ * in a specific environment, create a separate task with this
+ * environment up, and pass requests to this task as and when we
+ * need to.
+ *
+ * This should allow 99% of loaders to be called from Linux.
+ *
+ * From a security standpoint, we trust the card vendors.  This
+ * may be a misplaced trust.
+ */
+static void ecard_task_reset(struct ecard_request *req)
+{
+	struct expansion_card *ec = req->ec;
+	struct resource *res;
+
+	res = ec->slot_no == 8
+		? &ec->resource[ECARD_RES_MEMC]
+		: ec->type == ECARD_EASI
+		  ? &ec->resource[ECARD_RES_EASI]
+		  : &ec->resource[ECARD_RES_IOCSYNC];
+
+	ecard_loader_reset(res->start, ec->loader);
+}
+
+static void ecard_task_readbytes(struct ecard_request *req)
+{
+	struct expansion_card *ec = req->ec;
+	unsigned char *buf = req->buffer;
+	unsigned int len = req->length;
+	unsigned int off = req->address;
+
+	if (ec->slot_no == 8) {
+		void __iomem *base = (void __iomem *)
+				ec->resource[ECARD_RES_MEMC].start;
+
+		/*
+		 * The card maintains an index which increments the address
+		 * into a 4096-byte page on each access.  We need to keep
+		 * track of the counter.
+		 */
+		static unsigned int index;
+		unsigned int page;
+
+		page = (off >> 12) * 4;
+		if (page > 256 * 4)
+			return;
+
+		off &= 4095;
+
+		/*
+		 * If we are reading offset 0, or our current index is
+		 * greater than the offset, reset the hardware index counter.
+		 */
+		if (off == 0 || index > off) {
+			writeb(0, base);
+			index = 0;
+		}
+
+		/*
+		 * Increment the hardware index counter until we get to the
+		 * required offset.  The read bytes are discarded.
+		 */
+		while (index < off) {
+			readb(base + page);
+			index += 1;
+		}
+
+		while (len--) {
+			*buf++ = readb(base + page);
+			index += 1;
+		}
+	} else {
+		unsigned long base = (ec->type == ECARD_EASI
+			 ? &ec->resource[ECARD_RES_EASI]
+			 : &ec->resource[ECARD_RES_IOCSYNC])->start;
+		void __iomem *pbase = (void __iomem *)base;
+
+		if (!req->use_loader || !ec->loader) {
+			off *= 4;
+			while (len--) {
+				*buf++ = readb(pbase + off);
+				off += 4;
+			}
+		} else {
+			while(len--) {
+				/*
+				 * The following is required by some
+				 * expansion card loader programs.
+				 */
+				*(unsigned long *)0x108 = 0;
+				*buf++ = ecard_loader_read(off++, base,
+							   ec->loader);
+			}
+		}
+	}
+
+}
+
+static DECLARE_WAIT_QUEUE_HEAD(ecard_wait);
+static struct ecard_request *ecard_req;
+static DECLARE_MUTEX(ecard_sem);
+
+/*
+ * Set up the expansion card daemon's page tables.
+ */
+static void ecard_init_pgtables(struct mm_struct *mm)
+{
+	struct vm_area_struct vma;
+
+	/* We want to set up the page tables for the following mapping:
+	 *  Virtual	Physical
+	 *  0x03000000	0x03000000
+	 *  0x03010000	unmapped
+	 *  0x03210000	0x03210000
+	 *  0x03400000	unmapped
+	 *  0x08000000	0x08000000
+	 *  0x10000000	unmapped
+	 *
+	 * FIXME: we don't follow this 100% yet.
+	 */
+	pgd_t *src_pgd, *dst_pgd;
+
+	src_pgd = pgd_offset(mm, (unsigned long)IO_BASE);
+	dst_pgd = pgd_offset(mm, IO_START);
+
+	memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (IO_SIZE / PGDIR_SIZE));
+
+	src_pgd = pgd_offset(mm, EASI_BASE);
+	dst_pgd = pgd_offset(mm, EASI_START);
+
+	memcpy(dst_pgd, src_pgd, sizeof(pgd_t) * (EASI_SIZE / PGDIR_SIZE));
+
+	vma.vm_mm = mm;
+
+	flush_tlb_range(&vma, IO_START, IO_START + IO_SIZE);
+	flush_tlb_range(&vma, EASI_START, EASI_START + EASI_SIZE);
+}
+
+static int ecard_init_mm(void)
+{
+	struct mm_struct * mm = mm_alloc();
+	struct mm_struct *active_mm = current->active_mm;
+
+	if (!mm)
+		return -ENOMEM;
+
+	current->mm = mm;
+	current->active_mm = mm;
+	activate_mm(active_mm, mm);
+	mmdrop(active_mm);
+	ecard_init_pgtables(mm);
+	return 0;
+}
+
+static int
+ecard_task(void * unused)
+{
+	daemonize("kecardd");
+
+	/*
+	 * Allocate a mm.  We're not a lazy-TLB kernel task since we need
+	 * to set page table entries where the user space would be.  Note
+	 * that this also creates the page tables.  Failure is not an
+	 * option here.
+	 */
+	if (ecard_init_mm())
+		panic("kecardd: unable to alloc mm\n");
+
+	while (1) {
+		struct ecard_request *req;
+
+		wait_event_interruptible(ecard_wait, ecard_req != NULL);
+
+		req = xchg(&ecard_req, NULL);
+		if (req != NULL) {
+			req->fn(req);
+			complete(req->complete);
+		}
+	}
+}
+
+/*
+ * Wake the expansion card daemon to action our request.
+ *
+ * FIXME: The test here is not sufficient to detect if the
+ * kcardd is running.
+ */
+static void ecard_call(struct ecard_request *req)
+{
+	DECLARE_COMPLETION(completion);
+
+	req->complete = &completion;
+
+	down(&ecard_sem);
+	ecard_req = req;
+	wake_up(&ecard_wait);
+
+	/*
+	 * Now wait for kecardd to run.
+	 */
+	wait_for_completion(&completion);
+	up(&ecard_sem);
+}
+
+/* ======================= Mid-level card control ===================== */
+
+static void
+ecard_readbytes(void *addr, ecard_t *ec, int off, int len, int useld)
+{
+	struct ecard_request req;
+
+	req.fn		= ecard_task_readbytes;
+	req.ec		= ec;
+	req.address	= off;
+	req.length	= len;
+	req.use_loader	= useld;
+	req.buffer	= addr;
+
+	ecard_call(&req);
+}
+
+int ecard_readchunk(struct in_chunk_dir *cd, ecard_t *ec, int id, int num)
+{
+	struct ex_chunk_dir excd;
+	int index = 16;
+	int useld = 0;
+
+	if (!ec->cid.cd)
+		return 0;
+
+	while(1) {
+		ecard_readbytes(&excd, ec, index, 8, useld);
+		index += 8;
+		if (c_id(&excd) == 0) {
+			if (!useld && ec->loader) {
+				useld = 1;
+				index = 0;
+				continue;
+			}
+			return 0;
+		}
+		if (c_id(&excd) == 0xf0) { /* link */
+			index = c_start(&excd);
+			continue;
+		}
+		if (c_id(&excd) == 0x80) { /* loader */
+			if (!ec->loader) {
+				ec->loader = (loader_t)kmalloc(c_len(&excd),
+							       GFP_KERNEL);
+				if (ec->loader)
+					ecard_readbytes(ec->loader, ec,
+							(int)c_start(&excd),
+							c_len(&excd), useld);
+				else
+					return 0;
+			}
+			continue;
+		}
+		if (c_id(&excd) == id && num-- == 0)
+			break;
+	}
+
+	if (c_id(&excd) & 0x80) {
+		switch (c_id(&excd) & 0x70) {
+		case 0x70:
+			ecard_readbytes((unsigned char *)excd.d.string, ec,
+					(int)c_start(&excd), c_len(&excd),
+					useld);
+			break;
+		case 0x00:
+			break;
+		}
+	}
+	cd->start_offset = c_start(&excd);
+	memcpy(cd->d.string, excd.d.string, 256);
+	return 1;
+}
+
+/* ======================= Interrupt control ============================ */
+
+static void ecard_def_irq_enable(ecard_t *ec, int irqnr)
+{
+#ifdef HAS_EXPMASK
+	if (irqnr < 4 && have_expmask) {
+		have_expmask |= 1 << irqnr;
+		__raw_writeb(have_expmask, EXPMASK_ENABLE);
+	}
+#endif
+}
+
+static void ecard_def_irq_disable(ecard_t *ec, int irqnr)
+{
+#ifdef HAS_EXPMASK
+	if (irqnr < 4 && have_expmask) {
+		have_expmask &= ~(1 << irqnr);
+		__raw_writeb(have_expmask, EXPMASK_ENABLE);
+	}
+#endif
+}
+
+static int ecard_def_irq_pending(ecard_t *ec)
+{
+	return !ec->irqmask || readb(ec->irqaddr) & ec->irqmask;
+}
+
+static void ecard_def_fiq_enable(ecard_t *ec, int fiqnr)
+{
+	panic("ecard_def_fiq_enable called - impossible");
+}
+
+static void ecard_def_fiq_disable(ecard_t *ec, int fiqnr)
+{
+	panic("ecard_def_fiq_disable called - impossible");
+}
+
+static int ecard_def_fiq_pending(ecard_t *ec)
+{
+	return !ec->fiqmask || readb(ec->fiqaddr) & ec->fiqmask;
+}
+
+static expansioncard_ops_t ecard_default_ops = {
+	ecard_def_irq_enable,
+	ecard_def_irq_disable,
+	ecard_def_irq_pending,
+	ecard_def_fiq_enable,
+	ecard_def_fiq_disable,
+	ecard_def_fiq_pending
+};
+
+/*
+ * Enable and disable interrupts from expansion cards.
+ * (interrupts are disabled for these functions).
+ *
+ * They are not meant to be called directly, but via enable/disable_irq.
+ */
+static void ecard_irq_unmask(unsigned int irqnr)
+{
+	ecard_t *ec = slot_to_ecard(irqnr - 32);
+
+	if (ec) {
+		if (!ec->ops)
+			ec->ops = &ecard_default_ops;
+
+		if (ec->claimed && ec->ops->irqenable)
+			ec->ops->irqenable(ec, irqnr);
+		else
+			printk(KERN_ERR "ecard: rejecting request to "
+				"enable IRQs for %d\n", irqnr);
+	}
+}
+
+static void ecard_irq_mask(unsigned int irqnr)
+{
+	ecard_t *ec = slot_to_ecard(irqnr - 32);
+
+	if (ec) {
+		if (!ec->ops)
+			ec->ops = &ecard_default_ops;
+
+		if (ec->ops && ec->ops->irqdisable)
+			ec->ops->irqdisable(ec, irqnr);
+	}
+}
+
+static struct irqchip ecard_chip = {
+	.ack	= ecard_irq_mask,
+	.mask	= ecard_irq_mask,
+	.unmask = ecard_irq_unmask,
+};
+
+void ecard_enablefiq(unsigned int fiqnr)
+{
+	ecard_t *ec = slot_to_ecard(fiqnr);
+
+	if (ec) {
+		if (!ec->ops)
+			ec->ops = &ecard_default_ops;
+
+		if (ec->claimed && ec->ops->fiqenable)
+			ec->ops->fiqenable(ec, fiqnr);
+		else
+			printk(KERN_ERR "ecard: rejecting request to "
+				"enable FIQs for %d\n", fiqnr);
+	}
+}
+
+void ecard_disablefiq(unsigned int fiqnr)
+{
+	ecard_t *ec = slot_to_ecard(fiqnr);
+
+	if (ec) {
+		if (!ec->ops)
+			ec->ops = &ecard_default_ops;
+
+		if (ec->ops->fiqdisable)
+			ec->ops->fiqdisable(ec, fiqnr);
+	}
+}
+
+static void ecard_dump_irq_state(void)
+{
+	ecard_t *ec;
+
+	printk("Expansion card IRQ state:\n");
+
+	for (ec = cards; ec; ec = ec->next) {
+		if (ec->slot_no == 8)
+			continue;
+
+		printk("  %d: %sclaimed, ",
+		       ec->slot_no, ec->claimed ? "" : "not ");
+
+		if (ec->ops && ec->ops->irqpending &&
+		    ec->ops != &ecard_default_ops)
+			printk("irq %spending\n",
+			       ec->ops->irqpending(ec) ? "" : "not ");
+		else
+			printk("irqaddr %p, mask = %02X, status = %02X\n",
+			       ec->irqaddr, ec->irqmask, readb(ec->irqaddr));
+	}
+}
+
+static void ecard_check_lockup(struct irqdesc *desc)
+{
+	static unsigned long last;
+	static int lockup;
+
+	/*
+	 * If the timer interrupt has not run since the last million
+	 * unrecognised expansion card interrupts, then there is
+	 * something seriously wrong.  Disable the expansion card
+	 * interrupts so at least we can continue.
+	 *
+	 * Maybe we ought to start a timer to re-enable them some time
+	 * later?
+	 */
+	if (last == jiffies) {
+		lockup += 1;
+		if (lockup > 1000000) {
+			printk(KERN_ERR "\nInterrupt lockup detected - "
+			       "disabling all expansion card interrupts\n");
+
+			desc->chip->mask(IRQ_EXPANSIONCARD);
+			ecard_dump_irq_state();
+		}
+	} else
+		lockup = 0;
+
+	/*
+	 * If we did not recognise the source of this interrupt,
+	 * warn the user, but don't flood the user with these messages.
+	 */
+	if (!last || time_after(jiffies, last + 5*HZ)) {
+		last = jiffies;
+		printk(KERN_WARNING "Unrecognised interrupt from backplane\n");
+		ecard_dump_irq_state();
+	}
+}
+
+static void
+ecard_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	ecard_t *ec;
+	int called = 0;
+
+	desc->chip->mask(irq);
+	for (ec = cards; ec; ec = ec->next) {
+		int pending;
+
+		if (!ec->claimed || ec->irq == NO_IRQ || ec->slot_no == 8)
+			continue;
+
+		if (ec->ops && ec->ops->irqpending)
+			pending = ec->ops->irqpending(ec);
+		else
+			pending = ecard_default_ops.irqpending(ec);
+
+		if (pending) {
+			struct irqdesc *d = irq_desc + ec->irq;
+			d->handle(ec->irq, d, regs);
+			called ++;
+		}
+	}
+	desc->chip->unmask(irq);
+
+	if (called == 0)
+		ecard_check_lockup(desc);
+}
+
+#ifdef HAS_EXPMASK
+static unsigned char priority_masks[] =
+{
+	0xf0, 0xf1, 0xf3, 0xf7, 0xff, 0xff, 0xff, 0xff
+};
+
+static unsigned char first_set[] =
+{
+	0x00, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00,
+	0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00
+};
+
+static void
+ecard_irqexp_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	const unsigned int statusmask = 15;
+	unsigned int status;
+
+	status = __raw_readb(EXPMASK_STATUS) & statusmask;
+	if (status) {
+		unsigned int slot = first_set[status];
+		ecard_t *ec = slot_to_ecard(slot);
+
+		if (ec->claimed) {
+			struct irqdesc *d = irqdesc + ec->irq;
+			/*
+			 * this ugly code is so that we can operate a
+			 * prioritorising system:
+			 *
+			 * Card 0 	highest priority
+			 * Card 1
+			 * Card 2
+			 * Card 3	lowest priority
+			 *
+			 * Serial cards should go in 0/1, ethernet/scsi in 2/3
+			 * otherwise you will lose serial data at high speeds!
+			 */
+			d->handle(ec->irq, d, regs);
+		} else {
+			printk(KERN_WARNING "card%d: interrupt from unclaimed "
+			       "card???\n", slot);
+			have_expmask &= ~(1 << slot);
+			__raw_writeb(have_expmask, EXPMASK_ENABLE);
+		}
+	} else
+		printk(KERN_WARNING "Wild interrupt from backplane (masks)\n");
+}
+
+static int __init ecard_probeirqhw(void)
+{
+	ecard_t *ec;
+	int found;
+
+	__raw_writeb(0x00, EXPMASK_ENABLE);
+	__raw_writeb(0xff, EXPMASK_STATUS);
+	found = (__raw_readb(EXPMASK_STATUS) & 15) == 0;
+	__raw_writeb(0xff, EXPMASK_ENABLE);
+
+	if (found) {
+		printk(KERN_DEBUG "Expansion card interrupt "
+		       "management hardware found\n");
+
+		/* for each card present, set a bit to '1' */
+		have_expmask = 0x80000000;
+
+		for (ec = cards; ec; ec = ec->next)
+			have_expmask |= 1 << ec->slot_no;
+
+		__raw_writeb(have_expmask, EXPMASK_ENABLE);
+	}
+
+	return found;
+}
+#else
+#define ecard_irqexp_handler NULL
+#define ecard_probeirqhw() (0)
+#endif
+
+#ifndef IO_EC_MEMC8_BASE
+#define IO_EC_MEMC8_BASE 0
+#endif
+
+unsigned int __ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed)
+{
+	unsigned long address = 0;
+	int slot = ec->slot_no;
+
+	if (ec->slot_no == 8)
+		return IO_EC_MEMC8_BASE;
+
+	ectcr &= ~(1 << slot);
+
+	switch (type) {
+	case ECARD_MEMC:
+		if (slot < 4)
+			address = IO_EC_MEMC_BASE + (slot << 12);
+		break;
+
+	case ECARD_IOC:
+		if (slot < 4)
+			address = IO_EC_IOC_BASE + (slot << 12);
+#ifdef IO_EC_IOC4_BASE
+		else
+			address = IO_EC_IOC4_BASE + ((slot - 4) << 12);
+#endif
+		if (address)
+			address +=  speed << 17;
+		break;
+
+#ifdef IO_EC_EASI_BASE
+	case ECARD_EASI:
+		address = IO_EC_EASI_BASE + (slot << 22);
+		if (speed == ECARD_FAST)
+			ectcr |= 1 << slot;
+		break;
+#endif
+	default:
+		break;
+	}
+
+#ifdef IOMD_ECTCR
+	iomd_writeb(ectcr, IOMD_ECTCR);
+#endif
+	return address;
+}
+
+static int ecard_prints(char *buffer, ecard_t *ec)
+{
+	char *start = buffer;
+
+	buffer += sprintf(buffer, "  %d: %s ", ec->slot_no,
+			  ec->type == ECARD_EASI ? "EASI" : "    ");
+
+	if (ec->cid.id == 0) {
+		struct in_chunk_dir incd;
+
+		buffer += sprintf(buffer, "[%04X:%04X] ",
+			ec->cid.manufacturer, ec->cid.product);
+
+		if (!ec->card_desc && ec->cid.cd &&
+		    ecard_readchunk(&incd, ec, 0xf5, 0)) {
+			ec->card_desc = kmalloc(strlen(incd.d.string)+1, GFP_KERNEL);
+
+			if (ec->card_desc)
+				strcpy((char *)ec->card_desc, incd.d.string);
+		}
+
+		buffer += sprintf(buffer, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
+	} else
+		buffer += sprintf(buffer, "Simple card %d\n", ec->cid.id);
+
+	return buffer - start;
+}
+
+static int get_ecard_dev_info(char *buf, char **start, off_t pos, int count)
+{
+	ecard_t *ec = cards;
+	off_t at = 0;
+	int len, cnt;
+
+	cnt = 0;
+	while (ec && count > cnt) {
+		len = ecard_prints(buf, ec);
+		at += len;
+		if (at >= pos) {
+			if (!*start) {
+				*start = buf + (pos - (at - len));
+				cnt = at - pos;
+			} else
+				cnt += len;
+			buf += len;
+		}
+		ec = ec->next;
+	}
+	return (count > cnt) ? cnt : count;
+}
+
+static struct proc_dir_entry *proc_bus_ecard_dir = NULL;
+
+static void ecard_proc_init(void)
+{
+	proc_bus_ecard_dir = proc_mkdir("ecard", proc_bus);
+	create_proc_info_entry("devices", 0, proc_bus_ecard_dir,
+		get_ecard_dev_info);
+}
+
+#define ec_set_resource(ec,nr,st,sz)				\
+	do {							\
+		(ec)->resource[nr].name = ec->dev.bus_id;	\
+		(ec)->resource[nr].start = st;			\
+		(ec)->resource[nr].end = (st) + (sz) - 1;	\
+		(ec)->resource[nr].flags = IORESOURCE_MEM;	\
+	} while (0)
+
+static void __init ecard_free_card(struct expansion_card *ec)
+{
+	int i;
+
+	for (i = 0; i < ECARD_NUM_RESOURCES; i++)
+		if (ec->resource[i].flags)
+			release_resource(&ec->resource[i]);
+
+	kfree(ec);
+}
+
+static struct expansion_card *__init ecard_alloc_card(int type, int slot)
+{
+	struct expansion_card *ec;
+	unsigned long base;
+	int i;
+
+	ec = kmalloc(sizeof(ecard_t), GFP_KERNEL);
+	if (!ec) {
+		ec = ERR_PTR(-ENOMEM);
+		goto nomem;
+	}
+
+	memset(ec, 0, sizeof(ecard_t));
+
+	ec->slot_no = slot;
+	ec->type = type;
+	ec->irq = NO_IRQ;
+	ec->fiq = NO_IRQ;
+	ec->dma = NO_DMA;
+	ec->ops = &ecard_default_ops;
+
+	snprintf(ec->dev.bus_id, sizeof(ec->dev.bus_id), "ecard%d", slot);
+	ec->dev.parent = NULL;
+	ec->dev.bus = &ecard_bus_type;
+	ec->dev.dma_mask = &ec->dma_mask;
+	ec->dma_mask = (u64)0xffffffff;
+
+	if (slot < 4) {
+		ec_set_resource(ec, ECARD_RES_MEMC,
+				PODSLOT_MEMC_BASE + (slot << 14),
+				PODSLOT_MEMC_SIZE);
+		base = PODSLOT_IOC0_BASE + (slot << 14);
+	} else
+		base = PODSLOT_IOC4_BASE + ((slot - 4) << 14);
+
+#ifdef CONFIG_ARCH_RPC
+	if (slot < 8) {
+		ec_set_resource(ec, ECARD_RES_EASI,
+				PODSLOT_EASI_BASE + (slot << 24),
+				PODSLOT_EASI_SIZE);
+	}
+
+	if (slot == 8) {
+		ec_set_resource(ec, ECARD_RES_MEMC, NETSLOT_BASE, NETSLOT_SIZE);
+	} else
+#endif
+
+	for (i = 0; i <= ECARD_RES_IOCSYNC - ECARD_RES_IOCSLOW; i++)
+		ec_set_resource(ec, i + ECARD_RES_IOCSLOW,
+				base + (i << 19), PODSLOT_IOC_SIZE);
+
+	for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
+		if (ec->resource[i].flags &&
+		    request_resource(&iomem_resource, &ec->resource[i])) {
+			printk(KERN_ERR "%s: resource(s) not available\n",
+				ec->dev.bus_id);
+			ec->resource[i].end -= ec->resource[i].start;
+			ec->resource[i].start = 0;
+			ec->resource[i].flags = 0;
+		}
+	}
+
+ nomem:
+	return ec;
+}
+
+static ssize_t ecard_show_irq(struct device *dev, char *buf)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	return sprintf(buf, "%u\n", ec->irq);
+}
+
+static ssize_t ecard_show_dma(struct device *dev, char *buf)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	return sprintf(buf, "%u\n", ec->dma);
+}
+
+static ssize_t ecard_show_resources(struct device *dev, char *buf)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	char *str = buf;
+	int i;
+
+	for (i = 0; i < ECARD_NUM_RESOURCES; i++)
+		str += sprintf(str, "%08lx %08lx %08lx\n",
+				ec->resource[i].start,
+				ec->resource[i].end,
+				ec->resource[i].flags);
+
+	return str - buf;
+}
+
+static ssize_t ecard_show_vendor(struct device *dev, char *buf)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	return sprintf(buf, "%u\n", ec->cid.manufacturer);
+}
+
+static ssize_t ecard_show_device(struct device *dev, char *buf)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	return sprintf(buf, "%u\n", ec->cid.product);
+}
+
+static ssize_t ecard_show_type(struct device *dev, char *buf)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	return sprintf(buf, "%s\n", ec->type == ECARD_EASI ? "EASI" : "IOC");
+}
+
+static struct device_attribute ecard_dev_attrs[] = {
+	__ATTR(device,   S_IRUGO, ecard_show_device,    NULL),
+	__ATTR(dma,      S_IRUGO, ecard_show_dma,       NULL),
+	__ATTR(irq,      S_IRUGO, ecard_show_irq,       NULL),
+	__ATTR(resource, S_IRUGO, ecard_show_resources, NULL),
+	__ATTR(type,     S_IRUGO, ecard_show_type,      NULL),
+	__ATTR(vendor,   S_IRUGO, ecard_show_vendor,    NULL),
+	__ATTR_NULL,
+};
+
+
+int ecard_request_resources(struct expansion_card *ec)
+{
+	int i, err = 0;
+
+	for (i = 0; i < ECARD_NUM_RESOURCES; i++) {
+		if (ecard_resource_end(ec, i) &&
+		    !request_mem_region(ecard_resource_start(ec, i),
+					ecard_resource_len(ec, i),
+					ec->dev.driver->name)) {
+			err = -EBUSY;
+			break;
+		}
+	}
+
+	if (err) {
+		while (i--)
+			if (ecard_resource_end(ec, i))
+				release_mem_region(ecard_resource_start(ec, i),
+						   ecard_resource_len(ec, i));
+	}
+	return err;
+}
+EXPORT_SYMBOL(ecard_request_resources);
+
+void ecard_release_resources(struct expansion_card *ec)
+{
+	int i;
+
+	for (i = 0; i < ECARD_NUM_RESOURCES; i++)
+		if (ecard_resource_end(ec, i))
+			release_mem_region(ecard_resource_start(ec, i),
+					   ecard_resource_len(ec, i));
+}
+EXPORT_SYMBOL(ecard_release_resources);
+
+/*
+ * Probe for an expansion card.
+ *
+ * If bit 1 of the first byte of the card is set, then the
+ * card does not exist.
+ */
+static int __init
+ecard_probe(int slot, card_type_t type)
+{
+	ecard_t **ecp;
+	ecard_t *ec;
+	struct ex_ecid cid;
+	int i, rc;
+
+	ec = ecard_alloc_card(type, slot);
+	if (IS_ERR(ec)) {
+		rc = PTR_ERR(ec);
+		goto nomem;
+	}
+
+	rc = -ENODEV;
+	if ((ec->podaddr = ecard_address(ec, type, ECARD_SYNC)) == 0)
+		goto nodev;
+
+	cid.r_zero = 1;
+	ecard_readbytes(&cid, ec, 0, 16, 0);
+	if (cid.r_zero)
+		goto nodev;
+
+	ec->cid.id	= cid.r_id;
+	ec->cid.cd	= cid.r_cd;
+	ec->cid.is	= cid.r_is;
+	ec->cid.w	= cid.r_w;
+	ec->cid.manufacturer = ecard_getu16(cid.r_manu);
+	ec->cid.product = ecard_getu16(cid.r_prod);
+	ec->cid.country = cid.r_country;
+	ec->cid.irqmask = cid.r_irqmask;
+	ec->cid.irqoff  = ecard_gets24(cid.r_irqoff);
+	ec->cid.fiqmask = cid.r_fiqmask;
+	ec->cid.fiqoff  = ecard_gets24(cid.r_fiqoff);
+	ec->fiqaddr	=
+	ec->irqaddr	= (void __iomem *)ioaddr(ec->podaddr);
+
+	if (ec->cid.is) {
+		ec->irqmask = ec->cid.irqmask;
+		ec->irqaddr += ec->cid.irqoff;
+		ec->fiqmask = ec->cid.fiqmask;
+		ec->fiqaddr += ec->cid.fiqoff;
+	} else {
+		ec->irqmask = 1;
+		ec->fiqmask = 4;
+	}
+
+	for (i = 0; i < sizeof(blacklist) / sizeof(*blacklist); i++)
+		if (blacklist[i].manufacturer == ec->cid.manufacturer &&
+		    blacklist[i].product == ec->cid.product) {
+			ec->card_desc = blacklist[i].type;
+			break;
+		}
+
+	/*
+	 * hook the interrupt handlers
+	 */
+	if (slot < 8) {
+		ec->irq = 32 + slot;
+		set_irq_chip(ec->irq, &ecard_chip);
+		set_irq_handler(ec->irq, do_level_IRQ);
+		set_irq_flags(ec->irq, IRQF_VALID);
+	}
+
+#ifdef IO_EC_MEMC8_BASE
+	if (slot == 8)
+		ec->irq = 11;
+#endif
+#ifdef CONFIG_ARCH_RPC
+	/* On RiscPC, only first two slots have DMA capability */
+	if (slot < 2)
+		ec->dma = 2 + slot;
+#endif
+
+	for (ecp = &cards; *ecp; ecp = &(*ecp)->next);
+
+	*ecp = ec;
+	slot_to_expcard[slot] = ec;
+
+	device_register(&ec->dev);
+
+	return 0;
+
+ nodev:
+	ecard_free_card(ec);
+ nomem:
+	return rc;
+}
+
+/*
+ * Initialise the expansion card system.
+ * Locate all hardware - interrupt management and
+ * actual cards.
+ */
+static int __init ecard_init(void)
+{
+	int slot, irqhw, ret;
+
+	ret = kernel_thread(ecard_task, NULL, CLONE_KERNEL);
+	if (ret < 0) {
+		printk(KERN_ERR "Ecard: unable to create kernel thread: %d\n",
+		       ret);
+		return ret;
+	}
+
+	printk("Probing expansion cards\n");
+
+	for (slot = 0; slot < 8; slot ++) {
+		if (ecard_probe(slot, ECARD_EASI) == -ENODEV)
+			ecard_probe(slot, ECARD_IOC);
+	}
+
+#ifdef IO_EC_MEMC8_BASE
+	ecard_probe(8, ECARD_IOC);
+#endif
+
+	irqhw = ecard_probeirqhw();
+
+	set_irq_chained_handler(IRQ_EXPANSIONCARD,
+				irqhw ? ecard_irqexp_handler : ecard_irq_handler);
+
+	ecard_proc_init();
+
+	return 0;
+}
+
+subsys_initcall(ecard_init);
+
+/*
+ *	ECARD "bus"
+ */
+static const struct ecard_id *
+ecard_match_device(const struct ecard_id *ids, struct expansion_card *ec)
+{
+	int i;
+
+	for (i = 0; ids[i].manufacturer != 65535; i++)
+		if (ec->cid.manufacturer == ids[i].manufacturer &&
+		    ec->cid.product == ids[i].product)
+			return ids + i;
+
+	return NULL;
+}
+
+static int ecard_drv_probe(struct device *dev)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	struct ecard_driver *drv = ECARD_DRV(dev->driver);
+	const struct ecard_id *id;
+	int ret;
+
+	id = ecard_match_device(drv->id_table, ec);
+
+	ecard_claim(ec);
+	ret = drv->probe(ec, id);
+	if (ret)
+		ecard_release(ec);
+	return ret;
+}
+
+static int ecard_drv_remove(struct device *dev)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	struct ecard_driver *drv = ECARD_DRV(dev->driver);
+
+	drv->remove(ec);
+	ecard_release(ec);
+
+	return 0;
+}
+
+/*
+ * Before rebooting, we must make sure that the expansion card is in a
+ * sensible state, so it can be re-detected.  This means that the first
+ * page of the ROM must be visible.  We call the expansion cards reset
+ * handler, if any.
+ */
+static void ecard_drv_shutdown(struct device *dev)
+{
+	struct expansion_card *ec = ECARD_DEV(dev);
+	struct ecard_driver *drv = ECARD_DRV(dev->driver);
+	struct ecard_request req;
+
+	if (drv->shutdown)
+		drv->shutdown(ec);
+	ecard_release(ec);
+
+	/*
+	 * If this card has a loader, call the reset handler.
+	 */
+	if (ec->loader) {
+		req.fn = ecard_task_reset;
+		req.ec = ec;
+		ecard_call(&req);
+	}
+}
+
+int ecard_register_driver(struct ecard_driver *drv)
+{
+	drv->drv.bus = &ecard_bus_type;
+	drv->drv.probe = ecard_drv_probe;
+	drv->drv.remove = ecard_drv_remove;
+	drv->drv.shutdown = ecard_drv_shutdown;
+
+	return driver_register(&drv->drv);
+}
+
+void ecard_remove_driver(struct ecard_driver *drv)
+{
+	driver_unregister(&drv->drv);
+}
+
+static int ecard_match(struct device *_dev, struct device_driver *_drv)
+{
+	struct expansion_card *ec = ECARD_DEV(_dev);
+	struct ecard_driver *drv = ECARD_DRV(_drv);
+	int ret;
+
+	if (drv->id_table) {
+		ret = ecard_match_device(drv->id_table, ec) != NULL;
+	} else {
+		ret = ec->cid.id == drv->id;
+	}
+
+	return ret;
+}
+
+struct bus_type ecard_bus_type = {
+	.name		= "ecard",
+	.dev_attrs	= ecard_dev_attrs,
+	.match		= ecard_match,
+};
+
+static int ecard_bus_init(void)
+{
+	return bus_register(&ecard_bus_type);
+}
+
+postcore_initcall(ecard_bus_init);
+
+EXPORT_SYMBOL(ecard_readchunk);
+EXPORT_SYMBOL(__ecard_address);
+EXPORT_SYMBOL(ecard_register_driver);
+EXPORT_SYMBOL(ecard_remove_driver);
+EXPORT_SYMBOL(ecard_bus_type);
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
new file mode 100644
index 000000000000..bb27c317d94b
--- /dev/null
+++ b/arch/arm/kernel/entry-armv.S
@@ -0,0 +1,745 @@
+/*
+ *  linux/arch/arm/kernel/entry-armv.S
+ *
+ *  Copyright (C) 1996,1997,1998 Russell King.
+ *  ARM700 fix by Matthew Godbolt (linux-user@willothewisp.demon.co.uk)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Low-level vector interface routines
+ *
+ *  Note:  there is a StrongARM bug in the STMIA rn, {regs}^ instruction that causes
+ *  it to save wrong values...  Be aware!
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+
+#include <asm/thread_info.h>
+#include <asm/glue.h>
+#include <asm/ptrace.h>
+#include <asm/vfpmacros.h>
+
+#include "entry-header.S"
+
+/*
+ * Invalid mode handlers
+ */
+	.macro	inv_entry, sym, reason
+	sub	sp, sp, #S_FRAME_SIZE		@ Allocate frame size in one go
+	stmia	sp, {r0 - lr}			@ Save XXX r0 - lr
+	ldr	r4, .LC\sym
+	mov	r1, #\reason
+	.endm
+
+__pabt_invalid:
+	inv_entry abt, BAD_PREFETCH
+	b	1f
+
+__dabt_invalid:
+	inv_entry abt, BAD_DATA
+	b	1f
+
+__irq_invalid:
+	inv_entry irq, BAD_IRQ
+	b	1f
+
+__und_invalid:
+	inv_entry und, BAD_UNDEFINSTR
+
+1:	zero_fp
+	ldmia	r4, {r5 - r7}			@ Get XXX pc, cpsr, old_r0
+	add	r4, sp, #S_PC
+	stmia	r4, {r5 - r7}			@ Save XXX pc, cpsr, old_r0
+	mov	r0, sp
+	and	r2, r6, #31			@ int mode
+	b	bad_mode
+
+/*
+ * SVC mode handlers
+ */
+	.macro	svc_entry, sym
+	sub	sp, sp, #S_FRAME_SIZE
+	stmia	sp, {r0 - r12}			@ save r0 - r12
+	ldr	r2, .LC\sym
+	add	r0, sp, #S_FRAME_SIZE
+	ldmia	r2, {r2 - r4}			@ get pc, cpsr
+	add	r5, sp, #S_SP
+	mov	r1, lr
+
+	@
+	@ We are now ready to fill in the remaining blanks on the stack:
+	@
+	@  r0 - sp_svc
+	@  r1 - lr_svc
+	@  r2 - lr_<exception>, already fixed up for correct return/restart
+	@  r3 - spsr_<exception>
+	@  r4 - orig_r0 (see pt_regs definition in ptrace.h)
+	@
+	stmia	r5, {r0 - r4}
+	.endm
+
+	.align	5
+__dabt_svc:
+	svc_entry abt
+
+	@
+	@ get ready to re-enable interrupts if appropriate
+	@
+	mrs	r9, cpsr
+	tst	r3, #PSR_I_BIT
+	biceq	r9, r9, #PSR_I_BIT
+
+	@
+	@ Call the processor-specific abort handler:
+	@
+	@  r2 - aborted context pc
+	@  r3 - aborted context cpsr
+	@
+	@ The abort handler must return the aborted address in r0, and
+	@ the fault status register in r1.  r9 must be preserved.
+	@
+#ifdef MULTI_ABORT
+	ldr	r4, .LCprocfns
+	mov	lr, pc
+	ldr	pc, [r4]
+#else
+	bl	CPU_ABORT_HANDLER
+#endif
+
+	@
+	@ set desired IRQ state, then call main handler
+	@
+	msr	cpsr_c, r9
+	mov	r2, sp
+	bl	do_DataAbort
+
+	@
+	@ IRQs off again before pulling preserved data off the stack
+	@
+	disable_irq r0
+
+	@
+	@ restore SPSR and restart the instruction
+	@
+	ldr	r0, [sp, #S_PSR]
+	msr	spsr_cxsf, r0
+	ldmia	sp, {r0 - pc}^			@ load r0 - pc, cpsr
+
+	.align	5
+__irq_svc:
+	svc_entry irq
+#ifdef CONFIG_PREEMPT
+	get_thread_info r8
+	ldr	r9, [r8, #TI_PREEMPT]		@ get preempt count
+	add	r7, r9, #1			@ increment it
+	str	r7, [r8, #TI_PREEMPT]
+#endif
+1:	get_irqnr_and_base r0, r6, r5, lr
+	movne	r1, sp
+	@
+	@ routine called with r0 = irq number, r1 = struct pt_regs *
+	@
+	adrne	lr, 1b
+	bne	asm_do_IRQ
+#ifdef CONFIG_PREEMPT
+	ldr	r0, [r8, #TI_FLAGS]		@ get flags
+	tst	r0, #_TIF_NEED_RESCHED
+	blne	svc_preempt
+preempt_return:
+	ldr	r0, [r8, #TI_PREEMPT]		@ read preempt value
+	teq	r0, r7
+	str	r9, [r8, #TI_PREEMPT]		@ restore preempt count
+	strne	r0, [r0, -r0]			@ bug()
+#endif
+	ldr	r0, [sp, #S_PSR]		@ irqs are already disabled
+	msr	spsr_cxsf, r0
+	ldmia	sp, {r0 - pc}^			@ load r0 - pc, cpsr
+
+	.ltorg
+
+#ifdef CONFIG_PREEMPT
+svc_preempt:
+	teq	r9, #0				@ was preempt count = 0
+	ldreq	r6, .LCirq_stat
+	movne	pc, lr				@ no
+	ldr	r0, [r6, #4]			@ local_irq_count
+	ldr	r1, [r6, #8]			@ local_bh_count
+	adds	r0, r0, r1
+	movne	pc, lr
+	mov	r7, #0				@ preempt_schedule_irq
+	str	r7, [r8, #TI_PREEMPT]		@ expects preempt_count == 0
+1:	bl	preempt_schedule_irq		@ irq en/disable is done inside
+	ldr	r0, [r8, #TI_FLAGS]		@ get new tasks TI_FLAGS
+	tst	r0, #_TIF_NEED_RESCHED
+	beq	preempt_return			@ go again
+	b	1b
+#endif
+
+	.align	5
+__und_svc:
+	svc_entry und
+
+	@
+	@ call emulation code, which returns using r9 if it has emulated
+	@ the instruction, or the more conventional lr if we are to treat
+	@ this as a real undefined instruction
+	@
+	@  r0 - instruction
+	@
+	ldr	r0, [r2, #-4]
+	adr	r9, 1f
+	bl	call_fpe
+
+	mov	r0, sp				@ struct pt_regs *regs
+	bl	do_undefinstr
+
+	@
+	@ IRQs off again before pulling preserved data off the stack
+	@
+1:	disable_irq r0
+
+	@
+	@ restore SPSR and restart the instruction
+	@
+	ldr	lr, [sp, #S_PSR]		@ Get SVC cpsr
+	msr	spsr_cxsf, lr
+	ldmia	sp, {r0 - pc}^			@ Restore SVC registers
+
+	.align	5
+__pabt_svc:
+	svc_entry abt
+
+	@
+	@ re-enable interrupts if appropriate
+	@
+	mrs	r9, cpsr
+	tst	r3, #PSR_I_BIT
+	biceq	r9, r9, #PSR_I_BIT
+	msr	cpsr_c, r9
+
+	@
+	@ set args, then call main handler
+	@
+	@  r0 - address of faulting instruction
+	@  r1 - pointer to registers on stack
+	@
+	mov	r0, r2				@ address (pc)
+	mov	r1, sp				@ regs
+	bl	do_PrefetchAbort		@ call abort handler
+
+	@
+	@ IRQs off again before pulling preserved data off the stack
+	@
+	disable_irq r0
+
+	@
+	@ restore SPSR and restart the instruction
+	@
+	ldr	r0, [sp, #S_PSR]
+	msr	spsr_cxsf, r0
+	ldmia	sp, {r0 - pc}^			@ load r0 - pc, cpsr
+
+	.align	5
+.LCirq:
+	.word	__temp_irq
+.LCund:
+	.word	__temp_und
+.LCabt:
+	.word	__temp_abt
+#ifdef MULTI_ABORT
+.LCprocfns:
+	.word	processor
+#endif
+.LCfp:
+	.word	fp_enter
+#ifdef CONFIG_PREEMPT
+.LCirq_stat:
+	.word	irq_stat
+#endif
+
+/*
+ * User mode handlers
+ */
+	.macro	usr_entry, sym
+	sub	sp, sp, #S_FRAME_SIZE		@ Allocate frame size in one go
+	stmia	sp, {r0 - r12}			@ save r0 - r12
+	ldr	r7, .LC\sym
+	add	r5, sp, #S_PC
+	ldmia	r7, {r2 - r4}			@ Get USR pc, cpsr
+
+	@
+	@ We are now ready to fill in the remaining blanks on the stack:
+	@
+	@  r2 - lr_<exception>, already fixed up for correct return/restart
+	@  r3 - spsr_<exception>
+	@  r4 - orig_r0 (see pt_regs definition in ptrace.h)
+	@
+	@ Also, separately save sp_usr and lr_usr
+	@
+	stmia	r5, {r2 - r4}
+	stmdb	r5, {sp, lr}^
+
+	@
+	@ Enable the alignment trap while in kernel mode
+	@
+	alignment_trap r7, r0, __temp_\sym
+
+	@
+	@ Clear FP to mark the first stack frame
+	@
+	zero_fp
+	.endm
+
+	.align	5
+__dabt_usr:
+	usr_entry abt
+
+	@
+	@ Call the processor-specific abort handler:
+	@
+	@  r2 - aborted context pc
+	@  r3 - aborted context cpsr
+	@
+	@ The abort handler must return the aborted address in r0, and
+	@ the fault status register in r1.
+	@
+#ifdef MULTI_ABORT
+	ldr	r4, .LCprocfns
+	mov	lr, pc
+	ldr	pc, [r4]
+#else
+	bl	CPU_ABORT_HANDLER
+#endif
+
+	@
+	@ IRQs on, then call the main handler
+	@
+	enable_irq r2
+	mov	r2, sp
+	adr	lr, ret_from_exception
+	b	do_DataAbort
+
+	.align	5
+__irq_usr:
+	usr_entry irq
+
+#ifdef CONFIG_PREEMPT
+	get_thread_info r8
+	ldr	r9, [r8, #TI_PREEMPT]		@ get preempt count
+	add	r7, r9, #1			@ increment it
+	str	r7, [r8, #TI_PREEMPT]
+#endif
+1:	get_irqnr_and_base r0, r6, r5, lr
+	movne	r1, sp
+	adrne	lr, 1b
+	@
+	@ routine called with r0 = irq number, r1 = struct pt_regs *
+	@
+	bne	asm_do_IRQ
+#ifdef CONFIG_PREEMPT
+	ldr	r0, [r8, #TI_PREEMPT]
+	teq	r0, r7
+	str	r9, [r8, #TI_PREEMPT]
+	strne	r0, [r0, -r0]
+	mov	tsk, r8
+#else
+	get_thread_info tsk
+#endif
+	mov	why, #0
+	b	ret_to_user
+
+	.ltorg
+
+	.align	5
+__und_usr:
+	usr_entry und
+
+	tst	r3, #PSR_T_BIT			@ Thumb mode?
+	bne	fpundefinstr			@ ignore FP
+	sub	r4, r2, #4
+
+	@
+	@ fall through to the emulation code, which returns using r9 if
+	@ it has emulated the instruction, or the more conventional lr
+	@ if we are to treat this as a real undefined instruction
+	@
+	@  r0 - instruction
+	@
+1:	ldrt	r0, [r4]
+	adr	r9, ret_from_exception
+	adr	lr, fpundefinstr
+	@
+	@ fallthrough to call_fpe
+	@
+
+/*
+ * The out of line fixup for the ldrt above.
+ */
+	.section .fixup, "ax"
+2:	mov	pc, r9
+	.previous
+	.section __ex_table,"a"
+	.long	1b, 2b
+	.previous
+
+/*
+ * Check whether the instruction is a co-processor instruction.
+ * If yes, we need to call the relevant co-processor handler.
+ *
+ * Note that we don't do a full check here for the co-processor
+ * instructions; all instructions with bit 27 set are well
+ * defined.  The only instructions that should fault are the
+ * co-processor instructions.  However, we have to watch out
+ * for the ARM6/ARM7 SWI bug.
+ *
+ * Emulators may wish to make use of the following registers:
+ *  r0  = instruction opcode.
+ *  r2  = PC+4
+ *  r10 = this threads thread_info structure.
+ */
+call_fpe:
+	tst	r0, #0x08000000			@ only CDP/CPRT/LDC/STC have bit 27
+#if defined(CONFIG_CPU_ARM610) || defined(CONFIG_CPU_ARM710)
+	and	r8, r0, #0x0f000000		@ mask out op-code bits
+	teqne	r8, #0x0f000000			@ SWI (ARM6/7 bug)?
+#endif
+	moveq	pc, lr
+	get_thread_info r10			@ get current thread
+	and	r8, r0, #0x00000f00		@ mask out CP number
+	mov	r7, #1
+	add	r6, r10, #TI_USED_CP
+	strb	r7, [r6, r8, lsr #8]		@ set appropriate used_cp[]
+#ifdef CONFIG_IWMMXT
+	@ Test if we need to give access to iWMMXt coprocessors
+	ldr	r5, [r10, #TI_FLAGS]
+	rsbs	r7, r8, #(1 << 8)		@ CP 0 or 1 only
+	movcss	r7, r5, lsr #(TIF_USING_IWMMXT + 1)
+	bcs	iwmmxt_task_enable
+#endif
+	enable_irq r7
+	add	pc, pc, r8, lsr #6
+	mov	r0, r0
+
+	mov	pc, lr				@ CP#0
+	b	do_fpe				@ CP#1 (FPE)
+	b	do_fpe				@ CP#2 (FPE)
+	mov	pc, lr				@ CP#3
+	mov	pc, lr				@ CP#4
+	mov	pc, lr				@ CP#5
+	mov	pc, lr				@ CP#6
+	mov	pc, lr				@ CP#7
+	mov	pc, lr				@ CP#8
+	mov	pc, lr				@ CP#9
+#ifdef CONFIG_VFP
+	b	do_vfp				@ CP#10 (VFP)
+	b	do_vfp				@ CP#11 (VFP)
+#else
+	mov	pc, lr				@ CP#10 (VFP)
+	mov	pc, lr				@ CP#11 (VFP)
+#endif
+	mov	pc, lr				@ CP#12
+	mov	pc, lr				@ CP#13
+	mov	pc, lr				@ CP#14 (Debug)
+	mov	pc, lr				@ CP#15 (Control)
+
+do_fpe:
+	ldr	r4, .LCfp
+	add	r10, r10, #TI_FPSTATE		@ r10 = workspace
+	ldr	pc, [r4]			@ Call FP module USR entry point
+
+/*
+ * The FP module is called with these registers set:
+ *  r0  = instruction
+ *  r2  = PC+4
+ *  r9  = normal "successful" return address
+ *  r10 = FP workspace
+ *  lr  = unrecognised FP instruction return address
+ */
+
+	.data
+ENTRY(fp_enter)
+	.word	fpundefinstr
+	.text
+
+fpundefinstr:
+	mov	r0, sp
+	adr	lr, ret_from_exception
+	b	do_undefinstr
+
+	.align	5
+__pabt_usr:
+	usr_entry abt
+
+	enable_irq r0				@ Enable interrupts
+	mov	r0, r2				@ address (pc)
+	mov	r1, sp				@ regs
+	bl	do_PrefetchAbort		@ call abort handler
+	/* fall through */
+/*
+ * This is the return code to user mode for abort handlers
+ */
+ENTRY(ret_from_exception)
+	get_thread_info tsk
+	mov	why, #0
+	b	ret_to_user
+
+/*
+ * Register switch for ARMv3 and ARMv4 processors
+ * r0 = previous task_struct, r1 = previous thread_info, r2 = next thread_info
+ * previous and next are guaranteed not to be the same.
+ */
+ENTRY(__switch_to)
+	add	ip, r1, #TI_CPU_SAVE
+	ldr	r3, [r2, #TI_TP_VALUE]
+	stmia	ip!, {r4 - sl, fp, sp, lr}	@ Store most regs on stack
+	ldr	r6, [r2, #TI_CPU_DOMAIN]!
+#if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT)
+	mra	r4, r5, acc0
+	stmia   ip, {r4, r5}
+#endif
+	mov	r4, #0xffff0fff
+	str	r3, [r4, #-3]			@ Set TLS ptr
+	mcr	p15, 0, r6, c3, c0, 0		@ Set domain register
+#ifdef CONFIG_VFP
+	@ Always disable VFP so we can lazily save/restore the old
+	@ state. This occurs in the context of the previous thread.
+	VFPFMRX	r4, FPEXC
+	bic	r4, r4, #FPEXC_ENABLE
+	VFPFMXR	FPEXC, r4
+#endif
+#if defined(CONFIG_IWMMXT)
+	bl	iwmmxt_task_switch
+#elif defined(CONFIG_CPU_XSCALE)
+	add	r4, r2, #40			@ cpu_context_save->extra
+	ldmib	r4, {r4, r5}
+	mar	acc0, r4, r5
+#endif
+	ldmib	r2, {r4 - sl, fp, sp, pc}	@ Load all regs saved previously
+
+	__INIT
+/*
+ * Vector stubs.
+ *
+ * This code is copied to 0x200 or 0xffff0200 so we can use branches in the
+ * vectors, rather than ldr's.
+ *
+ * Common stub entry macro:
+ *   Enter in IRQ mode, spsr = SVC/USR CPSR, lr = SVC/USR PC
+ */
+	.macro	vector_stub, name, sym, correction=0
+	.align	5
+
+vector_\name:
+	ldr	r13, .LCs\sym
+	.if \correction
+	sub	lr, lr, #\correction
+	.endif
+	str	lr, [r13]			@ save lr_IRQ
+	mrs	lr, spsr
+	str	lr, [r13, #4]			@ save spsr_IRQ
+	@
+	@ now branch to the relevant MODE handling routine
+	@
+	mrs	r13, cpsr
+	bic	r13, r13, #MODE_MASK
+	orr	r13, r13, #MODE_SVC
+	msr	spsr_cxsf, r13			@ switch to SVC_32 mode
+
+	and	lr, lr, #15
+	ldr	lr, [pc, lr, lsl #2]
+	movs	pc, lr				@ Changes mode and branches
+	.endm
+
+__stubs_start:
+/*
+ * Interrupt dispatcher
+ */
+	vector_stub	irq, irq, 4
+
+	.long	__irq_usr			@  0  (USR_26 / USR_32)
+	.long	__irq_invalid			@  1  (FIQ_26 / FIQ_32)
+	.long	__irq_invalid			@  2  (IRQ_26 / IRQ_32)
+	.long	__irq_svc			@  3  (SVC_26 / SVC_32)
+	.long	__irq_invalid			@  4
+	.long	__irq_invalid			@  5
+	.long	__irq_invalid			@  6
+	.long	__irq_invalid			@  7
+	.long	__irq_invalid			@  8
+	.long	__irq_invalid			@  9
+	.long	__irq_invalid			@  a
+	.long	__irq_invalid			@  b
+	.long	__irq_invalid			@  c
+	.long	__irq_invalid			@  d
+	.long	__irq_invalid			@  e
+	.long	__irq_invalid			@  f
+
+/*
+ * Data abort dispatcher
+ * Enter in ABT mode, spsr = USR CPSR, lr = USR PC
+ */
+	vector_stub	dabt, abt, 8
+
+	.long	__dabt_usr			@  0  (USR_26 / USR_32)
+	.long	__dabt_invalid			@  1  (FIQ_26 / FIQ_32)
+	.long	__dabt_invalid			@  2  (IRQ_26 / IRQ_32)
+	.long	__dabt_svc			@  3  (SVC_26 / SVC_32)
+	.long	__dabt_invalid			@  4
+	.long	__dabt_invalid			@  5
+	.long	__dabt_invalid			@  6
+	.long	__dabt_invalid			@  7
+	.long	__dabt_invalid			@  8
+	.long	__dabt_invalid			@  9
+	.long	__dabt_invalid			@  a
+	.long	__dabt_invalid			@  b
+	.long	__dabt_invalid			@  c
+	.long	__dabt_invalid			@  d
+	.long	__dabt_invalid			@  e
+	.long	__dabt_invalid			@  f
+
+/*
+ * Prefetch abort dispatcher
+ * Enter in ABT mode, spsr = USR CPSR, lr = USR PC
+ */
+	vector_stub	pabt, abt, 4
+
+	.long	__pabt_usr			@  0 (USR_26 / USR_32)
+	.long	__pabt_invalid			@  1 (FIQ_26 / FIQ_32)
+	.long	__pabt_invalid			@  2 (IRQ_26 / IRQ_32)
+	.long	__pabt_svc			@  3 (SVC_26 / SVC_32)
+	.long	__pabt_invalid			@  4
+	.long	__pabt_invalid			@  5
+	.long	__pabt_invalid			@  6
+	.long	__pabt_invalid			@  7
+	.long	__pabt_invalid			@  8
+	.long	__pabt_invalid			@  9
+	.long	__pabt_invalid			@  a
+	.long	__pabt_invalid			@  b
+	.long	__pabt_invalid			@  c
+	.long	__pabt_invalid			@  d
+	.long	__pabt_invalid			@  e
+	.long	__pabt_invalid			@  f
+
+/*
+ * Undef instr entry dispatcher
+ * Enter in UND mode, spsr = SVC/USR CPSR, lr = SVC/USR PC
+ */
+	vector_stub	und, und
+
+	.long	__und_usr			@  0 (USR_26 / USR_32)
+	.long	__und_invalid			@  1 (FIQ_26 / FIQ_32)
+	.long	__und_invalid			@  2 (IRQ_26 / IRQ_32)
+	.long	__und_svc			@  3 (SVC_26 / SVC_32)
+	.long	__und_invalid			@  4
+	.long	__und_invalid			@  5
+	.long	__und_invalid			@  6
+	.long	__und_invalid			@  7
+	.long	__und_invalid			@  8
+	.long	__und_invalid			@  9
+	.long	__und_invalid			@  a
+	.long	__und_invalid			@  b
+	.long	__und_invalid			@  c
+	.long	__und_invalid			@  d
+	.long	__und_invalid			@  e
+	.long	__und_invalid			@  f
+
+	.align	5
+
+/*=============================================================================
+ * Undefined FIQs
+ *-----------------------------------------------------------------------------
+ * Enter in FIQ mode, spsr = ANY CPSR, lr = ANY PC
+ * MUST PRESERVE SVC SPSR, but need to switch to SVC mode to show our msg.
+ * Basically to switch modes, we *HAVE* to clobber one register...  brain
+ * damage alert!  I don't think that we can execute any code in here in any
+ * other mode than FIQ...  Ok you can switch to another mode, but you can't
+ * get out of that mode without clobbering one register.
+ */
+vector_fiq:
+	disable_fiq
+	subs	pc, lr, #4
+
+/*=============================================================================
+ * Address exception handler
+ *-----------------------------------------------------------------------------
+ * These aren't too critical.
+ * (they're not supposed to happen, and won't happen in 32-bit data mode).
+ */
+
+vector_addrexcptn:
+	b	vector_addrexcptn
+
+/*
+ * We group all the following data together to optimise
+ * for CPUs with separate I & D caches.
+ */
+	.align	5
+
+.LCvswi:
+	.word	vector_swi
+
+.LCsirq:
+	.word	__temp_irq
+.LCsund:
+	.word	__temp_und
+.LCsabt:
+	.word	__temp_abt
+
+__stubs_end:
+
+	.equ	__real_stubs_start, .LCvectors + 0x200
+
+.LCvectors:
+	swi	SYS_ERROR0
+	b	__real_stubs_start + (vector_und - __stubs_start)
+	ldr	pc, __real_stubs_start + (.LCvswi - __stubs_start)
+	b	__real_stubs_start + (vector_pabt - __stubs_start)
+	b	__real_stubs_start + (vector_dabt - __stubs_start)
+	b	__real_stubs_start + (vector_addrexcptn - __stubs_start)
+	b	__real_stubs_start + (vector_irq - __stubs_start)
+	b	__real_stubs_start + (vector_fiq - __stubs_start)
+
+ENTRY(__trap_init)
+	stmfd	sp!, {r4 - r6, lr}
+
+	mov	r0, #0xff000000
+	orr	r0, r0, #0x00ff0000		@ high vectors position
+	adr	r1, .LCvectors			@ set up the vectors
+	ldmia	r1, {r1, r2, r3, r4, r5, r6, ip, lr}
+	stmia	r0, {r1, r2, r3, r4, r5, r6, ip, lr}
+
+	add	r2, r0, #0x200
+	adr	r0, __stubs_start		@ copy stubs to 0x200
+	adr	r1, __stubs_end
+1:	ldr	r3, [r0], #4
+	str	r3, [r2], #4
+	cmp	r0, r1
+	blt	1b
+	LOADREGS(fd, sp!, {r4 - r6, pc})
+
+	.data
+
+/*
+ * Do not reorder these, and do not insert extra data between...
+ */
+
+__temp_irq:
+	.word	0				@ saved lr_irq
+	.word	0				@ saved spsr_irq
+	.word	-1				@ old_r0
+__temp_und:
+	.word	0				@ Saved lr_und
+	.word	0				@ Saved spsr_und
+	.word	-1				@ old_r0
+__temp_abt:
+	.word	0				@ Saved lr_abt
+	.word	0				@ Saved spsr_abt
+	.word	-1				@ old_r0
+
+	.globl	cr_alignment
+	.globl	cr_no_alignment
+cr_alignment:
+	.space	4
+cr_no_alignment:
+	.space	4
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
new file mode 100644
index 000000000000..53a7e0dea44d
--- /dev/null
+++ b/arch/arm/kernel/entry-common.S
@@ -0,0 +1,260 @@
+/*
+ *  linux/arch/arm/kernel/entry-common.S
+ *
+ *  Copyright (C) 2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+
+#include <asm/thread_info.h>
+#include <asm/ptrace.h>
+#include <asm/unistd.h>
+
+#include "entry-header.S"
+
+/* 
+ * We rely on the fact that R0 is at the bottom of the stack (due to
+ * slow/fast restore user regs).
+ */
+#if S_R0 != 0
+#error "Please fix"
+#endif
+
+	.align	5
+/*
+ * This is the fast syscall return path.  We do as little as
+ * possible here, and this includes saving r0 back into the SVC
+ * stack.
+ */
+ret_fast_syscall:
+	disable_irq r1				@ disable interrupts
+	ldr	r1, [tsk, #TI_FLAGS]
+	tst	r1, #_TIF_WORK_MASK
+	bne	fast_work_pending
+	fast_restore_user_regs
+
+/*
+ * Ok, we need to do extra processing, enter the slow path.
+ */
+fast_work_pending:
+	str	r0, [sp, #S_R0+S_OFF]!		@ returned r0
+work_pending:
+	tst	r1, #_TIF_NEED_RESCHED
+	bne	work_resched
+	tst	r1, #_TIF_NOTIFY_RESUME | _TIF_SIGPENDING
+	beq	no_work_pending
+	mov	r0, sp				@ 'regs'
+	mov	r2, why				@ 'syscall'
+	bl	do_notify_resume
+	disable_irq r1				@ disable interrupts
+	b	no_work_pending
+
+work_resched:
+	bl	schedule
+/*
+ * "slow" syscall return path.  "why" tells us if this was a real syscall.
+ */
+ENTRY(ret_to_user)
+ret_slow_syscall:
+	disable_irq r1				@ disable interrupts
+	ldr	r1, [tsk, #TI_FLAGS]
+	tst	r1, #_TIF_WORK_MASK
+	bne	work_pending
+no_work_pending:
+	slow_restore_user_regs
+
+/*
+ * This is how we return from a fork.
+ */
+ENTRY(ret_from_fork)
+	bl	schedule_tail
+	get_thread_info tsk
+	ldr	r1, [tsk, #TI_FLAGS]		@ check for syscall tracing
+	mov	why, #1
+	tst	r1, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
+	beq	ret_slow_syscall
+	mov	r1, sp
+	mov	r0, #1				@ trace exit [IP = 1]
+	bl	syscall_trace
+	b	ret_slow_syscall
+	
+
+#include "calls.S"
+
+/*=============================================================================
+ * SWI handler
+ *-----------------------------------------------------------------------------
+ */
+
+	/* If we're optimising for StrongARM the resulting code won't 
+	   run on an ARM7 and we can save a couple of instructions.  
+								--pb */
+#ifdef CONFIG_CPU_ARM710
+	.macro	arm710_bug_check, instr, temp
+	and	\temp, \instr, #0x0f000000	@ check for SWI
+	teq	\temp, #0x0f000000
+	bne	.Larm700bug
+	.endm
+
+.Larm700bug:
+	ldr	r0, [sp, #S_PSR]		@ Get calling cpsr
+	sub	lr, lr, #4
+	str	lr, [r8]
+	msr	spsr_cxsf, r0
+	ldmia	sp, {r0 - lr}^			@ Get calling r0 - lr
+	mov	r0, r0
+	ldr	lr, [sp, #S_PC]			@ Get PC
+	add	sp, sp, #S_FRAME_SIZE
+	movs	pc, lr
+#else
+	.macro	arm710_bug_check, instr, temp
+	.endm
+#endif
+
+	.align	5
+ENTRY(vector_swi)
+	save_user_regs
+	zero_fp
+	get_scno
+	arm710_bug_check scno, ip
+
+#ifdef CONFIG_ALIGNMENT_TRAP
+	ldr	ip, __cr_alignment
+	ldr	ip, [ip]
+	mcr	p15, 0, ip, c1, c0		@ update control register
+#endif
+	enable_irq ip
+
+	str	r4, [sp, #-S_OFF]!		@ push fifth arg
+
+	get_thread_info tsk
+	ldr	ip, [tsk, #TI_FLAGS]		@ check for syscall tracing
+	bic	scno, scno, #0xff000000		@ mask off SWI op-code
+	eor	scno, scno, #OS_NUMBER << 20	@ check OS number
+	adr	tbl, sys_call_table		@ load syscall table pointer
+	tst	ip, #_TIF_SYSCALL_TRACE		@ are we tracing syscalls?
+	bne	__sys_trace
+
+	adr	lr, ret_fast_syscall		@ return address
+	cmp	scno, #NR_syscalls		@ check upper syscall limit
+	ldrcc	pc, [tbl, scno, lsl #2]		@ call sys_* routine
+
+	add	r1, sp, #S_OFF
+2:	mov	why, #0				@ no longer a real syscall
+	cmp	scno, #ARMSWI_OFFSET
+	eor	r0, scno, #OS_NUMBER << 20	@ put OS number back
+	bcs	arm_syscall	
+	b	sys_ni_syscall			@ not private func
+
+	/*
+	 * This is the really slow path.  We're going to be doing
+	 * context switches, and waiting for our parent to respond.
+	 */
+__sys_trace:
+	add	r1, sp, #S_OFF
+	mov	r0, #0				@ trace entry [IP = 0]
+	bl	syscall_trace
+
+	adr	lr, __sys_trace_return		@ return address
+	add	r1, sp, #S_R0 + S_OFF		@ pointer to regs
+	cmp	scno, #NR_syscalls		@ check upper syscall limit
+	ldmccia	r1, {r0 - r3}			@ have to reload r0 - r3
+	ldrcc	pc, [tbl, scno, lsl #2]		@ call sys_* routine
+	b	2b
+
+__sys_trace_return:
+	str	r0, [sp, #S_R0 + S_OFF]!	@ save returned r0
+	mov	r1, sp
+	mov	r0, #1				@ trace exit [IP = 1]
+	bl	syscall_trace
+	b	ret_slow_syscall
+
+	.align	5
+#ifdef CONFIG_ALIGNMENT_TRAP
+	.type	__cr_alignment, #object
+__cr_alignment:
+	.word	cr_alignment
+#endif
+
+	.type	sys_call_table, #object
+ENTRY(sys_call_table)
+#include "calls.S"
+
+/*============================================================================
+ * Special system call wrappers
+ */
+@ r0 = syscall number
+@ r5 = syscall table
+		.type	sys_syscall, #function
+sys_syscall:
+		eor	scno, r0, #OS_NUMBER << 20
+		cmp	scno, #__NR_syscall - __NR_SYSCALL_BASE
+		cmpne	scno, #NR_syscalls	@ check range
+		stmloia	sp, {r5, r6}		@ shuffle args
+		movlo	r0, r1
+		movlo	r1, r2
+		movlo	r2, r3
+		movlo	r3, r4
+		ldrlo	pc, [tbl, scno, lsl #2]
+		b	sys_ni_syscall
+
+sys_fork_wrapper:
+		add	r0, sp, #S_OFF
+		b	sys_fork
+
+sys_vfork_wrapper:
+		add	r0, sp, #S_OFF
+		b	sys_vfork
+
+sys_execve_wrapper:
+		add	r3, sp, #S_OFF
+		b	sys_execve
+
+sys_clone_wrapper:
+		add	ip, sp, #S_OFF
+		str	ip, [sp, #4]
+		b	sys_clone
+
+sys_sigsuspend_wrapper:
+		add	r3, sp, #S_OFF
+		b	sys_sigsuspend
+
+sys_rt_sigsuspend_wrapper:
+		add	r2, sp, #S_OFF
+		b	sys_rt_sigsuspend
+
+sys_sigreturn_wrapper:
+		add	r0, sp, #S_OFF
+		b	sys_sigreturn
+
+sys_rt_sigreturn_wrapper:
+		add	r0, sp, #S_OFF
+		b	sys_rt_sigreturn
+
+sys_sigaltstack_wrapper:
+		ldr	r2, [sp, #S_OFF + S_SP]
+		b	do_sigaltstack
+
+sys_futex_wrapper:
+		str	r5, [sp, #4]		@ push sixth arg
+		b	sys_futex
+
+/*
+ * Note: off_4k (r5) is always units of 4K.  If we can't do the requested
+ * offset, we return EINVAL.
+ */
+sys_mmap2:
+#if PAGE_SHIFT > 12
+		tst	r5, #PGOFF_MASK
+		moveq	r5, r5, lsr #PAGE_SHIFT - 12
+		streq	r5, [sp, #4]
+		beq	do_mmap2
+		mov	r0, #-EINVAL
+		RETINSTR(mov,pc, lr)
+#else
+		str	r5, [sp, #4]
+		b	do_mmap2
+#endif
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
new file mode 100644
index 000000000000..4039d8c120b5
--- /dev/null
+++ b/arch/arm/kernel/entry-header.S
@@ -0,0 +1,182 @@
+#include <linux/config.h> /* for CONFIG_ARCH_xxxx */
+#include <linux/linkage.h>
+
+#include <asm/assembler.h>
+#include <asm/constants.h>
+#include <asm/errno.h>
+#include <asm/hardware.h>
+#include <asm/arch/irqs.h>
+#include <asm/arch/entry-macro.S>
+
+#ifndef MODE_SVC
+#define MODE_SVC 0x13
+#endif
+
+	.macro	zero_fp
+#ifdef CONFIG_FRAME_POINTER
+	mov	fp, #0
+#endif
+	.endm
+
+	.text
+
+@ Bad Abort numbers
+@ -----------------
+@
+#define BAD_PREFETCH	0
+#define BAD_DATA	1
+#define BAD_ADDREXCPTN	2
+#define BAD_IRQ		3
+#define BAD_UNDEFINSTR	4
+
+#define PT_TRACESYS	0x00000002
+
+@ OS version number used in SWIs
+@  RISC OS is 0
+@  RISC iX is 8
+@
+#define OS_NUMBER	9
+#define ARMSWI_OFFSET	0x000f0000
+
+@
+@ Stack format (ensured by USER_* and SVC_*)
+@
+#define S_FRAME_SIZE	72
+#define S_OLD_R0	68
+#define S_PSR		64
+
+#define S_PC		60
+#define S_LR		56
+#define S_SP		52
+#define S_IP		48
+#define S_FP		44
+#define S_R10		40
+#define S_R9		36
+#define S_R8		32
+#define S_R7		28
+#define S_R6		24
+#define S_R5		20
+#define S_R4		16
+#define S_R3		12
+#define S_R2		8
+#define S_R1		4
+#define S_R0		0
+#define S_OFF		8
+
+	.macro	set_cpsr_c, reg, mode
+	msr	cpsr_c, \mode
+	.endm
+
+#if __LINUX_ARM_ARCH__ >= 6
+	.macro	disable_irq, temp
+	cpsid	i
+	.endm
+
+	.macro	enable_irq, temp
+	cpsie	i
+	.endm
+#else
+	.macro	disable_irq, temp
+	set_cpsr_c \temp, #PSR_I_BIT | MODE_SVC
+	.endm
+
+	.macro	enable_irq, temp
+	set_cpsr_c \temp, #MODE_SVC
+	.endm
+#endif
+
+	.macro	save_user_regs
+	sub	sp, sp, #S_FRAME_SIZE
+	stmia	sp, {r0 - r12}			@ Calling r0 - r12
+	add	r8, sp, #S_PC
+	stmdb	r8, {sp, lr}^			@ Calling sp, lr
+	mrs	r8, spsr			@ called from non-FIQ mode, so ok.
+	str	lr, [sp, #S_PC]			@ Save calling PC
+	str	r8, [sp, #S_PSR]		@ Save CPSR
+	str	r0, [sp, #S_OLD_R0]		@ Save OLD_R0
+	.endm
+
+	.macro	restore_user_regs
+	ldr	r1, [sp, #S_PSR]		@ Get calling cpsr
+	disable_irq ip				@ disable IRQs
+	ldr	lr, [sp, #S_PC]!		@ Get PC
+	msr	spsr_cxsf, r1			@ save in spsr_svc
+	ldmdb	sp, {r0 - lr}^			@ Get calling r0 - lr
+	mov	r0, r0
+	add	sp, sp, #S_FRAME_SIZE - S_PC
+	movs	pc, lr				@ return & move spsr_svc into cpsr
+	.endm
+
+/*
+ * Must be called with IRQs already disabled.
+ */
+	.macro	fast_restore_user_regs
+	ldr	r1, [sp, #S_OFF + S_PSR]	@ get calling cpsr
+	ldr	lr, [sp, #S_OFF + S_PC]!	@ get pc
+	msr	spsr_cxsf, r1			@ save in spsr_svc
+	ldmdb	sp, {r1 - lr}^			@ get calling r1 - lr
+	mov	r0, r0
+	add	sp, sp, #S_FRAME_SIZE - S_PC
+	movs	pc, lr				@ return & move spsr_svc into cpsr
+	.endm
+
+/*
+ * Must be called with IRQs already disabled.
+ */
+	.macro	slow_restore_user_regs
+	ldr	r1, [sp, #S_PSR]		@ get calling cpsr
+	ldr	lr, [sp, #S_PC]!		@ get pc
+	msr	spsr_cxsf, r1			@ save in spsr_svc
+	ldmdb	sp, {r0 - lr}^			@ get calling r1 - lr
+	mov	r0, r0
+	add	sp, sp, #S_FRAME_SIZE - S_PC
+	movs	pc, lr				@ return & move spsr_svc into cpsr
+	.endm
+
+	.macro	mask_pc, rd, rm
+	.endm
+
+	.macro	get_thread_info, rd
+	mov	\rd, sp, lsr #13
+	mov	\rd, \rd, lsl #13
+	.endm
+
+	.macro	alignment_trap, rbase, rtemp, sym
+#ifdef CONFIG_ALIGNMENT_TRAP
+#define OFF_CR_ALIGNMENT(x)	cr_alignment - x
+
+	ldr	\rtemp, [\rbase, #OFF_CR_ALIGNMENT(\sym)]
+	mcr	p15, 0, \rtemp, c1, c0
+#endif
+	.endm
+
+
+/*
+ * These are the registers used in the syscall handler, and allow us to
+ * have in theory up to 7 arguments to a function - r0 to r6.
+ *
+ * r7 is reserved for the system call number for thumb mode.
+ *
+ * Note that tbl == why is intentional.
+ *
+ * We must set at least "tsk" and "why" when calling ret_with_reschedule.
+ */
+scno	.req	r7		@ syscall number
+tbl	.req	r8		@ syscall table pointer
+why	.req	r8		@ Linux syscall (!= 0)
+tsk	.req	r9		@ current thread_info
+
+/*
+ * Get the system call number.
+ */
+	.macro	get_scno
+#ifdef CONFIG_ARM_THUMB
+	tst	r8, #PSR_T_BIT		@ this is SPSR from save_user_regs
+	addne	scno, r7, #OS_NUMBER << 20 @ put OS number in
+	ldreq	scno, [lr, #-4]
+
+#else
+	mask_pc	lr, lr
+	ldr	scno, [lr, #-4]		@ get SWI instruction
+#endif
+	.endm
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
new file mode 100644
index 000000000000..9299dfc25698
--- /dev/null
+++ b/arch/arm/kernel/fiq.c
@@ -0,0 +1,181 @@
+/*
+ *  linux/arch/arm/kernel/fiq.c
+ *
+ *  Copyright (C) 1998 Russell King
+ *  Copyright (C) 1998, 1999 Phil Blundell
+ *
+ *  FIQ support written by Philip Blundell <philb@gnu.org>, 1998.
+ *
+ *  FIQ support re-written by Russell King to be more generic
+ *
+ * We now properly support a method by which the FIQ handlers can
+ * be stacked onto the vector.  We still do not support sharing
+ * the FIQ vector itself.
+ *
+ * Operation is as follows:
+ *  1. Owner A claims FIQ:
+ *     - default_fiq relinquishes control.
+ *  2. Owner A:
+ *     - inserts code.
+ *     - sets any registers,
+ *     - enables FIQ.
+ *  3. Owner B claims FIQ:
+ *     - if owner A has a relinquish function.
+ *       - disable FIQs.
+ *       - saves any registers.
+ *       - returns zero.
+ *  4. Owner B:
+ *     - inserts code.
+ *     - sets any registers,
+ *     - enables FIQ.
+ *  5. Owner B releases FIQ:
+ *     - Owner A is asked to reacquire FIQ:
+ *	 - inserts code.
+ *	 - restores saved registers.
+ *	 - enables FIQ.
+ *  6. Goto 3
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/seq_file.h>
+
+#include <asm/cacheflush.h>
+#include <asm/fiq.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+
+static unsigned long no_fiq_insn;
+
+/* Default reacquire function
+ * - we always relinquish FIQ control
+ * - we always reacquire FIQ control
+ */
+static int fiq_def_op(void *ref, int relinquish)
+{
+	if (!relinquish)
+		set_fiq_handler(&no_fiq_insn, sizeof(no_fiq_insn));
+
+	return 0;
+}
+
+static struct fiq_handler default_owner = {
+	.name	= "default",
+	.fiq_op = fiq_def_op,
+};
+
+static struct fiq_handler *current_fiq = &default_owner;
+
+int show_fiq_list(struct seq_file *p, void *v)
+{
+	if (current_fiq != &default_owner)
+		seq_printf(p, "FIQ:              %s\n", current_fiq->name);
+
+	return 0;
+}
+
+void set_fiq_handler(void *start, unsigned int length)
+{
+	memcpy((void *)0xffff001c, start, length);
+	flush_icache_range(0xffff001c, 0xffff001c + length);
+	if (!vectors_high())
+		flush_icache_range(0x1c, 0x1c + length);
+}
+
+/*
+ * Taking an interrupt in FIQ mode is death, so both these functions
+ * disable irqs for the duration.  Note - these functions are almost
+ * entirely coded in assembly.
+ */
+void __attribute__((naked)) set_fiq_regs(struct pt_regs *regs)
+{
+	register unsigned long tmp;
+	asm volatile (
+	"mov	ip, sp\n\
+	stmfd	sp!, {fp, ip, lr, pc}\n\
+	sub	fp, ip, #4\n\
+	mrs	%0, cpsr\n\
+	msr	cpsr_c, %2	@ select FIQ mode\n\
+	mov	r0, r0\n\
+	ldmia	%1, {r8 - r14}\n\
+	msr	cpsr_c, %0	@ return to SVC mode\n\
+	mov	r0, r0\n\
+	ldmea	fp, {fp, sp, pc}"
+	: "=&r" (tmp)
+	: "r" (&regs->ARM_r8), "I" (PSR_I_BIT | PSR_F_BIT | FIQ_MODE));
+}
+
+void __attribute__((naked)) get_fiq_regs(struct pt_regs *regs)
+{
+	register unsigned long tmp;
+	asm volatile (
+	"mov	ip, sp\n\
+	stmfd	sp!, {fp, ip, lr, pc}\n\
+	sub	fp, ip, #4\n\
+	mrs	%0, cpsr\n\
+	msr	cpsr_c, %2	@ select FIQ mode\n\
+	mov	r0, r0\n\
+	stmia	%1, {r8 - r14}\n\
+	msr	cpsr_c, %0	@ return to SVC mode\n\
+	mov	r0, r0\n\
+	ldmea	fp, {fp, sp, pc}"
+	: "=&r" (tmp)
+	: "r" (&regs->ARM_r8), "I" (PSR_I_BIT | PSR_F_BIT | FIQ_MODE));
+}
+
+int claim_fiq(struct fiq_handler *f)
+{
+	int ret = 0;
+
+	if (current_fiq) {
+		ret = -EBUSY;
+
+		if (current_fiq->fiq_op != NULL)
+			ret = current_fiq->fiq_op(current_fiq->dev_id, 1);
+	}
+
+	if (!ret) {
+		f->next = current_fiq;
+		current_fiq = f;
+	}
+
+	return ret;
+}
+
+void release_fiq(struct fiq_handler *f)
+{
+	if (current_fiq != f) {
+		printk(KERN_ERR "%s FIQ trying to release %s FIQ\n",
+		       f->name, current_fiq->name);
+		dump_stack();
+		return;
+	}
+
+	do
+		current_fiq = current_fiq->next;
+	while (current_fiq->fiq_op(current_fiq->dev_id, 0));
+}
+
+void enable_fiq(int fiq)
+{
+	enable_irq(fiq + FIQ_START);
+}
+
+void disable_fiq(int fiq)
+{
+	disable_irq(fiq + FIQ_START);
+}
+
+EXPORT_SYMBOL(set_fiq_handler);
+EXPORT_SYMBOL(set_fiq_regs);
+EXPORT_SYMBOL(get_fiq_regs);
+EXPORT_SYMBOL(claim_fiq);
+EXPORT_SYMBOL(release_fiq);
+EXPORT_SYMBOL(enable_fiq);
+EXPORT_SYMBOL(disable_fiq);
+
+void __init init_FIQ(void)
+{
+	no_fiq_insn = *(unsigned long *)0xffff001c;
+}
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
new file mode 100644
index 000000000000..171b3e811c71
--- /dev/null
+++ b/arch/arm/kernel/head.S
@@ -0,0 +1,516 @@
+/*
+ *  linux/arch/arm/kernel/head.S
+ *
+ *  Copyright (C) 1994-2002 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Kernel startup code for all 32-bit CPUs
+ */
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+
+#include <asm/assembler.h>
+#include <asm/domain.h>
+#include <asm/mach-types.h>
+#include <asm/procinfo.h>
+#include <asm/ptrace.h>
+#include <asm/constants.h>
+#include <asm/system.h>
+
+#define PROCINFO_MMUFLAGS	8
+#define PROCINFO_INITFUNC	12
+
+#define MACHINFO_TYPE		0
+#define MACHINFO_PHYSRAM	4
+#define MACHINFO_PHYSIO		8
+#define MACHINFO_PGOFFIO	12
+#define MACHINFO_NAME		16
+
+#ifndef CONFIG_XIP_KERNEL
+/*
+ * We place the page tables 16K below TEXTADDR.  Therefore, we must make sure
+ * that TEXTADDR is correctly set.  Currently, we expect the least significant
+ * 16 bits to be 0x8000, but we could probably relax this restriction to
+ * TEXTADDR >= PAGE_OFFSET + 0x4000
+ *
+ * Note that swapper_pg_dir is the virtual address of the page tables, and
+ * pgtbl gives us a position-independent reference to these tables.  We can
+ * do this because stext == TEXTADDR
+ */
+#if (TEXTADDR & 0xffff) != 0x8000
+#error TEXTADDR must start at 0xXXXX8000
+#endif
+
+	.globl	swapper_pg_dir
+	.equ	swapper_pg_dir, TEXTADDR - 0x4000
+
+	.macro	pgtbl, rd, phys
+	adr	\rd, stext
+	sub	\rd, \rd, #0x4000
+	.endm
+#else
+/*
+ * XIP Kernel:
+ *
+ * We place the page tables 16K below DATAADDR.  Therefore, we must make sure
+ * that DATAADDR is correctly set.  Currently, we expect the least significant
+ * 16 bits to be 0x8000, but we could probably relax this restriction to
+ * DATAADDR >= PAGE_OFFSET + 0x4000
+ *
+ * Note that pgtbl is meant to return the physical address of swapper_pg_dir.
+ * We can't make it relative to the kernel position in this case since
+ * the kernel can physically be anywhere.
+ */
+#if (DATAADDR & 0xffff) != 0x8000
+#error DATAADDR must start at 0xXXXX8000
+#endif
+
+	.globl	swapper_pg_dir
+	.equ	swapper_pg_dir, DATAADDR - 0x4000
+
+	.macro	pgtbl, rd, phys
+	ldr	\rd, =((DATAADDR - 0x4000) - VIRT_OFFSET)
+	add	\rd, \rd, \phys
+	.endm
+#endif
+
+/*
+ * Kernel startup entry point.
+ * ---------------------------
+ *
+ * This is normally called from the decompressor code.  The requirements
+ * are: MMU = off, D-cache = off, I-cache = dont care, r0 = 0,
+ * r1 = machine nr.
+ *
+ * This code is mostly position independent, so if you link the kernel at
+ * 0xc0008000, you call this at __pa(0xc0008000).
+ *
+ * See linux/arch/arm/tools/mach-types for the complete list of machine
+ * numbers for r1.
+ *
+ * We're trying to keep crap to a minimum; DO NOT add any machine specific
+ * crap here - that's what the boot loader (or in extreme, well justified
+ * circumstances, zImage) is for.
+ */
+	__INIT
+	.type	stext, %function
+ENTRY(stext)
+	msr	cpsr_c, #PSR_F_BIT | PSR_I_BIT | MODE_SVC @ ensure svc mode
+						@ and irqs disabled
+	bl	__lookup_processor_type		@ r5=procinfo r9=cpuid
+	movs	r10, r5				@ invalid processor (r5=0)?
+	beq	__error_p				@ yes, error 'p'
+	bl	__lookup_machine_type		@ r5=machinfo
+	movs	r8, r5				@ invalid machine (r5=0)?
+	beq	__error_a			@ yes, error 'a'
+	bl	__create_page_tables
+
+	/*
+	 * The following calls CPU specific code in a position independent
+	 * manner.  See arch/arm/mm/proc-*.S for details.  r10 = base of
+	 * xxx_proc_info structure selected by __lookup_machine_type
+	 * above.  On return, the CPU will be ready for the MMU to be
+	 * turned on, and r0 will hold the CPU control register value.
+	 */
+	ldr	r13, __switch_data		@ address to jump to after
+						@ mmu has been enabled
+	adr	lr, __enable_mmu		@ return (PIC) address
+	add	pc, r10, #PROCINFO_INITFUNC
+
+	.type	__switch_data, %object
+__switch_data:
+	.long	__mmap_switched
+	.long	__data_loc			@ r4
+	.long	__data_start			@ r5
+	.long	__bss_start			@ r6
+	.long	_end				@ r7
+	.long	processor_id			@ r4
+	.long	__machine_arch_type		@ r5
+	.long	cr_alignment			@ r6
+	.long	init_thread_union+8192		@ sp
+
+/*
+ * The following fragment of code is executed with the MMU on, and uses
+ * absolute addresses; this is not position independent.
+ *
+ *  r0  = cp#15 control register
+ *  r1  = machine ID
+ *  r9  = processor ID
+ */
+	.type	__mmap_switched, %function
+__mmap_switched:
+	adr	r3, __switch_data + 4
+
+	ldmia	r3!, {r4, r5, r6, r7}
+	cmp	r4, r5				@ Copy data segment if needed
+1:	cmpne	r5, r6
+	ldrne	fp, [r4], #4
+	strne	fp, [r5], #4
+	bne	1b
+
+	mov	fp, #0				@ Clear BSS (and zero fp)
+1:	cmp	r6, r7
+	strcc	fp, [r6],#4
+	bcc	1b
+
+	ldmia	r3, {r4, r5, r6, sp}
+	str	r9, [r4]			@ Save processor ID
+	str	r1, [r5]			@ Save machine type
+	bic	r4, r0, #CR_A			@ Clear 'A' bit
+	stmia	r6, {r0, r4}			@ Save control register values
+	b	start_kernel
+
+
+
+/*
+ * Setup common bits before finally enabling the MMU.  Essentially
+ * this is just loading the page table pointer and domain access
+ * registers.
+ */
+	.type	__enable_mmu, %function
+__enable_mmu:
+#ifdef CONFIG_ALIGNMENT_TRAP
+	orr	r0, r0, #CR_A
+#else
+	bic	r0, r0, #CR_A
+#endif
+#ifdef CONFIG_CPU_DCACHE_DISABLE
+	bic	r0, r0, #CR_C
+#endif
+#ifdef CONFIG_CPU_BPREDICT_DISABLE
+	bic	r0, r0, #CR_Z
+#endif
+#ifdef CONFIG_CPU_ICACHE_DISABLE
+	bic	r0, r0, #CR_I
+#endif
+	mov	r5, #(domain_val(DOMAIN_USER, DOMAIN_MANAGER) | \
+		      domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
+		      domain_val(DOMAIN_TABLE, DOMAIN_MANAGER) | \
+		      domain_val(DOMAIN_IO, DOMAIN_CLIENT))
+	mcr	p15, 0, r5, c3, c0, 0		@ load domain access register
+	mcr	p15, 0, r4, c2, c0, 0		@ load page table pointer
+	b	__turn_mmu_on
+
+/*
+ * Enable the MMU.  This completely changes the structure of the visible
+ * memory space.  You will not be able to trace execution through this.
+ * If you have an enquiry about this, *please* check the linux-arm-kernel
+ * mailing list archives BEFORE sending another post to the list.
+ *
+ *  r0  = cp#15 control register
+ *  r13 = *virtual* address to jump to upon completion
+ *
+ * other registers depend on the function called upon completion
+ */
+	.align	5
+	.type	__turn_mmu_on, %function
+__turn_mmu_on:
+	mov	r0, r0
+	mcr	p15, 0, r0, c1, c0, 0		@ write control reg
+	mrc	p15, 0, r3, c0, c0, 0		@ read id reg
+	mov	r3, r3
+	mov	r3, r3
+	mov	pc, r13
+
+
+
+/*
+ * Setup the initial page tables.  We only setup the barest
+ * amount which are required to get the kernel running, which
+ * generally means mapping in the kernel code.
+ *
+ * r8  = machinfo
+ * r9  = cpuid
+ * r10 = procinfo
+ *
+ * Returns:
+ *  r0, r3, r5, r6, r7 corrupted
+ *  r4 = physical page table address
+ */
+	.type	__create_page_tables, %function
+__create_page_tables:
+	ldr	r5, [r8, #MACHINFO_PHYSRAM]	@ physram
+	pgtbl	r4, r5				@ page table address
+
+	/*
+	 * Clear the 16K level 1 swapper page table
+	 */
+	mov	r0, r4
+	mov	r3, #0
+	add	r6, r0, #0x4000
+1:	str	r3, [r0], #4
+	str	r3, [r0], #4
+	str	r3, [r0], #4
+	str	r3, [r0], #4
+	teq	r0, r6
+	bne	1b
+
+	ldr	r7, [r10, #PROCINFO_MMUFLAGS]	@ mmuflags
+
+	/*
+	 * Create identity mapping for first MB of kernel to
+	 * cater for the MMU enable.  This identity mapping
+	 * will be removed by paging_init().  We use our current program
+	 * counter to determine corresponding section base address.
+	 */
+	mov	r6, pc, lsr #20			@ start of kernel section
+	orr	r3, r7, r6, lsl #20		@ flags + kernel base
+	str	r3, [r4, r6, lsl #2]		@ identity mapping
+
+	/*
+	 * Now setup the pagetables for our kernel direct
+	 * mapped region.  We round TEXTADDR down to the
+	 * nearest megabyte boundary.  It is assumed that
+	 * the kernel fits within 4 contigous 1MB sections.
+	 */
+	add	r0, r4,  #(TEXTADDR & 0xff000000) >> 18	@ start of kernel
+	str	r3, [r0, #(TEXTADDR & 0x00f00000) >> 18]!
+	add	r3, r3, #1 << 20
+	str	r3, [r0, #4]!			@ KERNEL + 1MB
+	add	r3, r3, #1 << 20
+	str	r3, [r0, #4]!			@ KERNEL + 2MB
+	add	r3, r3, #1 << 20
+	str	r3, [r0, #4]			@ KERNEL + 3MB
+
+	/*
+	 * Then map first 1MB of ram in case it contains our boot params.
+	 */
+	add	r0, r4, #VIRT_OFFSET >> 18
+	orr	r6, r5, r7
+	str	r6, [r0]
+
+#ifdef CONFIG_XIP_KERNEL
+	/*
+	 * Map some ram to cover our .data and .bss areas.
+	 * Mapping 3MB should be plenty.
+	 */
+	sub	r3, r4, r5
+	mov	r3, r3, lsr #20
+	add	r0, r0, r3, lsl #2
+	add	r6, r6, r3, lsl #20
+	str	r6, [r0], #4
+	add	r6, r6, #(1 << 20)
+	str	r6, [r0], #4
+	add	r6, r6, #(1 << 20)
+	str	r6, [r0]
+#endif
+
+	bic	r7, r7, #0x0c			@ turn off cacheable
+						@ and bufferable bits
+#ifdef CONFIG_DEBUG_LL
+	/*
+	 * Map in IO space for serial debugging.
+	 * This allows debug messages to be output
+	 * via a serial console before paging_init.
+	 */
+	ldr	r3, [r8, #MACHINFO_PGOFFIO]
+	add	r0, r4, r3
+	rsb	r3, r3, #0x4000			@ PTRS_PER_PGD*sizeof(long)
+	cmp	r3, #0x0800			@ limit to 512MB
+	movhi	r3, #0x0800
+	add	r6, r0, r3
+	ldr	r3, [r8, #MACHINFO_PHYSIO]
+	orr	r3, r3, r7
+1:	str	r3, [r0], #4
+	add	r3, r3, #1 << 20
+	teq	r0, r6
+	bne	1b
+#if defined(CONFIG_ARCH_NETWINDER) || defined(CONFIG_ARCH_CATS)
+	/*
+	 * If we're using the NetWinder, we need to map in
+	 * the 16550-type serial port for the debug messages
+	 */
+	teq	r1, #MACH_TYPE_NETWINDER
+	teqne	r1, #MACH_TYPE_CATS
+	bne	1f
+	add	r0, r4, #0x3fc0			@ ff000000
+	mov	r3, #0x7c000000
+	orr	r3, r3, r7
+	str	r3, [r0], #4
+	add	r3, r3, #1 << 20
+	str	r3, [r0], #4
+1:
+#endif
+#endif
+#ifdef CONFIG_ARCH_RPC
+	/*
+	 * Map in screen at 0x02000000 & SCREEN2_BASE
+	 * Similar reasons here - for debug.  This is
+	 * only for Acorn RiscPC architectures.
+	 */
+	add	r0, r4, #0x80			@ 02000000
+	mov	r3, #0x02000000
+	orr	r3, r3, r7
+	str	r3, [r0]
+	add	r0, r4, #0x3600			@ d8000000
+	str	r3, [r0]
+#endif
+	mov	pc, lr
+	.ltorg
+
+
+
+/*
+ * Exception handling.  Something went wrong and we can't proceed.  We
+ * ought to tell the user, but since we don't have any guarantee that
+ * we're even running on the right architecture, we do virtually nothing.
+ *
+ * If CONFIG_DEBUG_LL is set we try to print out something about the error
+ * and hope for the best (useful if bootloader fails to pass a proper
+ * machine ID for example).
+ */
+
+	.type	__error_p, %function
+__error_p:
+#ifdef CONFIG_DEBUG_LL
+	adr	r0, str_p1
+	bl	printascii
+	b	__error
+str_p1:	.asciz	"\nError: unrecognized/unsupported processor variant.\n"
+	.align
+#endif
+
+	.type	__error_a, %function
+__error_a:
+#ifdef CONFIG_DEBUG_LL
+	mov	r4, r1				@ preserve machine ID
+	adr	r0, str_a1
+	bl	printascii
+	mov	r0, r4
+	bl	printhex8
+	adr	r0, str_a2
+	bl	printascii
+	adr	r3, 3f
+	ldmia	r3, {r4, r5, r6}		@ get machine desc list
+	sub	r4, r3, r4			@ get offset between virt&phys
+	add	r5, r5, r4			@ convert virt addresses to
+	add	r6, r6, r4			@ physical address space
+1:	ldr	r0, [r5, #MACHINFO_TYPE]	@ get machine type
+	bl	printhex8
+	mov	r0, #'\t'
+	bl	printch
+	ldr     r0, [r5, #MACHINFO_NAME]	@ get machine name
+	add	r0, r0, r4
+	bl	printascii
+	mov	r0, #'\n'
+	bl	printch
+	add	r5, r5, #SIZEOF_MACHINE_DESC	@ next machine_desc
+	cmp	r5, r6
+	blo	1b
+	adr	r0, str_a3
+	bl	printascii
+	b	__error
+str_a1:	.asciz	"\nError: unrecognized/unsupported machine ID (r1 = 0x"
+str_a2:	.asciz	").\n\nAvailable machine support:\n\nID (hex)\tNAME\n"
+str_a3:	.asciz	"\nPlease check your kernel config and/or bootloader.\n"
+	.align
+#endif
+
+	.type	__error, %function
+__error:
+#ifdef CONFIG_ARCH_RPC
+/*
+ * Turn the screen red on a error - RiscPC only.
+ */
+	mov	r0, #0x02000000
+	mov	r3, #0x11
+	orr	r3, r3, r3, lsl #8
+	orr	r3, r3, r3, lsl #16
+	str	r3, [r0], #4
+	str	r3, [r0], #4
+	str	r3, [r0], #4
+	str	r3, [r0], #4
+#endif
+1:	mov	r0, r0
+	b	1b
+
+
+/*
+ * Read processor ID register (CP#15, CR0), and look up in the linker-built
+ * supported processor list.  Note that we can't use the absolute addresses
+ * for the __proc_info lists since we aren't running with the MMU on
+ * (and therefore, we are not in the correct address space).  We have to
+ * calculate the offset.
+ *
+ * Returns:
+ *	r3, r4, r6 corrupted
+ *	r5 = proc_info pointer in physical address space
+ *	r9 = cpuid
+ */
+	.type	__lookup_processor_type, %function
+__lookup_processor_type:
+	adr	r3, 3f
+	ldmda	r3, {r5, r6, r9}
+	sub	r3, r3, r9			@ get offset between virt&phys
+	add	r5, r5, r3			@ convert virt addresses to
+	add	r6, r6, r3			@ physical address space
+	mrc	p15, 0, r9, c0, c0		@ get processor id
+1:	ldmia	r5, {r3, r4}			@ value, mask
+	and	r4, r4, r9			@ mask wanted bits
+	teq	r3, r4
+	beq	2f
+	add	r5, r5, #PROC_INFO_SZ		@ sizeof(proc_info_list)
+	cmp	r5, r6
+	blo	1b
+	mov	r5, #0				@ unknown processor
+2:	mov	pc, lr
+
+/*
+ * This provides a C-API version of the above function.
+ */
+ENTRY(lookup_processor_type)
+	stmfd	sp!, {r4 - r6, r9, lr}
+	bl	__lookup_processor_type
+	mov	r0, r5
+	ldmfd	sp!, {r4 - r6, r9, pc}
+
+/*
+ * Look in include/asm-arm/procinfo.h and arch/arm/kernel/arch.[ch] for
+ * more information about the __proc_info and __arch_info structures.
+ */
+	.long	__proc_info_begin
+	.long	__proc_info_end
+3:	.long	.
+	.long	__arch_info_begin
+	.long	__arch_info_end
+
+/*
+ * Lookup machine architecture in the linker-build list of architectures.
+ * Note that we can't use the absolute addresses for the __arch_info
+ * lists since we aren't running with the MMU on (and therefore, we are
+ * not in the correct address space).  We have to calculate the offset.
+ *
+ *  r1 = machine architecture number
+ * Returns:
+ *  r3, r4, r6 corrupted
+ *  r5 = mach_info pointer in physical address space
+ */
+	.type	__lookup_machine_type, %function
+__lookup_machine_type:
+	adr	r3, 3b
+	ldmia	r3, {r4, r5, r6}
+	sub	r3, r3, r4			@ get offset between virt&phys
+	add	r5, r5, r3			@ convert virt addresses to
+	add	r6, r6, r3			@ physical address space
+1:	ldr	r3, [r5, #MACHINFO_TYPE]	@ get machine type
+	teq	r3, r1				@ matches loader number?
+	beq	2f				@ found
+	add	r5, r5, #SIZEOF_MACHINE_DESC	@ next machine_desc
+	cmp	r5, r6
+	blo	1b
+	mov	r5, #0				@ unknown machine
+2:	mov	pc, lr
+
+/*
+ * This provides a C-API version of the above function.
+ */
+ENTRY(lookup_machine_type)
+	stmfd	sp!, {r4 - r6, lr}
+	mov	r1, r0
+	bl	__lookup_machine_type
+	mov	r0, r5
+	ldmfd	sp!, {r4 - r6, pc}
diff --git a/arch/arm/kernel/init_task.c b/arch/arm/kernel/init_task.c
new file mode 100644
index 000000000000..a00cca0000bd
--- /dev/null
+++ b/arch/arm/kernel/init_task.c
@@ -0,0 +1,44 @@
+/*
+ *  linux/arch/arm/kernel/init_task.c
+ */
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/init_task.h>
+#include <linux/mqueue.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+
+static struct fs_struct init_fs = INIT_FS;
+static struct files_struct init_files = INIT_FILES;
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+struct mm_struct init_mm = INIT_MM(init_mm);
+
+EXPORT_SYMBOL(init_mm);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is 8192-byte aligned due to the
+ * way process stacks are handled. This is done by making sure
+ * the linker maps this in the .text segment right after head.S,
+ * and making head.S ensure the proper alignment.
+ *
+ * The things we do for performance..
+ */
+union thread_union init_thread_union
+	__attribute__((__section__(".init.task"))) =
+		{ INIT_THREAD_INFO(init_task) };
+
+/*
+ * Initial task structure.
+ *
+ * All other task structs will be allocated on slabs in fork.c
+ */
+struct task_struct init_task = INIT_TASK(init_task);
+
+EXPORT_SYMBOL(init_task);
diff --git a/arch/arm/kernel/io.c b/arch/arm/kernel/io.c
new file mode 100644
index 000000000000..6c20c1188b60
--- /dev/null
+++ b/arch/arm/kernel/io.c
@@ -0,0 +1,51 @@
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+
+/*
+ * Copy data from IO memory space to "real" memory space.
+ * This needs to be optimized.
+ */
+void _memcpy_fromio(void *to, void __iomem *from, size_t count)
+{
+	unsigned char *t = to;
+	while (count) {
+		count--;
+		*t = readb(from);
+		t++;
+		from++;
+	}
+}
+
+/*
+ * Copy data from "real" memory space to IO memory space.
+ * This needs to be optimized.
+ */
+void _memcpy_toio(void __iomem *to, const void *from, size_t count)
+{
+	const unsigned char *f = from;
+	while (count) {
+		count--;
+		writeb(*f, to);
+		f++;
+		to++;
+	}
+}
+
+/*
+ * "memset" on IO memory space.
+ * This needs to be optimized.
+ */
+void _memset_io(void __iomem *dst, int c, size_t count)
+{
+	while (count) {
+		count--;
+		writeb(c, dst);
+		dst++;
+	}
+}
+
+EXPORT_SYMBOL(_memcpy_fromio);
+EXPORT_SYMBOL(_memcpy_toio);
+EXPORT_SYMBOL(_memset_io);
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
new file mode 100644
index 000000000000..ff187f4308f0
--- /dev/null
+++ b/arch/arm/kernel/irq.c
@@ -0,0 +1,1038 @@
+/*
+ *  linux/arch/arm/kernel/irq.c
+ *
+ *  Copyright (C) 1992 Linus Torvalds
+ *  Modifications for ARM processor Copyright (C) 1995-2000 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  This file contains the code used by various IRQ handling routines:
+ *  asking for different IRQ's should be done through these routines
+ *  instead of just grabbing them. Thus setups with different IRQ numbers
+ *  shouldn't result in any weird surprises, and installing new handlers
+ *  should be easier.
+ *
+ *  IRQ's are in fact implemented a bit like signal handlers for the kernel.
+ *  Naturally it's not a 1:1 relation, but there are similarities.
+ */
+#include <linux/config.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/smp.h>
+#include <linux/init.h>
+#include <linux/seq_file.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/kallsyms.h>
+#include <linux/proc_fs.h>
+
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/mach/irq.h>
+
+/*
+ * Maximum IRQ count.  Currently, this is arbitary.  However, it should
+ * not be set too low to prevent false triggering.  Conversely, if it
+ * is set too high, then you could miss a stuck IRQ.
+ *
+ * Maybe we ought to set a timer and re-enable the IRQ at a later time?
+ */
+#define MAX_IRQ_CNT	100000
+
+static int noirqdebug;
+static volatile unsigned long irq_err_count;
+static DEFINE_SPINLOCK(irq_controller_lock);
+static LIST_HEAD(irq_pending);
+
+struct irqdesc irq_desc[NR_IRQS];
+void (*init_arch_irq)(void) __initdata = NULL;
+
+/*
+ * No architecture-specific irq_finish function defined in arm/arch/irqs.h.
+ */
+#ifndef irq_finish
+#define irq_finish(irq) do { } while (0)
+#endif
+
+/*
+ * Dummy mask/unmask handler
+ */
+void dummy_mask_unmask_irq(unsigned int irq)
+{
+}
+
+irqreturn_t no_action(int irq, void *dev_id, struct pt_regs *regs)
+{
+	return IRQ_NONE;
+}
+
+void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	irq_err_count += 1;
+	printk(KERN_ERR "IRQ: spurious interrupt %d\n", irq);
+}
+
+static struct irqchip bad_chip = {
+	.ack	= dummy_mask_unmask_irq,
+	.mask	= dummy_mask_unmask_irq,
+	.unmask = dummy_mask_unmask_irq,
+};
+
+static struct irqdesc bad_irq_desc = {
+	.chip		= &bad_chip,
+	.handle		= do_bad_IRQ,
+	.pend		= LIST_HEAD_INIT(bad_irq_desc.pend),
+	.disable_depth	= 1,
+};
+
+#ifdef CONFIG_SMP
+void synchronize_irq(unsigned int irq)
+{
+	struct irqdesc *desc = irq_desc + irq;
+
+	while (desc->running)
+		barrier();
+}
+EXPORT_SYMBOL(synchronize_irq);
+
+#define smp_set_running(desc)	do { desc->running = 1; } while (0)
+#define smp_clear_running(desc)	do { desc->running = 0; } while (0)
+#else
+#define smp_set_running(desc)	do { } while (0)
+#define smp_clear_running(desc)	do { } while (0)
+#endif
+
+/**
+ *	disable_irq_nosync - disable an irq without waiting
+ *	@irq: Interrupt to disable
+ *
+ *	Disable the selected interrupt line.  Enables and disables
+ *	are nested.  We do this lazily.
+ *
+ *	This function may be called from IRQ context.
+ */
+void disable_irq_nosync(unsigned int irq)
+{
+	struct irqdesc *desc = irq_desc + irq;
+	unsigned long flags;
+
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	desc->disable_depth++;
+	list_del_init(&desc->pend);
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+EXPORT_SYMBOL(disable_irq_nosync);
+
+/**
+ *	disable_irq - disable an irq and wait for completion
+ *	@irq: Interrupt to disable
+ *
+ *	Disable the selected interrupt line.  Enables and disables
+ *	are nested.  This functions waits for any pending IRQ
+ *	handlers for this interrupt to complete before returning.
+ *	If you use this function while holding a resource the IRQ
+ *	handler may need you will deadlock.
+ *
+ *	This function may be called - with care - from IRQ context.
+ */
+void disable_irq(unsigned int irq)
+{
+	struct irqdesc *desc = irq_desc + irq;
+
+	disable_irq_nosync(irq);
+	if (desc->action)
+		synchronize_irq(irq);
+}
+EXPORT_SYMBOL(disable_irq);
+
+/**
+ *	enable_irq - enable interrupt handling on an irq
+ *	@irq: Interrupt to enable
+ *
+ *	Re-enables the processing of interrupts on this IRQ line.
+ *	Note that this may call the interrupt handler, so you may
+ *	get unexpected results if you hold IRQs disabled.
+ *
+ *	This function may be called from IRQ context.
+ */
+void enable_irq(unsigned int irq)
+{
+	struct irqdesc *desc = irq_desc + irq;
+	unsigned long flags;
+
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	if (unlikely(!desc->disable_depth)) {
+		printk("enable_irq(%u) unbalanced from %p\n", irq,
+			__builtin_return_address(0));
+	} else if (!--desc->disable_depth) {
+		desc->probing = 0;
+		desc->chip->unmask(irq);
+
+		/*
+		 * If the interrupt is waiting to be processed,
+		 * try to re-run it.  We can't directly run it
+		 * from here since the caller might be in an
+		 * interrupt-protected region.
+		 */
+		if (desc->pending && list_empty(&desc->pend)) {
+			desc->pending = 0;
+			if (!desc->chip->retrigger ||
+			    desc->chip->retrigger(irq))
+				list_add(&desc->pend, &irq_pending);
+		}
+	}
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+EXPORT_SYMBOL(enable_irq);
+
+/*
+ * Enable wake on selected irq
+ */
+void enable_irq_wake(unsigned int irq)
+{
+	struct irqdesc *desc = irq_desc + irq;
+	unsigned long flags;
+
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	if (desc->chip->wake)
+		desc->chip->wake(irq, 1);
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+EXPORT_SYMBOL(enable_irq_wake);
+
+void disable_irq_wake(unsigned int irq)
+{
+	struct irqdesc *desc = irq_desc + irq;
+	unsigned long flags;
+
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	if (desc->chip->wake)
+		desc->chip->wake(irq, 0);
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+EXPORT_SYMBOL(disable_irq_wake);
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+	int i = *(loff_t *) v, cpu;
+	struct irqaction * action;
+	unsigned long flags;
+
+	if (i == 0) {
+		char cpuname[12];
+
+		seq_printf(p, "    ");
+		for_each_present_cpu(cpu) {
+			sprintf(cpuname, "CPU%d", cpu);
+			seq_printf(p, " %10s", cpuname);
+		}
+		seq_putc(p, '\n');
+	}
+
+	if (i < NR_IRQS) {
+		spin_lock_irqsave(&irq_controller_lock, flags);
+	    	action = irq_desc[i].action;
+		if (!action)
+			goto unlock;
+
+		seq_printf(p, "%3d: ", i);
+		for_each_present_cpu(cpu)
+			seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]);
+		seq_printf(p, "  %s", action->name);
+		for (action = action->next; action; action = action->next)
+			seq_printf(p, ", %s", action->name);
+
+		seq_putc(p, '\n');
+unlock:
+		spin_unlock_irqrestore(&irq_controller_lock, flags);
+	} else if (i == NR_IRQS) {
+#ifdef CONFIG_ARCH_ACORN
+		show_fiq_list(p, v);
+#endif
+#ifdef CONFIG_SMP
+		show_ipi_list(p);
+#endif
+		seq_printf(p, "Err: %10lu\n", irq_err_count);
+	}
+	return 0;
+}
+
+/*
+ * IRQ lock detection.
+ *
+ * Hopefully, this should get us out of a few locked situations.
+ * However, it may take a while for this to happen, since we need
+ * a large number if IRQs to appear in the same jiffie with the
+ * same instruction pointer (or within 2 instructions).
+ */
+static int check_irq_lock(struct irqdesc *desc, int irq, struct pt_regs *regs)
+{
+	unsigned long instr_ptr = instruction_pointer(regs);
+
+	if (desc->lck_jif == jiffies &&
+	    desc->lck_pc >= instr_ptr && desc->lck_pc < instr_ptr + 8) {
+		desc->lck_cnt += 1;
+
+		if (desc->lck_cnt > MAX_IRQ_CNT) {
+			printk(KERN_ERR "IRQ LOCK: IRQ%d is locking the system, disabled\n", irq);
+			return 1;
+		}
+	} else {
+		desc->lck_cnt = 0;
+		desc->lck_pc  = instruction_pointer(regs);
+		desc->lck_jif = jiffies;
+	}
+	return 0;
+}
+
+static void
+report_bad_irq(unsigned int irq, struct pt_regs *regs, struct irqdesc *desc, int ret)
+{
+	static int count = 100;
+	struct irqaction *action;
+
+	if (!count || noirqdebug)
+		return;
+
+	count--;
+
+	if (ret != IRQ_HANDLED && ret != IRQ_NONE) {
+		printk("irq%u: bogus retval mask %x\n", irq, ret);
+	} else {
+		printk("irq%u: nobody cared\n", irq);
+	}
+	show_regs(regs);
+	dump_stack();
+	printk(KERN_ERR "handlers:");
+	action = desc->action;
+	do {
+		printk("\n" KERN_ERR "[<%p>]", action->handler);
+		print_symbol(" (%s)", (unsigned long)action->handler);
+		action = action->next;
+	} while (action);
+	printk("\n");
+}
+
+static int
+__do_irq(unsigned int irq, struct irqaction *action, struct pt_regs *regs)
+{
+	unsigned int status;
+	int ret, retval = 0;
+
+	spin_unlock(&irq_controller_lock);
+
+	if (!(action->flags & SA_INTERRUPT))
+		local_irq_enable();
+
+	status = 0;
+	do {
+		ret = action->handler(irq, action->dev_id, regs);
+		if (ret == IRQ_HANDLED)
+			status |= action->flags;
+		retval |= ret;
+		action = action->next;
+	} while (action);
+
+	if (status & SA_SAMPLE_RANDOM)
+		add_interrupt_randomness(irq);
+
+	spin_lock_irq(&irq_controller_lock);
+
+	return retval;
+}
+
+/*
+ * This is for software-decoded IRQs.  The caller is expected to
+ * handle the ack, clear, mask and unmask issues.
+ */
+void
+do_simple_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	struct irqaction *action;
+	const unsigned int cpu = smp_processor_id();
+
+	desc->triggered = 1;
+
+	kstat_cpu(cpu).irqs[irq]++;
+
+	smp_set_running(desc);
+
+	action = desc->action;
+	if (action) {
+		int ret = __do_irq(irq, action, regs);
+		if (ret != IRQ_HANDLED)
+			report_bad_irq(irq, regs, desc, ret);
+	}
+
+	smp_clear_running(desc);
+}
+
+/*
+ * Most edge-triggered IRQ implementations seem to take a broken
+ * approach to this.  Hence the complexity.
+ */
+void
+do_edge_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	const unsigned int cpu = smp_processor_id();
+
+	desc->triggered = 1;
+
+	/*
+	 * If we're currently running this IRQ, or its disabled,
+	 * we shouldn't process the IRQ.  Instead, turn on the
+	 * hardware masks.
+	 */
+	if (unlikely(desc->running || desc->disable_depth))
+		goto running;
+
+	/*
+	 * Acknowledge and clear the IRQ, but don't mask it.
+	 */
+	desc->chip->ack(irq);
+
+	/*
+	 * Mark the IRQ currently in progress.
+	 */
+	desc->running = 1;
+
+	kstat_cpu(cpu).irqs[irq]++;
+
+	do {
+		struct irqaction *action;
+
+		action = desc->action;
+		if (!action)
+			break;
+
+		if (desc->pending && !desc->disable_depth) {
+			desc->pending = 0;
+			desc->chip->unmask(irq);
+		}
+
+		__do_irq(irq, action, regs);
+	} while (desc->pending && !desc->disable_depth);
+
+	desc->running = 0;
+
+	/*
+	 * If we were disabled or freed, shut down the handler.
+	 */
+	if (likely(desc->action && !check_irq_lock(desc, irq, regs)))
+		return;
+
+ running:
+	/*
+	 * We got another IRQ while this one was masked or
+	 * currently running.  Delay it.
+	 */
+	desc->pending = 1;
+	desc->chip->mask(irq);
+	desc->chip->ack(irq);
+}
+
+/*
+ * Level-based IRQ handler.  Nice and simple.
+ */
+void
+do_level_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	struct irqaction *action;
+	const unsigned int cpu = smp_processor_id();
+
+	desc->triggered = 1;
+
+	/*
+	 * Acknowledge, clear _AND_ disable the interrupt.
+	 */
+	desc->chip->ack(irq);
+
+	if (likely(!desc->disable_depth)) {
+		kstat_cpu(cpu).irqs[irq]++;
+
+		smp_set_running(desc);
+
+		/*
+		 * Return with this interrupt masked if no action
+		 */
+		action = desc->action;
+		if (action) {
+			int ret = __do_irq(irq, desc->action, regs);
+
+			if (ret != IRQ_HANDLED)
+				report_bad_irq(irq, regs, desc, ret);
+
+			if (likely(!desc->disable_depth &&
+				   !check_irq_lock(desc, irq, regs)))
+				desc->chip->unmask(irq);
+		}
+
+		smp_clear_running(desc);
+	}
+}
+
+static void do_pending_irqs(struct pt_regs *regs)
+{
+	struct list_head head, *l, *n;
+
+	do {
+		struct irqdesc *desc;
+
+		/*
+		 * First, take the pending interrupts off the list.
+		 * The act of calling the handlers may add some IRQs
+		 * back onto the list.
+		 */
+		head = irq_pending;
+		INIT_LIST_HEAD(&irq_pending);
+		head.next->prev = &head;
+		head.prev->next = &head;
+
+		/*
+		 * Now run each entry.  We must delete it from our
+		 * list before calling the handler.
+		 */
+		list_for_each_safe(l, n, &head) {
+			desc = list_entry(l, struct irqdesc, pend);
+			list_del_init(&desc->pend);
+			desc->handle(desc - irq_desc, desc, regs);
+		}
+
+		/*
+		 * The list must be empty.
+		 */
+		BUG_ON(!list_empty(&head));
+	} while (!list_empty(&irq_pending));
+}
+
+/*
+ * do_IRQ handles all hardware IRQ's.  Decoded IRQs should not
+ * come via this function.  Instead, they should provide their
+ * own 'handler'
+ */
+asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
+{
+	struct irqdesc *desc = irq_desc + irq;
+
+	/*
+	 * Some hardware gives randomly wrong interrupts.  Rather
+	 * than crashing, do something sensible.
+	 */
+	if (irq >= NR_IRQS)
+		desc = &bad_irq_desc;
+
+	irq_enter();
+	spin_lock(&irq_controller_lock);
+	desc->handle(irq, desc, regs);
+
+	/*
+	 * Now re-run any pending interrupts.
+	 */
+	if (!list_empty(&irq_pending))
+		do_pending_irqs(regs);
+
+	irq_finish(irq);
+
+	spin_unlock(&irq_controller_lock);
+	irq_exit();
+}
+
+void __set_irq_handler(unsigned int irq, irq_handler_t handle, int is_chained)
+{
+	struct irqdesc *desc;
+	unsigned long flags;
+
+	if (irq >= NR_IRQS) {
+		printk(KERN_ERR "Trying to install handler for IRQ%d\n", irq);
+		return;
+	}
+
+	if (handle == NULL)
+		handle = do_bad_IRQ;
+
+	desc = irq_desc + irq;
+
+	if (is_chained && desc->chip == &bad_chip)
+		printk(KERN_WARNING "Trying to install chained handler for IRQ%d\n", irq);
+
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	if (handle == do_bad_IRQ) {
+		desc->chip->mask(irq);
+		desc->chip->ack(irq);
+		desc->disable_depth = 1;
+	}
+	desc->handle = handle;
+	if (handle != do_bad_IRQ && is_chained) {
+		desc->valid = 0;
+		desc->probe_ok = 0;
+		desc->disable_depth = 0;
+		desc->chip->unmask(irq);
+	}
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+
+void set_irq_chip(unsigned int irq, struct irqchip *chip)
+{
+	struct irqdesc *desc;
+	unsigned long flags;
+
+	if (irq >= NR_IRQS) {
+		printk(KERN_ERR "Trying to install chip for IRQ%d\n", irq);
+		return;
+	}
+
+	if (chip == NULL)
+		chip = &bad_chip;
+
+	desc = irq_desc + irq;
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	desc->chip = chip;
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+
+int set_irq_type(unsigned int irq, unsigned int type)
+{
+	struct irqdesc *desc;
+	unsigned long flags;
+	int ret = -ENXIO;
+
+	if (irq >= NR_IRQS) {
+		printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq);
+		return -ENODEV;
+	}
+
+	desc = irq_desc + irq;
+	if (desc->chip->type) {
+		spin_lock_irqsave(&irq_controller_lock, flags);
+		ret = desc->chip->type(irq, type);
+		spin_unlock_irqrestore(&irq_controller_lock, flags);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(set_irq_type);
+
+void set_irq_flags(unsigned int irq, unsigned int iflags)
+{
+	struct irqdesc *desc;
+	unsigned long flags;
+
+	if (irq >= NR_IRQS) {
+		printk(KERN_ERR "Trying to set irq flags for IRQ%d\n", irq);
+		return;
+	}
+
+	desc = irq_desc + irq;
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	desc->valid = (iflags & IRQF_VALID) != 0;
+	desc->probe_ok = (iflags & IRQF_PROBE) != 0;
+	desc->noautoenable = (iflags & IRQF_NOAUTOEN) != 0;
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+}
+
+int setup_irq(unsigned int irq, struct irqaction *new)
+{
+	int shared = 0;
+	struct irqaction *old, **p;
+	unsigned long flags;
+	struct irqdesc *desc;
+
+	/*
+	 * Some drivers like serial.c use request_irq() heavily,
+	 * so we have to be careful not to interfere with a
+	 * running system.
+	 */
+	if (new->flags & SA_SAMPLE_RANDOM) {
+		/*
+		 * This function might sleep, we want to call it first,
+		 * outside of the atomic block.
+		 * Yes, this might clear the entropy pool if the wrong
+		 * driver is attempted to be loaded, without actually
+		 * installing a new handler, but is this really a problem,
+		 * only the sysadmin is able to do this.
+		 */
+	        rand_initialize_irq(irq);
+	}
+
+	/*
+	 * The following block of code has to be executed atomically
+	 */
+	desc = irq_desc + irq;
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	p = &desc->action;
+	if ((old = *p) != NULL) {
+		/* Can't share interrupts unless both agree to */
+		if (!(old->flags & new->flags & SA_SHIRQ)) {
+			spin_unlock_irqrestore(&irq_controller_lock, flags);
+			return -EBUSY;
+		}
+
+		/* add new interrupt at end of irq queue */
+		do {
+			p = &old->next;
+			old = *p;
+		} while (old);
+		shared = 1;
+	}
+
+	*p = new;
+
+	if (!shared) {
+ 		desc->probing = 0;
+		desc->running = 0;
+		desc->pending = 0;
+		desc->disable_depth = 1;
+		if (!desc->noautoenable) {
+			desc->disable_depth = 0;
+			desc->chip->unmask(irq);
+		}
+	}
+
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+	return 0;
+}
+
+/**
+ *	request_irq - allocate an interrupt line
+ *	@irq: Interrupt line to allocate
+ *	@handler: Function to be called when the IRQ occurs
+ *	@irqflags: Interrupt type flags
+ *	@devname: An ascii name for the claiming device
+ *	@dev_id: A cookie passed back to the handler function
+ *
+ *	This call allocates interrupt resources and enables the
+ *	interrupt line and IRQ handling. From the point this
+ *	call is made your handler function may be invoked. Since
+ *	your handler function must clear any interrupt the board
+ *	raises, you must take care both to initialise your hardware
+ *	and to set up the interrupt handler in the right order.
+ *
+ *	Dev_id must be globally unique. Normally the address of the
+ *	device data structure is used as the cookie. Since the handler
+ *	receives this value it makes sense to use it.
+ *
+ *	If your interrupt is shared you must pass a non NULL dev_id
+ *	as this is required when freeing the interrupt.
+ *
+ *	Flags:
+ *
+ *	SA_SHIRQ		Interrupt is shared
+ *
+ *	SA_INTERRUPT		Disable local interrupts while processing
+ *
+ *	SA_SAMPLE_RANDOM	The interrupt can be used for entropy
+ *
+ */
+int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),
+		 unsigned long irq_flags, const char * devname, void *dev_id)
+{
+	unsigned long retval;
+	struct irqaction *action;
+
+	if (irq >= NR_IRQS || !irq_desc[irq].valid || !handler ||
+	    (irq_flags & SA_SHIRQ && !dev_id))
+		return -EINVAL;
+
+	action = (struct irqaction *)kmalloc(sizeof(struct irqaction), GFP_KERNEL);
+	if (!action)
+		return -ENOMEM;
+
+	action->handler = handler;
+	action->flags = irq_flags;
+	cpus_clear(action->mask);
+	action->name = devname;
+	action->next = NULL;
+	action->dev_id = dev_id;
+
+	retval = setup_irq(irq, action);
+
+	if (retval)
+		kfree(action);
+	return retval;
+}
+
+EXPORT_SYMBOL(request_irq);
+
+/**
+ *	free_irq - free an interrupt
+ *	@irq: Interrupt line to free
+ *	@dev_id: Device identity to free
+ *
+ *	Remove an interrupt handler. The handler is removed and if the
+ *	interrupt line is no longer in use by any driver it is disabled.
+ *	On a shared IRQ the caller must ensure the interrupt is disabled
+ *	on the card it drives before calling this function.
+ *
+ *	This function must not be called from interrupt context.
+ */
+void free_irq(unsigned int irq, void *dev_id)
+{
+	struct irqaction * action, **p;
+	unsigned long flags;
+
+	if (irq >= NR_IRQS || !irq_desc[irq].valid) {
+		printk(KERN_ERR "Trying to free IRQ%d\n",irq);
+		dump_stack();
+		return;
+	}
+
+	spin_lock_irqsave(&irq_controller_lock, flags);
+	for (p = &irq_desc[irq].action; (action = *p) != NULL; p = &action->next) {
+		if (action->dev_id != dev_id)
+			continue;
+
+	    	/* Found it - now free it */
+		*p = action->next;
+		break;
+	}
+	spin_unlock_irqrestore(&irq_controller_lock, flags);
+
+	if (!action) {
+		printk(KERN_ERR "Trying to free free IRQ%d\n",irq);
+		dump_stack();
+	} else {
+		synchronize_irq(irq);
+		kfree(action);
+	}
+}
+
+EXPORT_SYMBOL(free_irq);
+
+static DECLARE_MUTEX(probe_sem);
+
+/* Start the interrupt probing.  Unlike other architectures,
+ * we don't return a mask of interrupts from probe_irq_on,
+ * but return the number of interrupts enabled for the probe.
+ * The interrupts which have been enabled for probing is
+ * instead recorded in the irq_desc structure.
+ */
+unsigned long probe_irq_on(void)
+{
+	unsigned int i, irqs = 0;
+	unsigned long delay;
+
+	down(&probe_sem);
+
+	/*
+	 * first snaffle up any unassigned but
+	 * probe-able interrupts
+	 */
+	spin_lock_irq(&irq_controller_lock);
+	for (i = 0; i < NR_IRQS; i++) {
+		if (!irq_desc[i].probe_ok || irq_desc[i].action)
+			continue;
+
+		irq_desc[i].probing = 1;
+		irq_desc[i].triggered = 0;
+		if (irq_desc[i].chip->type)
+			irq_desc[i].chip->type(i, IRQT_PROBE);
+		irq_desc[i].chip->unmask(i);
+		irqs += 1;
+	}
+	spin_unlock_irq(&irq_controller_lock);
+
+	/*
+	 * wait for spurious interrupts to mask themselves out again
+	 */
+	for (delay = jiffies + HZ/10; time_before(jiffies, delay); )
+		/* min 100ms delay */;
+
+	/*
+	 * now filter out any obviously spurious interrupts
+	 */
+	spin_lock_irq(&irq_controller_lock);
+	for (i = 0; i < NR_IRQS; i++) {
+		if (irq_desc[i].probing && irq_desc[i].triggered) {
+			irq_desc[i].probing = 0;
+			irqs -= 1;
+		}
+	}
+	spin_unlock_irq(&irq_controller_lock);
+
+	return irqs;
+}
+
+EXPORT_SYMBOL(probe_irq_on);
+
+unsigned int probe_irq_mask(unsigned long irqs)
+{
+	unsigned int mask = 0, i;
+
+	spin_lock_irq(&irq_controller_lock);
+	for (i = 0; i < 16 && i < NR_IRQS; i++)
+		if (irq_desc[i].probing && irq_desc[i].triggered)
+			mask |= 1 << i;
+	spin_unlock_irq(&irq_controller_lock);
+
+	up(&probe_sem);
+
+	return mask;
+}
+EXPORT_SYMBOL(probe_irq_mask);
+
+/*
+ * Possible return values:
+ *  >= 0 - interrupt number
+ *    -1 - no interrupt/many interrupts
+ */
+int probe_irq_off(unsigned long irqs)
+{
+	unsigned int i;
+	int irq_found = NO_IRQ;
+
+	/*
+	 * look at the interrupts, and find exactly one
+	 * that we were probing has been triggered
+	 */
+	spin_lock_irq(&irq_controller_lock);
+	for (i = 0; i < NR_IRQS; i++) {
+		if (irq_desc[i].probing &&
+		    irq_desc[i].triggered) {
+			if (irq_found != NO_IRQ) {
+				irq_found = NO_IRQ;
+				goto out;
+			}
+			irq_found = i;
+		}
+	}
+
+	if (irq_found == -1)
+		irq_found = NO_IRQ;
+out:
+	spin_unlock_irq(&irq_controller_lock);
+
+	up(&probe_sem);
+
+	return irq_found;
+}
+
+EXPORT_SYMBOL(probe_irq_off);
+
+#ifdef CONFIG_SMP
+static void route_irq(struct irqdesc *desc, unsigned int irq, unsigned int cpu)
+{
+	pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->cpu, cpu);
+
+	spin_lock_irq(&irq_controller_lock);
+	desc->cpu = cpu;
+	desc->chip->set_cpu(desc, irq, cpu);
+	spin_unlock_irq(&irq_controller_lock);
+}
+
+#ifdef CONFIG_PROC_FS
+static int
+irq_affinity_read_proc(char *page, char **start, off_t off, int count,
+		       int *eof, void *data)
+{
+	struct irqdesc *desc = irq_desc + ((int)data);
+	int len = cpumask_scnprintf(page, count, desc->affinity);
+
+	if (count - len < 2)
+		return -EINVAL;
+	page[len++] = '\n';
+	page[len] = '\0';
+
+	return len;
+}
+
+static int
+irq_affinity_write_proc(struct file *file, const char __user *buffer,
+			unsigned long count, void *data)
+{
+	unsigned int irq = (unsigned int)data;
+	struct irqdesc *desc = irq_desc + irq;
+	cpumask_t affinity, tmp;
+	int ret = -EIO;
+
+	if (!desc->chip->set_cpu)
+		goto out;
+
+	ret = cpumask_parse(buffer, count, affinity);
+	if (ret)
+		goto out;
+
+	cpus_and(tmp, affinity, cpu_online_map);
+	if (cpus_empty(tmp)) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	desc->affinity = affinity;
+	route_irq(desc, irq, first_cpu(tmp));
+	ret = count;
+
+ out:
+	return ret;
+}
+#endif
+#endif
+
+void __init init_irq_proc(void)
+{
+#if defined(CONFIG_SMP) && defined(CONFIG_PROC_FS)
+	struct proc_dir_entry *dir;
+	int irq;
+
+	dir = proc_mkdir("irq", 0);
+	if (!dir)
+		return;
+
+	for (irq = 0; irq < NR_IRQS; irq++) {
+		struct proc_dir_entry *entry;
+		struct irqdesc *desc;
+		char name[16];
+
+		desc = irq_desc + irq;
+		memset(name, 0, sizeof(name));
+		snprintf(name, sizeof(name) - 1, "%u", irq);
+
+		desc->procdir = proc_mkdir(name, dir);
+		if (!desc->procdir)
+			continue;
+
+		entry = create_proc_entry("smp_affinity", 0600, desc->procdir);
+		if (entry) {
+			entry->nlink = 1;
+			entry->data = (void *)irq;
+			entry->read_proc = irq_affinity_read_proc;
+			entry->write_proc = irq_affinity_write_proc;
+		}
+	}
+#endif
+}
+
+void __init init_IRQ(void)
+{
+	struct irqdesc *desc;
+	extern void init_dma(void);
+	int irq;
+
+#ifdef CONFIG_SMP
+	bad_irq_desc.affinity = CPU_MASK_ALL;
+	bad_irq_desc.cpu = smp_processor_id();
+#endif
+
+	for (irq = 0, desc = irq_desc; irq < NR_IRQS; irq++, desc++) {
+		*desc = bad_irq_desc;
+		INIT_LIST_HEAD(&desc->pend);
+	}
+
+	init_arch_irq();
+	init_dma();
+}
+
+static int __init noirqdebug_setup(char *str)
+{
+	noirqdebug = 1;
+	return 1;
+}
+
+__setup("noirqdebug", noirqdebug_setup);
diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c
new file mode 100644
index 000000000000..685c3e591a7e
--- /dev/null
+++ b/arch/arm/kernel/isa.c
@@ -0,0 +1,53 @@
+/*
+ *  linux/arch/arm/kernel/isa.c
+ *
+ *  Copyright (C) 1999 Phil Blundell
+ *
+ *  ISA shared memory and I/O port support
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+/* 
+ * Nothing about this is actually ARM specific.  One day we could move
+ * it into kernel/resource.c or some place like that.  
+ */
+
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/sysctl.h>
+#include <linux/init.h>
+
+static unsigned int isa_membase, isa_portbase, isa_portshift;
+
+static ctl_table ctl_isa_vars[4] = {
+	{BUS_ISA_MEM_BASE, "membase", &isa_membase, 
+	 sizeof(isa_membase), 0444, NULL, &proc_dointvec},
+	{BUS_ISA_PORT_BASE, "portbase", &isa_portbase, 
+	 sizeof(isa_portbase), 0444, NULL, &proc_dointvec},
+	{BUS_ISA_PORT_SHIFT, "portshift", &isa_portshift, 
+	 sizeof(isa_portshift), 0444, NULL, &proc_dointvec},
+	{0}
+};
+
+static struct ctl_table_header *isa_sysctl_header;
+
+static ctl_table ctl_isa[2] = {{CTL_BUS_ISA, "isa", NULL, 0, 0555, ctl_isa_vars},
+			       {0}};
+static ctl_table ctl_bus[2] = {{CTL_BUS, "bus", NULL, 0, 0555, ctl_isa},
+			       {0}};
+
+void __init
+register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
+{
+	isa_membase = membase;
+	isa_portbase = portbase;
+	isa_portshift = portshift;
+	isa_sysctl_header = register_sysctl_table(ctl_bus, 0);
+}
diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S
new file mode 100644
index 000000000000..8f74e24536ba
--- /dev/null
+++ b/arch/arm/kernel/iwmmxt.S
@@ -0,0 +1,320 @@
+/*
+ *  linux/arch/arm/kernel/iwmmxt.S
+ *
+ *  XScale iWMMXt (Concan) context switching and handling
+ *
+ *  Initial code:
+ *  Copyright (c) 2003, Intel Corporation
+ *
+ *  Full lazy switching support, optimizations and more, by Nicolas Pitre
+*   Copyright (c) 2003-2004, MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/linkage.h>
+#include <asm/ptrace.h>
+#include <asm/thread_info.h>
+#include <asm/constants.h>
+
+#define MMX_WR0		 	(0x00)
+#define MMX_WR1		 	(0x08)
+#define MMX_WR2		 	(0x10)
+#define MMX_WR3			(0x18)
+#define MMX_WR4		 	(0x20)
+#define MMX_WR5		 	(0x28)
+#define MMX_WR6		 	(0x30)
+#define MMX_WR7		 	(0x38)
+#define MMX_WR8		 	(0x40)
+#define MMX_WR9		 	(0x48)
+#define MMX_WR10		(0x50)
+#define MMX_WR11		(0x58)
+#define MMX_WR12		(0x60)
+#define MMX_WR13		(0x68)
+#define MMX_WR14		(0x70)
+#define MMX_WR15		(0x78)
+#define MMX_WCSSF		(0x80)
+#define MMX_WCASF		(0x84)
+#define MMX_WCGR0		(0x88)
+#define MMX_WCGR1		(0x8C)
+#define MMX_WCGR2		(0x90)
+#define MMX_WCGR3		(0x94)
+
+#define MMX_SIZE		(0x98)
+
+	.text
+
+/*
+ * Lazy switching of Concan coprocessor context
+ *
+ * r10 = struct thread_info pointer
+ * r9  = ret_from_exception
+ * lr  = undefined instr exit
+ *
+ * called from prefetch exception handler with interrupts disabled
+ */
+
+ENTRY(iwmmxt_task_enable)
+
+	mrc	p15, 0, r2, c15, c1, 0
+	tst	r2, #0x3			@ CP0 and CP1 accessible?
+	movne	pc, lr				@ if so no business here
+	orr	r2, r2, #0x3			@ enable access to CP0 and CP1
+	mcr	p15, 0, r2, c15, c1, 0
+
+	ldr	r3, =concan_owner
+	add	r0, r10, #TI_IWMMXT_STATE	@ get task Concan save area
+	ldr	r2, [sp, #60]			@ current task pc value
+	ldr	r1, [r3]			@ get current Concan owner
+	str	r0, [r3]			@ this task now owns Concan regs
+	sub	r2, r2, #4			@ adjust pc back
+	str	r2, [sp, #60]
+
+	mrc	p15, 0, r2, c2, c0, 0
+	mov	r2, r2				@ cpwait
+
+	teq	r1, #0				@ test for last ownership
+	mov	lr, r9				@ normal exit from exception
+	beq	concan_load			@ no owner, skip save
+
+concan_save:
+
+	tmrc	r2, wCon
+
+	@ CUP? wCx
+	tst	r2, #0x1
+	beq 	1f
+
+concan_dump:
+
+	wstrw	wCSSF, [r1, #MMX_WCSSF]
+	wstrw	wCASF, [r1, #MMX_WCASF]
+	wstrw	wCGR0, [r1, #MMX_WCGR0]
+	wstrw	wCGR1, [r1, #MMX_WCGR1]
+	wstrw	wCGR2, [r1, #MMX_WCGR2]
+	wstrw	wCGR3, [r1, #MMX_WCGR3]
+
+1:	@ MUP? wRn
+	tst	r2, #0x2
+	beq	2f
+
+	wstrd	wR0,  [r1, #MMX_WR0]
+	wstrd	wR1,  [r1, #MMX_WR1]
+	wstrd	wR2,  [r1, #MMX_WR2]
+	wstrd	wR3,  [r1, #MMX_WR3]
+	wstrd	wR4,  [r1, #MMX_WR4]
+	wstrd	wR5,  [r1, #MMX_WR5]
+	wstrd	wR6,  [r1, #MMX_WR6]
+	wstrd	wR7,  [r1, #MMX_WR7]
+	wstrd	wR8,  [r1, #MMX_WR8]
+	wstrd	wR9,  [r1, #MMX_WR9]
+	wstrd	wR10, [r1, #MMX_WR10]
+	wstrd	wR11, [r1, #MMX_WR11]
+	wstrd	wR12, [r1, #MMX_WR12]
+	wstrd	wR13, [r1, #MMX_WR13]
+	wstrd	wR14, [r1, #MMX_WR14]
+	wstrd	wR15, [r1, #MMX_WR15]
+
+2:	teq	r0, #0				@ anything to load?
+	moveq	pc, lr
+
+concan_load:
+
+	@ Load wRn
+	wldrd	wR0,  [r0, #MMX_WR0]
+	wldrd	wR1,  [r0, #MMX_WR1]
+	wldrd	wR2,  [r0, #MMX_WR2]
+	wldrd	wR3,  [r0, #MMX_WR3]
+	wldrd	wR4,  [r0, #MMX_WR4]
+	wldrd	wR5,  [r0, #MMX_WR5]
+	wldrd	wR6,  [r0, #MMX_WR6]
+	wldrd	wR7,  [r0, #MMX_WR7]
+	wldrd	wR8,  [r0, #MMX_WR8]
+	wldrd	wR9,  [r0, #MMX_WR9]
+	wldrd	wR10, [r0, #MMX_WR10]
+	wldrd	wR11, [r0, #MMX_WR11]
+	wldrd	wR12, [r0, #MMX_WR12]
+	wldrd	wR13, [r0, #MMX_WR13]
+	wldrd	wR14, [r0, #MMX_WR14]
+	wldrd	wR15, [r0, #MMX_WR15]
+
+	@ Load wCx
+	wldrw	wCSSF, [r0, #MMX_WCSSF]
+	wldrw	wCASF, [r0, #MMX_WCASF]
+	wldrw	wCGR0, [r0, #MMX_WCGR0]
+	wldrw	wCGR1, [r0, #MMX_WCGR1]
+	wldrw	wCGR2, [r0, #MMX_WCGR2]
+	wldrw	wCGR3, [r0, #MMX_WCGR3]
+
+	@ clear CUP/MUP (only if r1 != 0)
+	teq	r1, #0
+	mov 	r2, #0
+	moveq	pc, lr
+	tmcr	wCon, r2
+	mov	pc, lr
+
+/*
+ * Back up Concan regs to save area and disable access to them
+ * (mainly for gdb or sleep mode usage)
+ *
+ * r0 = struct thread_info pointer of target task or NULL for any
+ */
+
+ENTRY(iwmmxt_task_disable)
+
+	stmfd	sp!, {r4, lr}
+
+	mrs	ip, cpsr
+	orr	r2, ip, #PSR_I_BIT		@ disable interrupts
+	msr	cpsr_c, r2
+
+	ldr	r3, =concan_owner
+	add	r2, r0, #TI_IWMMXT_STATE	@ get task Concan save area
+	ldr	r1, [r3]			@ get current Concan owner
+	teq	r1, #0				@ any current owner?
+	beq	1f				@ no: quit
+	teq	r0, #0				@ any owner?
+	teqne	r1, r2				@ or specified one?
+	bne	1f				@ no: quit
+
+	mrc	p15, 0, r4, c15, c1, 0
+	orr	r4, r4, #0x3			@ enable access to CP0 and CP1
+	mcr	p15, 0, r4, c15, c1, 0
+	mov	r0, #0				@ nothing to load
+	str	r0, [r3]			@ no more current owner
+	mrc	p15, 0, r2, c2, c0, 0
+	mov	r2, r2				@ cpwait
+	bl	concan_save
+
+	bic	r4, r4, #0x3			@ disable access to CP0 and CP1
+	mcr	p15, 0, r4, c15, c1, 0
+	mrc	p15, 0, r2, c2, c0, 0
+	mov	r2, r2				@ cpwait
+
+1:	msr	cpsr_c, ip			@ restore interrupt mode
+	ldmfd	sp!, {r4, pc}
+
+/*
+ * Copy Concan state to given memory address
+ *
+ * r0 = struct thread_info pointer of target task
+ * r1 = memory address where to store Concan state
+ *
+ * this is called mainly in the creation of signal stack frames
+ */
+
+ENTRY(iwmmxt_task_copy)
+
+	mrs	ip, cpsr
+	orr	r2, ip, #PSR_I_BIT		@ disable interrupts
+	msr	cpsr_c, r2
+
+	ldr	r3, =concan_owner
+	add	r2, r0, #TI_IWMMXT_STATE	@ get task Concan save area
+	ldr	r3, [r3]			@ get current Concan owner
+	teq	r2, r3				@ does this task own it...
+	beq	1f
+
+	@ current Concan values are in the task save area
+	msr	cpsr_c, ip			@ restore interrupt mode
+	mov	r0, r1
+	mov	r1, r2
+	mov	r2, #MMX_SIZE
+	b	memcpy
+
+1:	@ this task owns Concan regs -- grab a copy from there
+	mov	r0, #0				@ nothing to load
+	mov	r2, #3				@ save all regs
+	mov	r3, lr				@ preserve return address
+	bl	concan_dump
+	msr	cpsr_c, ip			@ restore interrupt mode
+	mov	pc, r3
+
+/*
+ * Restore Concan state from given memory address
+ *
+ * r0 = struct thread_info pointer of target task
+ * r1 = memory address where to get Concan state from
+ *
+ * this is used to restore Concan state when unwinding a signal stack frame
+ */
+
+ENTRY(iwmmxt_task_restore)
+
+	mrs	ip, cpsr
+	orr	r2, ip, #PSR_I_BIT		@ disable interrupts
+	msr	cpsr_c, r2
+
+	ldr	r3, =concan_owner
+	add	r2, r0, #TI_IWMMXT_STATE	@ get task Concan save area
+	ldr	r3, [r3]			@ get current Concan owner
+	bic	r2, r2, #0x7			@ 64-bit alignment
+	teq	r2, r3				@ does this task own it...
+	beq	1f
+
+	@ this task doesn't own Concan regs -- use its save area
+	msr	cpsr_c, ip			@ restore interrupt mode
+	mov	r0, r2
+	mov	r2, #MMX_SIZE
+	b	memcpy
+
+1:	@ this task owns Concan regs -- load them directly
+	mov	r0, r1
+	mov	r1, #0				@ don't clear CUP/MUP
+	mov	r3, lr				@ preserve return address
+	bl	concan_load
+	msr	cpsr_c, ip			@ restore interrupt mode
+	mov	pc, r3
+
+/*
+ * Concan handling on task switch
+ *
+ * r0 = previous task_struct pointer (must be preserved)
+ * r1 = previous thread_info pointer
+ * r2 = next thread_info.cpu_domain pointer (must be preserved)
+ *
+ * Called only from __switch_to with task preemption disabled.
+ * No need to care about preserving r4 and above.
+ */
+ENTRY(iwmmxt_task_switch)
+
+	mrc	p15, 0, r4, c15, c1, 0
+	tst	r4, #0x3			@ CP0 and CP1 accessible?
+	bne	1f				@ yes: block them for next task
+
+	ldr	r5, =concan_owner
+	add	r6, r2, #(TI_IWMMXT_STATE - TI_CPU_DOMAIN) @ get next task Concan save area
+	ldr	r5, [r5]			@ get current Concan owner
+	teq	r5, r6				@ next task owns it?
+	movne	pc, lr				@ no: leave Concan disabled
+
+1:	eor	r4, r4, #3			@ flip Concan access
+	mcr	p15, 0, r4, c15, c1, 0
+
+	mrc	p15, 0, r4, c2, c0, 0
+	sub	pc, lr, r4, lsr #32		@ cpwait and return
+
+/*
+ * Remove Concan ownership of given task
+ *
+ * r0 = struct thread_info pointer
+ */
+ENTRY(iwmmxt_task_release)
+
+	mrs	r2, cpsr
+	orr	ip, r2, #PSR_I_BIT		@ disable interrupts
+	msr	cpsr_c, ip
+	ldr	r3, =concan_owner
+	add	r0, r0, #TI_IWMMXT_STATE	@ get task Concan save area
+	ldr	r1, [r3]			@ get current Concan owner
+	eors	r0, r0, r1			@ if equal...
+	streq	r0, [r3]			@ then clear ownership
+	msr	cpsr_c, r2			@ restore interrupts
+	mov	pc, lr
+
+	.data
+concan_owner:
+	.word	0
+
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
new file mode 100644
index 000000000000..1a85cfdad5ac
--- /dev/null
+++ b/arch/arm/kernel/module.c
@@ -0,0 +1,152 @@
+/*
+ *  linux/arch/arm/kernel/module.c
+ *
+ *  Copyright (C) 2002 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Module allocation method suggested by Andi Kleen.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+
+#include <asm/pgtable.h>
+
+#ifdef CONFIG_XIP_KERNEL
+/*
+ * The XIP kernel text is mapped in the module area for modules and
+ * some other stuff to work without any indirect relocations.
+ * MODULE_START is redefined here and not in asm/memory.h to avoid
+ * recompiling the whole kernel when CONFIG_XIP_KERNEL is turned on/off.
+ */
+extern void _etext;
+#undef MODULE_START
+#define MODULE_START	(((unsigned long)&_etext + ~PGDIR_MASK) & PGDIR_MASK)
+#endif
+
+void *module_alloc(unsigned long size)
+{
+	struct vm_struct *area;
+
+	size = PAGE_ALIGN(size);
+	if (!size)
+		return NULL;
+
+	area = __get_vm_area(size, VM_ALLOC, MODULE_START, MODULE_END);
+	if (!area)
+		return NULL;
+
+	return __vmalloc_area(area, GFP_KERNEL, PAGE_KERNEL);
+}
+
+void module_free(struct module *module, void *region)
+{
+	vfree(region);
+}
+
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+			      Elf_Shdr *sechdrs,
+			      char *secstrings,
+			      struct module *mod)
+{
+	return 0;
+}
+
+int
+apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
+	       unsigned int relindex, struct module *module)
+{
+	Elf32_Shdr *symsec = sechdrs + symindex;
+	Elf32_Shdr *relsec = sechdrs + relindex;
+	Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
+	Elf32_Rel *rel = (void *)relsec->sh_addr;
+	unsigned int i;
+
+	for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
+		unsigned long loc;
+		Elf32_Sym *sym;
+		s32 offset;
+
+		offset = ELF32_R_SYM(rel->r_info);
+		if (offset < 0 || offset > (symsec->sh_size / sizeof(Elf32_Sym))) {
+			printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
+				module->name, relindex, i);
+			return -ENOEXEC;
+		}
+
+		sym = ((Elf32_Sym *)symsec->sh_addr) + offset;
+
+		if (rel->r_offset < 0 || rel->r_offset > dstsec->sh_size - sizeof(u32)) {
+			printk(KERN_ERR "%s: out of bounds relocation, "
+				"section %d reloc %d offset %d size %d\n",
+				module->name, relindex, i, rel->r_offset,
+				dstsec->sh_size);
+			return -ENOEXEC;
+		}
+
+		loc = dstsec->sh_addr + rel->r_offset;
+
+		switch (ELF32_R_TYPE(rel->r_info)) {
+		case R_ARM_ABS32:
+			*(u32 *)loc += sym->st_value;
+			break;
+
+		case R_ARM_PC24:
+			offset = (*(u32 *)loc & 0x00ffffff) << 2;
+			if (offset & 0x02000000)
+				offset -= 0x04000000;
+
+			offset += sym->st_value - loc;
+			if (offset & 3 ||
+			    offset <= (s32)0xfc000000 ||
+			    offset >= (s32)0x04000000) {
+				printk(KERN_ERR
+				       "%s: relocation out of range, section "
+				       "%d reloc %d sym '%s'\n", module->name,
+				       relindex, i, strtab + sym->st_name);
+				return -ENOEXEC;
+			}
+
+			offset >>= 2;
+
+			*(u32 *)loc &= 0xff000000;
+			*(u32 *)loc |= offset & 0x00ffffff;
+			break;
+
+		default:
+			printk(KERN_ERR "%s: unknown relocation: %u\n",
+			       module->name, ELF32_R_TYPE(rel->r_info));
+			return -ENOEXEC;
+		}
+	}
+	return 0;
+}
+
+int
+apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
+		   unsigned int symindex, unsigned int relsec, struct module *module)
+{
+	printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n",
+	       module->name);
+	return -ENOEXEC;
+}
+
+int
+module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
+		struct module *module)
+{
+	return 0;
+}
+
+void
+module_arch_cleanup(struct module *mod)
+{
+}
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
new file mode 100644
index 000000000000..dbd8ca89b385
--- /dev/null
+++ b/arch/arm/kernel/process.c
@@ -0,0 +1,460 @@
+/*
+ *  linux/arch/arm/kernel/process.c
+ *
+ *  Copyright (C) 1996-2000 Russell King - Converted to ARM.
+ *  Original Copyright (C) 1995  Linus Torvalds
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <stdarg.h>
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/delay.h>
+#include <linux/reboot.h>
+#include <linux/interrupt.h>
+#include <linux/kallsyms.h>
+#include <linux/init.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/leds.h>
+#include <asm/processor.h>
+#include <asm/uaccess.h>
+
+extern const char *processor_modes[];
+extern void setup_mm_for_reboot(char mode);
+
+static volatile int hlt_counter;
+
+#include <asm/arch/system.h>
+
+void disable_hlt(void)
+{
+	hlt_counter++;
+}
+
+EXPORT_SYMBOL(disable_hlt);
+
+void enable_hlt(void)
+{
+	hlt_counter--;
+}
+
+EXPORT_SYMBOL(enable_hlt);
+
+static int __init nohlt_setup(char *__unused)
+{
+	hlt_counter = 1;
+	return 1;
+}
+
+static int __init hlt_setup(char *__unused)
+{
+	hlt_counter = 0;
+	return 1;
+}
+
+__setup("nohlt", nohlt_setup);
+__setup("hlt", hlt_setup);
+
+/*
+ * The following aren't currently used.
+ */
+void (*pm_idle)(void);
+EXPORT_SYMBOL(pm_idle);
+
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+/*
+ * This is our default idle handler.  We need to disable
+ * interrupts here to ensure we don't miss a wakeup call.
+ */
+void default_idle(void)
+{
+	local_irq_disable();
+	if (!need_resched() && !hlt_counter)
+		arch_idle();
+	local_irq_enable();
+}
+
+/*
+ * The idle thread.  We try to conserve power, while trying to keep
+ * overall latency low.  The architecture specific idle is passed
+ * a value to indicate the level of "idleness" of the system.
+ */
+void cpu_idle(void)
+{
+	local_fiq_enable();
+
+	/* endless idle loop with no priority at all */
+	while (1) {
+		void (*idle)(void) = pm_idle;
+		if (!idle)
+			idle = default_idle;
+		preempt_disable();
+		leds_event(led_idle_start);
+		while (!need_resched())
+			idle();
+		leds_event(led_idle_end);
+		preempt_enable();
+		schedule();
+	}
+}
+
+static char reboot_mode = 'h';
+
+int __init reboot_setup(char *str)
+{
+	reboot_mode = str[0];
+	return 1;
+}
+
+__setup("reboot=", reboot_setup);
+
+void machine_halt(void)
+{
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void machine_power_off(void)
+{
+	if (pm_power_off)
+		pm_power_off();
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+void machine_restart(char * __unused)
+{
+	/*
+	 * Clean and disable cache, and turn off interrupts
+	 */
+	cpu_proc_fin();
+
+	/*
+	 * Tell the mm system that we are going to reboot -
+	 * we may need it to insert some 1:1 mappings so that
+	 * soft boot works.
+	 */
+	setup_mm_for_reboot(reboot_mode);
+
+	/*
+	 * Now call the architecture specific reboot code.
+	 */
+	arch_reset(reboot_mode);
+
+	/*
+	 * Whoops - the architecture was unable to reboot.
+	 * Tell the user!
+	 */
+	mdelay(1000);
+	printk("Reboot failed -- System halted\n");
+	while (1);
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void show_regs(struct pt_regs * regs)
+{
+	unsigned long flags;
+
+	flags = condition_codes(regs);
+
+	print_symbol("PC is at %s\n", instruction_pointer(regs));
+	print_symbol("LR is at %s\n", regs->ARM_lr);
+	printk("pc : [<%08lx>]    lr : [<%08lx>]    %s\n"
+	       "sp : %08lx  ip : %08lx  fp : %08lx\n",
+		instruction_pointer(regs),
+		regs->ARM_lr, print_tainted(), regs->ARM_sp,
+		regs->ARM_ip, regs->ARM_fp);
+	printk("r10: %08lx  r9 : %08lx  r8 : %08lx\n",
+		regs->ARM_r10, regs->ARM_r9,
+		regs->ARM_r8);
+	printk("r7 : %08lx  r6 : %08lx  r5 : %08lx  r4 : %08lx\n",
+		regs->ARM_r7, regs->ARM_r6,
+		regs->ARM_r5, regs->ARM_r4);
+	printk("r3 : %08lx  r2 : %08lx  r1 : %08lx  r0 : %08lx\n",
+		regs->ARM_r3, regs->ARM_r2,
+		regs->ARM_r1, regs->ARM_r0);
+	printk("Flags: %c%c%c%c",
+		flags & PSR_N_BIT ? 'N' : 'n',
+		flags & PSR_Z_BIT ? 'Z' : 'z',
+		flags & PSR_C_BIT ? 'C' : 'c',
+		flags & PSR_V_BIT ? 'V' : 'v');
+	printk("  IRQs o%s  FIQs o%s  Mode %s%s  Segment %s\n",
+		interrupts_enabled(regs) ? "n" : "ff",
+		fast_interrupts_enabled(regs) ? "n" : "ff",
+		processor_modes[processor_mode(regs)],
+		thumb_mode(regs) ? " (T)" : "",
+		get_fs() == get_ds() ? "kernel" : "user");
+	{
+		unsigned int ctrl, transbase, dac;
+		  __asm__ (
+		"	mrc p15, 0, %0, c1, c0\n"
+		"	mrc p15, 0, %1, c2, c0\n"
+		"	mrc p15, 0, %2, c3, c0\n"
+		: "=r" (ctrl), "=r" (transbase), "=r" (dac));
+		printk("Control: %04X  Table: %08X  DAC: %08X\n",
+		  	ctrl, transbase, dac);
+	}
+}
+
+void show_fpregs(struct user_fp *regs)
+{
+	int i;
+
+	for (i = 0; i < 8; i++) {
+		unsigned long *p;
+		char type;
+
+		p = (unsigned long *)(regs->fpregs + i);
+
+		switch (regs->ftype[i]) {
+			case 1: type = 'f'; break;
+			case 2: type = 'd'; break;
+			case 3: type = 'e'; break;
+			default: type = '?'; break;
+		}
+		if (regs->init_flag)
+			type = '?';
+
+		printk("  f%d(%c): %08lx %08lx %08lx%c",
+			i, type, p[0], p[1], p[2], i & 1 ? '\n' : ' ');
+	}
+			
+
+	printk("FPSR: %08lx FPCR: %08lx\n",
+		(unsigned long)regs->fpsr,
+		(unsigned long)regs->fpcr);
+}
+
+/*
+ * Task structure and kernel stack allocation.
+ */
+static unsigned long *thread_info_head;
+static unsigned int nr_thread_info;
+
+#define EXTRA_TASK_STRUCT	4
+#define ll_alloc_task_struct() ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
+#define ll_free_task_struct(p) free_pages((unsigned long)(p),1)
+
+struct thread_info *alloc_thread_info(struct task_struct *task)
+{
+	struct thread_info *thread = NULL;
+
+	if (EXTRA_TASK_STRUCT) {
+		unsigned long *p = thread_info_head;
+
+		if (p) {
+			thread_info_head = (unsigned long *)p[0];
+			nr_thread_info -= 1;
+		}
+		thread = (struct thread_info *)p;
+	}
+
+	if (!thread)
+		thread = ll_alloc_task_struct();
+
+#ifdef CONFIG_MAGIC_SYSRQ
+	/*
+	 * The stack must be cleared if you want SYSRQ-T to
+	 * give sensible stack usage information
+	 */
+	if (thread) {
+		char *p = (char *)thread;
+		memzero(p+KERNEL_STACK_SIZE, KERNEL_STACK_SIZE);
+	}
+#endif
+	return thread;
+}
+
+void free_thread_info(struct thread_info *thread)
+{
+	if (EXTRA_TASK_STRUCT && nr_thread_info < EXTRA_TASK_STRUCT) {
+		unsigned long *p = (unsigned long *)thread;
+		p[0] = (unsigned long)thread_info_head;
+		thread_info_head = p;
+		nr_thread_info += 1;
+	} else
+		ll_free_task_struct(thread);
+}
+
+/*
+ * Free current thread data structures etc..
+ */
+void exit_thread(void)
+{
+}
+
+static void default_fp_init(union fp_state *fp)
+{
+	memset(fp, 0, sizeof(union fp_state));
+}
+
+void (*fp_init)(union fp_state *) = default_fp_init;
+EXPORT_SYMBOL(fp_init);
+
+void flush_thread(void)
+{
+	struct thread_info *thread = current_thread_info();
+	struct task_struct *tsk = current;
+
+	memset(thread->used_cp, 0, sizeof(thread->used_cp));
+	memset(&tsk->thread.debug, 0, sizeof(struct debug_info));
+#if defined(CONFIG_IWMMXT)
+	iwmmxt_task_release(thread);
+#endif
+	fp_init(&thread->fpstate);
+#if defined(CONFIG_VFP)
+	vfp_flush_thread(&thread->vfpstate);
+#endif
+}
+
+void release_thread(struct task_struct *dead_task)
+{
+#if defined(CONFIG_VFP)
+	vfp_release_thread(&dead_task->thread_info->vfpstate);
+#endif
+#if defined(CONFIG_IWMMXT)
+	iwmmxt_task_release(dead_task->thread_info);
+#endif
+}
+
+asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
+
+int
+copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start,
+	    unsigned long stk_sz, struct task_struct *p, struct pt_regs *regs)
+{
+	struct thread_info *thread = p->thread_info;
+	struct pt_regs *childregs;
+
+	childregs = ((struct pt_regs *)((unsigned long)thread + THREAD_SIZE - 8)) - 1;
+	*childregs = *regs;
+	childregs->ARM_r0 = 0;
+	childregs->ARM_sp = stack_start;
+
+	memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save));
+	thread->cpu_context.sp = (unsigned long)childregs;
+	thread->cpu_context.pc = (unsigned long)ret_from_fork;
+
+	if (clone_flags & CLONE_SETTLS)
+		thread->tp_value = regs->ARM_r3;
+
+	return 0;
+}
+
+/*
+ * fill in the fpe structure for a core dump...
+ */
+int dump_fpu (struct pt_regs *regs, struct user_fp *fp)
+{
+	struct thread_info *thread = current_thread_info();
+	int used_math = thread->used_cp[1] | thread->used_cp[2];
+
+	if (used_math)
+		memcpy(fp, &thread->fpstate.soft, sizeof (*fp));
+
+	return used_math != 0;
+}
+EXPORT_SYMBOL(dump_fpu);
+
+/*
+ * fill in the user structure for a core dump..
+ */
+void dump_thread(struct pt_regs * regs, struct user * dump)
+{
+	struct task_struct *tsk = current;
+
+	dump->magic = CMAGIC;
+	dump->start_code = tsk->mm->start_code;
+	dump->start_stack = regs->ARM_sp & ~(PAGE_SIZE - 1);
+
+	dump->u_tsize = (tsk->mm->end_code - tsk->mm->start_code) >> PAGE_SHIFT;
+	dump->u_dsize = (tsk->mm->brk - tsk->mm->start_data + PAGE_SIZE - 1) >> PAGE_SHIFT;
+	dump->u_ssize = 0;
+
+	dump->u_debugreg[0] = tsk->thread.debug.bp[0].address;
+	dump->u_debugreg[1] = tsk->thread.debug.bp[1].address;
+	dump->u_debugreg[2] = tsk->thread.debug.bp[0].insn.arm;
+	dump->u_debugreg[3] = tsk->thread.debug.bp[1].insn.arm;
+	dump->u_debugreg[4] = tsk->thread.debug.nsaved;
+
+	if (dump->start_stack < 0x04000000)
+		dump->u_ssize = (0x04000000 - dump->start_stack) >> PAGE_SHIFT;
+
+	dump->regs = *regs;
+	dump->u_fpvalid = dump_fpu (regs, &dump->u_fp);
+}
+EXPORT_SYMBOL(dump_thread);
+
+/*
+ * Shuffle the argument into the correct register before calling the
+ * thread function.  r1 is the thread argument, r2 is the pointer to
+ * the thread function, and r3 points to the exit function.
+ */
+extern void kernel_thread_helper(void);
+asm(	".section .text\n"
+"	.align\n"
+"	.type	kernel_thread_helper, #function\n"
+"kernel_thread_helper:\n"
+"	mov	r0, r1\n"
+"	mov	lr, r3\n"
+"	mov	pc, r2\n"
+"	.size	kernel_thread_helper, . - kernel_thread_helper\n"
+"	.previous");
+
+/*
+ * Create a kernel thread.
+ */
+pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
+{
+	struct pt_regs regs;
+
+	memset(&regs, 0, sizeof(regs));
+
+	regs.ARM_r1 = (unsigned long)arg;
+	regs.ARM_r2 = (unsigned long)fn;
+	regs.ARM_r3 = (unsigned long)do_exit;
+	regs.ARM_pc = (unsigned long)kernel_thread_helper;
+	regs.ARM_cpsr = SVC_MODE;
+
+	return do_fork(flags|CLONE_VM|CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
+}
+EXPORT_SYMBOL(kernel_thread);
+
+unsigned long get_wchan(struct task_struct *p)
+{
+	unsigned long fp, lr;
+	unsigned long stack_page;
+	int count = 0;
+	if (!p || p == current || p->state == TASK_RUNNING)
+		return 0;
+
+	stack_page = 4096 + (unsigned long)p->thread_info;
+	fp = thread_saved_fp(p);
+	do {
+		if (fp < stack_page || fp > 4092+stack_page)
+			return 0;
+		lr = pc_pointer (((unsigned long *)fp)[-1]);
+		if (!in_sched_functions(lr))
+			return lr;
+		fp = *(unsigned long *) (fp - 12);
+	} while (count ++ < 16);
+	return 0;
+}
+EXPORT_SYMBOL(get_wchan);
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
new file mode 100644
index 000000000000..efd7a341614b
--- /dev/null
+++ b/arch/arm/kernel/ptrace.c
@@ -0,0 +1,861 @@
+/*
+ *  linux/arch/arm/kernel/ptrace.c
+ *
+ *  By Ross Biro 1/23/92
+ * edited by Linus Torvalds
+ * ARM modifications Copyright (C) 2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/security.h>
+#include <linux/init.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/traps.h>
+
+#include "ptrace.h"
+
+#define REG_PC	15
+#define REG_PSR	16
+/*
+ * does not yet catch signals sent when the child dies.
+ * in exit.c or in signal.c.
+ */
+
+#if 0
+/*
+ * Breakpoint SWI instruction: SWI &9F0001
+ */
+#define BREAKINST_ARM	0xef9f0001
+#define BREAKINST_THUMB	0xdf00		/* fill this in later */
+#else
+/*
+ * New breakpoints - use an undefined instruction.  The ARM architecture
+ * reference manual guarantees that the following instruction space
+ * will produce an undefined instruction exception on all CPUs:
+ *
+ *  ARM:   xxxx 0111 1111 xxxx xxxx xxxx 1111 xxxx
+ *  Thumb: 1101 1110 xxxx xxxx
+ */
+#define BREAKINST_ARM	0xe7f001f0
+#define BREAKINST_THUMB	0xde01
+#endif
+
+/*
+ * Get the address of the live pt_regs for the specified task.
+ * These are saved onto the top kernel stack when the process
+ * is not running.
+ *
+ * Note: if a user thread is execve'd from kernel space, the
+ * kernel stack will not be empty on entry to the kernel, so
+ * ptracing these tasks will fail.
+ */
+static inline struct pt_regs *
+get_user_regs(struct task_struct *task)
+{
+	return (struct pt_regs *)
+		((unsigned long)task->thread_info + THREAD_SIZE -
+				 8 - sizeof(struct pt_regs));
+}
+
+/*
+ * this routine will get a word off of the processes privileged stack.
+ * the offset is how far from the base addr as stored in the THREAD.
+ * this routine assumes that all the privileged stacks are in our
+ * data space.
+ */
+static inline long get_user_reg(struct task_struct *task, int offset)
+{
+	return get_user_regs(task)->uregs[offset];
+}
+
+/*
+ * this routine will put a word on the processes privileged stack.
+ * the offset is how far from the base addr as stored in the THREAD.
+ * this routine assumes that all the privileged stacks are in our
+ * data space.
+ */
+static inline int
+put_user_reg(struct task_struct *task, int offset, long data)
+{
+	struct pt_regs newregs, *regs = get_user_regs(task);
+	int ret = -EINVAL;
+
+	newregs = *regs;
+	newregs.uregs[offset] = data;
+
+	if (valid_user_regs(&newregs)) {
+		regs->uregs[offset] = data;
+		ret = 0;
+	}
+
+	return ret;
+}
+
+static inline int
+read_u32(struct task_struct *task, unsigned long addr, u32 *res)
+{
+	int ret;
+
+	ret = access_process_vm(task, addr, res, sizeof(*res), 0);
+
+	return ret == sizeof(*res) ? 0 : -EIO;
+}
+
+static inline int
+read_instr(struct task_struct *task, unsigned long addr, u32 *res)
+{
+	int ret;
+
+	if (addr & 1) {
+		u16 val;
+		ret = access_process_vm(task, addr & ~1, &val, sizeof(val), 0);
+		ret = ret == sizeof(val) ? 0 : -EIO;
+		*res = val;
+	} else {
+		u32 val;
+		ret = access_process_vm(task, addr & ~3, &val, sizeof(val), 0);
+		ret = ret == sizeof(val) ? 0 : -EIO;
+		*res = val;
+	}
+	return ret;
+}
+
+/*
+ * Get value of register `rn' (in the instruction)
+ */
+static unsigned long
+ptrace_getrn(struct task_struct *child, unsigned long insn)
+{
+	unsigned int reg = (insn >> 16) & 15;
+	unsigned long val;
+
+	val = get_user_reg(child, reg);
+	if (reg == 15)
+		val = pc_pointer(val + 8);
+
+	return val;
+}
+
+/*
+ * Get value of operand 2 (in an ALU instruction)
+ */
+static unsigned long
+ptrace_getaluop2(struct task_struct *child, unsigned long insn)
+{
+	unsigned long val;
+	int shift;
+	int type;
+
+	if (insn & 1 << 25) {
+		val = insn & 255;
+		shift = (insn >> 8) & 15;
+		type = 3;
+	} else {
+		val = get_user_reg (child, insn & 15);
+
+		if (insn & (1 << 4))
+			shift = (int)get_user_reg (child, (insn >> 8) & 15);
+		else
+			shift = (insn >> 7) & 31;
+
+		type = (insn >> 5) & 3;
+	}
+
+	switch (type) {
+	case 0:	val <<= shift;	break;
+	case 1:	val >>= shift;	break;
+	case 2:
+		val = (((signed long)val) >> shift);
+		break;
+	case 3:
+ 		val = (val >> shift) | (val << (32 - shift));
+		break;
+	}
+	return val;
+}
+
+/*
+ * Get value of operand 2 (in a LDR instruction)
+ */
+static unsigned long
+ptrace_getldrop2(struct task_struct *child, unsigned long insn)
+{
+	unsigned long val;
+	int shift;
+	int type;
+
+	val = get_user_reg(child, insn & 15);
+	shift = (insn >> 7) & 31;
+	type = (insn >> 5) & 3;
+
+	switch (type) {
+	case 0:	val <<= shift;	break;
+	case 1:	val >>= shift;	break;
+	case 2:
+		val = (((signed long)val) >> shift);
+		break;
+	case 3:
+ 		val = (val >> shift) | (val << (32 - shift));
+		break;
+	}
+	return val;
+}
+
+#define OP_MASK	0x01e00000
+#define OP_AND	0x00000000
+#define OP_EOR	0x00200000
+#define OP_SUB	0x00400000
+#define OP_RSB	0x00600000
+#define OP_ADD	0x00800000
+#define OP_ADC	0x00a00000
+#define OP_SBC	0x00c00000
+#define OP_RSC	0x00e00000
+#define OP_ORR	0x01800000
+#define OP_MOV	0x01a00000
+#define OP_BIC	0x01c00000
+#define OP_MVN	0x01e00000
+
+static unsigned long
+get_branch_address(struct task_struct *child, unsigned long pc, unsigned long insn)
+{
+	u32 alt = 0;
+
+	switch (insn & 0x0e000000) {
+	case 0x00000000:
+	case 0x02000000: {
+		/*
+		 * data processing
+		 */
+		long aluop1, aluop2, ccbit;
+
+		if ((insn & 0xf000) != 0xf000)
+			break;
+
+		aluop1 = ptrace_getrn(child, insn);
+		aluop2 = ptrace_getaluop2(child, insn);
+		ccbit  = get_user_reg(child, REG_PSR) & PSR_C_BIT ? 1 : 0;
+
+		switch (insn & OP_MASK) {
+		case OP_AND: alt = aluop1 & aluop2;		break;
+		case OP_EOR: alt = aluop1 ^ aluop2;		break;
+		case OP_SUB: alt = aluop1 - aluop2;		break;
+		case OP_RSB: alt = aluop2 - aluop1;		break;
+		case OP_ADD: alt = aluop1 + aluop2;		break;
+		case OP_ADC: alt = aluop1 + aluop2 + ccbit;	break;
+		case OP_SBC: alt = aluop1 - aluop2 + ccbit;	break;
+		case OP_RSC: alt = aluop2 - aluop1 + ccbit;	break;
+		case OP_ORR: alt = aluop1 | aluop2;		break;
+		case OP_MOV: alt = aluop2;			break;
+		case OP_BIC: alt = aluop1 & ~aluop2;		break;
+		case OP_MVN: alt = ~aluop2;			break;
+		}
+		break;
+	}
+
+	case 0x04000000:
+	case 0x06000000:
+		/*
+		 * ldr
+		 */
+		if ((insn & 0x0010f000) == 0x0010f000) {
+			unsigned long base;
+
+			base = ptrace_getrn(child, insn);
+			if (insn & 1 << 24) {
+				long aluop2;
+
+				if (insn & 0x02000000)
+					aluop2 = ptrace_getldrop2(child, insn);
+				else
+					aluop2 = insn & 0xfff;
+
+				if (insn & 1 << 23)
+					base += aluop2;
+				else
+					base -= aluop2;
+			}
+			if (read_u32(child, base, &alt) == 0)
+				alt = pc_pointer(alt);
+		}
+		break;
+
+	case 0x08000000:
+		/*
+		 * ldm
+		 */
+		if ((insn & 0x00108000) == 0x00108000) {
+			unsigned long base;
+			unsigned int nr_regs;
+
+			if (insn & (1 << 23)) {
+				nr_regs = hweight16(insn & 65535) << 2;
+
+				if (!(insn & (1 << 24)))
+					nr_regs -= 4;
+			} else {
+				if (insn & (1 << 24))
+					nr_regs = -4;
+				else
+					nr_regs = 0;
+			}
+
+			base = ptrace_getrn(child, insn);
+
+			if (read_u32(child, base + nr_regs, &alt) == 0)
+				alt = pc_pointer(alt);
+			break;
+		}
+		break;
+
+	case 0x0a000000: {
+		/*
+		 * bl or b
+		 */
+		signed long displ;
+		/* It's a branch/branch link: instead of trying to
+		 * figure out whether the branch will be taken or not,
+		 * we'll put a breakpoint at both locations.  This is
+		 * simpler, more reliable, and probably not a whole lot
+		 * slower than the alternative approach of emulating the
+		 * branch.
+		 */
+		displ = (insn & 0x00ffffff) << 8;
+		displ = (displ >> 6) + 8;
+		if (displ != 0 && displ != 4)
+			alt = pc + displ;
+	    }
+	    break;
+	}
+
+	return alt;
+}
+
+static int
+swap_insn(struct task_struct *task, unsigned long addr,
+	  void *old_insn, void *new_insn, int size)
+{
+	int ret;
+
+	ret = access_process_vm(task, addr, old_insn, size, 0);
+	if (ret == size)
+		ret = access_process_vm(task, addr, new_insn, size, 1);
+	return ret;
+}
+
+static void
+add_breakpoint(struct task_struct *task, struct debug_info *dbg, unsigned long addr)
+{
+	int nr = dbg->nsaved;
+
+	if (nr < 2) {
+		u32 new_insn = BREAKINST_ARM;
+		int res;
+
+		res = swap_insn(task, addr, &dbg->bp[nr].insn, &new_insn, 4);
+
+		if (res == 4) {
+			dbg->bp[nr].address = addr;
+			dbg->nsaved += 1;
+		}
+	} else
+		printk(KERN_ERR "ptrace: too many breakpoints\n");
+}
+
+/*
+ * Clear one breakpoint in the user program.  We copy what the hardware
+ * does and use bit 0 of the address to indicate whether this is a Thumb
+ * breakpoint or an ARM breakpoint.
+ */
+static void clear_breakpoint(struct task_struct *task, struct debug_entry *bp)
+{
+	unsigned long addr = bp->address;
+	union debug_insn old_insn;
+	int ret;
+
+	if (addr & 1) {
+		ret = swap_insn(task, addr & ~1, &old_insn.thumb,
+				&bp->insn.thumb, 2);
+
+		if (ret != 2 || old_insn.thumb != BREAKINST_THUMB)
+			printk(KERN_ERR "%s:%d: corrupted Thumb breakpoint at "
+				"0x%08lx (0x%04x)\n", task->comm, task->pid,
+				addr, old_insn.thumb);
+	} else {
+		ret = swap_insn(task, addr & ~3, &old_insn.arm,
+				&bp->insn.arm, 4);
+
+		if (ret != 4 || old_insn.arm != BREAKINST_ARM)
+			printk(KERN_ERR "%s:%d: corrupted ARM breakpoint at "
+				"0x%08lx (0x%08x)\n", task->comm, task->pid,
+				addr, old_insn.arm);
+	}
+}
+
+void ptrace_set_bpt(struct task_struct *child)
+{
+	struct pt_regs *regs;
+	unsigned long pc;
+	u32 insn;
+	int res;
+
+	regs = get_user_regs(child);
+	pc = instruction_pointer(regs);
+
+	if (thumb_mode(regs)) {
+		printk(KERN_WARNING "ptrace: can't handle thumb mode\n");
+		return;
+	}
+
+	res = read_instr(child, pc, &insn);
+	if (!res) {
+		struct debug_info *dbg = &child->thread.debug;
+		unsigned long alt;
+
+		dbg->nsaved = 0;
+
+		alt = get_branch_address(child, pc, insn);
+		if (alt)
+			add_breakpoint(child, dbg, alt);
+
+		/*
+		 * Note that we ignore the result of setting the above
+		 * breakpoint since it may fail.  When it does, this is
+		 * not so much an error, but a forewarning that we may
+		 * be receiving a prefetch abort shortly.
+		 *
+		 * If we don't set this breakpoint here, then we can
+		 * lose control of the thread during single stepping.
+		 */
+		if (!alt || predicate(insn) != PREDICATE_ALWAYS)
+			add_breakpoint(child, dbg, pc + 4);
+	}
+}
+
+/*
+ * Ensure no single-step breakpoint is pending.  Returns non-zero
+ * value if child was being single-stepped.
+ */
+void ptrace_cancel_bpt(struct task_struct *child)
+{
+	int i, nsaved = child->thread.debug.nsaved;
+
+	child->thread.debug.nsaved = 0;
+
+	if (nsaved > 2) {
+		printk("ptrace_cancel_bpt: bogus nsaved: %d!\n", nsaved);
+		nsaved = 2;
+	}
+
+	for (i = 0; i < nsaved; i++)
+		clear_breakpoint(child, &child->thread.debug.bp[i]);
+}
+
+/*
+ * Called by kernel/ptrace.c when detaching..
+ *
+ * Make sure the single step bit is not set.
+ */
+void ptrace_disable(struct task_struct *child)
+{
+	child->ptrace &= ~PT_SINGLESTEP;
+	ptrace_cancel_bpt(child);
+}
+
+/*
+ * Handle hitting a breakpoint.
+ */
+void ptrace_break(struct task_struct *tsk, struct pt_regs *regs)
+{
+	siginfo_t info;
+
+	ptrace_cancel_bpt(tsk);
+
+	info.si_signo = SIGTRAP;
+	info.si_errno = 0;
+	info.si_code  = TRAP_BRKPT;
+	info.si_addr  = (void __user *)instruction_pointer(regs);
+
+	force_sig_info(SIGTRAP, &info, tsk);
+}
+
+static int break_trap(struct pt_regs *regs, unsigned int instr)
+{
+	ptrace_break(current, regs);
+	return 0;
+}
+
+static struct undef_hook arm_break_hook = {
+	.instr_mask	= 0x0fffffff,
+	.instr_val	= 0x07f001f0,
+	.cpsr_mask	= PSR_T_BIT,
+	.cpsr_val	= 0,
+	.fn		= break_trap,
+};
+
+static struct undef_hook thumb_break_hook = {
+	.instr_mask	= 0xffff,
+	.instr_val	= 0xde01,
+	.cpsr_mask	= PSR_T_BIT,
+	.cpsr_val	= PSR_T_BIT,
+	.fn		= break_trap,
+};
+
+static int __init ptrace_break_init(void)
+{
+	register_undef_hook(&arm_break_hook);
+	register_undef_hook(&thumb_break_hook);
+	return 0;
+}
+
+core_initcall(ptrace_break_init);
+
+/*
+ * Read the word at offset "off" into the "struct user".  We
+ * actually access the pt_regs stored on the kernel stack.
+ */
+static int ptrace_read_user(struct task_struct *tsk, unsigned long off,
+			    unsigned long __user *ret)
+{
+	unsigned long tmp;
+
+	if (off & 3 || off >= sizeof(struct user))
+		return -EIO;
+
+	tmp = 0;
+	if (off < sizeof(struct pt_regs))
+		tmp = get_user_reg(tsk, off >> 2);
+
+	return put_user(tmp, ret);
+}
+
+/*
+ * Write the word at offset "off" into "struct user".  We
+ * actually access the pt_regs stored on the kernel stack.
+ */
+static int ptrace_write_user(struct task_struct *tsk, unsigned long off,
+			     unsigned long val)
+{
+	if (off & 3 || off >= sizeof(struct user))
+		return -EIO;
+
+	if (off >= sizeof(struct pt_regs))
+		return 0;
+
+	return put_user_reg(tsk, off >> 2, val);
+}
+
+/*
+ * Get all user integer registers.
+ */
+static int ptrace_getregs(struct task_struct *tsk, void __user *uregs)
+{
+	struct pt_regs *regs = get_user_regs(tsk);
+
+	return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0;
+}
+
+/*
+ * Set all user integer registers.
+ */
+static int ptrace_setregs(struct task_struct *tsk, void __user *uregs)
+{
+	struct pt_regs newregs;
+	int ret;
+
+	ret = -EFAULT;
+	if (copy_from_user(&newregs, uregs, sizeof(struct pt_regs)) == 0) {
+		struct pt_regs *regs = get_user_regs(tsk);
+
+		ret = -EINVAL;
+		if (valid_user_regs(&newregs)) {
+			*regs = newregs;
+			ret = 0;
+		}
+	}
+
+	return ret;
+}
+
+/*
+ * Get the child FPU state.
+ */
+static int ptrace_getfpregs(struct task_struct *tsk, void __user *ufp)
+{
+	return copy_to_user(ufp, &tsk->thread_info->fpstate,
+			    sizeof(struct user_fp)) ? -EFAULT : 0;
+}
+
+/*
+ * Set the child FPU state.
+ */
+static int ptrace_setfpregs(struct task_struct *tsk, void __user *ufp)
+{
+	struct thread_info *thread = tsk->thread_info;
+	thread->used_cp[1] = thread->used_cp[2] = 1;
+	return copy_from_user(&thread->fpstate, ufp,
+			      sizeof(struct user_fp)) ? -EFAULT : 0;
+}
+
+#ifdef CONFIG_IWMMXT
+
+/*
+ * Get the child iWMMXt state.
+ */
+static int ptrace_getwmmxregs(struct task_struct *tsk, void __user *ufp)
+{
+	struct thread_info *thread = tsk->thread_info;
+	void *ptr = &thread->fpstate;
+
+	if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
+		return -ENODATA;
+	iwmmxt_task_disable(thread);  /* force it to ram */
+	/* The iWMMXt state is stored doubleword-aligned.  */
+	if (((long) ptr) & 4)
+		ptr += 4;
+	return copy_to_user(ufp, ptr, 0x98) ? -EFAULT : 0;
+}
+
+/*
+ * Set the child iWMMXt state.
+ */
+static int ptrace_setwmmxregs(struct task_struct *tsk, void __user *ufp)
+{
+	struct thread_info *thread = tsk->thread_info;
+	void *ptr = &thread->fpstate;
+
+	if (!test_ti_thread_flag(thread, TIF_USING_IWMMXT))
+		return -EACCES;
+	iwmmxt_task_release(thread);  /* force a reload */
+	/* The iWMMXt state is stored doubleword-aligned.  */
+	if (((long) ptr) & 4)
+		ptr += 4;
+	return copy_from_user(ptr, ufp, 0x98) ? -EFAULT : 0;
+}
+
+#endif
+
+static int do_ptrace(int request, struct task_struct *child, long addr, long data)
+{
+	unsigned long tmp;
+	int ret;
+
+	switch (request) {
+		/*
+		 * read word at location "addr" in the child process.
+		 */
+		case PTRACE_PEEKTEXT:
+		case PTRACE_PEEKDATA:
+			ret = access_process_vm(child, addr, &tmp,
+						sizeof(unsigned long), 0);
+			if (ret == sizeof(unsigned long))
+				ret = put_user(tmp, (unsigned long __user *) data);
+			else
+				ret = -EIO;
+			break;
+
+		case PTRACE_PEEKUSR:
+			ret = ptrace_read_user(child, addr, (unsigned long __user *)data);
+			break;
+
+		/*
+		 * write the word at location addr.
+		 */
+		case PTRACE_POKETEXT:
+		case PTRACE_POKEDATA:
+			ret = access_process_vm(child, addr, &data,
+						sizeof(unsigned long), 1);
+			if (ret == sizeof(unsigned long))
+				ret = 0;
+			else
+				ret = -EIO;
+			break;
+
+		case PTRACE_POKEUSR:
+			ret = ptrace_write_user(child, addr, data);
+			break;
+
+		/*
+		 * continue/restart and stop at next (return from) syscall
+		 */
+		case PTRACE_SYSCALL:
+		case PTRACE_CONT:
+			ret = -EIO;
+			if ((unsigned long) data > _NSIG)
+				break;
+			if (request == PTRACE_SYSCALL)
+				set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+			else
+				clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+			child->exit_code = data;
+			/* make sure single-step breakpoint is gone. */
+			child->ptrace &= ~PT_SINGLESTEP;
+			ptrace_cancel_bpt(child);
+			wake_up_process(child);
+			ret = 0;
+			break;
+
+		/*
+		 * make the child exit.  Best I can do is send it a sigkill.
+		 * perhaps it should be put in the status that it wants to
+		 * exit.
+		 */
+		case PTRACE_KILL:
+			/* make sure single-step breakpoint is gone. */
+			child->ptrace &= ~PT_SINGLESTEP;
+			ptrace_cancel_bpt(child);
+			if (child->exit_state != EXIT_ZOMBIE) {
+				child->exit_code = SIGKILL;
+				wake_up_process(child);
+			}
+			ret = 0;
+			break;
+
+		/*
+		 * execute single instruction.
+		 */
+		case PTRACE_SINGLESTEP:
+			ret = -EIO;
+			if ((unsigned long) data > _NSIG)
+				break;
+			child->ptrace |= PT_SINGLESTEP;
+			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+			child->exit_code = data;
+			/* give it a chance to run. */
+			wake_up_process(child);
+			ret = 0;
+			break;
+
+		case PTRACE_DETACH:
+			ret = ptrace_detach(child, data);
+			break;
+
+		case PTRACE_GETREGS:
+			ret = ptrace_getregs(child, (void __user *)data);
+			break;
+
+		case PTRACE_SETREGS:
+			ret = ptrace_setregs(child, (void __user *)data);
+			break;
+
+		case PTRACE_GETFPREGS:
+			ret = ptrace_getfpregs(child, (void __user *)data);
+			break;
+		
+		case PTRACE_SETFPREGS:
+			ret = ptrace_setfpregs(child, (void __user *)data);
+			break;
+
+#ifdef CONFIG_IWMMXT
+		case PTRACE_GETWMMXREGS:
+			ret = ptrace_getwmmxregs(child, (void __user *)data);
+			break;
+
+		case PTRACE_SETWMMXREGS:
+			ret = ptrace_setwmmxregs(child, (void __user *)data);
+			break;
+#endif
+
+		case PTRACE_GET_THREAD_AREA:
+			ret = put_user(child->thread_info->tp_value,
+				       (unsigned long __user *) data);
+			break;
+
+		default:
+			ret = ptrace_request(child, request, addr, data);
+			break;
+	}
+
+	return ret;
+}
+
+asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
+{
+	struct task_struct *child;
+	int ret;
+
+	lock_kernel();
+	ret = -EPERM;
+	if (request == PTRACE_TRACEME) {
+		/* are we already being traced? */
+		if (current->ptrace & PT_PTRACED)
+			goto out;
+		ret = security_ptrace(current->parent, current);
+		if (ret)
+			goto out;
+		/* set the ptrace bit in the process flags. */
+		current->ptrace |= PT_PTRACED;
+		ret = 0;
+		goto out;
+	}
+	ret = -ESRCH;
+	read_lock(&tasklist_lock);
+	child = find_task_by_pid(pid);
+	if (child)
+		get_task_struct(child);
+	read_unlock(&tasklist_lock);
+	if (!child)
+		goto out;
+
+	ret = -EPERM;
+	if (pid == 1)		/* you may not mess with init */
+		goto out_tsk;
+
+	if (request == PTRACE_ATTACH) {
+		ret = ptrace_attach(child);
+		goto out_tsk;
+	}
+	ret = ptrace_check_attach(child, request == PTRACE_KILL);
+	if (ret == 0)
+		ret = do_ptrace(request, child, addr, data);
+
+out_tsk:
+	put_task_struct(child);
+out:
+	unlock_kernel();
+	return ret;
+}
+
+asmlinkage void syscall_trace(int why, struct pt_regs *regs)
+{
+	unsigned long ip;
+
+	if (!test_thread_flag(TIF_SYSCALL_TRACE))
+		return;
+	if (!(current->ptrace & PT_PTRACED))
+		return;
+
+	/*
+	 * Save IP.  IP is used to denote syscall entry/exit:
+	 *  IP = 0 -> entry, = 1 -> exit
+	 */
+	ip = regs->ARM_ip;
+	regs->ARM_ip = why;
+
+	/* the 0x80 provides a way for the tracing parent to distinguish
+	   between a syscall stop and SIGTRAP delivery */
+	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+				 ? 0x80 : 0));
+	/*
+	 * this isn't the same as continuing with a signal, but it will do
+	 * for normal use.  strace only continues with a signal if the
+	 * stopping signal is not SIGTRAP.  -brl
+	 */
+	if (current->exit_code) {
+		send_sig(current->exit_code, current, 1);
+		current->exit_code = 0;
+	}
+	regs->ARM_ip = ip;
+}
diff --git a/arch/arm/kernel/ptrace.h b/arch/arm/kernel/ptrace.h
new file mode 100644
index 000000000000..f7cad13a22e9
--- /dev/null
+++ b/arch/arm/kernel/ptrace.h
@@ -0,0 +1,12 @@
+/*
+ *  linux/arch/arm/kernel/ptrace.h
+ *
+ *  Copyright (C) 2000-2003 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+extern void ptrace_cancel_bpt(struct task_struct *);
+extern void ptrace_set_bpt(struct task_struct *);
+extern void ptrace_break(struct task_struct *, struct pt_regs *);
diff --git a/arch/arm/kernel/semaphore.c b/arch/arm/kernel/semaphore.c
new file mode 100644
index 000000000000..ac423e3e224b
--- /dev/null
+++ b/arch/arm/kernel/semaphore.c
@@ -0,0 +1,220 @@
+/*
+ *  ARM semaphore implementation, taken from
+ *
+ *  i386 semaphore implementation.
+ *
+ *  (C) Copyright 1999 Linus Torvalds
+ *
+ *  Modified for ARM by Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+
+#include <asm/semaphore.h>
+
+/*
+ * Semaphores are implemented using a two-way counter:
+ * The "count" variable is decremented for each process
+ * that tries to acquire the semaphore, while the "sleeping"
+ * variable is a count of such acquires.
+ *
+ * Notably, the inline "up()" and "down()" functions can
+ * efficiently test if they need to do any extra work (up
+ * needs to do something only if count was negative before
+ * the increment operation.
+ *
+ * "sleeping" and the contention routine ordering is
+ * protected by the semaphore spinlock.
+ *
+ * Note that these functions are only called when there is
+ * contention on the lock, and as such all this is the
+ * "non-critical" part of the whole semaphore business. The
+ * critical part is the inline stuff in <asm/semaphore.h>
+ * where we want to avoid any extra jumps and calls.
+ */
+
+/*
+ * Logic:
+ *  - only on a boundary condition do we need to care. When we go
+ *    from a negative count to a non-negative, we wake people up.
+ *  - when we go from a non-negative count to a negative do we
+ *    (a) synchronize with the "sleeper" count and (b) make sure
+ *    that we're on the wakeup list before we synchronize so that
+ *    we cannot lose wakeup events.
+ */
+
+void __up(struct semaphore *sem)
+{
+	wake_up(&sem->wait);
+}
+
+static DEFINE_SPINLOCK(semaphore_lock);
+
+void __sched __down(struct semaphore * sem)
+{
+	struct task_struct *tsk = current;
+	DECLARE_WAITQUEUE(wait, tsk);
+	tsk->state = TASK_UNINTERRUPTIBLE;
+	add_wait_queue_exclusive(&sem->wait, &wait);
+
+	spin_lock_irq(&semaphore_lock);
+	sem->sleepers++;
+	for (;;) {
+		int sleepers = sem->sleepers;
+
+		/*
+		 * Add "everybody else" into it. They aren't
+		 * playing, because we own the spinlock.
+		 */
+		if (!atomic_add_negative(sleepers - 1, &sem->count)) {
+			sem->sleepers = 0;
+			break;
+		}
+		sem->sleepers = 1;	/* us - see -1 above */
+		spin_unlock_irq(&semaphore_lock);
+
+		schedule();
+		tsk->state = TASK_UNINTERRUPTIBLE;
+		spin_lock_irq(&semaphore_lock);
+	}
+	spin_unlock_irq(&semaphore_lock);
+	remove_wait_queue(&sem->wait, &wait);
+	tsk->state = TASK_RUNNING;
+	wake_up(&sem->wait);
+}
+
+int __sched __down_interruptible(struct semaphore * sem)
+{
+	int retval = 0;
+	struct task_struct *tsk = current;
+	DECLARE_WAITQUEUE(wait, tsk);
+	tsk->state = TASK_INTERRUPTIBLE;
+	add_wait_queue_exclusive(&sem->wait, &wait);
+
+	spin_lock_irq(&semaphore_lock);
+	sem->sleepers ++;
+	for (;;) {
+		int sleepers = sem->sleepers;
+
+		/*
+		 * With signals pending, this turns into
+		 * the trylock failure case - we won't be
+		 * sleeping, and we* can't get the lock as
+		 * it has contention. Just correct the count
+		 * and exit.
+		 */
+		if (signal_pending(current)) {
+			retval = -EINTR;
+			sem->sleepers = 0;
+			atomic_add(sleepers, &sem->count);
+			break;
+		}
+
+		/*
+		 * Add "everybody else" into it. They aren't
+		 * playing, because we own the spinlock. The
+		 * "-1" is because we're still hoping to get
+		 * the lock.
+		 */
+		if (!atomic_add_negative(sleepers - 1, &sem->count)) {
+			sem->sleepers = 0;
+			break;
+		}
+		sem->sleepers = 1;	/* us - see -1 above */
+		spin_unlock_irq(&semaphore_lock);
+
+		schedule();
+		tsk->state = TASK_INTERRUPTIBLE;
+		spin_lock_irq(&semaphore_lock);
+	}
+	spin_unlock_irq(&semaphore_lock);
+	tsk->state = TASK_RUNNING;
+	remove_wait_queue(&sem->wait, &wait);
+	wake_up(&sem->wait);
+	return retval;
+}
+
+/*
+ * Trylock failed - make sure we correct for
+ * having decremented the count.
+ *
+ * We could have done the trylock with a
+ * single "cmpxchg" without failure cases,
+ * but then it wouldn't work on a 386.
+ */
+int __down_trylock(struct semaphore * sem)
+{
+	int sleepers;
+	unsigned long flags;
+
+	spin_lock_irqsave(&semaphore_lock, flags);
+	sleepers = sem->sleepers + 1;
+	sem->sleepers = 0;
+
+	/*
+	 * Add "everybody else" and us into it. They aren't
+	 * playing, because we own the spinlock.
+	 */
+	if (!atomic_add_negative(sleepers, &sem->count))
+		wake_up(&sem->wait);
+
+	spin_unlock_irqrestore(&semaphore_lock, flags);
+	return 1;
+}
+
+/*
+ * The semaphore operations have a special calling sequence that
+ * allow us to do a simpler in-line version of them. These routines
+ * need to convert that sequence back into the C sequence when
+ * there is contention on the semaphore.
+ *
+ * ip contains the semaphore pointer on entry. Save the C-clobbered
+ * registers (r0 to r3 and lr), but not ip, as we use it as a return
+ * value in some cases..
+ */
+asm("	.section .sched.text,\"ax\"		\n\
+	.align	5				\n\
+	.globl	__down_failed			\n\
+__down_failed:					\n\
+	stmfd	sp!, {r0 - r3, lr}		\n\
+	mov	r0, ip				\n\
+	bl	__down				\n\
+	ldmfd	sp!, {r0 - r3, pc}		\n\
+						\n\
+	.align	5				\n\
+	.globl	__down_interruptible_failed	\n\
+__down_interruptible_failed:			\n\
+	stmfd	sp!, {r0 - r3, lr}		\n\
+	mov	r0, ip				\n\
+	bl	__down_interruptible		\n\
+	mov	ip, r0				\n\
+	ldmfd	sp!, {r0 - r3, pc}		\n\
+						\n\
+	.align	5				\n\
+	.globl	__down_trylock_failed		\n\
+__down_trylock_failed:				\n\
+	stmfd	sp!, {r0 - r3, lr}		\n\
+	mov	r0, ip				\n\
+	bl	__down_trylock			\n\
+	mov	ip, r0				\n\
+	ldmfd	sp!, {r0 - r3, pc}		\n\
+						\n\
+	.align	5				\n\
+	.globl	__up_wakeup			\n\
+__up_wakeup:					\n\
+	stmfd	sp!, {r0 - r3, lr}		\n\
+	mov	r0, ip				\n\
+	bl	__up				\n\
+	ldmfd	sp!, {r0 - r3, pc}		\n\
+	");
+
+EXPORT_SYMBOL(__down_failed);
+EXPORT_SYMBOL(__down_interruptible_failed);
+EXPORT_SYMBOL(__down_trylock_failed);
+EXPORT_SYMBOL(__up_wakeup);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
new file mode 100644
index 000000000000..c2a7da3ac0f1
--- /dev/null
+++ b/arch/arm/kernel/setup.c
@@ -0,0 +1,875 @@
+/*
+ *  linux/arch/arm/kernel/setup.c
+ *
+ *  Copyright (C) 1995-2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/stddef.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/utsname.h>
+#include <linux/initrd.h>
+#include <linux/console.h>
+#include <linux/bootmem.h>
+#include <linux/seq_file.h>
+#include <linux/tty.h>
+#include <linux/init.h>
+#include <linux/root_dev.h>
+#include <linux/cpu.h>
+#include <linux/interrupt.h>
+
+#include <asm/cpu.h>
+#include <asm/elf.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/procinfo.h>
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+
+#ifndef MEM_SIZE
+#define MEM_SIZE	(16*1024*1024)
+#endif
+
+#if defined(CONFIG_FPE_NWFPE) || defined(CONFIG_FPE_FASTFPE)
+char fpe_type[8];
+
+static int __init fpe_setup(char *line)
+{
+	memcpy(fpe_type, line, 8);
+	return 1;
+}
+
+__setup("fpe=", fpe_setup);
+#endif
+
+extern unsigned int mem_fclk_21285;
+extern void paging_init(struct meminfo *, struct machine_desc *desc);
+extern void convert_to_tag_list(struct tag *tags);
+extern void squash_mem_tags(struct tag *tag);
+extern void reboot_setup(char *str);
+extern int root_mountflags;
+extern void _stext, _text, _etext, __data_start, _edata, _end;
+
+unsigned int processor_id;
+unsigned int __machine_arch_type;
+EXPORT_SYMBOL(__machine_arch_type);
+
+unsigned int system_rev;
+EXPORT_SYMBOL(system_rev);
+
+unsigned int system_serial_low;
+EXPORT_SYMBOL(system_serial_low);
+
+unsigned int system_serial_high;
+EXPORT_SYMBOL(system_serial_high);
+
+unsigned int elf_hwcap;
+EXPORT_SYMBOL(elf_hwcap);
+
+
+#ifdef MULTI_CPU
+struct processor processor;
+#endif
+#ifdef MULTI_TLB
+struct cpu_tlb_fns cpu_tlb;
+#endif
+#ifdef MULTI_USER
+struct cpu_user_fns cpu_user;
+#endif
+#ifdef MULTI_CACHE
+struct cpu_cache_fns cpu_cache;
+#endif
+
+char elf_platform[ELF_PLATFORM_SIZE];
+EXPORT_SYMBOL(elf_platform);
+
+unsigned long phys_initrd_start __initdata = 0;
+unsigned long phys_initrd_size __initdata = 0;
+
+static struct meminfo meminfo __initdata = { 0, };
+static const char *cpu_name;
+static const char *machine_name;
+static char command_line[COMMAND_LINE_SIZE];
+
+static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
+static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
+#define ENDIANNESS ((char)endian_test.l)
+
+DEFINE_PER_CPU(struct cpuinfo_arm, cpu_data);
+
+/*
+ * Standard memory resources
+ */
+static struct resource mem_res[] = {
+	{ "Video RAM",   0,     0,     IORESOURCE_MEM			},
+	{ "Kernel text", 0,     0,     IORESOURCE_MEM			},
+	{ "Kernel data", 0,     0,     IORESOURCE_MEM			}
+};
+
+#define video_ram   mem_res[0]
+#define kernel_code mem_res[1]
+#define kernel_data mem_res[2]
+
+static struct resource io_res[] = {
+	{ "reserved",    0x3bc, 0x3be, IORESOURCE_IO | IORESOURCE_BUSY },
+	{ "reserved",    0x378, 0x37f, IORESOURCE_IO | IORESOURCE_BUSY },
+	{ "reserved",    0x278, 0x27f, IORESOURCE_IO | IORESOURCE_BUSY }
+};
+
+#define lp0 io_res[0]
+#define lp1 io_res[1]
+#define lp2 io_res[2]
+
+static const char *cache_types[16] = {
+	"write-through",
+	"write-back",
+	"write-back",
+	"undefined 3",
+	"undefined 4",
+	"undefined 5",
+	"write-back",
+	"write-back",
+	"undefined 8",
+	"undefined 9",
+	"undefined 10",
+	"undefined 11",
+	"undefined 12",
+	"undefined 13",
+	"write-back",
+	"undefined 15",
+};
+
+static const char *cache_clean[16] = {
+	"not required",
+	"read-block",
+	"cp15 c7 ops",
+	"undefined 3",
+	"undefined 4",
+	"undefined 5",
+	"cp15 c7 ops",
+	"cp15 c7 ops",
+	"undefined 8",
+	"undefined 9",
+	"undefined 10",
+	"undefined 11",
+	"undefined 12",
+	"undefined 13",
+	"cp15 c7 ops",
+	"undefined 15",
+};
+
+static const char *cache_lockdown[16] = {
+	"not supported",
+	"not supported",
+	"not supported",
+	"undefined 3",
+	"undefined 4",
+	"undefined 5",
+	"format A",
+	"format B",
+	"undefined 8",
+	"undefined 9",
+	"undefined 10",
+	"undefined 11",
+	"undefined 12",
+	"undefined 13",
+	"format C",
+	"undefined 15",
+};
+
+static const char *proc_arch[] = {
+	"undefined/unknown",
+	"3",
+	"4",
+	"4T",
+	"5",
+	"5T",
+	"5TE",
+	"5TEJ",
+	"6TEJ",
+	"?(10)",
+	"?(11)",
+	"?(12)",
+	"?(13)",
+	"?(14)",
+	"?(15)",
+	"?(16)",
+	"?(17)",
+};
+
+#define CACHE_TYPE(x)	(((x) >> 25) & 15)
+#define CACHE_S(x)	((x) & (1 << 24))
+#define CACHE_DSIZE(x)	(((x) >> 12) & 4095)	/* only if S=1 */
+#define CACHE_ISIZE(x)	((x) & 4095)
+
+#define CACHE_SIZE(y)	(((y) >> 6) & 7)
+#define CACHE_ASSOC(y)	(((y) >> 3) & 7)
+#define CACHE_M(y)	((y) & (1 << 2))
+#define CACHE_LINE(y)	((y) & 3)
+
+static inline void dump_cache(const char *prefix, int cpu, unsigned int cache)
+{
+	unsigned int mult = 2 + (CACHE_M(cache) ? 1 : 0);
+
+	printk("CPU%u: %s: %d bytes, associativity %d, %d byte lines, %d sets\n",
+		cpu, prefix,
+		mult << (8 + CACHE_SIZE(cache)),
+		(mult << CACHE_ASSOC(cache)) >> 1,
+		8 << CACHE_LINE(cache),
+		1 << (6 + CACHE_SIZE(cache) - CACHE_ASSOC(cache) -
+			CACHE_LINE(cache)));
+}
+
+static void __init dump_cpu_info(int cpu)
+{
+	unsigned int info = read_cpuid(CPUID_CACHETYPE);
+
+	if (info != processor_id) {
+		printk("CPU%u: D %s %s cache\n", cpu, cache_is_vivt() ? "VIVT" : "VIPT",
+		       cache_types[CACHE_TYPE(info)]);
+		if (CACHE_S(info)) {
+			dump_cache("I cache", cpu, CACHE_ISIZE(info));
+			dump_cache("D cache", cpu, CACHE_DSIZE(info));
+		} else {
+			dump_cache("cache", cpu, CACHE_ISIZE(info));
+		}
+	}
+}
+
+int cpu_architecture(void)
+{
+	int cpu_arch;
+
+	if ((processor_id & 0x0000f000) == 0) {
+		cpu_arch = CPU_ARCH_UNKNOWN;
+	} else if ((processor_id & 0x0000f000) == 0x00007000) {
+		cpu_arch = (processor_id & (1 << 23)) ? CPU_ARCH_ARMv4T : CPU_ARCH_ARMv3;
+	} else {
+		cpu_arch = (processor_id >> 16) & 7;
+		if (cpu_arch)
+			cpu_arch += CPU_ARCH_ARMv3;
+	}
+
+	return cpu_arch;
+}
+
+/*
+ * These functions re-use the assembly code in head.S, which
+ * already provide the required functionality.
+ */
+extern struct proc_info_list *lookup_processor_type(void);
+extern struct machine_desc *lookup_machine_type(unsigned int);
+
+static void __init setup_processor(void)
+{
+	struct proc_info_list *list;
+
+	/*
+	 * locate processor in the list of supported processor
+	 * types.  The linker builds this table for us from the
+	 * entries in arch/arm/mm/proc-*.S
+	 */
+	list = lookup_processor_type();
+	if (!list) {
+		printk("CPU configuration botched (ID %08x), unable "
+		       "to continue.\n", processor_id);
+		while (1);
+	}
+
+	cpu_name = list->cpu_name;
+
+#ifdef MULTI_CPU
+	processor = *list->proc;
+#endif
+#ifdef MULTI_TLB
+	cpu_tlb = *list->tlb;
+#endif
+#ifdef MULTI_USER
+	cpu_user = *list->user;
+#endif
+#ifdef MULTI_CACHE
+	cpu_cache = *list->cache;
+#endif
+
+	printk("CPU: %s [%08x] revision %d (ARMv%s)\n",
+	       cpu_name, processor_id, (int)processor_id & 15,
+	       proc_arch[cpu_architecture()]);
+
+	dump_cpu_info(smp_processor_id());
+
+	sprintf(system_utsname.machine, "%s%c", list->arch_name, ENDIANNESS);
+	sprintf(elf_platform, "%s%c", list->elf_name, ENDIANNESS);
+	elf_hwcap = list->elf_hwcap;
+
+	cpu_proc_init();
+}
+
+static struct machine_desc * __init setup_machine(unsigned int nr)
+{
+	struct machine_desc *list;
+
+	/*
+	 * locate machine in the list of supported machines.
+	 */
+	list = lookup_machine_type(nr);
+	if (!list) {
+		printk("Machine configuration botched (nr %d), unable "
+		       "to continue.\n", nr);
+		while (1);
+	}
+
+	printk("Machine: %s\n", list->name);
+
+	return list;
+}
+
+static void __init early_initrd(char **p)
+{
+	unsigned long start, size;
+
+	start = memparse(*p, p);
+	if (**p == ',') {
+		size = memparse((*p) + 1, p);
+
+		phys_initrd_start = start;
+		phys_initrd_size = size;
+	}
+}
+__early_param("initrd=", early_initrd);
+
+/*
+ * Pick out the memory size.  We look for mem=size@start,
+ * where start and size are "size[KkMm]"
+ */
+static void __init early_mem(char **p)
+{
+	static int usermem __initdata = 0;
+	unsigned long size, start;
+
+	/*
+	 * If the user specifies memory size, we
+	 * blow away any automatically generated
+	 * size.
+	 */
+	if (usermem == 0) {
+		usermem = 1;
+		meminfo.nr_banks = 0;
+	}
+
+	start = PHYS_OFFSET;
+	size  = memparse(*p, p);
+	if (**p == '@')
+		start = memparse(*p + 1, p);
+
+	meminfo.bank[meminfo.nr_banks].start = start;
+	meminfo.bank[meminfo.nr_banks].size  = size;
+	meminfo.bank[meminfo.nr_banks].node  = PHYS_TO_NID(start);
+	meminfo.nr_banks += 1;
+}
+__early_param("mem=", early_mem);
+
+/*
+ * Initial parsing of the command line.
+ */
+static void __init parse_cmdline(char **cmdline_p, char *from)
+{
+	char c = ' ', *to = command_line;
+	int len = 0;
+
+	for (;;) {
+		if (c == ' ') {
+			extern struct early_params __early_begin, __early_end;
+			struct early_params *p;
+
+			for (p = &__early_begin; p < &__early_end; p++) {
+				int len = strlen(p->arg);
+
+				if (memcmp(from, p->arg, len) == 0) {
+					if (to != command_line)
+						to -= 1;
+					from += len;
+					p->fn(&from);
+
+					while (*from != ' ' && *from != '\0')
+						from++;
+					break;
+				}
+			}
+		}
+		c = *from++;
+		if (!c)
+			break;
+		if (COMMAND_LINE_SIZE <= ++len)
+			break;
+		*to++ = c;
+	}
+	*to = '\0';
+	*cmdline_p = command_line;
+}
+
+static void __init
+setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
+{
+#ifdef CONFIG_BLK_DEV_RAM
+	extern int rd_size, rd_image_start, rd_prompt, rd_doload;
+
+	rd_image_start = image_start;
+	rd_prompt = prompt;
+	rd_doload = doload;
+
+	if (rd_sz)
+		rd_size = rd_sz;
+#endif
+}
+
+static void __init
+request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
+{
+	struct resource *res;
+	int i;
+
+	kernel_code.start   = virt_to_phys(&_text);
+	kernel_code.end     = virt_to_phys(&_etext - 1);
+	kernel_data.start   = virt_to_phys(&__data_start);
+	kernel_data.end     = virt_to_phys(&_end - 1);
+
+	for (i = 0; i < mi->nr_banks; i++) {
+		unsigned long virt_start, virt_end;
+
+		if (mi->bank[i].size == 0)
+			continue;
+
+		virt_start = __phys_to_virt(mi->bank[i].start);
+		virt_end   = virt_start + mi->bank[i].size - 1;
+
+		res = alloc_bootmem_low(sizeof(*res));
+		res->name  = "System RAM";
+		res->start = __virt_to_phys(virt_start);
+		res->end   = __virt_to_phys(virt_end);
+		res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+
+		request_resource(&iomem_resource, res);
+
+		if (kernel_code.start >= res->start &&
+		    kernel_code.end <= res->end)
+			request_resource(res, &kernel_code);
+		if (kernel_data.start >= res->start &&
+		    kernel_data.end <= res->end)
+			request_resource(res, &kernel_data);
+	}
+
+	if (mdesc->video_start) {
+		video_ram.start = mdesc->video_start;
+		video_ram.end   = mdesc->video_end;
+		request_resource(&iomem_resource, &video_ram);
+	}
+
+	/*
+	 * Some machines don't have the possibility of ever
+	 * possessing lp0, lp1 or lp2
+	 */
+	if (mdesc->reserve_lp0)
+		request_resource(&ioport_resource, &lp0);
+	if (mdesc->reserve_lp1)
+		request_resource(&ioport_resource, &lp1);
+	if (mdesc->reserve_lp2)
+		request_resource(&ioport_resource, &lp2);
+}
+
+/*
+ *  Tag parsing.
+ *
+ * This is the new way of passing data to the kernel at boot time.  Rather
+ * than passing a fixed inflexible structure to the kernel, we pass a list
+ * of variable-sized tags to the kernel.  The first tag must be a ATAG_CORE
+ * tag for the list to be recognised (to distinguish the tagged list from
+ * a param_struct).  The list is terminated with a zero-length tag (this tag
+ * is not parsed in any way).
+ */
+static int __init parse_tag_core(const struct tag *tag)
+{
+	if (tag->hdr.size > 2) {
+		if ((tag->u.core.flags & 1) == 0)
+			root_mountflags &= ~MS_RDONLY;
+		ROOT_DEV = old_decode_dev(tag->u.core.rootdev);
+	}
+	return 0;
+}
+
+__tagtable(ATAG_CORE, parse_tag_core);
+
+static int __init parse_tag_mem32(const struct tag *tag)
+{
+	if (meminfo.nr_banks >= NR_BANKS) {
+		printk(KERN_WARNING
+		       "Ignoring memory bank 0x%08x size %dKB\n",
+			tag->u.mem.start, tag->u.mem.size / 1024);
+		return -EINVAL;
+	}
+	meminfo.bank[meminfo.nr_banks].start = tag->u.mem.start;
+	meminfo.bank[meminfo.nr_banks].size  = tag->u.mem.size;
+	meminfo.bank[meminfo.nr_banks].node  = PHYS_TO_NID(tag->u.mem.start);
+	meminfo.nr_banks += 1;
+
+	return 0;
+}
+
+__tagtable(ATAG_MEM, parse_tag_mem32);
+
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
+struct screen_info screen_info = {
+ .orig_video_lines	= 30,
+ .orig_video_cols	= 80,
+ .orig_video_mode	= 0,
+ .orig_video_ega_bx	= 0,
+ .orig_video_isVGA	= 1,
+ .orig_video_points	= 8
+};
+
+static int __init parse_tag_videotext(const struct tag *tag)
+{
+	screen_info.orig_x            = tag->u.videotext.x;
+	screen_info.orig_y            = tag->u.videotext.y;
+	screen_info.orig_video_page   = tag->u.videotext.video_page;
+	screen_info.orig_video_mode   = tag->u.videotext.video_mode;
+	screen_info.orig_video_cols   = tag->u.videotext.video_cols;
+	screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
+	screen_info.orig_video_lines  = tag->u.videotext.video_lines;
+	screen_info.orig_video_isVGA  = tag->u.videotext.video_isvga;
+	screen_info.orig_video_points = tag->u.videotext.video_points;
+	return 0;
+}
+
+__tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
+#endif
+
+static int __init parse_tag_ramdisk(const struct tag *tag)
+{
+	setup_ramdisk((tag->u.ramdisk.flags & 1) == 0,
+		      (tag->u.ramdisk.flags & 2) == 0,
+		      tag->u.ramdisk.start, tag->u.ramdisk.size);
+	return 0;
+}
+
+__tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
+
+static int __init parse_tag_initrd(const struct tag *tag)
+{
+	printk(KERN_WARNING "ATAG_INITRD is deprecated; "
+		"please update your bootloader.\n");
+	phys_initrd_start = __virt_to_phys(tag->u.initrd.start);
+	phys_initrd_size = tag->u.initrd.size;
+	return 0;
+}
+
+__tagtable(ATAG_INITRD, parse_tag_initrd);
+
+static int __init parse_tag_initrd2(const struct tag *tag)
+{
+	phys_initrd_start = tag->u.initrd.start;
+	phys_initrd_size = tag->u.initrd.size;
+	return 0;
+}
+
+__tagtable(ATAG_INITRD2, parse_tag_initrd2);
+
+static int __init parse_tag_serialnr(const struct tag *tag)
+{
+	system_serial_low = tag->u.serialnr.low;
+	system_serial_high = tag->u.serialnr.high;
+	return 0;
+}
+
+__tagtable(ATAG_SERIAL, parse_tag_serialnr);
+
+static int __init parse_tag_revision(const struct tag *tag)
+{
+	system_rev = tag->u.revision.rev;
+	return 0;
+}
+
+__tagtable(ATAG_REVISION, parse_tag_revision);
+
+static int __init parse_tag_cmdline(const struct tag *tag)
+{
+	strlcpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
+	return 0;
+}
+
+__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
+
+/*
+ * Scan the tag table for this tag, and call its parse function.
+ * The tag table is built by the linker from all the __tagtable
+ * declarations.
+ */
+static int __init parse_tag(const struct tag *tag)
+{
+	extern struct tagtable __tagtable_begin, __tagtable_end;
+	struct tagtable *t;
+
+	for (t = &__tagtable_begin; t < &__tagtable_end; t++)
+		if (tag->hdr.tag == t->tag) {
+			t->parse(tag);
+			break;
+		}
+
+	return t < &__tagtable_end;
+}
+
+/*
+ * Parse all tags in the list, checking both the global and architecture
+ * specific tag tables.
+ */
+static void __init parse_tags(const struct tag *t)
+{
+	for (; t->hdr.size; t = tag_next(t))
+		if (!parse_tag(t))
+			printk(KERN_WARNING
+				"Ignoring unrecognised tag 0x%08x\n",
+				t->hdr.tag);
+}
+
+/*
+ * This holds our defaults.
+ */
+static struct init_tags {
+	struct tag_header hdr1;
+	struct tag_core   core;
+	struct tag_header hdr2;
+	struct tag_mem32  mem;
+	struct tag_header hdr3;
+} init_tags __initdata = {
+	{ tag_size(tag_core), ATAG_CORE },
+	{ 1, PAGE_SIZE, 0xff },
+	{ tag_size(tag_mem32), ATAG_MEM },
+	{ MEM_SIZE, PHYS_OFFSET },
+	{ 0, ATAG_NONE }
+};
+
+static void (*init_machine)(void) __initdata;
+
+static int __init customize_machine(void)
+{
+	/* customizes platform devices, or adds new ones */
+	if (init_machine)
+		init_machine();
+	return 0;
+}
+arch_initcall(customize_machine);
+
+void __init setup_arch(char **cmdline_p)
+{
+	struct tag *tags = (struct tag *)&init_tags;
+	struct machine_desc *mdesc;
+	char *from = default_command_line;
+
+	setup_processor();
+	mdesc = setup_machine(machine_arch_type);
+	machine_name = mdesc->name;
+
+	if (mdesc->soft_reboot)
+		reboot_setup("s");
+
+	if (mdesc->param_offset)
+		tags = phys_to_virt(mdesc->param_offset);
+
+	/*
+	 * If we have the old style parameters, convert them to
+	 * a tag list.
+	 */
+	if (tags->hdr.tag != ATAG_CORE)
+		convert_to_tag_list(tags);
+	if (tags->hdr.tag != ATAG_CORE)
+		tags = (struct tag *)&init_tags;
+
+	if (mdesc->fixup)
+		mdesc->fixup(mdesc, tags, &from, &meminfo);
+
+	if (tags->hdr.tag == ATAG_CORE) {
+		if (meminfo.nr_banks != 0)
+			squash_mem_tags(tags);
+		parse_tags(tags);
+	}
+
+	init_mm.start_code = (unsigned long) &_text;
+	init_mm.end_code   = (unsigned long) &_etext;
+	init_mm.end_data   = (unsigned long) &_edata;
+	init_mm.brk	   = (unsigned long) &_end;
+
+	memcpy(saved_command_line, from, COMMAND_LINE_SIZE);
+	saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
+	parse_cmdline(cmdline_p, from);
+	paging_init(&meminfo, mdesc);
+	request_standard_resources(&meminfo, mdesc);
+
+	/*
+	 * Set up various architecture-specific pointers
+	 */
+	init_arch_irq = mdesc->init_irq;
+	system_timer = mdesc->timer;
+	init_machine = mdesc->init_machine;
+
+#ifdef CONFIG_VT
+#if defined(CONFIG_VGA_CONSOLE)
+	conswitchp = &vga_con;
+#elif defined(CONFIG_DUMMY_CONSOLE)
+	conswitchp = &dummy_con;
+#endif
+#endif
+}
+
+
+static int __init topology_init(void)
+{
+	int cpu;
+
+	for_each_cpu(cpu)
+		register_cpu(&per_cpu(cpu_data, cpu).cpu, cpu, NULL);
+
+	return 0;
+}
+
+subsys_initcall(topology_init);
+
+static const char *hwcap_str[] = {
+	"swp",
+	"half",
+	"thumb",
+	"26bit",
+	"fastmult",
+	"fpa",
+	"vfp",
+	"edsp",
+	"java",
+	NULL
+};
+
+static void
+c_show_cache(struct seq_file *m, const char *type, unsigned int cache)
+{
+	unsigned int mult = 2 + (CACHE_M(cache) ? 1 : 0);
+
+	seq_printf(m, "%s size\t\t: %d\n"
+		      "%s assoc\t\t: %d\n"
+		      "%s line length\t: %d\n"
+		      "%s sets\t\t: %d\n",
+		type, mult << (8 + CACHE_SIZE(cache)),
+		type, (mult << CACHE_ASSOC(cache)) >> 1,
+		type, 8 << CACHE_LINE(cache),
+		type, 1 << (6 + CACHE_SIZE(cache) - CACHE_ASSOC(cache) -
+			    CACHE_LINE(cache)));
+}
+
+static int c_show(struct seq_file *m, void *v)
+{
+	int i;
+
+	seq_printf(m, "Processor\t: %s rev %d (%s)\n",
+		   cpu_name, (int)processor_id & 15, elf_platform);
+
+#if defined(CONFIG_SMP)
+	for_each_online_cpu(i) {
+		seq_printf(m, "Processor\t: %d\n", i);
+		seq_printf(m, "BogoMIPS\t: %lu.%02lu\n\n",
+			   per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ),
+			   (per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100);
+	}
+#else /* CONFIG_SMP */
+	seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
+		   loops_per_jiffy / (500000/HZ),
+		   (loops_per_jiffy / (5000/HZ)) % 100);
+#endif
+
+	/* dump out the processor features */
+	seq_puts(m, "Features\t: ");
+
+	for (i = 0; hwcap_str[i]; i++)
+		if (elf_hwcap & (1 << i))
+			seq_printf(m, "%s ", hwcap_str[i]);
+
+	seq_printf(m, "\nCPU implementer\t: 0x%02x\n", processor_id >> 24);
+	seq_printf(m, "CPU architecture: %s\n", proc_arch[cpu_architecture()]);
+
+	if ((processor_id & 0x0000f000) == 0x00000000) {
+		/* pre-ARM7 */
+		seq_printf(m, "CPU part\t\t: %07x\n", processor_id >> 4);
+	} else {
+		if ((processor_id & 0x0000f000) == 0x00007000) {
+			/* ARM7 */
+			seq_printf(m, "CPU variant\t: 0x%02x\n",
+				   (processor_id >> 16) & 127);
+		} else {
+			/* post-ARM7 */
+			seq_printf(m, "CPU variant\t: 0x%x\n",
+				   (processor_id >> 20) & 15);
+		}
+		seq_printf(m, "CPU part\t: 0x%03x\n",
+			   (processor_id >> 4) & 0xfff);
+	}
+	seq_printf(m, "CPU revision\t: %d\n", processor_id & 15);
+
+	{
+		unsigned int cache_info = read_cpuid(CPUID_CACHETYPE);
+		if (cache_info != processor_id) {
+			seq_printf(m, "Cache type\t: %s\n"
+				      "Cache clean\t: %s\n"
+				      "Cache lockdown\t: %s\n"
+				      "Cache format\t: %s\n",
+				   cache_types[CACHE_TYPE(cache_info)],
+				   cache_clean[CACHE_TYPE(cache_info)],
+				   cache_lockdown[CACHE_TYPE(cache_info)],
+				   CACHE_S(cache_info) ? "Harvard" : "Unified");
+
+			if (CACHE_S(cache_info)) {
+				c_show_cache(m, "I", CACHE_ISIZE(cache_info));
+				c_show_cache(m, "D", CACHE_DSIZE(cache_info));
+			} else {
+				c_show_cache(m, "Cache", CACHE_ISIZE(cache_info));
+			}
+		}
+	}
+
+	seq_puts(m, "\n");
+
+	seq_printf(m, "Hardware\t: %s\n", machine_name);
+	seq_printf(m, "Revision\t: %04x\n", system_rev);
+	seq_printf(m, "Serial\t\t: %08x%08x\n",
+		   system_serial_high, system_serial_low);
+
+	return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	return *pos < 1 ? (void *)1 : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	++*pos;
+	return NULL;
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+struct seq_operations cpuinfo_op = {
+	.start	= c_start,
+	.next	= c_next,
+	.stop	= c_stop,
+	.show	= c_show
+};
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
new file mode 100644
index 000000000000..931919fd5121
--- /dev/null
+++ b/arch/arm/kernel/signal.c
@@ -0,0 +1,748 @@
+/*
+ *  linux/arch/arm/kernel/signal.c
+ *
+ *  Copyright (C) 1995-2002 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/ptrace.h>
+#include <linux/personality.h>
+
+#include <asm/cacheflush.h>
+#include <asm/ucontext.h>
+#include <asm/uaccess.h>
+#include <asm/unistd.h>
+
+#include "ptrace.h"
+
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+/*
+ * For ARM syscalls, we encode the syscall number into the instruction.
+ */
+#define SWI_SYS_SIGRETURN	(0xef000000|(__NR_sigreturn))
+#define SWI_SYS_RT_SIGRETURN	(0xef000000|(__NR_rt_sigreturn))
+
+/*
+ * For Thumb syscalls, we pass the syscall number via r7.  We therefore
+ * need two 16-bit instructions.
+ */
+#define SWI_THUMB_SIGRETURN	(0xdf00 << 16 | 0x2700 | (__NR_sigreturn - __NR_SYSCALL_BASE))
+#define SWI_THUMB_RT_SIGRETURN	(0xdf00 << 16 | 0x2700 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE))
+
+static const unsigned long retcodes[4] = {
+	SWI_SYS_SIGRETURN,	SWI_THUMB_SIGRETURN,
+	SWI_SYS_RT_SIGRETURN,	SWI_THUMB_RT_SIGRETURN
+};
+
+static int do_signal(sigset_t *oldset, struct pt_regs * regs, int syscall);
+
+/*
+ * atomically swap in the new signal mask, and wait for a signal.
+ */
+asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask, struct pt_regs *regs)
+{
+	sigset_t saveset;
+
+	mask &= _BLOCKABLE;
+	spin_lock_irq(&current->sighand->siglock);
+	saveset = current->blocked;
+	siginitset(&current->blocked, mask);
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+	regs->ARM_r0 = -EINTR;
+
+	while (1) {
+		current->state = TASK_INTERRUPTIBLE;
+		schedule();
+		if (do_signal(&saveset, regs, 0))
+			return regs->ARM_r0;
+	}
+}
+
+asmlinkage int
+sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize, struct pt_regs *regs)
+{
+	sigset_t saveset, newset;
+
+	/* XXX: Don't preclude handling different sized sigset_t's. */
+	if (sigsetsize != sizeof(sigset_t))
+		return -EINVAL;
+
+	if (copy_from_user(&newset, unewset, sizeof(newset)))
+		return -EFAULT;
+	sigdelsetmask(&newset, ~_BLOCKABLE);
+
+	spin_lock_irq(&current->sighand->siglock);
+	saveset = current->blocked;
+	current->blocked = newset;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+	regs->ARM_r0 = -EINTR;
+
+	while (1) {
+		current->state = TASK_INTERRUPTIBLE;
+		schedule();
+		if (do_signal(&saveset, regs, 0))
+			return regs->ARM_r0;
+	}
+}
+
+asmlinkage int 
+sys_sigaction(int sig, const struct old_sigaction __user *act,
+	      struct old_sigaction __user *oact)
+{
+	struct k_sigaction new_ka, old_ka;
+	int ret;
+
+	if (act) {
+		old_sigset_t mask;
+		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+		    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+			return -EFAULT;
+		__get_user(new_ka.sa.sa_flags, &act->sa_flags);
+		__get_user(mask, &act->sa_mask);
+		siginitset(&new_ka.sa.sa_mask, mask);
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+		    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+		    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+			return -EFAULT;
+		__put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+		__put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+	}
+
+	return ret;
+}
+
+#ifdef CONFIG_IWMMXT
+
+/* iwmmxt_area is 0x98 bytes long, preceeded by 8 bytes of signature */
+#define IWMMXT_STORAGE_SIZE	(0x98 + 8)
+#define IWMMXT_MAGIC0		0x12ef842a
+#define IWMMXT_MAGIC1		0x1c07ca71
+
+struct iwmmxt_sigframe {
+	unsigned long	magic0;
+	unsigned long	magic1;
+	unsigned long	storage[0x98/4];
+};
+
+static int page_present(struct mm_struct *mm, void __user *uptr, int wr)
+{
+	unsigned long addr = (unsigned long)uptr;
+	pgd_t *pgd = pgd_offset(mm, addr);
+	if (pgd_present(*pgd)) {
+		pmd_t *pmd = pmd_offset(pgd, addr);
+		if (pmd_present(*pmd)) {
+			pte_t *pte = pte_offset_map(pmd, addr);
+			return (pte_present(*pte) && (!wr || pte_write(*pte)));
+		}
+	}
+	return 0;
+}
+
+static int copy_locked(void __user *uptr, void *kptr, size_t size, int write,
+		       void (*copyfn)(void *, void __user *))
+{
+	unsigned char v, __user *userptr = uptr;
+	int err = 0;
+
+	do {
+		struct mm_struct *mm;
+
+		if (write) {
+			__put_user_error(0, userptr, err);
+			__put_user_error(0, userptr + size - 1, err);
+		} else {
+			__get_user_error(v, userptr, err);
+			__get_user_error(v, userptr + size - 1, err);
+		}
+
+		if (err)
+			break;
+
+		mm = current->mm;
+		spin_lock(&mm->page_table_lock);
+		if (page_present(mm, userptr, write) &&
+		    page_present(mm, userptr + size - 1, write)) {
+		    	copyfn(kptr, uptr);
+		} else
+			err = 1;
+		spin_unlock(&mm->page_table_lock);
+	} while (err);
+
+	return err;
+}
+
+static int preserve_iwmmxt_context(struct iwmmxt_sigframe *frame)
+{
+	int err = 0;
+
+	/* the iWMMXt context must be 64 bit aligned */
+	WARN_ON((unsigned long)frame & 7);
+
+	__put_user_error(IWMMXT_MAGIC0, &frame->magic0, err);
+	__put_user_error(IWMMXT_MAGIC1, &frame->magic1, err);
+
+	/*
+	 * iwmmxt_task_copy() doesn't check user permissions.
+	 * Let's do a dummy write on the upper boundary to ensure
+	 * access to user mem is OK all way up.
+	 */
+	err |= copy_locked(&frame->storage, current_thread_info(),
+			   sizeof(frame->storage), 1, iwmmxt_task_copy);
+	return err;
+}
+
+static int restore_iwmmxt_context(struct iwmmxt_sigframe *frame)
+{
+	unsigned long magic0, magic1;
+	int err = 0;
+
+	/* the iWMMXt context is 64 bit aligned */
+	WARN_ON((unsigned long)frame & 7);
+
+	/*
+	 * Validate iWMMXt context signature.
+	 * Also, iwmmxt_task_restore() doesn't check user permissions.
+	 * Let's do a dummy write on the upper boundary to ensure
+	 * access to user mem is OK all way up.
+	 */
+	__get_user_error(magic0, &frame->magic0, err);
+	__get_user_error(magic1, &frame->magic1, err);
+	if (!err && magic0 == IWMMXT_MAGIC0 && magic1 == IWMMXT_MAGIC1)
+		err = copy_locked(&frame->storage, current_thread_info(),
+				  sizeof(frame->storage), 0, iwmmxt_task_restore);
+	return err;
+}
+
+#endif
+
+/*
+ * Auxiliary signal frame.  This saves stuff like FP state.
+ * The layout of this structure is not part of the user ABI.
+ */
+struct aux_sigframe {
+#ifdef CONFIG_IWMMXT
+	struct iwmmxt_sigframe	iwmmxt;
+#endif
+#ifdef CONFIG_VFP
+	union vfp_state		vfp;
+#endif
+};
+
+/*
+ * Do a signal return; undo the signal stack.  These are aligned to 64-bit.
+ */
+struct sigframe {
+	struct sigcontext sc;
+	unsigned long extramask[_NSIG_WORDS-1];
+	unsigned long retcode;
+	struct aux_sigframe aux __attribute__((aligned(8)));
+};
+
+struct rt_sigframe {
+	struct siginfo __user *pinfo;
+	void __user *puc;
+	struct siginfo info;
+	struct ucontext uc;
+	unsigned long retcode;
+	struct aux_sigframe aux __attribute__((aligned(8)));
+};
+
+static int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
+		   struct aux_sigframe __user *aux)
+{
+	int err = 0;
+
+	__get_user_error(regs->ARM_r0, &sc->arm_r0, err);
+	__get_user_error(regs->ARM_r1, &sc->arm_r1, err);
+	__get_user_error(regs->ARM_r2, &sc->arm_r2, err);
+	__get_user_error(regs->ARM_r3, &sc->arm_r3, err);
+	__get_user_error(regs->ARM_r4, &sc->arm_r4, err);
+	__get_user_error(regs->ARM_r5, &sc->arm_r5, err);
+	__get_user_error(regs->ARM_r6, &sc->arm_r6, err);
+	__get_user_error(regs->ARM_r7, &sc->arm_r7, err);
+	__get_user_error(regs->ARM_r8, &sc->arm_r8, err);
+	__get_user_error(regs->ARM_r9, &sc->arm_r9, err);
+	__get_user_error(regs->ARM_r10, &sc->arm_r10, err);
+	__get_user_error(regs->ARM_fp, &sc->arm_fp, err);
+	__get_user_error(regs->ARM_ip, &sc->arm_ip, err);
+	__get_user_error(regs->ARM_sp, &sc->arm_sp, err);
+	__get_user_error(regs->ARM_lr, &sc->arm_lr, err);
+	__get_user_error(regs->ARM_pc, &sc->arm_pc, err);
+	__get_user_error(regs->ARM_cpsr, &sc->arm_cpsr, err);
+
+	err |= !valid_user_regs(regs);
+
+#ifdef CONFIG_IWMMXT
+	if (err == 0 && test_thread_flag(TIF_USING_IWMMXT))
+		err |= restore_iwmmxt_context(&aux->iwmmxt);
+#endif
+#ifdef CONFIG_VFP
+//	if (err == 0)
+//		err |= vfp_restore_state(&aux->vfp);
+#endif
+
+	return err;
+}
+
+asmlinkage int sys_sigreturn(struct pt_regs *regs)
+{
+	struct sigframe __user *frame;
+	sigset_t set;
+
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+	/*
+	 * Since we stacked the signal on a 64-bit boundary,
+	 * then 'sp' should be word aligned here.  If it's
+	 * not, then the user is trying to mess with us.
+	 */
+	if (regs->ARM_sp & 7)
+		goto badframe;
+
+	frame = (struct sigframe __user *)regs->ARM_sp;
+
+	if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
+		goto badframe;
+	if (__get_user(set.sig[0], &frame->sc.oldmask)
+	    || (_NSIG_WORDS > 1
+	        && __copy_from_user(&set.sig[1], &frame->extramask,
+				    sizeof(frame->extramask))))
+		goto badframe;
+
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+	current->blocked = set;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	if (restore_sigcontext(regs, &frame->sc, &frame->aux))
+		goto badframe;
+
+	/* Send SIGTRAP if we're single-stepping */
+	if (current->ptrace & PT_SINGLESTEP) {
+		ptrace_cancel_bpt(current);
+		send_sig(SIGTRAP, current, 1);
+	}
+
+	return regs->ARM_r0;
+
+badframe:
+	force_sig(SIGSEGV, current);
+	return 0;
+}
+
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
+{
+	struct rt_sigframe __user *frame;
+	sigset_t set;
+
+	/* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+	/*
+	 * Since we stacked the signal on a 64-bit boundary,
+	 * then 'sp' should be word aligned here.  If it's
+	 * not, then the user is trying to mess with us.
+	 */
+	if (regs->ARM_sp & 7)
+		goto badframe;
+
+	frame = (struct rt_sigframe __user *)regs->ARM_sp;
+
+	if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
+		goto badframe;
+	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+		goto badframe;
+
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+	current->blocked = set;
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &frame->aux))
+		goto badframe;
+
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
+		goto badframe;
+
+	/* Send SIGTRAP if we're single-stepping */
+	if (current->ptrace & PT_SINGLESTEP) {
+		ptrace_cancel_bpt(current);
+		send_sig(SIGTRAP, current, 1);
+	}
+
+	return regs->ARM_r0;
+
+badframe:
+	force_sig(SIGSEGV, current);
+	return 0;
+}
+
+static int
+setup_sigcontext(struct sigcontext __user *sc, struct aux_sigframe __user *aux,
+		 struct pt_regs *regs, unsigned long mask)
+{
+	int err = 0;
+
+	__put_user_error(regs->ARM_r0, &sc->arm_r0, err);
+	__put_user_error(regs->ARM_r1, &sc->arm_r1, err);
+	__put_user_error(regs->ARM_r2, &sc->arm_r2, err);
+	__put_user_error(regs->ARM_r3, &sc->arm_r3, err);
+	__put_user_error(regs->ARM_r4, &sc->arm_r4, err);
+	__put_user_error(regs->ARM_r5, &sc->arm_r5, err);
+	__put_user_error(regs->ARM_r6, &sc->arm_r6, err);
+	__put_user_error(regs->ARM_r7, &sc->arm_r7, err);
+	__put_user_error(regs->ARM_r8, &sc->arm_r8, err);
+	__put_user_error(regs->ARM_r9, &sc->arm_r9, err);
+	__put_user_error(regs->ARM_r10, &sc->arm_r10, err);
+	__put_user_error(regs->ARM_fp, &sc->arm_fp, err);
+	__put_user_error(regs->ARM_ip, &sc->arm_ip, err);
+	__put_user_error(regs->ARM_sp, &sc->arm_sp, err);
+	__put_user_error(regs->ARM_lr, &sc->arm_lr, err);
+	__put_user_error(regs->ARM_pc, &sc->arm_pc, err);
+	__put_user_error(regs->ARM_cpsr, &sc->arm_cpsr, err);
+
+	__put_user_error(current->thread.trap_no, &sc->trap_no, err);
+	__put_user_error(current->thread.error_code, &sc->error_code, err);
+	__put_user_error(current->thread.address, &sc->fault_address, err);
+	__put_user_error(mask, &sc->oldmask, err);
+
+#ifdef CONFIG_IWMMXT
+	if (err == 0 && test_thread_flag(TIF_USING_IWMMXT))
+		err |= preserve_iwmmxt_context(&aux->iwmmxt);
+#endif
+#ifdef CONFIG_VFP
+//	if (err == 0)
+//		err |= vfp_save_state(&aux->vfp);
+#endif
+
+	return err;
+}
+
+static inline void __user *
+get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, int framesize)
+{
+	unsigned long sp = regs->ARM_sp;
+	void __user *frame;
+
+	/*
+	 * This is the X/Open sanctioned signal stack switching.
+	 */
+	if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp))
+		sp = current->sas_ss_sp + current->sas_ss_size;
+
+	/*
+	 * ATPCS B01 mandates 8-byte alignment
+	 */
+	frame = (void __user *)((sp - framesize) & ~7);
+
+	/*
+	 * Check that we can actually write to the signal frame.
+	 */
+	if (!access_ok(VERIFY_WRITE, frame, framesize))
+		frame = NULL;
+
+	return frame;
+}
+
+static int
+setup_return(struct pt_regs *regs, struct k_sigaction *ka,
+	     unsigned long __user *rc, void __user *frame, int usig)
+{
+	unsigned long handler = (unsigned long)ka->sa.sa_handler;
+	unsigned long retcode;
+	int thumb = 0;
+	unsigned long cpsr = regs->ARM_cpsr & ~PSR_f;
+
+	/*
+	 * Maybe we need to deliver a 32-bit signal to a 26-bit task.
+	 */
+	if (ka->sa.sa_flags & SA_THIRTYTWO)
+		cpsr = (cpsr & ~MODE_MASK) | USR_MODE;
+
+#ifdef CONFIG_ARM_THUMB
+	if (elf_hwcap & HWCAP_THUMB) {
+		/*
+		 * The LSB of the handler determines if we're going to
+		 * be using THUMB or ARM mode for this signal handler.
+		 */
+		thumb = handler & 1;
+
+		if (thumb)
+			cpsr |= PSR_T_BIT;
+		else
+			cpsr &= ~PSR_T_BIT;
+	}
+#endif
+
+	if (ka->sa.sa_flags & SA_RESTORER) {
+		retcode = (unsigned long)ka->sa.sa_restorer;
+	} else {
+		unsigned int idx = thumb;
+
+		if (ka->sa.sa_flags & SA_SIGINFO)
+			idx += 2;
+
+		if (__put_user(retcodes[idx], rc))
+			return 1;
+
+		/*
+		 * Ensure that the instruction cache sees
+		 * the return code written onto the stack.
+		 */
+		flush_icache_range((unsigned long)rc,
+				   (unsigned long)(rc + 1));
+
+		retcode = ((unsigned long)rc) + thumb;
+	}
+
+	regs->ARM_r0 = usig;
+	regs->ARM_sp = (unsigned long)frame;
+	regs->ARM_lr = retcode;
+	regs->ARM_pc = handler;
+	regs->ARM_cpsr = cpsr;
+
+	return 0;
+}
+
+static int
+setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, struct pt_regs *regs)
+{
+	struct sigframe __user *frame = get_sigframe(ka, regs, sizeof(*frame));
+	int err = 0;
+
+	if (!frame)
+		return 1;
+
+	err |= setup_sigcontext(&frame->sc, &frame->aux, regs, set->sig[0]);
+
+	if (_NSIG_WORDS > 1) {
+		err |= __copy_to_user(frame->extramask, &set->sig[1],
+				      sizeof(frame->extramask));
+	}
+
+	if (err == 0)
+		err = setup_return(regs, ka, &frame->retcode, frame, usig);
+
+	return err;
+}
+
+static int
+setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
+	       sigset_t *set, struct pt_regs *regs)
+{
+	struct rt_sigframe __user *frame = get_sigframe(ka, regs, sizeof(*frame));
+	stack_t stack;
+	int err = 0;
+
+	if (!frame)
+		return 1;
+
+	__put_user_error(&frame->info, &frame->pinfo, err);
+	__put_user_error(&frame->uc, &frame->puc, err);
+	err |= copy_siginfo_to_user(&frame->info, info);
+
+	__put_user_error(0, &frame->uc.uc_flags, err);
+	__put_user_error(NULL, &frame->uc.uc_link, err);
+
+	memset(&stack, 0, sizeof(stack));
+	stack.ss_sp = (void __user *)current->sas_ss_sp;
+	stack.ss_flags = sas_ss_flags(regs->ARM_sp);
+	stack.ss_size = current->sas_ss_size;
+	err |= __copy_to_user(&frame->uc.uc_stack, &stack, sizeof(stack));
+
+	err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->aux,
+				regs, set->sig[0]);
+	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
+	if (err == 0)
+		err = setup_return(regs, ka, &frame->retcode, frame, usig);
+
+	if (err == 0) {
+		/*
+		 * For realtime signals we must also set the second and third
+		 * arguments for the signal handler.
+		 *   -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06
+		 */
+		regs->ARM_r1 = (unsigned long)&frame->info;
+		regs->ARM_r2 = (unsigned long)&frame->uc;
+	}
+
+	return err;
+}
+
+static inline void restart_syscall(struct pt_regs *regs)
+{
+	regs->ARM_r0 = regs->ARM_ORIG_r0;
+	regs->ARM_pc -= thumb_mode(regs) ? 2 : 4;
+}
+
+/*
+ * OK, we're invoking a handler
+ */	
+static void
+handle_signal(unsigned long sig, struct k_sigaction *ka,
+	      siginfo_t *info, sigset_t *oldset,
+	      struct pt_regs * regs, int syscall)
+{
+	struct thread_info *thread = current_thread_info();
+	struct task_struct *tsk = current;
+	int usig = sig;
+	int ret;
+
+	/*
+	 * If we were from a system call, check for system call restarting...
+	 */
+	if (syscall) {
+		switch (regs->ARM_r0) {
+		case -ERESTART_RESTARTBLOCK:
+		case -ERESTARTNOHAND:
+			regs->ARM_r0 = -EINTR;
+			break;
+		case -ERESTARTSYS:
+			if (!(ka->sa.sa_flags & SA_RESTART)) {
+				regs->ARM_r0 = -EINTR;
+				break;
+			}
+			/* fallthrough */
+		case -ERESTARTNOINTR:
+			restart_syscall(regs);
+		}
+	}
+
+	/*
+	 * translate the signal
+	 */
+	if (usig < 32 && thread->exec_domain && thread->exec_domain->signal_invmap)
+		usig = thread->exec_domain->signal_invmap[usig];
+
+	/*
+	 * Set up the stack frame
+	 */
+	if (ka->sa.sa_flags & SA_SIGINFO)
+		ret = setup_rt_frame(usig, ka, info, oldset, regs);
+	else
+		ret = setup_frame(usig, ka, oldset, regs);
+
+	/*
+	 * Check that the resulting registers are actually sane.
+	 */
+	ret |= !valid_user_regs(regs);
+
+	/*
+	 * Block the signal if we were unsuccessful.
+	 */
+	if (ret != 0 || !(ka->sa.sa_flags & SA_NODEFER)) {
+		spin_lock_irq(&tsk->sighand->siglock);
+		sigorsets(&tsk->blocked, &tsk->blocked,
+			  &ka->sa.sa_mask);
+		sigaddset(&tsk->blocked, sig);
+		recalc_sigpending();
+		spin_unlock_irq(&tsk->sighand->siglock);
+	}
+
+	if (ret == 0)
+		return;
+
+	force_sigsegv(sig, tsk);
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ *
+ * Note that we go through the signals twice: once to check the signals that
+ * the kernel can handle, and then we build all the user-level signal handling
+ * stack-frames in one go after that.
+ */
+static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall)
+{
+	struct k_sigaction ka;
+	siginfo_t info;
+	int signr;
+
+	/*
+	 * We want the common case to go fast, which
+	 * is why we may in certain cases get here from
+	 * kernel mode. Just return without doing anything
+	 * if so.
+	 */
+	if (!user_mode(regs))
+		return 0;
+
+	if (try_to_freeze(0))
+		goto no_signal;
+
+	if (current->ptrace & PT_SINGLESTEP)
+		ptrace_cancel_bpt(current);
+
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+	if (signr > 0) {
+		handle_signal(signr, &ka, &info, oldset, regs, syscall);
+		if (current->ptrace & PT_SINGLESTEP)
+			ptrace_set_bpt(current);
+		return 1;
+	}
+
+ no_signal:
+	/*
+	 * No signal to deliver to the process - restart the syscall.
+	 */
+	if (syscall) {
+		if (regs->ARM_r0 == -ERESTART_RESTARTBLOCK) {
+			if (thumb_mode(regs)) {
+				regs->ARM_r7 = __NR_restart_syscall;
+				regs->ARM_pc -= 2;
+			} else {
+				u32 __user *usp;
+
+				regs->ARM_sp -= 12;
+				usp = (u32 __user *)regs->ARM_sp;
+
+				put_user(regs->ARM_pc, &usp[0]);
+				/* swi __NR_restart_syscall */
+				put_user(0xef000000 | __NR_restart_syscall, &usp[1]);
+				/* ldr	pc, [sp], #12 */
+				put_user(0xe49df00c, &usp[2]);
+
+				flush_icache_range((unsigned long)usp,
+						   (unsigned long)(usp + 3));
+
+				regs->ARM_pc = regs->ARM_sp + 4;
+			}
+		}
+		if (regs->ARM_r0 == -ERESTARTNOHAND ||
+		    regs->ARM_r0 == -ERESTARTSYS ||
+		    regs->ARM_r0 == -ERESTARTNOINTR) {
+			restart_syscall(regs);
+		}
+	}
+	if (current->ptrace & PT_SINGLESTEP)
+		ptrace_set_bpt(current);
+	return 0;
+}
+
+asmlinkage void
+do_notify_resume(struct pt_regs *regs, unsigned int thread_flags, int syscall)
+{
+	if (thread_flags & _TIF_SIGPENDING)
+		do_signal(&current->blocked, regs, syscall);
+}
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
new file mode 100644
index 000000000000..ecc8c3332408
--- /dev/null
+++ b/arch/arm/kernel/smp.c
@@ -0,0 +1,396 @@
+/*
+ *  linux/arch/arm/kernel/smp.c
+ *
+ *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/cache.h>
+#include <linux/profile.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/seq_file.h>
+
+#include <asm/atomic.h>
+#include <asm/cacheflush.h>
+#include <asm/cpu.h>
+#include <asm/processor.h>
+#include <asm/tlbflush.h>
+#include <asm/ptrace.h>
+
+/*
+ * bitmask of present and online CPUs.
+ * The present bitmask indicates that the CPU is physically present.
+ * The online bitmask indicates that the CPU is up and running.
+ */
+cpumask_t cpu_present_mask;
+cpumask_t cpu_online_map;
+
+/*
+ * structures for inter-processor calls
+ * - A collection of single bit ipi messages.
+ */
+struct ipi_data {
+	spinlock_t lock;
+	unsigned long ipi_count;
+	unsigned long bits;
+};
+
+static DEFINE_PER_CPU(struct ipi_data, ipi_data) = {
+	.lock	= SPIN_LOCK_UNLOCKED,
+};
+
+enum ipi_msg_type {
+	IPI_TIMER,
+	IPI_RESCHEDULE,
+	IPI_CALL_FUNC,
+	IPI_CPU_STOP,
+};
+
+struct smp_call_struct {
+	void (*func)(void *info);
+	void *info;
+	int wait;
+	cpumask_t pending;
+	cpumask_t unfinished;
+};
+
+static struct smp_call_struct * volatile smp_call_function_data;
+static DEFINE_SPINLOCK(smp_call_function_lock);
+
+int __init __cpu_up(unsigned int cpu)
+{
+	struct task_struct *idle;
+	int ret;
+
+	/*
+	 * Spawn a new process manually.  Grab a pointer to
+	 * its task struct so we can mess with it
+	 */
+	idle = fork_idle(cpu);
+	if (IS_ERR(idle)) {
+		printk(KERN_ERR "CPU%u: fork() failed\n", cpu);
+		return PTR_ERR(idle);
+	}
+
+	/*
+	 * Now bring the CPU into our world.
+	 */
+	ret = boot_secondary(cpu, idle);
+	if (ret) {
+		printk(KERN_CRIT "cpu_up: processor %d failed to boot\n", cpu);
+		/*
+		 * FIXME: We need to clean up the new idle thread. --rmk
+		 */
+	}
+
+	return ret;
+}
+
+/*
+ * Called by both boot and secondaries to move global data into
+ * per-processor storage.
+ */
+void __init smp_store_cpu_info(unsigned int cpuid)
+{
+	struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpuid);
+
+	cpu_info->loops_per_jiffy = loops_per_jiffy;
+}
+
+void __init smp_cpus_done(unsigned int max_cpus)
+{
+	int cpu;
+	unsigned long bogosum = 0;
+
+	for_each_online_cpu(cpu)
+		bogosum += per_cpu(cpu_data, cpu).loops_per_jiffy;
+
+	printk(KERN_INFO "SMP: Total of %d processors activated "
+	       "(%lu.%02lu BogoMIPS).\n",
+	       num_online_cpus(),
+	       bogosum / (500000/HZ),
+	       (bogosum / (5000/HZ)) % 100);
+}
+
+void __init smp_prepare_boot_cpu(void)
+{
+	unsigned int cpu = smp_processor_id();
+
+	cpu_set(cpu, cpu_present_mask);
+	cpu_set(cpu, cpu_online_map);
+}
+
+static void send_ipi_message(cpumask_t callmap, enum ipi_msg_type msg)
+{
+	unsigned long flags;
+	unsigned int cpu;
+
+	local_irq_save(flags);
+
+	for_each_cpu_mask(cpu, callmap) {
+		struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
+
+		spin_lock(&ipi->lock);
+		ipi->bits |= 1 << msg;
+		spin_unlock(&ipi->lock);
+	}
+
+	/*
+	 * Call the platform specific cross-CPU call function.
+	 */
+	smp_cross_call(callmap);
+
+	local_irq_restore(flags);
+}
+
+/*
+ * You must not call this function with disabled interrupts, from a
+ * hardware interrupt handler, nor from a bottom half handler.
+ */
+int smp_call_function_on_cpu(void (*func)(void *info), void *info, int retry,
+                             int wait, cpumask_t callmap)
+{
+	struct smp_call_struct data;
+	unsigned long timeout;
+	int ret = 0;
+
+	data.func = func;
+	data.info = info;
+	data.wait = wait;
+
+	cpu_clear(smp_processor_id(), callmap);
+	if (cpus_empty(callmap))
+		goto out;
+
+	data.pending = callmap;
+	if (wait)
+		data.unfinished = callmap;
+
+	/*
+	 * try to get the mutex on smp_call_function_data
+	 */
+	spin_lock(&smp_call_function_lock);
+	smp_call_function_data = &data;
+
+	send_ipi_message(callmap, IPI_CALL_FUNC);
+
+	timeout = jiffies + HZ;
+	while (!cpus_empty(data.pending) && time_before(jiffies, timeout))
+		barrier();
+
+	/*
+	 * did we time out?
+	 */
+	if (!cpus_empty(data.pending)) {
+		/*
+		 * this may be causing our panic - report it
+		 */
+		printk(KERN_CRIT
+		       "CPU%u: smp_call_function timeout for %p(%p)\n"
+		       "      callmap %lx pending %lx, %swait\n",
+		       smp_processor_id(), func, info, callmap, data.pending,
+		       wait ? "" : "no ");
+
+		/*
+		 * TRACE
+		 */
+		timeout = jiffies + (5 * HZ);
+		while (!cpus_empty(data.pending) && time_before(jiffies, timeout))
+			barrier();
+
+		if (cpus_empty(data.pending))
+			printk(KERN_CRIT "     RESOLVED\n");
+		else
+			printk(KERN_CRIT "     STILL STUCK\n");
+	}
+
+	/*
+	 * whatever happened, we're done with the data, so release it
+	 */
+	smp_call_function_data = NULL;
+	spin_unlock(&smp_call_function_lock);
+
+	if (!cpus_empty(data.pending)) {
+		ret = -ETIMEDOUT;
+		goto out;
+	}
+
+	if (wait)
+		while (!cpus_empty(data.unfinished))
+			barrier();
+ out:
+
+	return 0;
+}
+
+int smp_call_function(void (*func)(void *info), void *info, int retry,
+                      int wait)
+{
+	return smp_call_function_on_cpu(func, info, retry, wait,
+					cpu_online_map);
+}
+
+void show_ipi_list(struct seq_file *p)
+{
+	unsigned int cpu;
+
+	seq_puts(p, "IPI:");
+
+	for_each_online_cpu(cpu)
+		seq_printf(p, " %10lu", per_cpu(ipi_data, cpu).ipi_count);
+
+	seq_putc(p, '\n');
+}
+
+static void ipi_timer(struct pt_regs *regs)
+{
+	int user = user_mode(regs);
+
+	irq_enter();
+	profile_tick(CPU_PROFILING, regs);
+	update_process_times(user);
+	irq_exit();
+}
+
+/*
+ * ipi_call_function - handle IPI from smp_call_function()
+ *
+ * Note that we copy data out of the cross-call structure and then
+ * let the caller know that we're here and have done with their data
+ */
+static void ipi_call_function(unsigned int cpu)
+{
+	struct smp_call_struct *data = smp_call_function_data;
+	void (*func)(void *info) = data->func;
+	void *info = data->info;
+	int wait = data->wait;
+
+	cpu_clear(cpu, data->pending);
+
+	func(info);
+
+	if (wait)
+		cpu_clear(cpu, data->unfinished);
+}
+
+static DEFINE_SPINLOCK(stop_lock);
+
+/*
+ * ipi_cpu_stop - handle IPI from smp_send_stop()
+ */
+static void ipi_cpu_stop(unsigned int cpu)
+{
+	spin_lock(&stop_lock);
+	printk(KERN_CRIT "CPU%u: stopping\n", cpu);
+	dump_stack();
+	spin_unlock(&stop_lock);
+
+	cpu_clear(cpu, cpu_online_map);
+
+	local_fiq_disable();
+	local_irq_disable();
+
+	while (1)
+		cpu_relax();
+}
+
+/*
+ * Main handler for inter-processor interrupts
+ *
+ * For ARM, the ipimask now only identifies a single
+ * category of IPI (Bit 1 IPIs have been replaced by a
+ * different mechanism):
+ *
+ *  Bit 0 - Inter-processor function call
+ */
+void do_IPI(struct pt_regs *regs)
+{
+	unsigned int cpu = smp_processor_id();
+	struct ipi_data *ipi = &per_cpu(ipi_data, cpu);
+
+	ipi->ipi_count++;
+
+	for (;;) {
+		unsigned long msgs;
+
+		spin_lock(&ipi->lock);
+		msgs = ipi->bits;
+		ipi->bits = 0;
+		spin_unlock(&ipi->lock);
+
+		if (!msgs)
+			break;
+
+		do {
+			unsigned nextmsg;
+
+			nextmsg = msgs & -msgs;
+			msgs &= ~nextmsg;
+			nextmsg = ffz(~nextmsg);
+
+			switch (nextmsg) {
+			case IPI_TIMER:
+				ipi_timer(regs);
+				break;
+
+			case IPI_RESCHEDULE:
+				/*
+				 * nothing more to do - eveything is
+				 * done on the interrupt return path
+				 */
+				break;
+
+			case IPI_CALL_FUNC:
+				ipi_call_function(cpu);
+				break;
+
+			case IPI_CPU_STOP:
+				ipi_cpu_stop(cpu);
+				break;
+
+			default:
+				printk(KERN_CRIT "CPU%u: Unknown IPI message 0x%x\n",
+				       cpu, nextmsg);
+				break;
+			}
+		} while (msgs);
+	}
+}
+
+void smp_send_reschedule(int cpu)
+{
+	send_ipi_message(cpumask_of_cpu(cpu), IPI_RESCHEDULE);
+}
+
+void smp_send_timer(void)
+{
+	cpumask_t mask = cpu_online_map;
+	cpu_clear(smp_processor_id(), mask);
+	send_ipi_message(mask, IPI_TIMER);
+}
+
+void smp_send_stop(void)
+{
+	cpumask_t mask = cpu_online_map;
+	cpu_clear(smp_processor_id(), mask);
+	send_ipi_message(mask, IPI_CPU_STOP);
+}
+
+/*
+ * not supported here
+ */
+int __init setup_profiling_timer(unsigned int multiplier)
+{
+	return -EINVAL;
+}
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
new file mode 100644
index 000000000000..c41dc605f121
--- /dev/null
+++ b/arch/arm/kernel/sys_arm.c
@@ -0,0 +1,332 @@
+/*
+ *  linux/arch/arm/kernel/sys_arm.c
+ *
+ *  Copyright (C) People who wrote linux/arch/i386/kernel/sys_i386.c
+ *  Copyright (C) 1995, 1996 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  This file contains various random system calls that
+ *  have a non-standard calling sequence on the Linux/arm
+ *  platform.
+ */
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/syscalls.h>
+#include <linux/mman.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/utsname.h>
+
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+
+extern unsigned long do_mremap(unsigned long addr, unsigned long old_len,
+			       unsigned long new_len, unsigned long flags,
+			       unsigned long new_addr);
+
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+asmlinkage int sys_pipe(unsigned long __user *fildes)
+{
+	int fd[2];
+	int error;
+
+	error = do_pipe(fd);
+	if (!error) {
+		if (copy_to_user(fildes, fd, 2*sizeof(int)))
+			error = -EFAULT;
+	}
+	return error;
+}
+
+/*
+ * This is the lowest virtual address we can permit any user space
+ * mapping to be mapped at.  This is particularly important for
+ * non-high vector CPUs.
+ */
+#define MIN_MAP_ADDR	(PAGE_SIZE)
+
+/* common code for old and new mmaps */
+inline long do_mmap2(
+	unsigned long addr, unsigned long len,
+	unsigned long prot, unsigned long flags,
+	unsigned long fd, unsigned long pgoff)
+{
+	int error = -EINVAL;
+	struct file * file = NULL;
+
+	flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+
+	if (flags & MAP_FIXED && addr < MIN_MAP_ADDR)
+		goto out;
+
+	error = -EBADF;
+	if (!(flags & MAP_ANONYMOUS)) {
+		file = fget(fd);
+		if (!file)
+			goto out;
+	}
+
+	down_write(&current->mm->mmap_sem);
+	error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+	up_write(&current->mm->mmap_sem);
+
+	if (file)
+		fput(file);
+out:
+	return error;
+}
+
+struct mmap_arg_struct {
+	unsigned long addr;
+	unsigned long len;
+	unsigned long prot;
+	unsigned long flags;
+	unsigned long fd;
+	unsigned long offset;
+};
+
+asmlinkage int old_mmap(struct mmap_arg_struct __user *arg)
+{
+	int error = -EFAULT;
+	struct mmap_arg_struct a;
+
+	if (copy_from_user(&a, arg, sizeof(a)))
+		goto out;
+
+	error = -EINVAL;
+	if (a.offset & ~PAGE_MASK)
+		goto out;
+
+	error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+out:
+	return error;
+}
+
+asmlinkage unsigned long
+sys_arm_mremap(unsigned long addr, unsigned long old_len,
+	       unsigned long new_len, unsigned long flags,
+	       unsigned long new_addr)
+{
+	unsigned long ret = -EINVAL;
+
+	if (flags & MREMAP_FIXED && new_addr < MIN_MAP_ADDR)
+		goto out;
+
+	down_write(&current->mm->mmap_sem);
+	ret = do_mremap(addr, old_len, new_len, flags, new_addr);
+	up_write(&current->mm->mmap_sem);
+
+out:
+	return ret;
+}
+
+/*
+ * Perform the select(nd, in, out, ex, tv) and mmap() system
+ * calls.
+ */
+
+struct sel_arg_struct {
+	unsigned long n;
+	fd_set __user *inp, *outp, *exp;
+	struct timeval __user *tvp;
+};
+
+asmlinkage int old_select(struct sel_arg_struct __user *arg)
+{
+	struct sel_arg_struct a;
+
+	if (copy_from_user(&a, arg, sizeof(a)))
+		return -EFAULT;
+	/* sys_select() does the appropriate kernel locking */
+	return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
+}
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+asmlinkage int sys_ipc(uint call, int first, int second, int third,
+		       void __user *ptr, long fifth)
+{
+	int version, ret;
+
+	version = call >> 16; /* hack for backward compatibility */
+	call &= 0xffff;
+
+	switch (call) {
+	case SEMOP:
+		return sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL);
+	case SEMTIMEDOP:
+		return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
+					(const struct timespec __user *)fifth);
+
+	case SEMGET:
+		return sys_semget (first, second, third);
+	case SEMCTL: {
+		union semun fourth;
+		if (!ptr)
+			return -EINVAL;
+		if (get_user(fourth.__pad, (void __user * __user *) ptr))
+			return -EFAULT;
+		return sys_semctl (first, second, third, fourth);
+	}
+
+	case MSGSND:
+		return sys_msgsnd(first, (struct msgbuf __user *) ptr, 
+				  second, third);
+	case MSGRCV:
+		switch (version) {
+		case 0: {
+			struct ipc_kludge tmp;
+			if (!ptr)
+				return -EINVAL;
+			if (copy_from_user(&tmp,(struct ipc_kludge __user *)ptr,
+					   sizeof (tmp)))
+				return -EFAULT;
+			return sys_msgrcv (first, tmp.msgp, second,
+					   tmp.msgtyp, third);
+		}
+		default:
+			return sys_msgrcv (first,
+					   (struct msgbuf __user *) ptr,
+					   second, fifth, third);
+		}
+	case MSGGET:
+		return sys_msgget ((key_t) first, second);
+	case MSGCTL:
+		return sys_msgctl(first, second, (struct msqid_ds __user *)ptr);
+
+	case SHMAT:
+		switch (version) {
+		default: {
+			ulong raddr;
+			ret = do_shmat(first, (char __user *)ptr, second, &raddr);
+			if (ret)
+				return ret;
+			return put_user(raddr, (ulong __user *)third);
+		}
+		case 1: /* Of course, we don't support iBCS2! */
+			return -EINVAL;
+		}
+	case SHMDT: 
+		return sys_shmdt ((char __user *)ptr);
+	case SHMGET:
+		return sys_shmget (first, second, third);
+	case SHMCTL:
+		return sys_shmctl (first, second,
+				   (struct shmid_ds __user *) ptr);
+	default:
+		return -ENOSYS;
+	}
+}
+
+asmlinkage long sys_shmat(int shmid, char __user *shmaddr, int shmflg,
+			  unsigned long __user *addr)
+{
+	unsigned long ret;
+	long err;
+
+	err = do_shmat(shmid, shmaddr, shmflg, &ret);
+	if (err == 0)
+		err = put_user(ret, addr);
+	return err;
+}
+
+/* Fork a new task - this creates a new program thread.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage int sys_fork(struct pt_regs *regs)
+{
+	return do_fork(SIGCHLD, regs->ARM_sp, regs, 0, NULL, NULL);
+}
+
+/* Clone a task - this clones the calling program thread.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
+			 int __user *parent_tidptr, int tls_val,
+			 int __user *child_tidptr, struct pt_regs *regs)
+{
+	if (!newsp)
+		newsp = regs->ARM_sp;
+
+	return do_fork(clone_flags, newsp, regs, 0, parent_tidptr, child_tidptr);
+}
+
+asmlinkage int sys_vfork(struct pt_regs *regs)
+{
+	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->ARM_sp, regs, 0, NULL, NULL);
+}
+
+/* sys_execve() executes a new program.
+ * This is called indirectly via a small wrapper
+ */
+asmlinkage int sys_execve(char __user *filenamei, char __user * __user *argv,
+			  char __user * __user *envp, struct pt_regs *regs)
+{
+	int error;
+	char * filename;
+
+	filename = getname(filenamei);
+	error = PTR_ERR(filename);
+	if (IS_ERR(filename))
+		goto out;
+	error = do_execve(filename, argv, envp, regs);
+	putname(filename);
+out:
+	return error;
+}
+
+long execve(const char *filename, char **argv, char **envp)
+{
+	struct pt_regs regs;
+	int ret;
+
+	memset(&regs, 0, sizeof(struct pt_regs));
+	ret = do_execve((char *)filename, (char __user * __user *)argv,
+			(char __user * __user *)envp, &regs);
+	if (ret < 0)
+		goto out;
+
+	/*
+	 * Save argc to the register structure for userspace.
+	 */
+	regs.ARM_r0 = ret;
+
+	/*
+	 * We were successful.  We won't be returning to our caller, but
+	 * instead to user space by manipulating the kernel stack.
+	 */
+	asm(	"add	r0, %0, %1\n\t"
+		"mov	r1, %2\n\t"
+		"mov	r2, %3\n\t"
+		"bl	memmove\n\t"	/* copy regs to top of stack */
+		"mov	r8, #0\n\t"	/* not a syscall */
+		"mov	r9, %0\n\t"	/* thread structure */
+		"mov	sp, r0\n\t"	/* reposition stack pointer */
+		"b	ret_to_user"
+		:
+		: "r" (current_thread_info()),
+		  "Ir" (THREAD_SIZE - 8 - sizeof(regs)),
+		  "r" (&regs),
+		  "Ir" (sizeof(regs))
+		: "r0", "r1", "r2", "r3", "ip", "memory");
+
+ out:
+	return ret;
+}
+EXPORT_SYMBOL(execve);
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
new file mode 100644
index 000000000000..c232f24f4a60
--- /dev/null
+++ b/arch/arm/kernel/time.c
@@ -0,0 +1,402 @@
+/*
+ *  linux/arch/arm/kernel/time.c
+ *
+ *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
+ *  Modifications for ARM (C) 1994-2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  This file contains the ARM-specific time handling details:
+ *  reading the RTC at bootup, etc...
+ *
+ *  1994-07-02  Alan Modra
+ *              fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
+ *  1998-12-20  Updated NTP code according to technical memorandum Jan '96
+ *              "A Kernel Model for Precision Timekeeping" by Dave Mills
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/timex.h>
+#include <linux/errno.h>
+#include <linux/profile.h>
+#include <linux/sysdev.h>
+#include <linux/timer.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/leds.h>
+#include <asm/thread_info.h>
+#include <asm/mach/time.h>
+
+u64 jiffies_64 = INITIAL_JIFFIES;
+
+EXPORT_SYMBOL(jiffies_64);
+
+/*
+ * Our system timer.
+ */
+struct sys_timer *system_timer;
+
+extern unsigned long wall_jiffies;
+
+/* this needs a better home */
+DEFINE_SPINLOCK(rtc_lock);
+
+#ifdef CONFIG_SA1100_RTC_MODULE
+EXPORT_SYMBOL(rtc_lock);
+#endif
+
+/* change this if you have some constant time drift */
+#define USECS_PER_JIFFY	(1000000/HZ)
+
+#ifdef CONFIG_SMP
+unsigned long profile_pc(struct pt_regs *regs)
+{
+	unsigned long fp, pc = instruction_pointer(regs);
+
+	if (in_lock_functions(pc)) {
+		fp = regs->ARM_fp;
+		pc = pc_pointer(((unsigned long *)fp)[-1]);
+	}
+
+	return pc;
+}
+EXPORT_SYMBOL(profile_pc);
+#endif
+
+/*
+ * hook for setting the RTC's idea of the current time.
+ */
+int (*set_rtc)(void);
+
+static unsigned long dummy_gettimeoffset(void)
+{
+	return 0;
+}
+
+/*
+ * Scheduler clock - returns current time in nanosec units.
+ * This is the default implementation.  Sub-architecture
+ * implementations can override this.
+ */
+unsigned long long __attribute__((weak)) sched_clock(void)
+{
+	return (unsigned long long)jiffies * (1000000000 / HZ);
+}
+
+static unsigned long next_rtc_update;
+
+/*
+ * If we have an externally synchronized linux clock, then update
+ * CMOS clock accordingly every ~11 minutes.  set_rtc() has to be
+ * called as close as possible to 500 ms before the new second
+ * starts.
+ */
+static inline void do_set_rtc(void)
+{
+	if (time_status & STA_UNSYNC || set_rtc == NULL)
+		return;
+
+	if (next_rtc_update &&
+	    time_before((unsigned long)xtime.tv_sec, next_rtc_update))
+		return;
+
+	if (xtime.tv_nsec < 500000000 - ((unsigned) tick_nsec >> 1) &&
+	    xtime.tv_nsec >= 500000000 + ((unsigned) tick_nsec >> 1))
+		return;
+
+	if (set_rtc())
+		/*
+		 * rtc update failed.  Try again in 60s
+		 */
+		next_rtc_update = xtime.tv_sec + 60;
+	else
+		next_rtc_update = xtime.tv_sec + 660;
+}
+
+#ifdef CONFIG_LEDS
+
+static void dummy_leds_event(led_event_t evt)
+{
+}
+
+void (*leds_event)(led_event_t) = dummy_leds_event;
+
+struct leds_evt_name {
+	const char	name[8];
+	int		on;
+	int		off;
+};
+
+static const struct leds_evt_name evt_names[] = {
+	{ "amber", led_amber_on, led_amber_off },
+	{ "blue",  led_blue_on,  led_blue_off  },
+	{ "green", led_green_on, led_green_off },
+	{ "red",   led_red_on,   led_red_off   },
+};
+
+static ssize_t leds_store(struct sys_device *dev, const char *buf, size_t size)
+{
+	int ret = -EINVAL, len = strcspn(buf, " ");
+
+	if (len > 0 && buf[len] == '\0')
+		len--;
+
+	if (strncmp(buf, "claim", len) == 0) {
+		leds_event(led_claim);
+		ret = size;
+	} else if (strncmp(buf, "release", len) == 0) {
+		leds_event(led_release);
+		ret = size;
+	} else {
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
+			if (strlen(evt_names[i].name) != len ||
+			    strncmp(buf, evt_names[i].name, len) != 0)
+				continue;
+			if (strncmp(buf+len, " on", 3) == 0) {
+				leds_event(evt_names[i].on);
+				ret = size;
+			} else if (strncmp(buf+len, " off", 4) == 0) {
+				leds_event(evt_names[i].off);
+				ret = size;
+			}
+			break;
+		}
+	}
+	return ret;
+}
+
+static SYSDEV_ATTR(event, 0200, NULL, leds_store);
+
+static int leds_suspend(struct sys_device *dev, pm_message_t state)
+{
+	leds_event(led_stop);
+	return 0;
+}
+
+static int leds_resume(struct sys_device *dev)
+{
+	leds_event(led_start);
+	return 0;
+}
+
+static int leds_shutdown(struct sys_device *dev)
+{
+	leds_event(led_halted);
+	return 0;
+}
+
+static struct sysdev_class leds_sysclass = {
+	set_kset_name("leds"),
+	.shutdown	= leds_shutdown,
+	.suspend	= leds_suspend,
+	.resume		= leds_resume,
+};
+
+static struct sys_device leds_device = {
+	.id		= 0,
+	.cls		= &leds_sysclass,
+};
+
+static int __init leds_init(void)
+{
+	int ret;
+	ret = sysdev_class_register(&leds_sysclass);
+	if (ret == 0)
+		ret = sysdev_register(&leds_device);
+	if (ret == 0)
+		ret = sysdev_create_file(&leds_device, &attr_event);
+	return ret;
+}
+
+device_initcall(leds_init);
+
+EXPORT_SYMBOL(leds_event);
+#endif
+
+#ifdef CONFIG_LEDS_TIMER
+static inline void do_leds(void)
+{
+	static unsigned int count = 50;
+
+	if (--count == 0) {
+		count = 50;
+		leds_event(led_timer);
+	}
+}
+#else
+#define	do_leds()
+#endif
+
+void do_gettimeofday(struct timeval *tv)
+{
+	unsigned long flags;
+	unsigned long seq;
+	unsigned long usec, sec, lost;
+
+	do {
+		seq = read_seqbegin_irqsave(&xtime_lock, flags);
+		usec = system_timer->offset();
+
+		lost = jiffies - wall_jiffies;
+		if (lost)
+			usec += lost * USECS_PER_JIFFY;
+
+		sec = xtime.tv_sec;
+		usec += xtime.tv_nsec / 1000;
+	} while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
+
+	/* usec may have gone up a lot: be safe */
+	while (usec >= 1000000) {
+		usec -= 1000000;
+		sec++;
+	}
+
+	tv->tv_sec = sec;
+	tv->tv_usec = usec;
+}
+
+EXPORT_SYMBOL(do_gettimeofday);
+
+int do_settimeofday(struct timespec *tv)
+{
+	time_t wtm_sec, sec = tv->tv_sec;
+	long wtm_nsec, nsec = tv->tv_nsec;
+
+	if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
+		return -EINVAL;
+
+	write_seqlock_irq(&xtime_lock);
+	/*
+	 * This is revolting. We need to set "xtime" correctly. However, the
+	 * value in this location is the value at the most recent update of
+	 * wall time.  Discover what correction gettimeofday() would have
+	 * done, and then undo it!
+	 */
+	nsec -= system_timer->offset() * NSEC_PER_USEC;
+	nsec -= (jiffies - wall_jiffies) * TICK_NSEC;
+
+	wtm_sec  = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
+	wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
+
+	set_normalized_timespec(&xtime, sec, nsec);
+	set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
+
+	time_adjust = 0;		/* stop active adjtime() */
+	time_status |= STA_UNSYNC;
+	time_maxerror = NTP_PHASE_LIMIT;
+	time_esterror = NTP_PHASE_LIMIT;
+	write_sequnlock_irq(&xtime_lock);
+	clock_was_set();
+	return 0;
+}
+
+EXPORT_SYMBOL(do_settimeofday);
+
+/**
+ * save_time_delta - Save the offset between system time and RTC time
+ * @delta: pointer to timespec to store delta
+ * @rtc: pointer to timespec for current RTC time
+ *
+ * Return a delta between the system time and the RTC time, such
+ * that system time can be restored later with restore_time_delta()
+ */
+void save_time_delta(struct timespec *delta, struct timespec *rtc)
+{
+	set_normalized_timespec(delta,
+				xtime.tv_sec - rtc->tv_sec,
+				xtime.tv_nsec - rtc->tv_nsec);
+}
+EXPORT_SYMBOL(save_time_delta);
+
+/**
+ * restore_time_delta - Restore the current system time
+ * @delta: delta returned by save_time_delta()
+ * @rtc: pointer to timespec for current RTC time
+ */
+void restore_time_delta(struct timespec *delta, struct timespec *rtc)
+{
+	struct timespec ts;
+
+	set_normalized_timespec(&ts,
+				delta->tv_sec + rtc->tv_sec,
+				delta->tv_nsec + rtc->tv_nsec);
+
+	do_settimeofday(&ts);
+}
+EXPORT_SYMBOL(restore_time_delta);
+
+/*
+ * Kernel system timer support.
+ */
+void timer_tick(struct pt_regs *regs)
+{
+	profile_tick(CPU_PROFILING, regs);
+	do_leds();
+	do_set_rtc();
+	do_timer(regs);
+#ifndef CONFIG_SMP
+	update_process_times(user_mode(regs));
+#endif
+}
+
+#ifdef CONFIG_PM
+static int timer_suspend(struct sys_device *dev, pm_message_t state)
+{
+	struct sys_timer *timer = container_of(dev, struct sys_timer, dev);
+
+	if (timer->suspend != NULL)
+		timer->suspend();
+
+	return 0;
+}
+
+static int timer_resume(struct sys_device *dev)
+{
+	struct sys_timer *timer = container_of(dev, struct sys_timer, dev);
+
+	if (timer->resume != NULL)
+		timer->resume();
+
+	return 0;
+}
+#else
+#define timer_suspend NULL
+#define timer_resume NULL
+#endif
+
+static struct sysdev_class timer_sysclass = {
+	set_kset_name("timer"),
+	.suspend	= timer_suspend,
+	.resume		= timer_resume,
+};
+
+static int __init timer_init_sysfs(void)
+{
+	int ret = sysdev_class_register(&timer_sysclass);
+	if (ret == 0) {
+		system_timer->dev.cls = &timer_sysclass;
+		ret = sysdev_register(&system_timer->dev);
+	}
+	return ret;
+}
+
+device_initcall(timer_init_sysfs);
+
+void __init time_init(void)
+{
+	if (system_timer->offset == NULL)
+		system_timer->offset = dummy_gettimeoffset;
+	system_timer->init();
+}
+
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
new file mode 100644
index 000000000000..93dc4646cd7f
--- /dev/null
+++ b/arch/arm/kernel/traps.c
@@ -0,0 +1,590 @@
+/*
+ *  linux/arch/arm/kernel/traps.c
+ *
+ *  Copyright (C) 1995-2002 Russell King
+ *  Fragments that appear the same as linux/arch/i386/kernel/traps.c (C) Linus Torvalds
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  'traps.c' handles hardware exceptions after we have saved some state in
+ *  'linux/arch/arm/lib/traps.S'.  Mostly a debugging aid, but will probably
+ *  kill the offending process.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/spinlock.h>
+#include <linux/personality.h>
+#include <linux/ptrace.h>
+#include <linux/kallsyms.h>
+#include <linux/init.h>
+
+#include <asm/atomic.h>
+#include <asm/cacheflush.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/unistd.h>
+#include <asm/traps.h>
+
+#include "ptrace.h"
+
+extern void c_backtrace (unsigned long fp, int pmode);
+extern void show_pte(struct mm_struct *mm, unsigned long addr);
+
+const char *processor_modes[]=
+{ "USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
+  "UK8_26" , "UK9_26" , "UK10_26", "UK11_26", "UK12_26", "UK13_26", "UK14_26", "UK15_26",
+  "USER_32", "FIQ_32" , "IRQ_32" , "SVC_32" , "UK4_32" , "UK5_32" , "UK6_32" , "ABT_32" ,
+  "UK8_32" , "UK9_32" , "UK10_32", "UND_32" , "UK12_32", "UK13_32", "UK14_32", "SYS_32"
+};
+
+static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" };
+
+#ifdef CONFIG_DEBUG_USER
+unsigned int user_debug;
+
+static int __init user_debug_setup(char *str)
+{
+	get_option(&str, &user_debug);
+	return 1;
+}
+__setup("user_debug=", user_debug_setup);
+#endif
+
+void dump_backtrace_entry(unsigned long where, unsigned long from)
+{
+#ifdef CONFIG_KALLSYMS
+	printk("[<%08lx>] ", where);
+	print_symbol("(%s) ", where);
+	printk("from [<%08lx>] ", from);
+	print_symbol("(%s)\n", from);
+#else
+	printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
+#endif
+}
+
+/*
+ * Stack pointers should always be within the kernels view of
+ * physical memory.  If it is not there, then we can't dump
+ * out any information relating to the stack.
+ */
+static int verify_stack(unsigned long sp)
+{
+	if (sp < PAGE_OFFSET || (sp > (unsigned long)high_memory && high_memory != 0))
+		return -EFAULT;
+
+	return 0;
+}
+
+/*
+ * Dump out the contents of some memory nicely...
+ */
+static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
+{
+	unsigned long p = bottom & ~31;
+	mm_segment_t fs;
+	int i;
+
+	/*
+	 * We need to switch to kernel mode so that we can use __get_user
+	 * to safely read from kernel space.  Note that we now dump the
+	 * code first, just in case the backtrace kills us.
+	 */
+	fs = get_fs();
+	set_fs(KERNEL_DS);
+
+	printk("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
+
+	for (p = bottom & ~31; p < top;) {
+		printk("%04lx: ", p & 0xffff);
+
+		for (i = 0; i < 8; i++, p += 4) {
+			unsigned int val;
+
+			if (p < bottom || p >= top)
+				printk("         ");
+			else {
+				__get_user(val, (unsigned long *)p);
+				printk("%08x ", val);
+			}
+		}
+		printk ("\n");
+	}
+
+	set_fs(fs);
+}
+
+static void dump_instr(struct pt_regs *regs)
+{
+	unsigned long addr = instruction_pointer(regs);
+	const int thumb = thumb_mode(regs);
+	const int width = thumb ? 4 : 8;
+	mm_segment_t fs;
+	int i;
+
+	/*
+	 * We need to switch to kernel mode so that we can use __get_user
+	 * to safely read from kernel space.  Note that we now dump the
+	 * code first, just in case the backtrace kills us.
+	 */
+	fs = get_fs();
+	set_fs(KERNEL_DS);
+
+	printk("Code: ");
+	for (i = -4; i < 1; i++) {
+		unsigned int val, bad;
+
+		if (thumb)
+			bad = __get_user(val, &((u16 *)addr)[i]);
+		else
+			bad = __get_user(val, &((u32 *)addr)[i]);
+
+		if (!bad)
+			printk(i == 0 ? "(%0*x) " : "%0*x ", width, val);
+		else {
+			printk("bad PC value.");
+			break;
+		}
+	}
+	printk("\n");
+
+	set_fs(fs);
+}
+
+static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
+{
+	unsigned int fp;
+	int ok = 1;
+
+	printk("Backtrace: ");
+	fp = regs->ARM_fp;
+	if (!fp) {
+		printk("no frame pointer");
+		ok = 0;
+	} else if (verify_stack(fp)) {
+		printk("invalid frame pointer 0x%08x", fp);
+		ok = 0;
+	} else if (fp < (unsigned long)(tsk->thread_info + 1))
+		printk("frame pointer underflow");
+	printk("\n");
+
+	if (ok)
+		c_backtrace(fp, processor_mode(regs));
+}
+
+void dump_stack(void)
+{
+#ifdef CONFIG_DEBUG_ERRORS
+	__backtrace();
+#endif
+}
+
+EXPORT_SYMBOL(dump_stack);
+
+void show_stack(struct task_struct *tsk, unsigned long *sp)
+{
+	unsigned long fp;
+
+	if (!tsk)
+		tsk = current;
+
+	if (tsk != current)
+		fp = thread_saved_fp(tsk);
+	else
+		asm("mov%? %0, fp" : "=r" (fp));
+
+	c_backtrace(fp, 0x10);
+	barrier();
+}
+
+DEFINE_SPINLOCK(die_lock);
+
+/*
+ * This function is protected against re-entrancy.
+ */
+NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
+{
+	struct task_struct *tsk = current;
+	static int die_counter;
+
+	console_verbose();
+	spin_lock_irq(&die_lock);
+	bust_spinlocks(1);
+
+	printk("Internal error: %s: %x [#%d]\n", str, err, ++die_counter);
+	print_modules();
+	printk("CPU: %d\n", smp_processor_id());
+	show_regs(regs);
+	printk("Process %s (pid: %d, stack limit = 0x%p)\n",
+		tsk->comm, tsk->pid, tsk->thread_info + 1);
+
+	if (!user_mode(regs) || in_interrupt()) {
+		dump_mem("Stack: ", regs->ARM_sp, 8192+(unsigned long)tsk->thread_info);
+		dump_backtrace(regs, tsk);
+		dump_instr(regs);
+	}
+
+	bust_spinlocks(0);
+	spin_unlock_irq(&die_lock);
+	do_exit(SIGSEGV);
+}
+
+void die_if_kernel(const char *str, struct pt_regs *regs, int err)
+{
+	if (user_mode(regs))
+    		return;
+
+    	die(str, regs, err);
+}
+
+static void notify_die(const char *str, struct pt_regs *regs, siginfo_t *info,
+		       unsigned long err, unsigned long trap)
+{
+	if (user_mode(regs)) {
+		current->thread.error_code = err;
+		current->thread.trap_no = trap;
+
+		force_sig_info(info->si_signo, info, current);
+	} else {
+		die(str, regs, err);
+	}
+}
+
+static LIST_HEAD(undef_hook);
+static DEFINE_SPINLOCK(undef_lock);
+
+void register_undef_hook(struct undef_hook *hook)
+{
+	spin_lock_irq(&undef_lock);
+	list_add(&hook->node, &undef_hook);
+	spin_unlock_irq(&undef_lock);
+}
+
+void unregister_undef_hook(struct undef_hook *hook)
+{
+	spin_lock_irq(&undef_lock);
+	list_del(&hook->node);
+	spin_unlock_irq(&undef_lock);
+}
+
+asmlinkage void do_undefinstr(struct pt_regs *regs)
+{
+	unsigned int correction = thumb_mode(regs) ? 2 : 4;
+	unsigned int instr;
+	struct undef_hook *hook;
+	siginfo_t info;
+	void __user *pc;
+
+	/*
+	 * According to the ARM ARM, PC is 2 or 4 bytes ahead,
+	 * depending whether we're in Thumb mode or not.
+	 * Correct this offset.
+	 */
+	regs->ARM_pc -= correction;
+
+	pc = (void __user *)instruction_pointer(regs);
+	if (thumb_mode(regs)) {
+		get_user(instr, (u16 __user *)pc);
+	} else {
+		get_user(instr, (u32 __user *)pc);
+	}
+
+	spin_lock_irq(&undef_lock);
+	list_for_each_entry(hook, &undef_hook, node) {
+		if ((instr & hook->instr_mask) == hook->instr_val &&
+		    (regs->ARM_cpsr & hook->cpsr_mask) == hook->cpsr_val) {
+			if (hook->fn(regs, instr) == 0) {
+				spin_unlock_irq(&undef_lock);
+				return;
+			}
+		}
+	}
+	spin_unlock_irq(&undef_lock);
+
+#ifdef CONFIG_DEBUG_USER
+	if (user_debug & UDBG_UNDEFINED) {
+		printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n",
+			current->comm, current->pid, pc);
+		dump_instr(regs);
+	}
+#endif
+
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code  = ILL_ILLOPC;
+	info.si_addr  = pc;
+
+	notify_die("Oops - undefined instruction", regs, &info, 0, 6);
+}
+
+asmlinkage void do_unexp_fiq (struct pt_regs *regs)
+{
+#ifndef CONFIG_IGNORE_FIQ
+	printk("Hmm.  Unexpected FIQ received, but trying to continue\n");
+	printk("You may have a hardware problem...\n");
+#endif
+}
+
+/*
+ * bad_mode handles the impossible case in the vectors.  If you see one of
+ * these, then it's extremely serious, and could mean you have buggy hardware.
+ * It never returns, and never tries to sync.  We hope that we can at least
+ * dump out some state information...
+ */
+asmlinkage void bad_mode(struct pt_regs *regs, int reason, int proc_mode)
+{
+	console_verbose();
+
+	printk(KERN_CRIT "Bad mode in %s handler detected: mode %s\n",
+		handler[reason], processor_modes[proc_mode]);
+
+	die("Oops - bad mode", regs, 0);
+	local_irq_disable();
+	panic("bad mode");
+}
+
+static int bad_syscall(int n, struct pt_regs *regs)
+{
+	struct thread_info *thread = current_thread_info();
+	siginfo_t info;
+
+	if (current->personality != PER_LINUX && thread->exec_domain->handler) {
+		thread->exec_domain->handler(n, regs);
+		return regs->ARM_r0;
+	}
+
+#ifdef CONFIG_DEBUG_USER
+	if (user_debug & UDBG_SYSCALL) {
+		printk(KERN_ERR "[%d] %s: obsolete system call %08x.\n",
+			current->pid, current->comm, n);
+		dump_instr(regs);
+	}
+#endif
+
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code  = ILL_ILLTRP;
+	info.si_addr  = (void __user *)instruction_pointer(regs) -
+			 (thumb_mode(regs) ? 2 : 4);
+
+	notify_die("Oops - bad syscall", regs, &info, n, 0);
+
+	return regs->ARM_r0;
+}
+
+static inline void
+do_cache_op(unsigned long start, unsigned long end, int flags)
+{
+	struct vm_area_struct *vma;
+
+	if (end < start || flags)
+		return;
+
+	vma = find_vma(current->active_mm, start);
+	if (vma && vma->vm_start < end) {
+		if (start < vma->vm_start)
+			start = vma->vm_start;
+		if (end > vma->vm_end)
+			end = vma->vm_end;
+
+		flush_cache_user_range(vma, start, end);
+	}
+}
+
+/*
+ * Handle all unrecognised system calls.
+ *  0x9f0000 - 0x9fffff are some more esoteric system calls
+ */
+#define NR(x) ((__ARM_NR_##x) - __ARM_NR_BASE)
+asmlinkage int arm_syscall(int no, struct pt_regs *regs)
+{
+	struct thread_info *thread = current_thread_info();
+	siginfo_t info;
+
+	if ((no >> 16) != 0x9f)
+		return bad_syscall(no, regs);
+
+	switch (no & 0xffff) {
+	case 0: /* branch through 0 */
+		info.si_signo = SIGSEGV;
+		info.si_errno = 0;
+		info.si_code  = SEGV_MAPERR;
+		info.si_addr  = NULL;
+
+		notify_die("branch through zero", regs, &info, 0, 0);
+		return 0;
+
+	case NR(breakpoint): /* SWI BREAK_POINT */
+		regs->ARM_pc -= thumb_mode(regs) ? 2 : 4;
+		ptrace_break(current, regs);
+		return regs->ARM_r0;
+
+	/*
+	 * Flush a region from virtual address 'r0' to virtual address 'r1'
+	 * _exclusive_.  There is no alignment requirement on either address;
+	 * user space does not need to know the hardware cache layout.
+	 *
+	 * r2 contains flags.  It should ALWAYS be passed as ZERO until it
+	 * is defined to be something else.  For now we ignore it, but may
+	 * the fires of hell burn in your belly if you break this rule. ;)
+	 *
+	 * (at a later date, we may want to allow this call to not flush
+	 * various aspects of the cache.  Passing '0' will guarantee that
+	 * everything necessary gets flushed to maintain consistency in
+	 * the specified region).
+	 */
+	case NR(cacheflush):
+		do_cache_op(regs->ARM_r0, regs->ARM_r1, regs->ARM_r2);
+		return 0;
+
+	case NR(usr26):
+		if (!(elf_hwcap & HWCAP_26BIT))
+			break;
+		regs->ARM_cpsr &= ~MODE32_BIT;
+		return regs->ARM_r0;
+
+	case NR(usr32):
+		if (!(elf_hwcap & HWCAP_26BIT))
+			break;
+		regs->ARM_cpsr |= MODE32_BIT;
+		return regs->ARM_r0;
+
+	case NR(set_tls):
+		thread->tp_value = regs->ARM_r0;
+		/*
+		 * Our user accessible TLS ptr is located at 0xffff0ffc.
+		 * On SMP read access to this address must raise a fault
+		 * and be emulated from the data abort handler.
+		 * m
+		 */
+		*((unsigned long *)0xffff0ffc) = thread->tp_value;
+		return 0;
+
+	default:
+		/* Calls 9f00xx..9f07ff are defined to return -ENOSYS
+		   if not implemented, rather than raising SIGILL.  This
+		   way the calling program can gracefully determine whether
+		   a feature is supported.  */
+		if (no <= 0x7ff)
+			return -ENOSYS;
+		break;
+	}
+#ifdef CONFIG_DEBUG_USER
+	/*
+	 * experience shows that these seem to indicate that
+	 * something catastrophic has happened
+	 */
+	if (user_debug & UDBG_SYSCALL) {
+		printk("[%d] %s: arm syscall %d\n",
+		       current->pid, current->comm, no);
+		dump_instr(regs);
+		if (user_mode(regs)) {
+			show_regs(regs);
+			c_backtrace(regs->ARM_fp, processor_mode(regs));
+		}
+	}
+#endif
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code  = ILL_ILLTRP;
+	info.si_addr  = (void __user *)instruction_pointer(regs) -
+			 (thumb_mode(regs) ? 2 : 4);
+
+	notify_die("Oops - bad syscall(2)", regs, &info, no, 0);
+	return 0;
+}
+
+void __bad_xchg(volatile void *ptr, int size)
+{
+	printk("xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n",
+		__builtin_return_address(0), ptr, size);
+	BUG();
+}
+EXPORT_SYMBOL(__bad_xchg);
+
+/*
+ * A data abort trap was taken, but we did not handle the instruction.
+ * Try to abort the user program, or panic if it was the kernel.
+ */
+asmlinkage void
+baddataabort(int code, unsigned long instr, struct pt_regs *regs)
+{
+	unsigned long addr = instruction_pointer(regs);
+	siginfo_t info;
+
+#ifdef CONFIG_DEBUG_USER
+	if (user_debug & UDBG_BADABORT) {
+		printk(KERN_ERR "[%d] %s: bad data abort: code %d instr 0x%08lx\n",
+			current->pid, current->comm, code, instr);
+		dump_instr(regs);
+		show_pte(current->mm, addr);
+	}
+#endif
+
+	info.si_signo = SIGILL;
+	info.si_errno = 0;
+	info.si_code  = ILL_ILLOPC;
+	info.si_addr  = (void __user *)addr;
+
+	notify_die("unknown data abort code", regs, &info, instr, 0);
+}
+
+volatile void __bug(const char *file, int line, void *data)
+{
+	printk(KERN_CRIT"kernel BUG at %s:%d!", file, line);
+	if (data)
+		printk(" - extra data = %p", data);
+	printk("\n");
+	*(int *)0 = 0;
+}
+EXPORT_SYMBOL(__bug);
+
+void __readwrite_bug(const char *fn)
+{
+	printk("%s called, but not implemented\n", fn);
+	BUG();
+}
+EXPORT_SYMBOL(__readwrite_bug);
+
+void __pte_error(const char *file, int line, unsigned long val)
+{
+	printk("%s:%d: bad pte %08lx.\n", file, line, val);
+}
+
+void __pmd_error(const char *file, int line, unsigned long val)
+{
+	printk("%s:%d: bad pmd %08lx.\n", file, line, val);
+}
+
+void __pgd_error(const char *file, int line, unsigned long val)
+{
+	printk("%s:%d: bad pgd %08lx.\n", file, line, val);
+}
+
+asmlinkage void __div0(void)
+{
+	printk("Division by zero in kernel.\n");
+	dump_stack();
+}
+EXPORT_SYMBOL(__div0);
+
+void abort(void)
+{
+	BUG();
+
+	/* if that doesn't kill us, halt */
+	panic("Oops failed to kill thread");
+}
+EXPORT_SYMBOL(abort);
+
+void __init trap_init(void)
+{
+	extern void __trap_init(void);
+
+	__trap_init();
+	flush_icache_range(0xffff0000, 0xffff0000 + PAGE_SIZE);
+	modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
+}
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
new file mode 100644
index 000000000000..a39c6a42d68a
--- /dev/null
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -0,0 +1,166 @@
+/* ld script to make ARM Linux kernel
+ * taken from the i386 version by Russell King
+ * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
+ */
+
+#include <asm-generic/vmlinux.lds.h>
+#include <linux/config.h>
+	
+OUTPUT_ARCH(arm)
+ENTRY(stext)
+#ifndef __ARMEB__
+jiffies = jiffies_64;
+#else
+jiffies = jiffies_64 + 4;
+#endif
+SECTIONS
+{
+	. = TEXTADDR;
+	.init : {			/* Init code and data		*/
+		_stext = .;
+			_sinittext = .;
+			*(.init.text)
+			_einittext = .;
+		__proc_info_begin = .;
+			*(.proc.info)
+		__proc_info_end = .;
+		__arch_info_begin = .;
+			*(.arch.info)
+		__arch_info_end = .;
+		__tagtable_begin = .;
+			*(.taglist)
+		__tagtable_end = .;
+		. = ALIGN(16);
+		__setup_start = .;
+			*(.init.setup)
+		__setup_end = .;
+		__early_begin = .;
+			*(__early_param)
+		__early_end = .;
+		__initcall_start = .;
+			*(.initcall1.init)
+			*(.initcall2.init)
+			*(.initcall3.init)
+			*(.initcall4.init)
+			*(.initcall5.init)
+			*(.initcall6.init)
+			*(.initcall7.init)
+		__initcall_end = .;
+		__con_initcall_start = .;
+			*(.con_initcall.init)
+		__con_initcall_end = .;
+		__security_initcall_start = .;
+			*(.security_initcall.init)
+		__security_initcall_end = .;
+		. = ALIGN(32);
+		__initramfs_start = .;
+			usr/built-in.o(.init.ramfs)
+		__initramfs_end = .;
+		. = ALIGN(64);
+		__per_cpu_start = .;
+			*(.data.percpu)
+		__per_cpu_end = .;
+#ifndef CONFIG_XIP_KERNEL
+		__init_begin = _stext;
+		*(.init.data)
+		. = ALIGN(4096);
+		__init_end = .;
+#endif
+	}
+
+	/DISCARD/ : {			/* Exit code and data		*/
+		*(.exit.text)
+		*(.exit.data)
+		*(.exitcall.exit)
+	}
+
+	.text : {			/* Real text segment		*/
+		_text = .;		/* Text and read-only data	*/
+			*(.text)
+			SCHED_TEXT
+			LOCK_TEXT
+			*(.fixup)
+			*(.gnu.warning)
+			*(.rodata)
+			*(.rodata.*)
+			*(.glue_7)
+			*(.glue_7t)
+		*(.got)			/* Global offset table		*/
+	}
+
+	. = ALIGN(16);
+	__ex_table : {			/* Exception table		*/
+		__start___ex_table = .;
+			*(__ex_table)
+		__stop___ex_table = .;
+	}
+
+	RODATA
+
+	_etext = .;			/* End of text and rodata section */
+
+#ifdef CONFIG_XIP_KERNEL
+	__data_loc = ALIGN(4);		/* location in binary */
+	. = DATAADDR;
+#else
+	. = ALIGN(8192);
+	__data_loc = .;
+#endif
+
+	.data : AT(__data_loc) {
+		__data_start = .;	/* address in memory */
+
+		/*
+		 * first, the init task union, aligned
+		 * to an 8192 byte boundary.
+		 */
+		*(.init.task)
+
+#ifdef CONFIG_XIP_KERNEL
+		. = ALIGN(4096);
+		__init_begin = .;
+		*(.init.data)
+		. = ALIGN(4096);
+		__init_end = .;
+#endif
+
+		. = ALIGN(4096);
+		__nosave_begin = .;
+		*(.data.nosave)
+		. = ALIGN(4096);
+		__nosave_end = .;
+
+		/*
+		 * then the cacheline aligned data
+		 */
+		. = ALIGN(32);
+		*(.data.cacheline_aligned)
+
+		/*
+		 * and the usual data section
+		 */
+		*(.data)
+		CONSTRUCTORS
+
+		_edata = .;
+	}
+
+	.bss : {
+		__bss_start = .;	/* BSS				*/
+		*(.bss)
+		*(COMMON)
+		_end = .;
+	}
+					/* Stabs debugging sections.	*/
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+}
+
+/* those must never be empty */
+ASSERT((__proc_info_end - __proc_info_begin), "missing CPU support")
+ASSERT((__arch_info_end - __arch_info_begin), "no machine record defined")