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-rw-r--r--arch/arm/kernel/setup.c363
1 files changed, 205 insertions, 158 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 8258bd767..b09b3798b 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -10,36 +10,27 @@
*/
#include <linux/config.h>
-#include <linux/errno.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/malloc.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/delay.h>
-#include <linux/major.h>
#include <linux/utsname.h>
#include <linux/blk.h>
-#include <linux/init.h>
#include <linux/console.h>
+#include <linux/init.h>
#include <asm/elf.h>
#include <asm/hardware.h>
#include <asm/io.h>
-#include <asm/pgtable.h>
#include <asm/procinfo.h>
-#include <asm/segment.h>
#include <asm/setup.h>
#include <asm/system.h>
+#ifndef MEM_SIZE
#define MEM_SIZE (16*1024*1024)
-#define COMMAND_LINE_SIZE 256
+#endif
#ifndef CONFIG_CMDLINE
#define CONFIG_CMDLINE ""
@@ -50,7 +41,6 @@
#endif
extern void reboot_setup(char *str, int *ints);
-extern void fpe_init(void);
extern void disable_hlt(void);
struct drive_info_struct { char dummy[32]; } drive_info;
@@ -64,10 +54,9 @@ struct screen_info screen_info = {
};
extern int root_mountflags;
-extern int _etext, _edata, _end;
+extern int _text, _etext, _edata, _end;
unsigned char aux_device_present;
-
char elf_platform[ELF_PLATFORM_SIZE];
unsigned int elf_hwcap;
@@ -76,13 +65,16 @@ unsigned int elf_hwcap;
*/
unsigned int processor_id;
unsigned int __machine_arch_type;
+unsigned int vram_size;
+unsigned int system_rev;
+unsigned int system_serial_low;
+unsigned int system_serial_high;
#ifdef MULTI_CPU
struct processor processor;
#endif
#ifdef CONFIG_ARCH_ACORN
-int memc_ctrl_reg;
-int number_mfm_drives;
-unsigned int vram_size;
+unsigned int memc_ctrl_reg;
+unsigned int number_mfm_drives;
#endif
static struct proc_info_item proc_info;
@@ -95,39 +87,41 @@ static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '
* symbol to be empty if not configured.
*/
-/*
- * initial ram disk
- */
-#ifdef CONFIG_BLK_DEV_INITRD
-static void __init
-check_initrd(unsigned long mem_start, unsigned long mem_end)
+static void __init setup_processor(void)
{
- if (initrd_end > mem_end) {
- printk ("initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx) - disabling initrd\n",
- initrd_end, mem_end);
- initrd_start = 0;
- }
-}
+ extern struct proc_info_list __proc_info_begin, __proc_info_end;
+ struct proc_info_list *list;
-#else
-#define check_initrd(ms,me)
-#endif
+ /*
+ * 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
+ */
+ for (list = &__proc_info_begin; list < &__proc_info_end ; list++)
+ if ((processor_id & list->cpu_mask) == list->cpu_val)
+ break;
-void __init
-setup_processor(void)
-{
- armidindex = 0;
+ /*
+ * If processor type is unrecognised, then we
+ * can do nothing...
+ */
+ if (list >= &__proc_info_end) {
+ printk("CPU configuration botched (ID %08x), unable "
+ "to continue.\n", processor_id);
+ while (1);
+ }
- while ((armidlist[armidindex].id ^ processor_id) &
- armidlist[armidindex].mask)
- armidindex += 1;
+ proc_info = *list->info;
- if (armidlist[armidindex].id == 0)
- while (1);
+#ifdef MULTI_CPU
+ processor = *list->proc;
+#endif
- processor = *armidlist[armidindex].proc;
- processor._proc_init();
+ 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 char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
@@ -135,12 +129,13 @@ static char command_line[COMMAND_LINE_SIZE] = { 0, };
char saved_command_line[COMMAND_LINE_SIZE];
static void __init
-setup_mem(char *cmd_line, unsigned long *mem_start, unsigned long *mem_sz)
+setup_mem(char *cmd_line, unsigned long *mem_sz)
{
char c = ' ', *to = command_line;
int len = 0;
- *mem_start = (unsigned long)&_end;
+ if (!*mem_sz)
+ *mem_sz = MEM_SIZE;
for (;;) {
if (c == ' ') {
@@ -181,24 +176,27 @@ setup_mem(char *cmd_line, unsigned long *mem_start, unsigned long *mem_sz)
}
static void __init
-setup_ram(int doload, int prompt, int image_start)
+setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
{
#ifdef CONFIG_BLK_DEV_RAM
extern int rd_doload;
extern int rd_prompt;
extern int rd_image_start;
+ extern int rd_size;
rd_image_start = image_start;
rd_prompt = prompt;
rd_doload = doload;
+
+ if (rd_sz)
+ rd_size = rd_sz;
#endif
}
/*
* initial ram disk
*/
-static void __init
-setup_initrd(unsigned int start, unsigned int size)
+static void __init setup_initrd(unsigned int start, unsigned int size)
{
#ifdef CONFIG_BLK_DEV_INITRD
if (start) {
@@ -211,30 +209,62 @@ setup_initrd(unsigned int start, unsigned int size)
#endif
}
-#ifdef CONFIG_ARCH_ACORN
-int memc_ctrl_reg;
-int number_mfm_drives;
-unsigned int vram_size;
+static void __init check_initrd(unsigned long mem_end)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (initrd_end > mem_end) {
+ printk ("initrd extends beyond end of memory "
+ "(0x%08lx > 0x%08lx) - disabling initrd\n",
+ initrd_end, mem_end);
+ initrd_start = 0;
+ }
#endif
+}
-#ifndef PARAMS_BASE
-#define PARAMS_BASE NULL
-#endif
+/*
+ * Standard memory resources
+ */
+static struct resource system_ram = { "System RAM", 0, 0, IORESOURCE_MEM | IORESOURCE_BUSY };
+static struct resource video_ram = { "Video RAM", 0, 0, IORESOURCE_MEM };
+static struct resource kernel_code = { "Kernel code", 0, 0, IORESOURCE_MEM };
+static struct resource kernel_data = { "Kernel data", 0, 0, IORESOURCE_MEM };
+static struct resource lpt1 = { "reserved", 0x3bc, 0x3be, IORESOURCE_IO | IORESOURCE_BUSY };
+static struct resource lpt2 = { "reserved", 0x378, 0x37f, IORESOURCE_IO | IORESOURCE_BUSY };
+static struct resource lpt3 = { "reserved", 0x278, 0x27f, IORESOURCE_IO | IORESOURCE_BUSY };
+
+static void __init request_standard_resources(unsigned long end)
+{
+ kernel_code.start = __virt_to_bus((unsigned long) &_text);
+ kernel_code.end = __virt_to_bus((unsigned long) &_etext - 1);
+ kernel_data.start = __virt_to_bus((unsigned long) &_etext);
+ kernel_data.end = __virt_to_bus((unsigned long) &_edata - 1);
+ system_ram.start = __virt_to_bus(PAGE_OFFSET);
+ system_ram.end = __virt_to_bus(end - 1);
+
+ request_resource(&iomem_resource, &system_ram);
+ request_resource(&system_ram, &kernel_code);
+ request_resource(&system_ram, &kernel_data);
+ if (video_ram.start != video_ram.end)
+ request_resource(&iomem_resource, &video_ram);
-static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
-#define ENDIANNESS ((char)endian_test.l)
+ /*
+ * Some machines don't have the possibility of ever
+ * possessing LPT1 (lp0) and LPT3 (lp2)
+ */
+ if (machine_is_ebsa110() || machine_is_riscpc() ||
+ machine_is_netwinder())
+ request_resource(&ioport_resource, &lpt1);
+ if (machine_is_riscpc())
+ request_resource(&ioport_resource, &lpt2);
+ if (machine_is_ebsa110() || machine_is_netwinder())
+ request_resource(&ioport_resource, &lpt3);
+}
-void __init
-setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * memory_end_p)
+void __init setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * memory_end_p)
{
struct param_struct *params = (struct param_struct *)PARAMS_BASE;
- static unsigned char smptrap;
unsigned long memory_end = 0;
- char *from = NULL;
-
- if (smptrap == 1)
- return;
- smptrap = 1;
+ char *from = default_command_line;
#if defined(CONFIG_ARCH_ARC)
__machine_arch_type = MACH_TYPE_ARCHIMEDES;
@@ -244,10 +274,11 @@ setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * mem
setup_processor();
- init_mm.start_code = TASK_SIZE;
- init_mm.end_code = TASK_SIZE + (unsigned long) &_etext;
- init_mm.end_data = TASK_SIZE + (unsigned long) &_edata;
- init_mm.brk = TASK_SIZE + (unsigned long) &_end;
+ /*
+ * Defaults
+ */
+ ROOT_DEV = MKDEV(0, 255);
+ setup_ramdisk(1, 1, 0, 0);
/*
* Add your machine dependencies here
@@ -256,14 +287,35 @@ setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * mem
case MACH_TYPE_EBSA110:
/* EBSA110 locks if we execute 'wait for interrupt' */
disable_hlt();
- if (params && params->u1.s.page_size != 4096)
+ if (params && params->u1.s.page_size != PAGE_SIZE)
params = NULL;
break;
+#ifdef CONFIG_ARCH_ACORN
+#ifdef CONFIG_ARCH_RPC
case MACH_TYPE_RISCPC:
/* RiscPC can't handle half-word loads and stores */
elf_hwcap &= ~HWCAP_HALF;
+ {
+ extern void init_dram_banks(struct param_struct *);
+ init_dram_banks(params);
+ }
+
+ switch (params->u1.s.pages_in_vram) {
+ case 512:
+ vram_size += PAGE_SIZE * 256;
+ case 256:
+ vram_size += PAGE_SIZE * 256;
+ default:
+ break;
+ }
+#endif
+ case MACH_TYPE_ARCHIMEDES:
+ case MACH_TYPE_A5K:
+ memc_ctrl_reg = params->u1.s.memc_control_reg;
+ number_mfm_drives = (params->u1.s.adfsdrives >> 3) & 3;
break;
+#endif
case MACH_TYPE_EBSA285:
if (params) {
@@ -271,6 +323,8 @@ setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * mem
ORIG_Y = params->u1.s.video_y;
ORIG_VIDEO_COLS = params->u1.s.video_num_cols;
ORIG_VIDEO_LINES = params->u1.s.video_num_rows;
+ video_ram.start = 0x0a0000;
+ video_ram.end = 0x0bffff;
}
break;
@@ -288,53 +342,67 @@ setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * mem
break;
case MACH_TYPE_CATS:
- /* CATS must use soft-reboot */
+ /* CATS uses soft-reboot by default, since hard reboots
+ * fail on early boards.
+ */
reboot_setup("s", NULL);
+ params = NULL;
+ ORIG_VIDEO_LINES = 25;
+ ORIG_VIDEO_POINTS = 16;
+ ORIG_Y = 24;
+ video_ram.start = 0x0a0000;
+ video_ram.end = 0x0bffff;
break;
case MACH_TYPE_NETWINDER:
/*
* to be fixed in a future NeTTrom
*/
- if (params->u1.s.page_size == 4096) {
+ if (params->u1.s.page_size == PAGE_SIZE) {
if (params->u1.s.nr_pages != 0x2000 &&
params->u1.s.nr_pages != 0x4000) {
printk("Warning: bad NeTTrom parameters detected, using defaults\n");
- /*
- * This stuff doesn't appear to be initialised
- * properly by NeTTrom 2.0.6 and 2.0.7
- */
+ /*
+ * This stuff doesn't appear to be initialised
+ * properly by NeTTrom 2.0.6 and 2.0.7
+ */
params->u1.s.nr_pages = 0x2000; /* 32MB */
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;
- params->u1.s.video_x = 0;
- params->u1.s.video_y = 0;
- params->u1.s.video_num_cols = 80;
- params->u1.s.video_num_rows = 30;
}
} else {
printk("Warning: no NeTTrom parameter page detected, using "
"compiled-in settings\n");
params = NULL;
}
+ video_ram.start = 0x0a0000;
+ video_ram.end = 0x0bffff;
break;
default:
break;
}
- if (params) {
- memory_end = params->u1.s.page_size *
- params->u1.s.nr_pages;
+ if (params && params->u1.s.page_size != PAGE_SIZE) {
+ printk("Warning: wrong page size configuration, "
+ "trying to continue\n");
+ params = NULL;
+ }
- ROOT_DEV = to_kdev_t(params->u1.s.rootdev);
+ if (params) {
+ memory_end = PAGE_SIZE * params->u1.s.nr_pages;
+ ROOT_DEV = to_kdev_t(params->u1.s.rootdev);
+ system_rev = params->u1.s.system_rev;
+ system_serial_low = params->u1.s.system_serial_low;
+ system_serial_high = params->u1.s.system_serial_high;
- setup_ram((params->u1.s.flags & FLAG_RDLOAD) == 0,
- (params->u1.s.flags & FLAG_RDPROMPT) == 0,
- params->u1.s.rd_start);
+ setup_ramdisk((params->u1.s.flags & FLAG_RDLOAD) == 0,
+ (params->u1.s.flags & FLAG_RDPROMPT) == 0,
+ params->u1.s.rd_start,
+ params->u1.s.ramdisk_size);
setup_initrd(params->u1.s.initrd_start,
params->u1.s.initrd_size);
@@ -342,57 +410,27 @@ setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * mem
if (!(params->u1.s.flags & FLAG_READONLY))
root_mountflags &= ~MS_RDONLY;
-#ifdef CONFIG_ARCH_ACORN
-#ifdef CONFIG_ARCH_RPC
- {
- extern void init_dram_banks(struct param_struct *);
- init_dram_banks(params);
- }
-#endif
-
- memc_ctrl_reg = params->u1.s.memc_control_reg;
- number_mfm_drives = (params->u1.s.adfsdrives >> 3) & 3;
- vram_size = 0;
-
- switch (params->u1.s.pages_in_vram) {
- case 512:
- vram_size += PAGE_SIZE * 256;
- case 256:
- vram_size += PAGE_SIZE * 256;
- default:
- break;
- }
-
- memory_end -= vram_size;
-#endif
-
from = params->commandline;
- } else {
- ROOT_DEV = to_kdev_t(0x00ff);
-
- setup_ram(1, 1, 0);
- setup_initrd(0, 0);
}
- if (!memory_end)
- memory_end = MEM_SIZE;
-
- if (!from)
- from = default_command_line;
-
-#ifdef CONFIG_NWFPE
- fpe_init();
-#endif
-
/* Save unparsed command line copy for /proc/cmdline */
memcpy(saved_command_line, from, COMMAND_LINE_SIZE);
saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
- setup_mem(from, memory_start_p, &memory_end);
+ setup_mem(from, &memory_end);
memory_end += PAGE_OFFSET;
- check_initrd(*memory_start_p, memory_end);
+ *cmdline_p = command_line;
+ 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;
+ *memory_start_p = (unsigned long) &_end;
+ *memory_end_p = memory_end;
+
+ request_standard_resources(memory_end);
+ check_initrd(memory_end);
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
@@ -401,40 +439,49 @@ setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * mem
conswitchp = &dummy_con;
#endif
#endif
-
- *cmdline_p = command_line;
- *memory_end_p = memory_end;
}
static const char *machine_desc[] = {
- "EBSA110",
- "Acorn-RiscPC",
+ /* Machine name Allocater */
+ "EBSA110", /* RMK */
+ "Acorn-RiscPC", /* RMK */
"unknown",
- "Nexus-FTV/PCI",
- "EBSA285",
- "Rebel-NetWinder",
- "Chalice-CATS",
- "unknown-TBOX",
- "co-EBSA285",
- "CL-PS7110",
- "Acorn-Archimedes",
- "Acorn-A5000"
+ "Nexus-FTV/PCI", /* Philip Blundell */
+ "EBSA285", /* RMK */
+ "Rebel-NetWinder", /* RMK */
+ "Chalice-CATS", /* Philip Blundell */
+ "unknown-TBOX", /* Philip Blundell */
+ "co-EBSA285", /* Mark van Doesburg */
+ "CL-PS7110", /* Werner Almesberger */
+ "Acorn-Archimedes", /* RMK/DAG */
+ "Acorn-A5000", /* RMK/PB */
+ "Etoile", /* Alex de Vries */
+ "LaCie_NAS", /* Benjamin Herrenschmidt */
+ "CL-PS7500", /* Philip Blundell */
+ "Shark" /* Alexander Schulz */
};
int get_cpuinfo(char * buffer)
{
- int len;
-
- len = sprintf(buffer,
- "Processor\t: %s %s rev %d (%s)\n"
- "BogoMips\t: %lu.%02lu\n"
- "Hardware\t: %s\n",
- proc_info.manufacturer,
- proc_info.cpu_name,
- (int)processor_id & 15,
- elf_platform,
- (loops_per_sec+2500) / 500000,
- ((loops_per_sec+2500) / 5000) % 100,
- machine_desc[machine_arch_type]);
- return len;
+ char *p = buffer;
+
+ p += sprintf(p, "Processor\t: %s %s rev %d (%s)\n",
+ proc_info.manufacturer, proc_info.cpu_name,
+ (int)processor_id & 15, elf_platform);
+
+ p += sprintf(p, "BogoMIPS\t: %lu.%02lu\n",
+ (loops_per_sec+2500) / 500000,
+ ((loops_per_sec+2500) / 5000) % 100);
+
+ p += sprintf(p, "Hardware\t: %s\n",
+ machine_desc[machine_arch_type]);
+
+ p += sprintf(p, "Revision\t: %04x\n",
+ system_rev);
+
+ p += sprintf(p, "Serial\t\t: %08x%08x\n",
+ system_serial_high,
+ system_serial_low);
+
+ return p - buffer;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 08:29:14 +0000