diff options
Diffstat (limited to 'arch/ppc/kernel/mbx_setup.c')
| -rw-r--r-- | arch/ppc/kernel/mbx_setup.c | 486 |
1 files changed, 0 insertions, 486 deletions
diff --git a/arch/ppc/kernel/mbx_setup.c b/arch/ppc/kernel/mbx_setup.c deleted file mode 100644 index f6487783b..000000000 --- a/arch/ppc/kernel/mbx_setup.c +++ /dev/null @@ -1,486 +0,0 @@ -/* - * $Id: mbx_setup.c,v 1.12 1999/08/31 06:53:56 davem Exp $ - * - * linux/arch/ppc/kernel/setup.c - * - * Copyright (C) 1995 Linus Torvalds - * Adapted from 'alpha' version by Gary Thomas - * Modified by Cort Dougan (cort@cs.nmt.edu) - * Modified for MBX using prep/chrp/pmac functions by Dan (dmalek@jlc.net) - */ - -/* - * bootup setup stuff.. - */ - -#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/major.h> -#include <linux/interrupt.h> -#include <linux/reboot.h> -#include <linux/init.h> -#include <linux/blk.h> -#include <linux/ide.h> -#include <linux/ioport.h> - -#include <asm/mmu.h> -#include <asm/processor.h> -#include <asm/residual.h> -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/mbx.h> -#include <asm/machdep.h> - -#include "time.h" -#include "local_irq.h" - -static int mbx_set_rtc_time(unsigned long time); -unsigned long mbx_get_rtc_time(void); -void mbx_calibrate_decr(void); - -extern int mackbd_setkeycode(unsigned int scancode, unsigned int keycode); -extern int mackbd_getkeycode(unsigned int scancode); -extern int mackbd_translate(unsigned char scancode, unsigned char *keycode, - char raw_mode); -extern char mackbd_unexpected_up(unsigned char keycode); -extern void mackbd_leds(unsigned char leds); -extern void mackbd_init_hw(void); - -extern unsigned long loops_per_sec; - -unsigned long empty_zero_page[1024]; - -#ifdef CONFIG_BLK_DEV_RAM -extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */ -extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */ -extern int rd_image_start; /* starting block # of image */ -#endif - -extern char saved_command_line[256]; - -extern unsigned long find_available_memory(void); -extern void m8xx_cpm_reset(uint); - -void __init adbdev_init(void) -{ -} - -void __init -mbx_setup_arch(void) -{ - int cpm_page; - extern char cmd_line[]; - - cpm_page = (int) alloc_bootmem_pages(PAGE_SIZE); - - sprintf(cmd_line, -"%s root=/dev/nfs nfsroot=/sys/mbxroot", - cmd_line); - printk("Boot arguments: %s\n", cmd_line); - - /* Reset the Communication Processor Module. - */ - m8xx_cpm_reset(cpm_page); - -#ifdef notdef - ROOT_DEV = to_kdev_t(0x0301); /* hda1 */ -#endif - -#ifdef CONFIG_BLK_DEV_INITRD -#if 0 - ROOT_DEV = to_kdev_t(0x0200); /* floppy */ - rd_prompt = 1; - rd_doload = 1; - rd_image_start = 0; -#endif -#if 0 /* XXX this may need to be updated for the new bootmem stuff, - or possibly just deleted (see set_phys_avail() in init.c). - - paulus. */ - /* initrd_start and size are setup by boot/head.S and kernel/head.S */ - if ( initrd_start ) - { - if (initrd_end > *memory_end_p) - { - printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\ndisabling initrd\n", - initrd_end,*memory_end_p); - initrd_start = 0; - } - } -#endif -#endif - -#ifdef notdef - request_region(0x20,0x20,"pic1"); - request_region(0xa0,0x20,"pic2"); - request_region(0x00,0x20,"dma1"); - request_region(0x40,0x20,"timer"); - request_region(0x80,0x10,"dma page reg"); - request_region(0xc0,0x20,"dma2"); -#endif -} - -void -abort(void) -{ -#ifdef CONFIG_XMON - extern void xmon(void *); - xmon(0); -#endif - machine_restart(NULL); -} - -/* The decrementer counts at the system (internal) clock frequency divided by - * sixteen, or external oscillator divided by four. Currently, we only - * support the MBX, which is system clock divided by sixteen. - */ -void __init mbx_calibrate_decr(void) -{ - bd_t *binfo = (bd_t *)&res; - int freq, fp, divisor; - - if ((((immap_t *)MBX_IMAP_ADDR)->im_clkrst.car_sccr & 0x02000000) == 0) - printk("WARNING: Wrong decrementer source clock.\n"); - - /* The manual says the frequency is in Hz, but it is really - * as MHz. The value 'fp' is the number of decrementer ticks - * per second. - */ - fp = (binfo->bi_intfreq * 1000000) / 16; - freq = fp*60; /* try to make freq/1e6 an integer */ - divisor = 60; - printk("time_init: decrementer frequency = %d/%d\n", freq, divisor); - decrementer_count = freq / HZ / divisor; - count_period_num = divisor; - count_period_den = freq / 1000000; -} - -/* A place holder for time base interrupts, if they are ever enabled. -*/ -void timebase_interrupt(int irq, void * dev, struct pt_regs * regs) -{ - printk("timebase_interrupt()\n"); -} - -/* The RTC on the MPC8xx is an internal register. - * We want to protect this during power down, so we need to unlock, - * modify, and re-lock. - */ -static int -mbx_set_rtc_time(unsigned long time) -{ - ((immap_t *)MBX_IMAP_ADDR)->im_sitk.sitk_rtck = KAPWR_KEY; - ((immap_t *)MBX_IMAP_ADDR)->im_sit.sit_rtc = time; - ((immap_t *)MBX_IMAP_ADDR)->im_sitk.sitk_rtck = ~KAPWR_KEY; - return(0); -} - -unsigned long __init mbx_get_rtc_time(void) -{ - /* First, unlock all of the registers we are going to modify. - * To protect them from corruption during power down, registers - * that are maintained by keep alive power are "locked". To - * modify these registers we have to write the key value to - * the key location associated with the register. - */ - ((immap_t *)MBX_IMAP_ADDR)->im_sitk.sitk_tbscrk = KAPWR_KEY; - ((immap_t *)MBX_IMAP_ADDR)->im_sitk.sitk_rtcsck = KAPWR_KEY; - - - /* Disable the RTC one second and alarm interrupts. - */ - ((immap_t *)MBX_IMAP_ADDR)->im_sit.sit_rtcsc &= - ~(RTCSC_SIE | RTCSC_ALE); - - /* Enabling the decrementer also enables the timebase interrupts - * (or from the other point of view, to get decrementer interrupts - * we have to enable the timebase). The decrementer interrupt - * is wired into the vector table, nothing to do here for that. - */ - ((immap_t *)MBX_IMAP_ADDR)->im_sit.sit_tbscr = - ((mk_int_int_mask(DEC_INTERRUPT) << 8) | - (TBSCR_TBF | TBSCR_TBE)); - if (request_irq(DEC_INTERRUPT, timebase_interrupt, 0, "tbint", NULL) != 0) - panic("Could not allocate timer IRQ!"); - - /* Get time from the RTC. - */ - return ((immap_t *)MBX_IMAP_ADDR)->im_sit.sit_rtc; -} - -void -mbx_restart(char *cmd) -{ - extern void MBX_gorom(void); - - MBX_gorom(); -} - -void -mbx_power_off(void) -{ - mbx_restart(NULL); -} - -void -mbx_halt(void) -{ - mbx_restart(NULL) -} - - -int mbx_setup_residual(char *buffer) -{ - int len = 0; - bd_t *bp; - extern RESIDUAL *res; - - bp = (bd_t *)res; - - len += sprintf(len+buffer,"clock\t\t: %dMHz\n" - "bus clock\t: %dMHz\n", - bp->bi_intfreq /*/ 1000000*/, - bp->bi_busfreq /*/ 1000000*/); - - return len; -} - -void -mbx_do_IRQ(struct pt_regs *regs, - int cpu, - int isfake) -{ - int irq; - unsigned long bits = 0; - - /* For MPC8xx, read the SIVEC register and shift the bits down - * to get the irq number. */ - bits = ((immap_t *)IMAP_ADDR)->im_siu_conf.sc_sivec; - irq = bits >> 26; - irq += ppc8xx_pic.irq_offset; - bits = 1UL << irq; - - if (irq < 0) { - printk(KERN_DEBUG "Bogus interrupt %d from PC = %lx\n", - irq, regs->nip); - spurious_interrupts++; - } - else { - ppc_irq_dispatch_handler( regs, irq ); - } - -} - -static void mbx_i8259_action(int cpl, void *dev_id, struct pt_regs *regs) -{ - int bits, irq; - - /* A bug in the QSpan chip causes it to give us 0xff always - * when doing a character read. So read 32 bits and shift. - * This doesn't seem to return useful values anyway, but - * read it to make sure things are acked. - * -- Cort - */ - irq = (inl(0x508) >> 24)&0xff; - if ( irq != 0xff ) printk("iack %d\n", irq); - - outb(0x0C, 0x20); - irq = inb(0x20) & 7; - if (irq == 2) - { - outb(0x0C, 0xA0); - irq = inb(0xA0); - irq = (irq&7) + 8; - } - bits = 1UL << irq; - irq += i8259_pic.irq_offset; - ppc_irq_dispatch_handler( regs, irq ); -} - - -/* On MBX8xx, the interrupt control (SIEL) was set by EPPC-bug. External - * interrupts can be either edge or level triggered, but there is no - * reason for us to change the EPPC-bug values (it would not work if we did). - */ -void __init -mbx_init_IRQ(void) -{ - int i; - - ppc8xx_pic.irq_offset = 16; - for ( i = 16 ; i < 32 ; i++ ) - irq_desc[i].ctl = &ppc8xx_pic; - unmask_irq(CPM_INTERRUPT); - - for ( i = 0 ; i < 16 ; i++ ) - irq_desc[i].ctl = &i8259_pic; - i8259_init(); - request_irq(ISA_BRIDGE_INT, mbx_i8259_action, 0, "8259 cascade", NULL); - enable_irq(ISA_BRIDGE_INT); -} - -#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) -/* - * IDE stuff. - */ -void -mbx_ide_insw(ide_ioreg_t port, void *buf, int ns) -{ - ide_insw(port+_IO_BASE), buf, ns); -} - -void -mbx_ide_outsw(ide_ioreg_t port, void *buf, int ns) -{ - ide_outsw(port+_IO_BASE, buf, ns); -} - -int -mbx_ide_default_irq(ide_ioreg_t base) -{ - return 14; -} - -ide_ioreg_t -mbx_ide_default_io_base(int index) -{ - return index; -} - -int -mbx_ide_check_region(ide_ioreg_t from, unsigned int extent) -{ - return 0 -} - -void -mbx_ide_request_region(ide_ioreg_t from, - unsigned int extent, - const char *name) -{ -} - -void -mbx_ide_release_region(ide_ioreg_t from, - unsigned int extent) -{ -} - -void -mbx_ide_fix_driveid(struct hd_driveid *id) -{ - ppc_generic_ide_fix_driveid(id); -} - -void -mbx_ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq) -{ - ide_ioreg_t reg = data_port; - int i; - - *irq = 0; - - if (data_port != 0) /* Only map the first ATA flash drive */ - return; - -#ifdef ATA_FLASH - - reg = (ide_ioreg_t) ioremap(PCMCIA_MEM_ADDR, 0x200); - - for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { - hw->io_ports[i] = reg; - reg += 1; - } - - /* Does not matter */ - - if (ctrl_port) { - hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port; - } else { - hw->io_ports[IDE_CONTROL_OFFSET] = reg; - } - if (irq) - hw->irq = 13; -#endif -} -#endif - -void __init -mbx_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - - if ( r3 ) - memcpy( (void *)&res,(void *)(r3+KERNELBASE), sizeof(bd_t) ); - -#ifdef CONFIG_PCI - mbx_setup_pci_ptrs(); -#endif - -#ifdef CONFIG_BLK_DEV_INITRD - /* take care of initrd if we have one */ - if ( r4 ) - { - initrd_start = r4 + KERNELBASE; - initrd_end = r5 + KERNELBASE; - } -#endif /* CONFIG_BLK_DEV_INITRD */ - /* take care of cmd line */ - if ( r6 ) - { - - *(char *)(r7+KERNELBASE) = 0; - strcpy(cmd_line, (char *)(r6+KERNELBASE)); - } - - ppc_md.setup_arch = mbx_setup_arch; - ppc_md.setup_residual = mbx_setup_residual; - ppc_md.get_cpuinfo = NULL; - ppc_md.irq_cannonicalize = NULL; - ppc_md.init_IRQ = mbx_init_IRQ; - ppc_md.do_IRQ = mbx_do_IRQ; - ppc_md.init = NULL; - - ppc_md.restart = mbx_restart; - ppc_md.power_off = mbx_power_off; - ppc_md.halt = mbx_halt; - - ppc_md.time_init = NULL; - ppc_md.set_rtc_time = mbx_set_rtc_time; - ppc_md.get_rtc_time = mbx_get_rtc_time; - ppc_md.calibrate_decr = mbx_calibrate_decr; - - ppc_md.kbd_setkeycode = pckbd_setkeycode; - ppc_md.kbd_getkeycode = pckbd_getkeycode; - ppc_md.kbd_translate = pckbd_translate; - ppc_md.kbd_unexpected_up = pckbd_unexpected_up; - ppc_md.kbd_leds = pckbd_leds; - ppc_md.kbd_init_hw = pckbd_init_hw; -#ifdef CONFIG_MAGIC_SYSRQ - ppc_md.kbd_sysrq_xlate = pckbd_sysrq_xlate; -#endif - -#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) - ppc_ide_md.insw = mbx_ide_insw; - ppc_ide_md.outsw = mbx_ide_outsw; - ppc_ide_md.default_irq = mbx_ide_default_irq; - ppc_ide_md.default_io_base = mbx_ide_default_io_base; - ppc_ide_md.ide_check_region = mbx_ide_check_region; - ppc_ide_md.ide_request_region = mbx_ide_request_region; - ppc_ide_md.ide_release_region = mbx_ide_release_region; - ppc_ide_md.fix_driveid = mbx_ide_fix_driveid; - ppc_ide_md.ide_init_hwif = mbx_ide_init_hwif_ports; - - ppc_ide_md.io_base = _IO_BASE; -#endif -} |