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1624 |
jcastillo |
/* $Id: setup.c,v 1.1 2005-12-20 09:50:43 jcastillo Exp $
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* linux/arch/sparc/kernel/setup.c
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*
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* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
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*/
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/malloc.h>
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#include <linux/ldt.h>
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#include <linux/smp.h>
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#include <linux/user.h>
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#include <linux/a.out.h>
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#include <linux/tty.h>
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#include <linux/delay.h>
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#include <linux/config.h>
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#include <linux/fs.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <asm/segment.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/kgdb.h>
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#include <asm/processor.h>
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#include <asm/oplib.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/traps.h>
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#include <asm/vaddrs.h>
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#include <asm/kdebug.h>
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#include <asm/mbus.h>
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struct screen_info screen_info = {
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0, 0, /* orig-x, orig-y */
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{ 0, 0, }, /* unused */
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0, /* orig-video-page */
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0, /* orig-video-mode */
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128, /* orig-video-cols */
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0,0,0, /* ega_ax, ega_bx, ega_cx */
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54, /* orig-video-lines */
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0, /* orig-video-isVGA */
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16 /* orig-video-points */
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};
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unsigned int phys_bytes_of_ram, end_of_phys_memory;
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unsigned long bios32_init(unsigned long memory_start, unsigned long memory_end)
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{
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return memory_start;
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}
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/* Typing sync at the prom prompt calls the function pointed to by
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* romvec->pv_synchook which I set to the following function.
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* This should sync all filesystems and return, for now it just
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* prints out pretty messages and returns.
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*/
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extern unsigned long trapbase;
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extern void breakpoint(void);
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#if CONFIG_SUN_CONSOLE
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extern void console_restore_palette(void);
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#endif
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asmlinkage void sys_sync(void); /* it's really int */
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/* Pretty sick eh? */
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void prom_sync_me(void)
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{
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unsigned long prom_tbr, flags;
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save_flags(flags); cli();
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__asm__ __volatile__("rd %%tbr, %0\n\t" : "=r" (prom_tbr));
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__asm__ __volatile__("wr %0, 0x0, %%tbr\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t" : : "r" (&trapbase));
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#if CONFIG_SUN_CONSOLE
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console_restore_palette ();
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#endif
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prom_printf("PROM SYNC COMMAND...\n");
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show_free_areas();
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if(current->pid != 0) {
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sti();
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sys_sync();
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cli();
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}
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prom_printf("Returning to prom\n");
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__asm__ __volatile__("wr %0, 0x0, %%tbr\n\t"
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"nop\n\t"
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"nop\n\t"
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"nop\n\t" : : "r" (prom_tbr));
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restore_flags(flags);
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return;
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}
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extern void rs_kgdb_hook(int tty_num); /* sparc/serial.c */
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unsigned int boot_flags;
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#define BOOTME_DEBUG 0x1
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#define BOOTME_SINGLE 0x2
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#define BOOTME_KGDB 0x4
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void kernel_enter_debugger(void)
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{
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if (boot_flags & BOOTME_KGDB) {
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printk("KGDB: Entered\n");
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breakpoint();
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}
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}
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int obp_system_intr(void)
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{
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if (boot_flags & BOOTME_KGDB) {
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printk("KGDB: system interrupted\n");
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breakpoint();
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return 1;
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}
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if (boot_flags & BOOTME_DEBUG) {
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printk("OBP: system interrupted\n");
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prom_halt();
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return 1;
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}
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return 0;
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}
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/* This routine does no error checking, make sure your string is sane
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* before calling this!
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* XXX This is cheese, make generic and better.
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*/
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void
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boot_flags_init(char *commands)
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{
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int i;
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for(i=0; i<strlen(commands); i++) {
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if(commands[i]=='-') {
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switch(commands[i+1]) {
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case 'd':
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boot_flags |= BOOTME_DEBUG;
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break;
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case 's':
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boot_flags |= BOOTME_SINGLE;
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break;
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case 'h':
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prom_printf("boot_flags_init: Found halt flag, doing so now...\n");
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halt();
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break;
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default:
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printk("boot_flags_init: Unknown boot arg (-%c)\n",
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commands[i+1]);
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break;
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};
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} else {
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if(commands[i]=='k' && commands[i+1]=='g' &&
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commands[i+2]=='d' && commands[i+3]=='b' &&
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commands[i+4]=='=' && commands[i+5]=='t' &&
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commands[i+6]=='t' && commands[i+7]=='y') {
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printk("KGDB: Using serial line /dev/tty%c for "
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"session\n", commands[i+8]);
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boot_flags |= BOOTME_KGDB;
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#if CONFIG_SUN_SERIAL
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if(commands[i+8]=='a')
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rs_kgdb_hook(0);
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else if(commands[i+8]=='b')
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rs_kgdb_hook(1);
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else
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#endif
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#if CONFIG_AP1000
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if(commands[i+8]=='c')
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printk("KGDB: ap1000+ debugging\n");
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else
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#endif
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{
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printk("KGDB: whoops bogon tty line "
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"requested, disabling session\n");
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boot_flags &= (~BOOTME_KGDB);
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}
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}
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}
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}
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return;
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}
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/* This routine will in the future do all the nasty prom stuff
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* to probe for the mmu type and its parameters, etc. This will
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* also be where SMP things happen plus the Sparc specific memory
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* physical memory probe as on the alpha.
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*/
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extern void load_mmu(void);
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extern int prom_probe_memory(void);
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extern void sun4c_probe_vac(void);
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extern void get_idprom(void);
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extern char cputypval;
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extern unsigned long start, end;
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extern void panic_setup(char *, int *);
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| 205 |
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char saved_command_line[256];
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enum sparc_cpu sparc_cpu_model;
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| 208 |
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struct tt_entry *sparc_ttable;
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| 210 |
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static struct pt_regs fake_swapper_regs = { 0, 0, 0, 0, { 0, } };
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| 212 |
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void setup_arch(char **cmdline_p,
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unsigned long * memory_start_p, unsigned long * memory_end_p)
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{
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| 215 |
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int total, i, packed;
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| 216 |
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| 217 |
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#if CONFIG_AP1000
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register_console(prom_printf);
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| 219 |
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((char *)(&cputypval))[4] = 'm'; /* ugly :-( */
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#endif
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| 222 |
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sparc_ttable = (struct tt_entry *) &start;
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| 224 |
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/* Initialize PROM console and command line. */
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*cmdline_p = prom_getbootargs();
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strcpy(saved_command_line, *cmdline_p);
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| 228 |
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/* Set sparc_cpu_model */
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sparc_cpu_model = sun_unknown;
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if(!strcmp(&cputypval,"sun4c")) { sparc_cpu_model=sun4c; }
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if(!strcmp(&cputypval,"sun4m")) { sparc_cpu_model=sun4m; }
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if(!strcmp(&cputypval,"sun4d")) { sparc_cpu_model=sun4d; }
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if(!strcmp(&cputypval,"sun4e")) { sparc_cpu_model=sun4e; }
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if(!strcmp(&cputypval,"sun4u")) { sparc_cpu_model=sun4u; }
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printk("ARCH: ");
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packed = 0;
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switch(sparc_cpu_model)
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{
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case sun4c:
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printk("SUN4C\n");
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| 241 |
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sun4c_probe_vac();
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| 242 |
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packed = 0;
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| 243 |
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break;
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| 244 |
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case sun4m:
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| 245 |
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printk("SUN4M\n");
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| 246 |
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packed = 1;
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| 247 |
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break;
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| 248 |
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case sun4d:
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| 249 |
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printk("SUN4D\n");
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| 250 |
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packed = 1;
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| 251 |
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break;
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| 252 |
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case sun4e:
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| 253 |
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printk("SUN4E\n");
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| 254 |
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packed = 0;
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| 255 |
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break;
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| 256 |
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case sun4u:
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| 257 |
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printk("SUN4U\n");
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| 258 |
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break;
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| 259 |
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default:
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| 260 |
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printk("UNKNOWN!\n");
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| 261 |
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break;
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| 262 |
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};
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| 263 |
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|
| 264 |
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boot_flags_init(*cmdline_p);
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| 265 |
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if((boot_flags&BOOTME_DEBUG) && (linux_dbvec!=0) &&
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| 266 |
|
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((*(short *)linux_dbvec) != -1)) {
|
| 267 |
|
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printk("Booted under KADB. Syncing trap table.\n");
|
| 268 |
|
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(*(linux_dbvec->teach_debugger))();
|
| 269 |
|
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}
|
| 270 |
|
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if((boot_flags & BOOTME_KGDB)) {
|
| 271 |
|
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set_debug_traps();
|
| 272 |
|
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breakpoint();
|
| 273 |
|
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}
|
| 274 |
|
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|
| 275 |
|
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get_idprom();
|
| 276 |
|
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load_mmu();
|
| 277 |
|
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total = prom_probe_memory();
|
| 278 |
|
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*memory_start_p = (((unsigned long) &end));
|
| 279 |
|
|
|
| 280 |
|
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if(!packed) {
|
| 281 |
|
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for(i=0; sp_banks[i].num_bytes != 0; i++)
|
| 282 |
|
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end_of_phys_memory = sp_banks[i].base_addr +
|
| 283 |
|
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sp_banks[i].num_bytes;
|
| 284 |
|
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} else {
|
| 285 |
|
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unsigned int sum = 0;
|
| 286 |
|
|
|
| 287 |
|
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for(i = 0; sp_banks[i].num_bytes != 0; i++)
|
| 288 |
|
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sum += sp_banks[i].num_bytes;
|
| 289 |
|
|
|
| 290 |
|
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end_of_phys_memory = sum;
|
| 291 |
|
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}
|
| 292 |
|
|
|
| 293 |
|
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prom_setsync(prom_sync_me);
|
| 294 |
|
|
|
| 295 |
|
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*memory_end_p = (end_of_phys_memory + PAGE_OFFSET);
|
| 296 |
|
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if(*memory_end_p > IOBASE_VADDR)
|
| 297 |
|
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*memory_end_p = IOBASE_VADDR;
|
| 298 |
|
|
|
| 299 |
|
|
/* Due to stack alignment restrictions and assumptions... */
|
| 300 |
|
|
init_task.mm->mmap->vm_page_prot = PAGE_SHARED;
|
| 301 |
|
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init_task.mm->mmap->vm_start = KERNBASE;
|
| 302 |
|
|
init_task.mm->mmap->vm_end = *memory_end_p;
|
| 303 |
|
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init_task.tss.kregs = &fake_swapper_regs;
|
| 304 |
|
|
|
| 305 |
|
|
{
|
| 306 |
|
|
extern int serial_console; /* in console.c, of course */
|
| 307 |
|
|
#if !CONFIG_SUN_SERIAL
|
| 308 |
|
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serial_console = 0;
|
| 309 |
|
|
#else
|
| 310 |
|
|
int idev = prom_query_input_device();
|
| 311 |
|
|
int odev = prom_query_output_device();
|
| 312 |
|
|
if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) {
|
| 313 |
|
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serial_console = 0;
|
| 314 |
|
|
} else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) {
|
| 315 |
|
|
serial_console = 1;
|
| 316 |
|
|
} else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) {
|
| 317 |
|
|
prom_printf("Console on ttyb is not supported\n");
|
| 318 |
|
|
prom_halt();
|
| 319 |
|
|
} else {
|
| 320 |
|
|
prom_printf("Inconsistent console\n");
|
| 321 |
|
|
prom_halt();
|
| 322 |
|
|
}
|
| 323 |
|
|
#endif
|
| 324 |
|
|
}
|
| 325 |
|
|
#if 1
|
| 326 |
|
|
/* XXX ROOT_DEV hack for kgdb - davem XXX */
|
| 327 |
|
|
#if 1
|
| 328 |
|
|
ROOT_DEV = MKDEV(UNNAMED_MAJOR, 255); /* NFS */
|
| 329 |
|
|
#else
|
| 330 |
|
|
ROOT_DEV = 0x801; /* SCSI DISK */
|
| 331 |
|
|
#endif
|
| 332 |
|
|
|
| 333 |
|
|
#endif
|
| 334 |
|
|
}
|
| 335 |
|
|
|
| 336 |
|
|
asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int on)
|
| 337 |
|
|
{
|
| 338 |
|
|
return -EIO;
|
| 339 |
|
|
}
|
| 340 |
|
|
|
| 341 |
|
|
/* BUFFER is PAGE_SIZE bytes long. */
|
| 342 |
|
|
|
| 343 |
|
|
extern char *sparc_cpu_type[];
|
| 344 |
|
|
extern char *sparc_fpu_type[];
|
| 345 |
|
|
|
| 346 |
|
|
extern char *smp_info(void);
|
| 347 |
|
|
|
| 348 |
|
|
int get_cpuinfo(char *buffer)
|
| 349 |
|
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{
|
| 350 |
|
|
int cpuid=get_cpuid();
|
| 351 |
|
|
|
| 352 |
|
|
return sprintf(buffer, "cpu\t\t: %s\n"
|
| 353 |
|
|
"fpu\t\t: %s\n"
|
| 354 |
|
|
"promlib\t\t: Version %d Revision %d\n"
|
| 355 |
|
|
"type\t\t: %s\n"
|
| 356 |
|
|
"Elf Support\t: %s\n" /* I can't remember when I do --ralp */
|
| 357 |
|
|
#ifndef __SMP__
|
| 358 |
|
|
"BogoMips\t: %lu.%02lu\n"
|
| 359 |
|
|
#else
|
| 360 |
|
|
"Cpu0Bogo\t: %lu.%02lu\n"
|
| 361 |
|
|
"Cpu1Bogo\t: %lu.%02lu\n"
|
| 362 |
|
|
"Cpu2Bogo\t: %lu.%02lu\n"
|
| 363 |
|
|
"Cpu3Bogo\t: %lu.%02lu\n"
|
| 364 |
|
|
#endif
|
| 365 |
|
|
"%s"
|
| 366 |
|
|
#ifdef __SMP__
|
| 367 |
|
|
"%s"
|
| 368 |
|
|
#endif
|
| 369 |
|
|
,
|
| 370 |
|
|
sparc_cpu_type[cpuid],
|
| 371 |
|
|
sparc_fpu_type[cpuid],
|
| 372 |
|
|
#if CONFIG_AP1000
|
| 373 |
|
|
0, 0,
|
| 374 |
|
|
#else
|
| 375 |
|
|
romvec->pv_romvers, prom_rev,
|
| 376 |
|
|
#endif
|
| 377 |
|
|
&cputypval,
|
| 378 |
|
|
#if CONFIG_BINFMT_ELF
|
| 379 |
|
|
"yes",
|
| 380 |
|
|
#else
|
| 381 |
|
|
"no",
|
| 382 |
|
|
#endif
|
| 383 |
|
|
#ifndef __SMP__
|
| 384 |
|
|
loops_per_sec/500000, (loops_per_sec/5000) % 100,
|
| 385 |
|
|
#else
|
| 386 |
|
|
cpu_data[0].udelay_val/500000, (cpu_data[0].udelay_val/5000)%100,
|
| 387 |
|
|
cpu_data[1].udelay_val/500000, (cpu_data[1].udelay_val/5000)%100,
|
| 388 |
|
|
cpu_data[2].udelay_val/500000, (cpu_data[2].udelay_val/5000)%100,
|
| 389 |
|
|
cpu_data[3].udelay_val/500000, (cpu_data[3].udelay_val/5000)%100,
|
| 390 |
|
|
#endif
|
| 391 |
|
|
mmu_info()
|
| 392 |
|
|
#ifdef __SMP__
|
| 393 |
|
|
, smp_info()
|
| 394 |
|
|
#endif
|
| 395 |
|
|
);
|
| 396 |
|
|
|
| 397 |
|
|
}
|
