2008-05-20 01:52:27 +02:00
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/*
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2005-04-17 00:20:36 +02:00
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* linux/arch/sparc64/kernel/setup.c
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*
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* Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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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 <asm/smp.h>
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#include <linux/user.h>
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2006-07-10 13:44:13 +02:00
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#include <linux/screen_info.h>
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2005-04-17 00:20:36 +02:00
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/seq_file.h>
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#include <linux/syscalls.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/inet.h>
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#include <linux/console.h>
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#include <linux/root_dev.h>
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#include <linux/interrupt.h>
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#include <linux/cpu.h>
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#include <linux/initrd.h>
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#include <asm/system.h>
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#include <asm/io.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/idprom.h>
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#include <asm/head.h>
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#include <asm/starfire.h>
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#include <asm/mmu_context.h>
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#include <asm/timer.h>
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#include <asm/sections.h>
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#include <asm/setup.h>
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#include <asm/mmu.h>
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2007-05-26 00:49:59 +02:00
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#include <asm/ns87303.h>
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2009-11-28 02:33:43 +01:00
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#include <asm/btext.h>
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2005-04-17 00:20:36 +02:00
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#ifdef CONFIG_IP_PNP
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#include <net/ipconfig.h>
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#endif
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2008-03-26 05:51:40 +01:00
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#include "entry.h"
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2008-12-07 09:02:08 +01:00
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#include "kernel.h"
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2008-03-26 05:51:40 +01:00
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2007-05-26 00:49:59 +02:00
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/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
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* operations in asm/ns87303.h
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*/
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DEFINE_SPINLOCK(ns87303_lock);
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2009-01-09 01:58:20 +01:00
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EXPORT_SYMBOL(ns87303_lock);
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2007-05-26 00:49:59 +02:00
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2005-04-17 00:20:36 +02:00
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struct screen_info screen_info = {
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0, 0, /* orig-x, orig-y */
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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, /* unused, ega_bx, unused */
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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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static void
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prom_console_write(struct console *con, const char *s, unsigned n)
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{
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prom_write(s, n);
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}
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/* Exported for mm/init.c:paging_init. */
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unsigned long cmdline_memory_size = 0;
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2008-02-18 08:22:50 +01:00
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static struct console prom_early_console = {
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.name = "earlyprom",
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2005-04-17 00:20:36 +02:00
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.write = prom_console_write,
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2008-04-24 07:22:29 +02:00
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.flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
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2005-04-17 00:20:36 +02:00
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.index = -1,
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};
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/*
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* Process kernel command line switches that are specific to the
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* SPARC or that require special low-level processing.
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*/
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static void __init process_switch(char c)
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{
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switch (c) {
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case 'd':
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case 's':
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break;
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case 'h':
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prom_printf("boot_flags_init: Halt!\n");
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prom_halt();
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break;
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case 'p':
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2008-02-18 08:22:50 +01:00
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/* Just ignore, this behavior is now the default. */
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2005-04-17 00:20:36 +02:00
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break;
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2005-05-24 00:52:08 +02:00
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case 'P':
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/* Force UltraSPARC-III P-Cache on. */
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if (tlb_type != cheetah) {
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printk("BOOT: Ignoring P-Cache force option.\n");
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break;
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}
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cheetah_pcache_forced_on = 1;
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add_taint(TAINT_MACHINE_CHECK);
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cheetah_enable_pcache();
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break;
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2005-04-17 00:20:36 +02:00
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default:
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printk("Unknown boot switch (-%c)\n", c);
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break;
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}
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}
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static void __init boot_flags_init(char *commands)
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{
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while (*commands) {
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/* Move to the start of the next "argument". */
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while (*commands && *commands == ' ')
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commands++;
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/* Process any command switches, otherwise skip it. */
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if (*commands == '\0')
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break;
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if (*commands == '-') {
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commands++;
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while (*commands && *commands != ' ')
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process_switch(*commands++);
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continue;
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}
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2007-07-21 01:59:26 +02:00
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if (!strncmp(commands, "mem=", 4)) {
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2005-04-17 00:20:36 +02:00
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/*
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* "mem=XXX[kKmM]" overrides the PROM-reported
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* memory size.
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*/
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cmdline_memory_size = simple_strtoul(commands + 4,
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&commands, 0);
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if (*commands == 'K' || *commands == 'k') {
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cmdline_memory_size <<= 10;
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commands++;
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} else if (*commands=='M' || *commands=='m') {
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cmdline_memory_size <<= 20;
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commands++;
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}
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}
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while (*commands && *commands != ' ')
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commands++;
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}
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}
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extern unsigned short root_flags;
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extern unsigned short root_dev;
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extern unsigned short ram_flags;
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#define RAMDISK_IMAGE_START_MASK 0x07FF
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#define RAMDISK_PROMPT_FLAG 0x8000
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#define RAMDISK_LOAD_FLAG 0x4000
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extern int root_mountflags;
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char reboot_command[COMMAND_LINE_SIZE];
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static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
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2006-05-31 10:24:02 +02:00
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void __init per_cpu_patch(void)
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2006-02-27 08:27:19 +01:00
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{
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struct cpuid_patch_entry *p;
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unsigned long ver;
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int is_jbus;
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if (tlb_type == spitfire && !this_is_starfire)
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return;
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2006-02-09 11:52:44 +01:00
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is_jbus = 0;
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if (tlb_type != hypervisor) {
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__asm__ ("rdpr %%ver, %0" : "=r" (ver));
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2006-02-17 17:38:06 +01:00
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is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
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(ver >> 32UL) == __SERRANO_ID);
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2006-02-09 11:52:44 +01:00
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}
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2006-02-27 08:27:19 +01:00
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p = &__cpuid_patch;
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while (p < &__cpuid_patch_end) {
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unsigned long addr = p->addr;
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unsigned int *insns;
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switch (tlb_type) {
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case spitfire:
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insns = &p->starfire[0];
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break;
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case cheetah:
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case cheetah_plus:
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if (is_jbus)
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insns = &p->cheetah_jbus[0];
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else
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insns = &p->cheetah_safari[0];
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break;
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2006-02-05 00:40:53 +01:00
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case hypervisor:
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insns = &p->sun4v[0];
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break;
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2006-02-27 08:27:19 +01:00
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default:
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prom_printf("Unknown cpu type, halting.\n");
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prom_halt();
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};
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*(unsigned int *) (addr + 0) = insns[0];
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-27 08:27:19 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 0));
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*(unsigned int *) (addr + 4) = insns[1];
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-27 08:27:19 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 4));
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*(unsigned int *) (addr + 8) = insns[2];
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-27 08:27:19 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 8));
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*(unsigned int *) (addr + 12) = insns[3];
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-27 08:27:19 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 12));
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p++;
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}
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}
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2006-05-31 10:24:02 +02:00
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void __init sun4v_patch(void)
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2006-02-06 06:29:28 +01:00
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{
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2007-05-16 02:03:54 +02:00
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extern void sun4v_hvapi_init(void);
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2006-02-07 09:00:16 +01:00
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struct sun4v_1insn_patch_entry *p1;
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struct sun4v_2insn_patch_entry *p2;
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2006-02-06 06:29:28 +01:00
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if (tlb_type != hypervisor)
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return;
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2006-02-07 09:00:16 +01:00
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p1 = &__sun4v_1insn_patch;
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while (p1 < &__sun4v_1insn_patch_end) {
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2006-02-06 07:27:28 +01:00
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unsigned long addr = p1->addr;
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2006-02-06 06:29:28 +01:00
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2006-02-06 07:27:28 +01:00
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*(unsigned int *) (addr + 0) = p1->insn;
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-06 06:29:28 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 0));
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2006-02-06 07:27:28 +01:00
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p1++;
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}
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2006-02-07 09:00:16 +01:00
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p2 = &__sun4v_2insn_patch;
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while (p2 < &__sun4v_2insn_patch_end) {
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2006-02-06 07:27:28 +01:00
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unsigned long addr = p2->addr;
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*(unsigned int *) (addr + 0) = p2->insns[0];
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-06 07:27:28 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 0));
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2006-02-11 20:05:52 +01:00
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*(unsigned int *) (addr + 4) = p2->insns[1];
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2006-02-07 00:52:05 +01:00
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wmb();
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2006-02-06 07:27:28 +01:00
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__asm__ __volatile__("flush %0" : : "r" (addr + 4));
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p2++;
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2006-02-06 06:29:28 +01:00
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}
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2007-05-16 02:03:54 +02:00
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sun4v_hvapi_init();
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2006-02-06 06:29:28 +01:00
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}
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2006-05-31 10:24:02 +02:00
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#ifdef CONFIG_SMP
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void __init boot_cpu_id_too_large(int cpu)
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{
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prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
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cpu, NR_CPUS);
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prom_halt();
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}
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#endif
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2005-04-17 00:20:36 +02:00
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void __init setup_arch(char **cmdline_p)
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{
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/* Initialize PROM console and command line. */
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*cmdline_p = prom_getbootargs();
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2007-02-12 09:54:22 +01:00
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strcpy(boot_command_line, *cmdline_p);
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2008-03-19 11:54:09 +01:00
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parse_early_param();
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2005-04-17 00:20:36 +02:00
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2008-02-18 08:22:50 +01:00
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boot_flags_init(*cmdline_p);
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2009-11-28 02:33:43 +01:00
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#ifdef CONFIG_EARLYFB
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if (btext_find_display())
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#endif
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register_console(&prom_early_console);
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2008-02-18 08:22:50 +01:00
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2006-02-09 11:54:54 +01:00
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if (tlb_type == hypervisor)
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printk("ARCH: SUN4V\n");
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else
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printk("ARCH: SUN4U\n");
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2005-04-17 00:20:36 +02:00
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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idprom_init();
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if (!root_flags)
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root_mountflags &= ~MS_RDONLY;
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ROOT_DEV = old_decode_dev(root_dev);
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2006-03-19 21:46:55 +01:00
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#ifdef CONFIG_BLK_DEV_RAM
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2005-04-17 00:20:36 +02:00
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rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
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rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
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rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
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#endif
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2006-01-12 10:05:42 +01:00
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task_thread_info(&init_task)->kregs = &fake_swapper_regs;
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2005-04-17 00:20:36 +02:00
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#ifdef CONFIG_IP_PNP
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if (!ic_set_manually) {
|
2010-10-08 23:18:11 +02:00
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|
|
phandle chosen = prom_finddevice("/chosen");
|
2005-04-17 00:20:36 +02:00
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|
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u32 cl, sv, gw;
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cl = prom_getintdefault (chosen, "client-ip", 0);
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sv = prom_getintdefault (chosen, "server-ip", 0);
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gw = prom_getintdefault (chosen, "gateway-ip", 0);
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if (cl && sv) {
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ic_myaddr = cl;
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|
ic_servaddr = sv;
|
|
|
|
if (gw)
|
|
|
|
ic_gateway = gw;
|
|
|
|
#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
|
|
|
|
ic_proto_enabled = 0;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2006-02-27 08:24:22 +01:00
|
|
|
/* Get boot processor trap_block[] setup. */
|
[SPARC64]: Get SUN4V SMP working.
The sibling cpu bringup is extremely fragile. We can only
perform the most basic calls until we take over the trap
table from the firmware/hypervisor on the new cpu.
This means no accesses to %g4, %g5, %g6 since those can't be
TLB translated without our trap handlers.
In order to achieve this:
1) Change sun4v_init_mondo_queues() so that it can operate in
several modes.
It can allocate the queues, or install them in the current
processor, or both.
The boot cpu does both in it's call early on.
Later, the boot cpu allocates the sibling cpu queue, starts
the sibling cpu, then the sibling cpu loads them in.
2) init_cur_cpu_trap() is changed to take the current_thread_info()
as an argument instead of reading %g6 directly on the current
cpu.
3) Create a trampoline stack for the sibling cpus. We do our basic
kernel calls using this stack, which is locked into the kernel
image, then go to our proper thread stack after taking over the
trap table.
4) While we are in this delicate startup state, we put 0xdeadbeef
into %g4/%g5/%g6 in order to catch accidental accesses.
5) On the final prom_set_trap_table*() call, we put &init_thread_union
into %g6. This is a hack to make prom_world(0) work. All that
wants to do is restore the %asi register using
get_thread_current_ds().
Longer term we should just do the OBP calls to set the trap table by
hand just like we do for everything else. This would avoid that silly
prom_world(0) issue, then we can remove the init_thread_union hack.
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-17 10:29:17 +01:00
|
|
|
init_cur_cpu_trap(current_thread_info());
|
2006-02-27 08:32:33 +01:00
|
|
|
|
|
|
|
paging_init();
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* BUFFER is PAGE_SIZE bytes long. */
|
|
|
|
|
|
|
|
extern void smp_info(struct seq_file *);
|
|
|
|
extern void smp_bogo(struct seq_file *);
|
|
|
|
extern void mmu_info(struct seq_file *);
|
|
|
|
|
2005-09-26 09:32:17 +02:00
|
|
|
unsigned int dcache_parity_tl1_occurred;
|
|
|
|
unsigned int icache_parity_tl1_occurred;
|
|
|
|
|
2007-05-26 00:49:59 +02:00
|
|
|
int ncpus_probed;
|
2005-11-11 21:48:56 +01:00
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
static int show_cpuinfo(struct seq_file *m, void *__unused)
|
|
|
|
{
|
|
|
|
seq_printf(m,
|
|
|
|
"cpu\t\t: %s\n"
|
|
|
|
"fpu\t\t: %s\n"
|
2009-01-22 08:16:40 +01:00
|
|
|
"pmu\t\t: %s\n"
|
2006-03-09 02:18:19 +01:00
|
|
|
"prom\t\t: %s\n"
|
|
|
|
"type\t\t: %s\n"
|
2005-11-11 21:48:56 +01:00
|
|
|
"ncpus probed\t: %d\n"
|
|
|
|
"ncpus active\t: %d\n"
|
2005-09-26 09:32:17 +02:00
|
|
|
"D$ parity tl1\t: %u\n"
|
|
|
|
"I$ parity tl1\t: %u\n"
|
2005-04-17 00:20:36 +02:00
|
|
|
#ifndef CONFIG_SMP
|
|
|
|
"Cpu0ClkTck\t: %016lx\n"
|
|
|
|
#endif
|
|
|
|
,
|
|
|
|
sparc_cpu_type,
|
|
|
|
sparc_fpu_type,
|
2009-01-22 08:16:40 +01:00
|
|
|
sparc_pmu_type,
|
2006-03-09 02:18:19 +01:00
|
|
|
prom_version,
|
|
|
|
((tlb_type == hypervisor) ?
|
|
|
|
"sun4v" :
|
|
|
|
"sun4u"),
|
2005-11-11 21:48:56 +01:00
|
|
|
ncpus_probed,
|
|
|
|
num_online_cpus(),
|
2005-09-26 09:32:17 +02:00
|
|
|
dcache_parity_tl1_occurred,
|
2007-07-16 23:15:39 +02:00
|
|
|
icache_parity_tl1_occurred
|
2005-04-17 00:20:36 +02:00
|
|
|
#ifndef CONFIG_SMP
|
2007-07-16 23:15:39 +02:00
|
|
|
, cpu_data(0).clock_tick
|
2005-04-17 00:20:36 +02:00
|
|
|
#endif
|
|
|
|
);
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
smp_bogo(m);
|
|
|
|
#endif
|
|
|
|
mmu_info(m);
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
smp_info(m);
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *c_start(struct seq_file *m, loff_t *pos)
|
|
|
|
{
|
|
|
|
/* The pointer we are returning is arbitrary,
|
|
|
|
* it just has to be non-NULL and not IS_ERR
|
|
|
|
* in the success case.
|
|
|
|
*/
|
|
|
|
return *pos == 0 ? &c_start : NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
|
|
|
|
{
|
|
|
|
++*pos;
|
|
|
|
return c_start(m, pos);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void c_stop(struct seq_file *m, void *v)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2008-01-23 03:29:20 +01:00
|
|
|
const struct seq_operations cpuinfo_op = {
|
2005-04-17 00:20:36 +02:00
|
|
|
.start =c_start,
|
|
|
|
.next = c_next,
|
|
|
|
.stop = c_stop,
|
|
|
|
.show = show_cpuinfo,
|
|
|
|
};
|
|
|
|
|
|
|
|
extern int stop_a_enabled;
|
|
|
|
|
|
|
|
void sun_do_break(void)
|
|
|
|
{
|
|
|
|
if (!stop_a_enabled)
|
|
|
|
return;
|
|
|
|
|
|
|
|
prom_printf("\n");
|
|
|
|
flush_user_windows();
|
|
|
|
|
|
|
|
prom_cmdline();
|
|
|
|
}
|
2009-01-09 01:58:20 +01:00
|
|
|
EXPORT_SYMBOL(sun_do_break);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
int stop_a_enabled = 1;
|
2009-01-09 01:58:20 +01:00
|
|
|
EXPORT_SYMBOL(stop_a_enabled);
|