forked from luck/tmp_suning_uos_patched
53ae341926
o declare variables from cpu_*.c o declare function from cpu_32.c To do this introduce a new header "kernel.h" which is local to kernel/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
430 lines
9.1 KiB
C
430 lines
9.1 KiB
C
/*
|
|
* linux/arch/sparc64/kernel/setup.c
|
|
*
|
|
* Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
|
|
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
|
*/
|
|
|
|
#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/slab.h>
|
|
#include <asm/smp.h>
|
|
#include <linux/user.h>
|
|
#include <linux/screen_info.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/major.h>
|
|
#include <linux/string.h>
|
|
#include <linux/init.h>
|
|
#include <linux/inet.h>
|
|
#include <linux/console.h>
|
|
#include <linux/root_dev.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/cpu.h>
|
|
#include <linux/initrd.h>
|
|
|
|
#include <asm/system.h>
|
|
#include <asm/io.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/oplib.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/idprom.h>
|
|
#include <asm/head.h>
|
|
#include <asm/starfire.h>
|
|
#include <asm/mmu_context.h>
|
|
#include <asm/timer.h>
|
|
#include <asm/sections.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/mmu.h>
|
|
#include <asm/ns87303.h>
|
|
|
|
#ifdef CONFIG_IP_PNP
|
|
#include <net/ipconfig.h>
|
|
#endif
|
|
|
|
#include "entry.h"
|
|
#include "kernel.h"
|
|
|
|
/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
|
|
* operations in asm/ns87303.h
|
|
*/
|
|
DEFINE_SPINLOCK(ns87303_lock);
|
|
|
|
struct screen_info screen_info = {
|
|
0, 0, /* orig-x, orig-y */
|
|
0, /* unused */
|
|
0, /* orig-video-page */
|
|
0, /* orig-video-mode */
|
|
128, /* orig-video-cols */
|
|
0, 0, 0, /* unused, ega_bx, unused */
|
|
54, /* orig-video-lines */
|
|
0, /* orig-video-isVGA */
|
|
16 /* orig-video-points */
|
|
};
|
|
|
|
static void
|
|
prom_console_write(struct console *con, const char *s, unsigned n)
|
|
{
|
|
prom_write(s, n);
|
|
}
|
|
|
|
/* Exported for mm/init.c:paging_init. */
|
|
unsigned long cmdline_memory_size = 0;
|
|
|
|
static struct console prom_early_console = {
|
|
.name = "earlyprom",
|
|
.write = prom_console_write,
|
|
.flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
|
|
.index = -1,
|
|
};
|
|
|
|
/*
|
|
* Process kernel command line switches that are specific to the
|
|
* SPARC or that require special low-level processing.
|
|
*/
|
|
static void __init process_switch(char c)
|
|
{
|
|
switch (c) {
|
|
case 'd':
|
|
case 's':
|
|
break;
|
|
case 'h':
|
|
prom_printf("boot_flags_init: Halt!\n");
|
|
prom_halt();
|
|
break;
|
|
case 'p':
|
|
/* Just ignore, this behavior is now the default. */
|
|
break;
|
|
case 'P':
|
|
/* Force UltraSPARC-III P-Cache on. */
|
|
if (tlb_type != cheetah) {
|
|
printk("BOOT: Ignoring P-Cache force option.\n");
|
|
break;
|
|
}
|
|
cheetah_pcache_forced_on = 1;
|
|
add_taint(TAINT_MACHINE_CHECK);
|
|
cheetah_enable_pcache();
|
|
break;
|
|
|
|
default:
|
|
printk("Unknown boot switch (-%c)\n", c);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void __init boot_flags_init(char *commands)
|
|
{
|
|
while (*commands) {
|
|
/* Move to the start of the next "argument". */
|
|
while (*commands && *commands == ' ')
|
|
commands++;
|
|
|
|
/* Process any command switches, otherwise skip it. */
|
|
if (*commands == '\0')
|
|
break;
|
|
if (*commands == '-') {
|
|
commands++;
|
|
while (*commands && *commands != ' ')
|
|
process_switch(*commands++);
|
|
continue;
|
|
}
|
|
if (!strncmp(commands, "mem=", 4)) {
|
|
/*
|
|
* "mem=XXX[kKmM]" overrides the PROM-reported
|
|
* memory size.
|
|
*/
|
|
cmdline_memory_size = simple_strtoul(commands + 4,
|
|
&commands, 0);
|
|
if (*commands == 'K' || *commands == 'k') {
|
|
cmdline_memory_size <<= 10;
|
|
commands++;
|
|
} else if (*commands=='M' || *commands=='m') {
|
|
cmdline_memory_size <<= 20;
|
|
commands++;
|
|
}
|
|
}
|
|
while (*commands && *commands != ' ')
|
|
commands++;
|
|
}
|
|
}
|
|
|
|
extern unsigned short root_flags;
|
|
extern unsigned short root_dev;
|
|
extern unsigned short ram_flags;
|
|
#define RAMDISK_IMAGE_START_MASK 0x07FF
|
|
#define RAMDISK_PROMPT_FLAG 0x8000
|
|
#define RAMDISK_LOAD_FLAG 0x4000
|
|
|
|
extern int root_mountflags;
|
|
|
|
char reboot_command[COMMAND_LINE_SIZE];
|
|
|
|
static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
|
|
|
|
void __init per_cpu_patch(void)
|
|
{
|
|
struct cpuid_patch_entry *p;
|
|
unsigned long ver;
|
|
int is_jbus;
|
|
|
|
if (tlb_type == spitfire && !this_is_starfire)
|
|
return;
|
|
|
|
is_jbus = 0;
|
|
if (tlb_type != hypervisor) {
|
|
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
|
|
is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
|
|
(ver >> 32UL) == __SERRANO_ID);
|
|
}
|
|
|
|
p = &__cpuid_patch;
|
|
while (p < &__cpuid_patch_end) {
|
|
unsigned long addr = p->addr;
|
|
unsigned int *insns;
|
|
|
|
switch (tlb_type) {
|
|
case spitfire:
|
|
insns = &p->starfire[0];
|
|
break;
|
|
case cheetah:
|
|
case cheetah_plus:
|
|
if (is_jbus)
|
|
insns = &p->cheetah_jbus[0];
|
|
else
|
|
insns = &p->cheetah_safari[0];
|
|
break;
|
|
case hypervisor:
|
|
insns = &p->sun4v[0];
|
|
break;
|
|
default:
|
|
prom_printf("Unknown cpu type, halting.\n");
|
|
prom_halt();
|
|
};
|
|
|
|
*(unsigned int *) (addr + 0) = insns[0];
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 0));
|
|
|
|
*(unsigned int *) (addr + 4) = insns[1];
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 4));
|
|
|
|
*(unsigned int *) (addr + 8) = insns[2];
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 8));
|
|
|
|
*(unsigned int *) (addr + 12) = insns[3];
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 12));
|
|
|
|
p++;
|
|
}
|
|
}
|
|
|
|
void __init sun4v_patch(void)
|
|
{
|
|
extern void sun4v_hvapi_init(void);
|
|
struct sun4v_1insn_patch_entry *p1;
|
|
struct sun4v_2insn_patch_entry *p2;
|
|
|
|
if (tlb_type != hypervisor)
|
|
return;
|
|
|
|
p1 = &__sun4v_1insn_patch;
|
|
while (p1 < &__sun4v_1insn_patch_end) {
|
|
unsigned long addr = p1->addr;
|
|
|
|
*(unsigned int *) (addr + 0) = p1->insn;
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 0));
|
|
|
|
p1++;
|
|
}
|
|
|
|
p2 = &__sun4v_2insn_patch;
|
|
while (p2 < &__sun4v_2insn_patch_end) {
|
|
unsigned long addr = p2->addr;
|
|
|
|
*(unsigned int *) (addr + 0) = p2->insns[0];
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 0));
|
|
|
|
*(unsigned int *) (addr + 4) = p2->insns[1];
|
|
wmb();
|
|
__asm__ __volatile__("flush %0" : : "r" (addr + 4));
|
|
|
|
p2++;
|
|
}
|
|
|
|
sun4v_hvapi_init();
|
|
}
|
|
|
|
#ifdef CONFIG_SMP
|
|
void __init boot_cpu_id_too_large(int cpu)
|
|
{
|
|
prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
|
|
cpu, NR_CPUS);
|
|
prom_halt();
|
|
}
|
|
#endif
|
|
|
|
void __init setup_arch(char **cmdline_p)
|
|
{
|
|
/* Initialize PROM console and command line. */
|
|
*cmdline_p = prom_getbootargs();
|
|
strcpy(boot_command_line, *cmdline_p);
|
|
parse_early_param();
|
|
|
|
boot_flags_init(*cmdline_p);
|
|
register_console(&prom_early_console);
|
|
|
|
if (tlb_type == hypervisor)
|
|
printk("ARCH: SUN4V\n");
|
|
else
|
|
printk("ARCH: SUN4U\n");
|
|
|
|
#ifdef CONFIG_DUMMY_CONSOLE
|
|
conswitchp = &dummy_con;
|
|
#elif defined(CONFIG_PROM_CONSOLE)
|
|
conswitchp = &prom_con;
|
|
#endif
|
|
|
|
idprom_init();
|
|
|
|
if (!root_flags)
|
|
root_mountflags &= ~MS_RDONLY;
|
|
ROOT_DEV = old_decode_dev(root_dev);
|
|
#ifdef CONFIG_BLK_DEV_RAM
|
|
rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
|
|
rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
|
|
rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
|
|
#endif
|
|
|
|
task_thread_info(&init_task)->kregs = &fake_swapper_regs;
|
|
|
|
#ifdef CONFIG_IP_PNP
|
|
if (!ic_set_manually) {
|
|
int chosen = prom_finddevice ("/chosen");
|
|
u32 cl, sv, gw;
|
|
|
|
cl = prom_getintdefault (chosen, "client-ip", 0);
|
|
sv = prom_getintdefault (chosen, "server-ip", 0);
|
|
gw = prom_getintdefault (chosen, "gateway-ip", 0);
|
|
if (cl && sv) {
|
|
ic_myaddr = cl;
|
|
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
|
|
|
|
/* Get boot processor trap_block[] setup. */
|
|
init_cur_cpu_trap(current_thread_info());
|
|
|
|
paging_init();
|
|
}
|
|
|
|
/* 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 *);
|
|
|
|
unsigned int dcache_parity_tl1_occurred;
|
|
unsigned int icache_parity_tl1_occurred;
|
|
|
|
int ncpus_probed;
|
|
|
|
static int show_cpuinfo(struct seq_file *m, void *__unused)
|
|
{
|
|
seq_printf(m,
|
|
"cpu\t\t: %s\n"
|
|
"fpu\t\t: %s\n"
|
|
"prom\t\t: %s\n"
|
|
"type\t\t: %s\n"
|
|
"ncpus probed\t: %d\n"
|
|
"ncpus active\t: %d\n"
|
|
"D$ parity tl1\t: %u\n"
|
|
"I$ parity tl1\t: %u\n"
|
|
#ifndef CONFIG_SMP
|
|
"Cpu0ClkTck\t: %016lx\n"
|
|
#endif
|
|
,
|
|
sparc_cpu_type,
|
|
sparc_fpu_type,
|
|
prom_version,
|
|
((tlb_type == hypervisor) ?
|
|
"sun4v" :
|
|
"sun4u"),
|
|
ncpus_probed,
|
|
num_online_cpus(),
|
|
dcache_parity_tl1_occurred,
|
|
icache_parity_tl1_occurred
|
|
#ifndef CONFIG_SMP
|
|
, cpu_data(0).clock_tick
|
|
#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)
|
|
{
|
|
}
|
|
|
|
const struct seq_operations cpuinfo_op = {
|
|
.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();
|
|
}
|
|
|
|
int stop_a_enabled = 1;
|