/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Copyright (C) 2003, 2004 PMC-Sierra Inc.
* Author: Manish Lachwani (lachwani@pmc-sierra.com)
* Copyright (C) 2004 Ralf Baechle
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/smp.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/reboot.h>
#include <asm/system.h>
#include <asm/bootinfo.h>
#include <asm/pmon.h>
#ifdef CONFIG_SMP
extern void prom_grab_secondary(void);
#else
#define prom_grab_secondary() do { } while (0)
#endif
#include "setup.h"
struct callvectors *debug_vectors;
extern unsigned long yosemite_base;
extern unsigned long cpu_clock;
const char *get_system_type(void)
{
return "PMC-Sierra Yosemite";
}
static void prom_cpu0_exit(void *arg)
{
void *nvram = (void *) YOSEMITE_RTC_BASE;
/* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */
writeb(0x84, nvram + 0xff7);
/* wait for the watchdog to go off */
mdelay(100 + (1000 / 16));
/* if the watchdog fails for some reason, let people know */
printk(KERN_NOTICE "Watchdog reset failed\n");
}
/*
* Reset the NVRAM over the local bus
*/
static void prom_exit(void)
{
#ifdef CONFIG_SMP
if (smp_processor_id())
/* CPU 1 */
smp_call_function(prom_cpu0_exit, NULL, 1, 1);
#endif
prom_cpu0_exit(NULL);
}
/*
* Halt the system
*/
static void prom_halt(void)
{
printk(KERN_NOTICE "\n** You can safely turn off the power\n");
while (1)
__asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
}
/*
* Init routine which accepts the variables from PMON
*/
void __init prom_init(void)
{
int argc = fw_arg0;
char **arg = (char **) fw_arg1;
char **env = (char **) fw_arg2;
struct callvectors *cv = (struct callvectors *) fw_arg3;
int i = 0;
/* Callbacks for halt, restart */
_machine_restart = (void (*)(char *)) prom_exit;
_machine_halt = prom_halt;
_machine_power_off = prom_halt;
debug_vectors = cv;
arcs_cmdline[0] = '\0';
/* Get the boot parameters */
for (i = 1; i < argc; i++) {
if (strlen(arcs_cmdline) + strlen(arg[i] + 1) >=
sizeof(arcs_cmdline))
break;
strcat(arcs_cmdline, arg[i]);
strcat(arcs_cmdline, " ");
}
#ifdef CONFIG_SERIAL_8250_CONSOLE
if ((strstr(arcs_cmdline, "console=ttyS")) == NULL)
strcat(arcs_cmdline, "console=ttyS0,115200");
#endif
while (*env) {
if (strncmp("ocd_base", *env, strlen("ocd_base")) == 0)
yosemite_base =
simple_strtol(*env + strlen("ocd_base="), NULL,
16);
if (strncmp("cpuclock", *env, strlen("cpuclock")) == 0)
cpu_clock =
simple_strtol(*env + strlen("cpuclock="), NULL,
10);
env++;
}
mips_machgroup = MACH_GROUP_TITAN;
mips_machtype = MACH_TITAN_YOSEMITE;
prom_grab_secondary();
}
unsigned long __init prom_free_prom_memory(void)
{
return 0;
}
void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
{
}
