/* * 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/init.h> #include <linux/sched.h> #include <linux/mm.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/smp.h> #include <asm/io.h> #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/reboot.h> #include <asm/smp-ops.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_freq; 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); #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"); } extern struct plat_smp_ops yos_smp_ops; /* * 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; pm_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_freq = simple_strtol(*env + strlen("cpuclock="), NULL, 10); env++; } prom_grab_secondary(); register_smp_ops(&yos_smp_ops); } void __init prom_free_prom_memory(void) { } void __init prom_fixup_mem_map(unsigned long start, unsigned long end) { }