/* * 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 PMC-Sierra Inc. * Author: Manish Lachwani (lachwani@pmc-sierra.com) */ #include <linux/sched.h> #include <linux/mm.h> #include <asm/io.h> #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/reboot.h> #include <asm/system.h> #include <linux/delay.h> #include <linux/smp.h> #include <asm/bootinfo.h> #include "setup.h" /* Call Vectors */ struct callvectors { int (*open) (char*, int, int); int (*close) (int); int (*read) (int, void*, int); int (*write) (int, void*, int); off_t (*lseek) (int, off_t, int); int (*printf) (const char*, ...); void (*cacheflush) (void); char* (*gets) (char*); }; struct callvectors* debug_vectors; extern unsigned long yosemite_base; extern unsigned long cpu_clock; unsigned char titan_ge_mac_addr_base[6]; const char *get_system_type(void) { return "PMC-Sierra Yosemite"; } static void prom_cpu0_exit(void) { void *nvram = YOSEMITE_NVRAM_BASE_ADDR; /* 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; } /* * Get the MAC address from the EEPROM using the I2C protocol */ void get_mac_address(char dest[6]) { /* Use the I2C command code in the i2c-yosemite */ } /* * 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 */ __init prom_init(int argc, char **arg, char **env, struct callvectors *cv) { int i = 0; /* Callbacks for halt, restart */ _machine_restart = (void (*)(char *))prom_exit; _machine_halt = prom_halt; _machine_power_off = prom_halt; #ifdef CONFIG_MIPS64 /* Do nothing for the 64-bit for now. Just implement for the 32-bit */ #else /* CONFIG_MIPS64 */ 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, " "); } 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++; } #endif /* CONFIG_MIPS64 */ mips_machgroup = MACH_GROUP_TITAN; mips_machtype = MACH_TITAN_YOSEMITE; get_mac_address(titan_ge_mac_addr_base); debug_vectors->printf("Booting Linux kernel...\n"); } void __init prom_free_prom_memory(void) { } void __init prom_fixup_mem_map(unsigned long start, unsigned long end) { } extern void asmlinkage smp_bootstrap(void); /* * SMP support */ int prom_setup_smp(void) { int num_cpus = 2; /* * We know that the RM9000 on the Jaguar ATX board has 2 cores. Hence, this * can be hardcoded for now. */ return num_cpus; } int prom_boot_secondary(int cpu, unsigned long sp, unsigned long gp) { /* Clear the semaphore */ *(volatile u_int32_t *)(0xbb000a68) = 0x80000000; return 1; } void prom_init_secondary(void) { clear_c0_config(CONF_CM_CMASK); set_c0_config(0x2); clear_c0_status(ST0_IM); set_c0_status(0x1ffff); } void prom_smp_finish(void) { }