prom.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:2k
- /*
- * Copyright 2002 Momentum Computer Inc.
- * Author: Matthew Dharm <mdharm@momenco.com>
- *
- * Based on Ocelot Linux port, which is
- * Copyright 2001 MontaVista Software Inc.
- * Author: jsun@mvista.com or jsun@junsun.net
- *
- * 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.
- */
- #include <linux/config.h>
- #include <linux/init.h>
- #include <linux/mm.h>
- #include <linux/sched.h>
- #include <linux/bootmem.h>
- #include <asm/addrspace.h>
- #include <asm/bootinfo.h>
- #include "gt64240.h"
- #include "ocelot_pld.h"
- 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;
- char arcs_cmdline[CL_SIZE];
- extern unsigned long gt64240_base;
- extern unsigned long bus_clock;
- #ifdef CONFIG_GALILLEO_GT64240_ETH
- extern unsigned char prom_mac_addr_base[6];
- #endif
- const char *get_system_type(void)
- {
- return "Momentum Ocelot";
- }
- /* [jsun@junsun.net] PMON passes arguments in C main() style */
- void __init prom_init(int argc, char **arg, char** env, struct callvectors *cv)
- {
- int i;
- uint32_t tmp;
- /* save the PROM vectors for debugging use */
- debug_vectors = cv;
- /* arg[0] is "g", the rest is boot parameters */
- arcs_cmdline[0] = ' ';
- 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, " ");
- }
- mips_machgroup = MACH_GROUP_MOMENCO;
- mips_machtype = MACH_MOMENCO_OCELOT_G;
- #ifdef CONFIG_GALILLEO_GT64240_ETH
- /* get the base MAC address for on-board ethernet ports */
- memcpy(prom_mac_addr_base, (void*)0xfc807cf2, 6);
- #endif
- while (*env) {
- if (strncmp("gtbase", *env, strlen("gtbase")) == 0) {
- gt64240_base = simple_strtol(*env + strlen("gtbase="),
- NULL, 16);
- }
- if (strncmp("busclock", *env, strlen("busclock")) == 0) {
- bus_clock = simple_strtol(*env + strlen("busclock="),
- NULL, 10);
- }
- *env++;
- }
- 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)
- {
- }