2 * Copyright 2001 MontaVista Software Inc.
3 * Author: jsun@mvista.com or jsun@junsun.net
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 #include <linux/init.h>
12 #include <linux/sched.h>
13 #include <linux/bootmem.h>
15 #include <asm/addrspace.h>
16 #include <asm/bootinfo.h>
19 int (*open) (char*, int, int);
21 int (*read) (int, void*, int);
22 int (*write) (int, void*, int);
23 off_t (*lseek) (int, off_t, int);
24 int (*printf) (const char*, ...);
25 void (*cacheflush) (void);
26 char* (*gets) (char*);
29 struct callvectors* debug_vectors;
31 extern unsigned long gt64120_base;
33 const char *get_system_type(void)
35 return "Momentum Ocelot";
38 /* [jsun@junsun.net] PMON passes arguments in C main() style */
39 void __init prom_init(void)
42 char **arg = (char **) fw_arg1;
43 char **env = (char **) fw_arg2;
44 struct callvectors *cv = (struct callvectors *) fw_arg3;
48 /* save the PROM vectors for debugging use */
51 /* arg[0] is "g", the rest is boot parameters */
52 arcs_cmdline[0] = '\0';
53 for (i = 1; i < argc; i++) {
54 if (strlen(arcs_cmdline) + strlen(arg[i] + 1)
55 >= sizeof(arcs_cmdline))
57 strcat(arcs_cmdline, arg[i]);
58 strcat(arcs_cmdline, " ");
61 mips_machgroup = MACH_GROUP_MOMENCO;
62 mips_machtype = MACH_MOMENCO_OCELOT;
65 if (strncmp("gtbase", *env, 6) == 0) {
66 gt64120_base = simple_strtol(*env + strlen("gtbase="),
73 debug_vectors->printf("Booting Linux kernel...\n");
75 /* All the boards have at least 64MiB. If there's more, we
76 detect and register it later */
77 add_memory_region(0, 64 << 20, BOOT_MEM_RAM);
80 unsigned long __init prom_free_prom_memory(void)