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/*
* Based on Ocelot Linux port, which is
* Copyright 2001 MontaVista Software Inc.
* Author: jsun@mvista.com or jsun@junsun.net
*
* Copyright 2003 ICT CAS
* Author: Michael Guo <guoyi@ict.ac.cn>
*
* Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
*
* 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/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/bootmem.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
extern unsigned long bus_clock;
extern unsigned long cpu_clock_freq;
extern unsigned int memsize, highmemsize;
extern int putDebugChar(unsigned char byte);
static int argc;
/* pmon passes arguments in 32bit pointers */
static int *arg;
static int *env;
const char *get_system_type(void)
{
return "lemote-fulong";
}
void __init prom_init_cmdline(void)
{
int i;
long l;
/* arg[0] is "g", the rest is boot parameters */
arcs_cmdline[0] = '\0';
for (i = 1; i < argc; i++) {
l = (long)arg[i];
if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
>= sizeof(arcs_cmdline))
break;
strcat(arcs_cmdline, ((char *)l));
strcat(arcs_cmdline, " ");
}
}
void __init prom_init(void)
{
long l;
argc = fw_arg0;
arg = (int *)fw_arg1;
env = (int *)fw_arg2;
mips_machgroup = MACH_GROUP_LEMOTE;
mips_machtype = MACH_LEMOTE_FULONG;
prom_init_cmdline();
if ((strstr(arcs_cmdline, "console=")) == NULL)
strcat(arcs_cmdline, " console=ttyS0,115200");
if ((strstr(arcs_cmdline, "root=")) == NULL)
strcat(arcs_cmdline, " root=/dev/hda1");
#define parse_even_earlier(res, option, p) \
do { \
if (strncmp(option, (char *)p, strlen(option)) == 0) \
res = simple_strtol((char *)p + strlen(option"="), \
NULL, 10); \
} while (0)
l = (long)*env;
while (l != 0) {
parse_even_earlier(bus_clock, "busclock", l);
parse_even_earlier(cpu_clock_freq, "cpuclock", l);
parse_even_earlier(memsize, "memsize", l);
parse_even_earlier(highmemsize, "highmemsize", l);
env++;
l = (long)*env;
}
if (memsize == 0)
memsize = 256;
pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n",
bus_clock, cpu_clock_freq, memsize, highmemsize);
}
void __init prom_free_prom_memory(void)
{
}
void prom_putchar(char c)
{
putDebugChar(c);
}
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