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MIPS: ralink: adds prom and cmdline code

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Add minimal code to handle commandlines.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4892/
This commit is contained in:
John Crispin 2013-01-20 22:01:05 +01:00
parent c06e836ada
commit 7e47cefa69
1 changed files with 69 additions and 0 deletions
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69
arch/mips/ralink/prom.c Normal file
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/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2010 Joonas Lahtinen <joonas.lahtinen@gmail.com>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*/
#include <linux/string.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include "common.h"
struct ralink_soc_info soc_info;
const char *get_system_type(void)
{
return soc_info.sys_type;
}
static __init void prom_init_cmdline(int argc, char **argv)
{
int i;
pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
(unsigned int)fw_arg0, (unsigned int)fw_arg1,
(unsigned int)fw_arg2, (unsigned int)fw_arg3);
argc = fw_arg0;
argv = (char **) KSEG1ADDR(fw_arg1);
if (!argv) {
pr_debug("argv=%p is invalid, skipping\n",
argv);
return;
}
for (i = 0; i < argc; i++) {
char *p = (char *) KSEG1ADDR(argv[i]);
if (CPHYSADDR(p) && *p) {
pr_debug("argv[%d]: %s\n", i, p);
strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
}
}
}
void __init prom_init(void)
{
int argc;
char **argv;
prom_soc_init(&soc_info);
pr_info("SoC Type: %s\n", get_system_type());
prom_init_cmdline(argc, argv);
}
void __init prom_free_prom_memory(void)
{
}