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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/
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John Crispin committed Feb 17, 2013
1 parent c06e836 commit 7e47cef
Showing 1 changed file with 69 additions and 0 deletions.
69 changes: 69 additions & 0 deletions arch/mips/ralink/prom.c
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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)
{
}

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