prom.c

linux 内核源代码

/*
 *  arch/mips/emma2rh/common/prom.c
 *      This file is prom file.
 *
 *  Copyright (C) NEC Electronics Corporation 2004-2006
 *
 *  This file is based on the arch/mips/ddb5xxx/common/prom.c
 *
 *	Copyright 2001 MontaVista Software Inc.
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#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 <asm/emma2rh/emma2rh.h>
#include <asm/debug.h>

const char *get_system_type(void)
{
	switch (mips_machtype) {
	case MACH_NEC_MARKEINS:
		return "NEC EMMA2RH Mark-eins";
	default:
		return "Unknown NEC board";
	}
}

/* [[e-mail]] PMON passes arguments in C main() style */
void __init prom_init(void)
{
	int argc = fw_arg0;
	char **arg = (char **)fw_arg1;
	int i;

	/* if user passes kernel args, ignore the default one */
	if (argc > 1)
		arcs_cmdline[0] = '\0';

	/* arg[0] is "g", the rest is boot parameters */
	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, " ");
	}

#if defined(CONFIG_MARKEINS)
	mips_machtype = MACH_NEC_MARKEINS;
	add_memory_region(0, EMMA2RH_RAM_SIZE, BOOT_MEM_RAM);
#endif

}

void __init prom_free_prom_memory(void)
{
}