linux-vybrid_public/arch/mips/mti-sead3/sead3-cmdline.c

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
 */
#include <linux/init.h>
#include <linux/string.h>

#include <asm/bootinfo.h>

extern int prom_argc;
extern int *_prom_argv;

/*
 * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer.
 * This macro take care of sign extension.
 */
#define prom_argv(index) ((char *)(long)_prom_argv[(index)])

char * __init prom_getcmdline(void)
{
	return &(arcs_cmdline[0]);
}

void  __init prom_init_cmdline(void)
{
	char *cp;
	int actr;

	actr = 1; /* Always ignore argv[0] */

	cp = &(arcs_cmdline[0]);
	while (actr < prom_argc) {
		strcpy(cp, prom_argv(actr));
		cp += strlen(prom_argv(actr));
		*cp++ = ' ';
		actr++;
	}
	if (cp != &(arcs_cmdline[0])) {
		/* get rid of trailing space */
		--cp;
		*cp = '\0';
	}
}