2 * Carsten Langgaard, carstenl@mips.com
3 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
4 * Portions copyright (C) 2009 Cisco Systems, Inc.
6 * This program is free software; you can distribute it and/or modify it
7 * under the terms of the GNU General Public License (Version 2) as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
19 * Kernel command line creation using the prom monitor (YAMON) argc/argv.
21 #include <linux/init.h>
22 #include <linux/string.h>
24 #include <asm/bootinfo.h>
29 * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer.
30 * This macro take care of sign extension.
32 #define prom_argv(index) ((char *)(long)_prom_argv[(index)])
34 char * __init prom_getcmdline(void)
36 return &(arcs_cmdline[0]);
39 void __init prom_init_cmdline(void)
46 len = strlen(arcs_cmdline);
48 arcs_cmdline[len] = ' ';
50 strlcpy(arcs_cmdline + len + 1, (char *)_prom_argv,
51 COMMAND_LINE_SIZE - len - 1);