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