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60 lines
1.5 KiB
C
60 lines
1.5 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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*
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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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extern int prom_argc;
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extern int *_prom_argv;
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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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char *cp;
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int actr;
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actr = 1; /* Always ignore argv[0] */
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cp = &(arcs_cmdline[0]);
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while(actr < prom_argc) {
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strcpy(cp, prom_argv(actr));
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cp += strlen(prom_argv(actr));
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*cp++ = ' ';
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actr++;
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}
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if (cp != &(arcs_cmdline[0])) {
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/* get rid of trailing space */
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--cp;
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*cp = '\0';
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}
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}
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