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Diffstat (limited to 'arch/mips/powertv/cmdline.c')
-rw-r--r-- | arch/mips/powertv/cmdline.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/mips/powertv/cmdline.c b/arch/mips/powertv/cmdline.c new file mode 100644 index 0000000..98d73cb --- /dev/null +++ b/arch/mips/powertv/cmdline.c @@ -0,0 +1,52 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * Portions copyright (C) 2009 Cisco Systems, Inc. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * Kernel command line creation using the prom monitor (YAMON) argc/argv. + */ +#include <linux/init.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> + +#include "init.h" + +/* + * 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) +{ + int len; + + if (prom_argc != 1) + return; + + len = strlen(arcs_cmdline); + + arcs_cmdline[len] = ' '; + + strlcpy(arcs_cmdline + len + 1, (char *)_prom_argv, + COMMAND_LINE_SIZE - len - 1); +} |