From c78cbf49c4edf2f9ca9e56d4b87a5d6ef08b7fed Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 30 Sep 2005 13:59:37 +0100 Subject: Support for MIPSsim, the cycle accurate MIPS simulator. Signed-off-by: Ralf Baechle --- arch/mips/mips-boards/sim/cmdline.c | 59 +++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 arch/mips/mips-boards/sim/cmdline.c (limited to 'arch/mips/mips-boards/sim/cmdline.c') diff --git a/arch/mips/mips-boards/sim/cmdline.c b/arch/mips/mips-boards/sim/cmdline.c new file mode 100644 index 00000000000..fef9fbd8e71 --- /dev/null +++ b/arch/mips/mips-boards/sim/cmdline.c @@ -0,0 +1,59 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * 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 +#include + +#include + +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 *)(((int *)(int)_prom_argv)[(index)])) + +char arcs_cmdline[CL_SIZE]; + +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'; +} -- cgit v1.2.3-70-g09d2