diff options
Diffstat (limited to 'arch/mips/mips-boards/sim/cmdline.c')
-rw-r--r-- | arch/mips/mips-boards/sim/cmdline.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mips/mips-boards/sim/cmdline.c b/arch/mips/mips-boards/sim/cmdline.c new file mode 100644 index 000000000000..fef9fbd8e710 --- /dev/null +++ b/arch/mips/mips-boards/sim/cmdline.c | |||
@@ -0,0 +1,59 @@ | |||
1 | /* | ||
2 | * Carsten Langgaard, carstenl@mips.com | ||
3 | * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. | ||
4 | * | ||
5 | * This program is free software; you can distribute it and/or modify it | ||
6 | * under the terms of the GNU General Public License (Version 2) as | ||
7 | * published by the Free Software Foundation. | ||
8 | * | ||
9 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
12 | * for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License along | ||
15 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
16 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
17 | * | ||
18 | * Kernel command line creation using the prom monitor (YAMON) argc/argv. | ||
19 | */ | ||
20 | #include <linux/init.h> | ||
21 | #include <linux/string.h> | ||
22 | |||
23 | #include <asm/bootinfo.h> | ||
24 | |||
25 | extern int prom_argc; | ||
26 | extern int *_prom_argv; | ||
27 | |||
28 | /* | ||
29 | * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. | ||
30 | * This macro take care of sign extension. | ||
31 | */ | ||
32 | #define prom_argv(index) ((char *)(((int *)(int)_prom_argv)[(index)])) | ||
33 | |||
34 | char arcs_cmdline[CL_SIZE]; | ||
35 | |||
36 | char * __init prom_getcmdline(void) | ||
37 | { | ||
38 | return &(arcs_cmdline[0]); | ||
39 | } | ||
40 | |||
41 | |||
42 | void __init prom_init_cmdline(void) | ||
43 | { | ||
44 | char *cp; | ||
45 | int actr; | ||
46 | |||
47 | actr = 1; /* Always ignore argv[0] */ | ||
48 | |||
49 | cp = &(arcs_cmdline[0]); | ||
50 | while(actr < prom_argc) { | ||
51 | strcpy(cp, prom_argv(actr)); | ||
52 | cp += strlen(prom_argv(actr)); | ||
53 | *cp++ = ' '; | ||
54 | actr++; | ||
55 | } | ||
56 | if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ | ||
57 | --cp; | ||
58 | *cp = '\0'; | ||
59 | } | ||