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3070033a SH |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. | |
7 | */ | |
8 | #include <linux/init.h> | |
9 | #include <linux/string.h> | |
10 | ||
11 | #include <asm/bootinfo.h> | |
12 | ||
13 | extern int prom_argc; | |
14 | extern int *_prom_argv; | |
15 | ||
16 | /* | |
17 | * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. | |
18 | * This macro take care of sign extension. | |
19 | */ | |
20 | #define prom_argv(index) ((char *)(long)_prom_argv[(index)]) | |
21 | ||
22 | char * __init prom_getcmdline(void) | |
23 | { | |
24 | return &(arcs_cmdline[0]); | |
25 | } | |
26 | ||
27 | void __init prom_init_cmdline(void) | |
28 | { | |
29 | char *cp; | |
30 | int actr; | |
31 | ||
32 | actr = 1; /* Always ignore argv[0] */ | |
33 | ||
34 | cp = &(arcs_cmdline[0]); | |
35 | while (actr < prom_argc) { | |
36 | strcpy(cp, prom_argv(actr)); | |
37 | cp += strlen(prom_argv(actr)); | |
38 | *cp++ = ' '; | |
39 | actr++; | |
40 | } | |
41 | if (cp != &(arcs_cmdline[0])) { | |
42 | /* get rid of trailing space */ | |
43 | --cp; | |
44 | *cp = '\0'; | |
45 | } | |
46 | } |