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edb6310a DL |
1 | /* |
2 | * prom.c: | |
3 | * | |
4 | * Copyright 2008 NXP Semiconductors | |
5 | * Chris Steel <chris.steel@nxp.com> | |
6 | * Daniel Laird <daniel.j.laird@nxp.com> | |
7 | * | |
8 | * Based on software written by: | |
9 | * Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | */ | |
25 | #include <linux/init.h> | |
26 | #include <asm/bootinfo.h> | |
27 | #include <linux/string.h> | |
28 | ||
29 | void __init prom_init_cmdline(void) | |
30 | { | |
31 | int argc = fw_arg0; | |
32 | char **argv = (char **)fw_arg1; | |
33 | char *c = &(arcs_cmdline[0]); | |
34 | int i; | |
35 | ||
36 | for (i = 1; i < argc; i++) { | |
37 | strcpy(c, argv[i]); | |
38 | c += strlen(argv[i]); | |
39 | if (i < argc-1) | |
40 | *c++ = ' '; | |
41 | } | |
42 | *c = 0; | |
43 | } | |
44 | ||
45 | char __init *prom_getenv(char *envname) | |
46 | { | |
47 | extern char **prom_envp; | |
48 | char **env = prom_envp; | |
49 | int i; | |
50 | ||
51 | i = strlen(envname); | |
52 | ||
53 | while (*env) { | |
54 | if (strncmp(envname, *env, i) == 0 && *(*env+i) == '=') | |
55 | return *env + i + 1; | |
56 | env++; | |
57 | } | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | void __init prom_free_prom_memory(void) | |
63 | { | |
64 | } | |
65 | ||
66 | char * __init prom_getcmdline(void) | |
67 | { | |
68 | return arcs_cmdline; | |
69 | } |