| 1 | /* |
| 2 | * Generic PROM routines |
| 3 | * |
| 4 | * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License version 2 as published |
| 8 | * by the Free Software Foundation. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/init.h> |
| 14 | #include <linux/string.h> |
| 15 | |
| 16 | #include <asm/bootinfo.h> |
| 17 | |
| 18 | #include <prom/generic.h> |
| 19 | |
| 20 | static int *_prom_argc; |
| 21 | static char **_prom_argv; |
| 22 | static char **_prom_envp; |
| 23 | |
| 24 | char *generic_prom_getenv(char *envname) |
| 25 | { |
| 26 | char **env; |
| 27 | char *ret; |
| 28 | |
| 29 | ret = NULL; |
| 30 | for (env = _prom_envp; *env != NULL; env++) { |
| 31 | if (strcmp(envname, *env++) == 0) { |
| 32 | ret = *env; |
| 33 | break; |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | return ret; |
| 38 | } |
| 39 | |
| 40 | int generic_prom_present(void) |
| 41 | { |
| 42 | _prom_argc = (int *)fw_arg0; |
| 43 | _prom_argv = (char **)fw_arg1; |
| 44 | _prom_envp = (char **)fw_arg2; |
| 45 | |
| 46 | return 1; |
| 47 | } |
| 48 | |
