| Waldemar Brodkorb | 121915c | 2010-06-08 19:06:01 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2005, Broadcom Corporation |
| 3 | * Copyright (C) 2006, Felix Fietkau <nbd@openwrt.org> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | */ |
| 10 | |
| 11 | #ifndef __NVRAM_H |
| 12 | #define __NVRAM_H |
| 13 | |
| 14 | #include <linux/types.h> |
| 15 | |
| 16 | struct nvram_header { |
| 17 | u32 magic; |
| 18 | u32 len; |
| 19 | u32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */ |
| 20 | u32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */ |
| 21 | u32 config_ncdl; /* ncdl values for memc */ |
| 22 | }; |
| 23 | |
| 24 | #define NVRAM_HEADER 0x48534C46 /* 'FLSH' */ |
| 25 | #define NVRAM_VERSION 1 |
| 26 | #define NVRAM_HEADER_SIZE 20 |
| 27 | #define NVRAM_SPACE 0x8000 |
| 28 | |
| 29 | #define FLASH_MIN 0x00020000 /* Minimum flash size */ |
| 30 | |
| 31 | #define NVRAM_MAX_VALUE_LEN 255 |
| 32 | #define NVRAM_MAX_PARAM_LEN 64 |
| 33 | |
| 34 | extern int nvram_getenv(char *name, char *val, size_t val_len); |
| 35 | |
| 36 | #endif |