target/linux/brcm47xx/files-2.6.23/arch/mips/bcm947xx/include/nvram.h

   1 /*
   2  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   3  *
   4  *  This program is free software; you can redistribute  it and/or modify it
   5  *  under  the terms of  the GNU General  Public License as published by the
   6  *  Free Software Foundation;  either version 2 of the  License, or (at your
   7  *  option) any later version.
   8  */
   9
  10 #ifndef __NVRAM_H
  11 #define __NVRAM_H
  12
  13 struct nvram_header {
  14         u32 magic;
  15         u32 len;
  16         u32 crc_ver_init;       /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
  17         u32 config_refresh;     /* 0:15 sdram_config, 16:31 sdram_refresh */
  18         u32 config_ncdl;        /* ncdl values for memc */
  19 };
  20
  21 struct nvram_tuple {
  22         char *name;
  23         char *value;
  24         struct nvram_tuple *next;
  25 };
  26
  27 #define NVRAM_HEADER            0x48534C46      /* 'FLSH' */
  28 #define NVRAM_VERSION           1
  29 #define NVRAM_HEADER_SIZE       20
  30 #define NVRAM_SPACE             0x8000
  31
  32 #define NVRAM_MAX_VALUE_LEN 255
  33 #define NVRAM_MAX_PARAM_LEN 64
  34
  35 char *nvram_get(const char *name);
  36
  37 #endif