release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/include/asm/mach-bcm47xx/nvram.h

   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 #include <linux/kernel.h>
  16
  17 struct nvram_header {
  18         u32 magic;
  19         u32 len;
  20         u32 crc_ver_init;       /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
  21         u32 config_refresh;     /* 0:15 sdram_config, 16:31 sdram_refresh */
  22         u32 config_ncdl;        /* ncdl values for memc */
  23 };
  24
  25 #define NVRAM_HEADER            0x48534C46      /* 'FLSH' */
  26 #define NVRAM_VERSION           1
  27 #define NVRAM_HEADER_SIZE       20
  28 #define NVRAM_SPACE             0x8000
  29
  30 #define FLASH_MIN               0x00020000      /* Minimum flash size */
  31
  32 #define NVRAM_MAX_VALUE_LEN 255
  33 #define NVRAM_MAX_PARAM_LEN 64
  34
  35 #define NVRAM_ERR_INV_PARAM     -8
  36 #define NVRAM_ERR_ENVNOTFOUND   -9
  37
  38 extern int nvram_getenv(char *name, char *val, size_t val_len);
  39
  40 static inline void nvram_parse_macaddr(char *buf, u8 *macaddr)
  41 {
  42         sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0], &macaddr[1],
  43                &macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
  44 }
  45
  46 #endif