target/linux/bcm53xx/files/include/linux/bcm47xx_nvram.h

   1 /*
   2  *  Copyright (C) 2005, Broadcom Corporation
   3  *  Copyright (C) 2006, Felix Fietkau <nbd@openwrt.org>
   4  *  Copyright (C) 2014 Hauke Mehrtens <hauke@hauke-m.de>
   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 as published by the
   8  *  Free Software Foundation;  either version 2 of the  License, or (at your
   9  *  option) any later version.
  10  */
  11
  12 #ifndef __BCM47XX_NVRAM_H
  13 #define __BCM47XX_NVRAM_H
  14
  15 #include <linux/types.h>
  16 #include <linux/kernel.h>
  17
  18 struct nvram_header {
  19         u32 magic;
  20         u32 len;
  21         u32 crc_ver_init;       /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
  22         u32 config_refresh;     /* 0:15 sdram_config, 16:31 sdram_refresh */
  23         u32 config_ncdl;        /* ncdl values for memc */
  24 };
  25
  26 #define NVRAM_HEADER            0x48534C46      /* 'FLSH' */
  27 #define NVRAM_VERSION           1
  28 #define NVRAM_HEADER_SIZE       20
  29 #define NVRAM_SPACE             0x8000
  30
  31 #define FLASH_MIN               0x00020000      /* Minimum flash size */
  32
  33 #define NVRAM_MAX_VALUE_LEN 255
  34 #define NVRAM_MAX_PARAM_LEN 64
  35
  36 #ifdef CONFIG_BCM47XX
  37 int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len);
  38
  39 int bcm47xx_nvram_gpio_pin(const char *name);
  40 #else
  41 static inline int bcm47xx_nvram_getenv(const char *name, char *val,
  42                                        size_t val_len)
  43 {
  44         return -ENXIO;
  45 }
  46
  47 static inline int bcm47xx_nvram_gpio_pin(const char *name)
  48 {
  49         return -ENXIO;
  50 }
  51 #endif
  52
  53 static inline void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
  54 {
  55         if (strchr(buf, ':'))
  56                 sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
  57                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
  58                         &macaddr[5]);
  59         else if (strchr(buf, '-'))
  60                 sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
  61                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
  62                         &macaddr[5]);
  63         else
  64                 pr_warn("Can not parse mac address: %s\n", buf);
  65 }
  66 #endif /* __BCM47XX_NVRAM_H */