62cf3bc0b5
The nvram contains some gpio configuration for boards. It is stored in a gpio<number>=name format e.g. gpio8=wps_button gpio4=robo_reset This patches adds a function to parse these entries, so other driver can use it. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5841/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
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* Copyright (C) 2005, Broadcom Corporation
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* Copyright (C) 2006, Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef __BCM47XX_NVRAM_H
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#define __BCM47XX_NVRAM_H
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#include <linux/types.h>
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#include <linux/kernel.h>
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struct nvram_header {
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u32 magic;
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u32 len;
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u32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */
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u32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */
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u32 config_ncdl; /* ncdl values for memc */
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};
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#define NVRAM_HEADER 0x48534C46 /* 'FLSH' */
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#define NVRAM_VERSION 1
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#define NVRAM_HEADER_SIZE 20
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#define NVRAM_SPACE 0x8000
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#define FLASH_MIN 0x00020000 /* Minimum flash size */
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#define NVRAM_MAX_VALUE_LEN 255
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#define NVRAM_MAX_PARAM_LEN 64
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extern int bcm47xx_nvram_getenv(char *name, char *val, size_t val_len);
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static inline void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
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{
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if (strchr(buf, ':'))
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sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
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&macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
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&macaddr[5]);
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else if (strchr(buf, '-'))
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sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
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&macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
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&macaddr[5]);
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else
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printk(KERN_WARNING "Can not parse mac address: %s\n", buf);
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}
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int bcm47xx_nvram_gpio_pin(const char *name);
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#endif /* __BCM47XX_NVRAM_H */
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