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Diffstat (limited to 'arch/mips/include/asm/mach-bcm47xx/nvram.h')
-rw-r--r--arch/mips/include/asm/mach-bcm47xx/nvram.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-bcm47xx/nvram.h b/arch/mips/include/asm/mach-bcm47xx/nvram.h
new file mode 100644
index 000000000000..0d8cc146f7a4
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm47xx/nvram.h
@@ -0,0 +1,36 @@
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
16struct 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
34extern int nvram_getenv(char *name, char *val, size_t val_len);
35
36#endif