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Diffstat (limited to 'cfe/cfe/arch/mips/cpu/bcmcore/include/bcmnvram.h')
| -rw-r--r-- | cfe/cfe/arch/mips/cpu/bcmcore/include/bcmnvram.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/cfe/cfe/arch/mips/cpu/bcmcore/include/bcmnvram.h b/cfe/cfe/arch/mips/cpu/bcmcore/include/bcmnvram.h new file mode 100644 index 0000000..b9d37e6 --- /dev/null +++ b/cfe/cfe/arch/mips/cpu/bcmcore/include/bcmnvram.h @@ -0,0 +1,123 @@ +/* + Copyright 2001, Broadcom Corporation + All Rights Reserved. + + This is UNPUBLISHED PROPRIETARY SOURCE CODE of Broadcom Corporation; + the contents of this file may not be disclosed to third parties, copied or + duplicated in any form, in whole or in part, without the prior written + permission of Broadcom Corporation. +*/ +/* + * NVRAM variable manipulation + * + * Copyright (C) 2001 Broadcom Corporation + * + * $Id: bcmnvram.h,v 1.1 2001/10/31 18:49:25 mpl Exp $ + */ + +#ifndef _bcmnvram_h_ +#define _bcmnvram_h_ + +#ifndef _LANGUAGE_ASSEMBLY + +struct nvram_header { + unsigned long magic; + unsigned long len; + unsigned long crc_ver_init; /* 0:7 crc, 8:15 ver, 16:27 init, mem. test 28, 29-31 reserved */ + unsigned long config_refresh; /* 0:15 config, 16:31 refresh */ + unsigned long reserved; +}; + +struct nvram_tuple { + char *name; + char *value; + struct nvram_tuple *next; +}; + +/* Compatibility */ +typedef struct nvram_tuple EnvRec; + +/* + * Get the value of an NVRAM variable + * @param name name of variable to get + * @return value of variable or NULL if undefined + */ +extern char * nvram_get(const char *name); + +/* + * Get the value of an NVRAM variable + * @param name name of variable to get + * @return value of variable or NUL if undefined + */ +#define nvram_safe_get(name) (nvram_get(name) ? : "") + +/* + * Match an NVRAM variable + * @param name name of variable to match + * @param match value to compare against value of variable + * @return TRUE if variable is defined and its value is string equal to match or FALSE otherwise + */ +#define nvram_match(name, match) ({ \ + const char *value = nvram_get(name); \ + (value && !strcmp(value, match)); \ +}) + +/* + * Match an NVRAM variable + * @param name name of variable to match + * @param match value to compare against value of variable + * @return TRUE if variable is defined and its value is not string equal to invmatch or FALSE otherwise + */ +#define nvram_invmatch(name, invmatch) ({ \ + const char *value = nvram_get(name); \ + (value && strcmp(value, invmatch)); \ +}) + +/* + * Set the value of an NVRAM variable + * @param name name of variable to set + * @param value value of variable + * @return 0 on success and errno on failure + * NOTE: use nvram_commit to commit this change to flash. + */ +extern int nvram_set(const char *name, const char *value); + +/* + * Unset an NVRAM variable + * @param name name of variable to unset + * @return 0 on success and errno on failure + * NOTE: use nvram_commit to commit this change to flash. + */ +extern int nvram_unset(const char *name); + +/* + * Permanently commit NVRAM variables + * @return 0 on success and errno on failure + */ +extern int nvram_commit(void); + +/* + * Get all NVRAM variables (format name=value\0 ... \0\0) + * @param buf buffer to store variables + * @param count size of buffer in bytes + * @return 0 on success and errno on failure + */ +extern int nvram_getall(char *buf, int count); + +/* + * Invalidate the current NVRAM header + * @return 0 on success and errno on failure + */ +extern int nvram_invalidate(void); + +#endif /* _LANGUAGE_ASSEMBLY */ + +#define NVRAM_MAGIC 0x48534C46 /* 'FLSH' */ +#define NVRAM_VERSION 1 +#define NVRAM_HEADER_SIZE 20 +#define NVRAM_FIRST_LOC 0xbfcf8000 +#define NVRAM_LAST_LOC 0xbfff8000 +#define NVRAM_LOC_GAP 0x100000 +#define NVRAM_SPACE 0x8000 + +#endif /* _bcmnvram_h_ */ |