diff options
author | Felix Fietkau <nbd@openwrt.org> | 2007-05-04 22:13:42 +0000 |
---|---|---|
committer | Felix Fietkau <nbd@openwrt.org> | 2007-05-04 22:13:42 +0000 |
commit | 833bb8f485c66b226387a4c1416ae4b171cccef9 (patch) | |
tree | d86fcca8f8dd54c88c107d5f8f5ff5b29bb17dd2 /target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/bcmnvram.h | |
parent | 7d3baf4131083226f877c1f571f1ae0cb025c018 (diff) | |
download | upstream-833bb8f485c66b226387a4c1416ae4b171cccef9.tar.gz upstream-833bb8f485c66b226387a4c1416ae4b171cccef9.tar.bz2 upstream-833bb8f485c66b226387a4c1416ae4b171cccef9.zip |
convert brcm-2.4 to the new target structure
SVN-Revision: 7092
Diffstat (limited to 'target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/bcmnvram.h')
-rw-r--r-- | target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/bcmnvram.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/bcmnvram.h b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/bcmnvram.h new file mode 100644 index 0000000000..c713b4be69 --- /dev/null +++ b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/include/bcmnvram.h @@ -0,0 +1,159 @@ +/* + * NVRAM variable manipulation + * + * Copyright 2006, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * $Id: bcmnvram.h,v 1.17 2006/03/02 12:33:44 honor Exp $ + */ + +#ifndef _bcmnvram_h_ +#define _bcmnvram_h_ + +#ifndef _LANGUAGE_ASSEMBLY + +#include <typedefs.h> +#include <bcmdefs.h> + +struct nvram_header { + uint32 magic; + uint32 len; + uint32 crc_ver_init; /* 0:7 crc, 8:15 ver, 16:31 sdram_init */ + uint32 config_refresh; /* 0:15 sdram_config, 16:31 sdram_refresh */ + uint32 config_ncdl; /* ncdl values for memc */ +}; + +struct nvram_tuple { + char *name; + char *value; + struct nvram_tuple *next; +}; + +/* + * Initialize NVRAM access. May be unnecessary or undefined on certain + * platforms. + */ +extern int nvram_init(void *sbh); + +/* + * Disable NVRAM access. May be unnecessary or undefined on certain + * platforms. + */ +extern void nvram_exit(void *sbh); + +/* + * Get the value of an NVRAM variable. The pointer returned may be + * invalid after a set. + * @param name name of variable to get + * @return value of variable or NULL if undefined + */ +extern char * nvram_get(const char *name); + +/* + * Read the reset GPIO value from the nvram and set the GPIO + * as input + */ +extern int BCMINITFN(nvram_resetgpio_init)(void *sbh); +extern int BCMINITFN(nvram_gpio_init)(const char *name, void *sbh); +extern int BCMINITFN(nvram_gpio_set)(const char *name, void *sbh, int type); + +/* + * 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) ? : "") + +#define nvram_safe_unset(name) ({ \ + if(nvram_get(name)) \ + nvram_unset(name); \ +}) + +#define nvram_safe_set(name, value) ({ \ + if(!nvram_get(name) || strcmp(nvram_get(name), value)) \ + nvram_set(name, value); \ +}) + +/* + * 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 + */ +static INLINE int +nvram_match(char *name, char *match) { + const char *value = nvram_get(name); + return (value && !strcmp(value, match)); +} + +/* + * Inversely 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 + */ +static INLINE int +nvram_invmatch(char *name, char *invmatch) { + const char *value = nvram_get(name); + return (value && strcmp(value, invmatch)); +} + +/* + * Set the value of an NVRAM variable. The name and value strings are + * copied into private storage. Pointers to previously set values + * may become invalid. The new value may be immediately + * retrieved but will not be permanently stored until a commit. + * @param name name of variable to set + * @param value value of variable + * @return 0 on success and errno on failure + */ +extern int nvram_set(const char *name, const char *value); + +/* + * Unset an NVRAM variable. Pointers to previously set values + * remain valid until a set. + * @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); + +/* + * Commit NVRAM variables to permanent storage. All pointers to values + * may be invalid after a commit. + * NVRAM values are undefined after a commit. + * @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); + +extern int file2nvram(char *filename, char *varname); +extern int nvram2file(char *varname, char *filename); + +#endif /* _LANGUAGE_ASSEMBLY */ + +#define NVRAM_MAGIC 0x48534C46 /* 'FLSH' */ +#define NVRAM_CLEAR_MAGIC 0x0 +#define NVRAM_INVALID_MAGIC 0xFFFFFFFF +#define NVRAM_VERSION 1 +#define NVRAM_HEADER_SIZE 20 +#define NVRAM_SPACE 0x8000 + +#define NVRAM_MAX_VALUE_LEN 255 +#define NVRAM_MAX_PARAM_LEN 64 + +#endif /* _bcmnvram_h_ */ |