75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/******************************************************************************
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* Copyright (c) 2004, 2008 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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#ifndef __NVRAM_H
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#define __NVRAM_H 1
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/* data structures */
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typedef struct {
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unsigned long addr;
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long len;
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} partition_t;
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/* macros */
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#define DEBUG(x...)
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// #define DEBUG(x...) printf(x);
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#ifndef ALIGN
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#define ALIGN(x, a) (((x) + ((a) - 1)) & ~((a) - 1))
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#endif
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#define NULL ((void *)0)
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#define PARTITION_HEADER_SIZE 16
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/* exported functions */
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#define nvram_access_proto(type,name) \
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type nvram_read_##name(unsigned int offset); \
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void nvram_write_##name(unsigned int offset, type data);
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nvram_access_proto(uint8_t, byte)
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nvram_access_proto(uint16_t, word)
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nvram_access_proto(uint32_t, dword)
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nvram_access_proto(uint64_t, qword)
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/* nvram.c */
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char *get_nvram_buffer(int len);
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void free_nvram_buffer(char *buffer);
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int nvramlog_printf(const char* fmt, ...);
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partition_t get_partition(unsigned int type, char *name);
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partition_t get_partition_fs(char *name, int namelen);
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void erase_nvram(int offset, int len);
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int wipe_partition(partition_t partition, int header_only);
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partition_t new_nvram_partition(int type, char *name, int len);
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partition_t new_nvram_partition_fs(int type, char *name, int namelen, int len);
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int increase_nvram_partition_size(partition_t partition, int newsize);
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int clear_nvram_partition(partition_t part);
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int delete_nvram_partition(partition_t part);
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void reset_nvram(void);
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void wipe_nvram(void);
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void nvram_debug(void);
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void nvram_init(uint32_t store_token, uint32_t fetch_token,
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long nv_size, void* nvram_addr);
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unsigned int get_nvram_size(void);
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/* envvar.c */
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char *nvram_get_env(partition_t part, char *envvar, int evlen);
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int nvram_add_env(partition_t part, char *envvar, int evlen, char *value, int vallen);
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int nvram_del_env(partition_t part, char *envvar, int evlen);
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int nvram_set_env(partition_t part, char *envvar, int evlen, char *val, int vlen);
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#endif
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