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/*
* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __FMAP_H__
#define __FMAP_H__
#include <inttypes.h>
#include <stddef.h>
/* FMAP structs. See http://code.google.com/p/flashmap/wiki/FmapSpec */
#define FMAP_NAMELEN 32
#define FMAP_SIGNATURE "__FMAP__"
#define FMAP_SIGNATURE_SIZE 8
#define FMAP_SEARCH_STRIDE 64
typedef struct _FmapHeader {
char fmap_signature[FMAP_SIGNATURE_SIZE]; /* avoiding endian issues */
uint8_t fmap_ver_major;
uint8_t fmap_ver_minor;
uint64_t fmap_base;
uint32_t fmap_size;
char fmap_name[FMAP_NAMELEN];
uint16_t fmap_nareas;
} __attribute__((packed)) FmapHeader;
typedef struct _FmapAreaHeader {
uint32_t area_offset;
uint32_t area_size;
char area_name[FMAP_NAMELEN];
uint16_t area_flags;
} __attribute__((packed)) FmapAreaHeader;
/* Scan firmware image, pointed by [ptr] with length [size], for fmap header.
* Return pointer to fmap header, or NULL if not found.
*/
const char* FmapFind(const char *ptr, size_t size);
/* Look up fmap area by name, that is, strcmp(fh->fmap_name, name) == 0.
* Return index of fmap area, that is, ah[returned_index],
* or -1 if not found. */
int FmapAreaIndex(const FmapHeader* fh, const FmapAreaHeader* ah,
const char* name);
#endif /* __FMAP_H__ */
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