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50 lines
1.4 KiB
50 lines
1.4 KiB
4 months ago
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/*
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* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __FMAP_H__
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#define __FMAP_H__
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#include <inttypes.h>
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#include <stddef.h>
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/* FMAP structs. See http://code.google.com/p/flashmap/wiki/FmapSpec */
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#define FMAP_NAMELEN 32
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#define FMAP_SIGNATURE "__FMAP__"
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#define FMAP_SIGNATURE_SIZE 8
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#define FMAP_SEARCH_STRIDE 4
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#define FMAP_VER_MAJOR 1
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typedef struct _FmapHeader {
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char fmap_signature[FMAP_SIGNATURE_SIZE]; /* avoiding endian issues */
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uint8_t fmap_ver_major;
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uint8_t fmap_ver_minor;
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uint64_t fmap_base;
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uint32_t fmap_size;
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char fmap_name[FMAP_NAMELEN];
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uint16_t fmap_nareas;
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} __attribute__((packed)) FmapHeader;
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typedef struct _FmapAreaHeader {
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uint32_t area_offset;
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uint32_t area_size;
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char area_name[FMAP_NAMELEN];
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uint16_t area_flags;
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} __attribute__((packed)) FmapAreaHeader;
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/* Find and point to the FMAP header within the buffer */
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FmapHeader *fmap_find(uint8_t *ptr, size_t size);
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/* Search for an area by name, return pointer to its beginning */
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uint8_t *fmap_find_by_name(uint8_t *ptr, size_t size,
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/* optional, will call fmap_find() if NULL */
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FmapHeader *fmap,
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/* The area name to search for */
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const char *name,
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/* optional, return pointer to entry if not NULL */
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FmapAreaHeader **ah);
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#endif /* __FMAP_H__ */
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