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c82900b661
Flashmap, or simply fmap, is a binary data format for describing region offsets, sizes, and certain attributes and is widely used by coreboot. This patch adds support for the fmap data format version 1.1 and adds --fmap and --fmap-file arguments. Using --fmap will make flashrom to search the ROM content for fmap data. Using --fmap-file will make flashrom search a supplied file for fmap data. An example of how to update the COREBOOT region of a ROM: flashrom -p programmer --fmap -w coreboot.rom -i COREBOOT flashrom -p programmer --fmap-file coreboot.rom -w coreboot.rom -i COREBOOT The fmap functions are mostly copied from cbfstool. Currently it is made mutually exclusive with other layout options until we are more clever about this input. Change-Id: I0e7fad38ed79a84d41358e1f175c36d255786c12 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Signed-off-by: David Hendricks <dhendricks@fb.com> Reviewed-on: https://review.coreboot.org/23203 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Tested-by: David Hendricks <david.hendricks@gmail.com> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: Nico Huber <nico.h@gmx.de>
72 lines
2.9 KiB
C
72 lines
2.9 KiB
C
/*
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* Copyright 2015, Google Inc.
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* Copyright 2018-present, Facebook Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*/
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#ifndef __FMAP_H__
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#define __FMAP_H__ 1
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#include <inttypes.h>
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#include <stdbool.h>
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#define FMAP_SIGNATURE "__FMAP__"
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#define FMAP_VER_MAJOR 1 /* this header's FMAP minor version */
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#define FMAP_VER_MINOR 1 /* this header's FMAP minor version */
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#define FMAP_STRLEN 32 /* maximum length for strings */
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struct fmap_area {
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uint32_t offset; /* offset relative to base */
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uint32_t size; /* size in bytes */
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uint8_t name[FMAP_STRLEN]; /* descriptive name */
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uint16_t flags; /* flags for this area */
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} __attribute__((packed));
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struct fmap {
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uint8_t signature[8]; /* "__FMAP__" */
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uint8_t ver_major; /* major version */
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uint8_t ver_minor; /* minor version */
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uint64_t base; /* address of the firmware binary */
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uint32_t size; /* size of firmware binary in bytes */
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uint8_t name[FMAP_STRLEN]; /* name of this firmware binary */
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uint16_t nareas; /* number of areas described by
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fmap_areas[] below */
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struct fmap_area areas[];
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} __attribute__((packed));
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int fmap_read_from_buffer(struct fmap **fmap_out, const uint8_t *buf, size_t len);
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int fmap_read_from_rom(struct fmap **fmap_out, struct flashctx *const flashctx, size_t rom_offset, size_t len);
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#endif /* __FMAP_H__*/
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