6f2a01f743
For simplicity we are going to impose this restriction to coreboot. Note however that this is only a restriction for coreboot itself. The FMAP tool itself is still a generic tool that does not require the FMAP to start at offset 0. Add an defacto empty fmap_config.h to our test cases, since fmap.h now includes fmap_config.h. Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com> Change-Id: Iba04ebdcd5557664a865d2854028dd811f052249 Reviewed-on: https://review.coreboot.org/c/coreboot/+/86770 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jakub "Kuba" Czapiga <czapiga@google.com>
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _FMAP_H_
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#define _FMAP_H_
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#include <commonlib/bsd/fmap_serialized.h>
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#include <commonlib/region.h>
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#include <fmap_config.h>
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#include <stddef.h>
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#include <stdint.h>
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#if FMAP_SECTION_FLASH_START != 0
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#error "FMAP must always start flash address 0"
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#endif
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/* Locate the named area in the fmap and fill in a region device representing
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* that area. The region is a sub-region of the readonly boot media. Return
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* 0 on success, < 0 on error. */
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int fmap_locate_area_as_rdev(const char *name, struct region_device *area);
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/* Just like fmap_locate_area_as_rdev(), however the region device is
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* created from the RW boot device. */
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int fmap_locate_area_as_rdev_rw(const char *name, struct region_device *area);
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/* Locate the named area in the fmap and fill in a region with the
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* offset and size of that area within the boot media. Return 0 on success,
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* < 0 on error. */
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int fmap_locate_area(const char *name, struct region *r);
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/* Find fmap area name by offset and size.
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* Return 0 on success, < 0 on error. */
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int fmap_find_region_name(const struct region * const ar,
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char name[FMAP_STRLEN]);
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/* Read fmap area into provided buffer.
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* Return size read on success, < 0 on error. */
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ssize_t fmap_read_area(const char *name, void *buffer, size_t size);
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/* Write provided buffer into fmap area.
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* Return size written on success, < 0 on error. */
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ssize_t fmap_overwrite_area(const char *name, const void *buffer, size_t size);
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/* Get offset of FMAP in flash. */
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uint64_t get_fmap_flash_offset(void);
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#endif
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