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https://github.com/brain-hackers/u-boot-brain
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d8f9d2af96
Add libavb lib (3rd party library from AOSP), that implements support of AVB 2.0. This library is used for integrity checking of Android partitions on eMMC. libavb was added as it is and minimal changes were introduced to reduce maintenance cost, because it will be deviated from AOSP upstream in the future. Changes: - license headers changed to conform SPDX-style - avb_crc32.c dropped - updates in avb_sysdeps_posix.c/avb_sysdeps.h For additional details check [1] AVB 2.0 README. [1] https://android.googlesource.com/platform/external/avb/+/master/README.md Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* SPDX-License-Identifier: MIT
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*/
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#if !defined(AVB_INSIDE_LIBAVB_H) && !defined(AVB_COMPILATION)
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#error "Never include this file directly, include libavb.h instead."
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#endif
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#ifndef AVB_FOOTER_H_
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#define AVB_FOOTER_H_
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#include "avb_sysdeps.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Magic for the footer. */
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#define AVB_FOOTER_MAGIC "AVBf"
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#define AVB_FOOTER_MAGIC_LEN 4
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/* Size of the footer. */
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#define AVB_FOOTER_SIZE 64
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/* The current footer version used - keep in sync with avbtool. */
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#define AVB_FOOTER_VERSION_MAJOR 1
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#define AVB_FOOTER_VERSION_MINOR 0
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/* The struct used as a footer used on partitions, used to find the
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* AvbVBMetaImageHeader struct. This struct is always stored at the
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* end of a partition.
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*/
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typedef struct AvbFooter {
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/* 0: Four bytes equal to "AVBf" (AVB_FOOTER_MAGIC). */
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uint8_t magic[AVB_FOOTER_MAGIC_LEN];
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/* 4: The major version of the footer struct. */
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uint32_t version_major;
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/* 8: The minor version of the footer struct. */
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uint32_t version_minor;
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/* 12: The original size of the image on the partition. */
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uint64_t original_image_size;
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/* 20: The offset of the |AvbVBMetaImageHeader| struct. */
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uint64_t vbmeta_offset;
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/* 28: The size of the vbmeta block (header + auth + aux blocks). */
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uint64_t vbmeta_size;
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/* 36: Padding to ensure struct is size AVB_FOOTER_SIZE bytes. This
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* must be set to zeroes.
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*/
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uint8_t reserved[28];
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} AVB_ATTR_PACKED AvbFooter;
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/* Copies |src| to |dest| and validates, byte-swapping fields in the
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* process if needed. Returns true if valid, false if invalid.
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*/
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bool avb_footer_validate_and_byteswap(const AvbFooter* src, AvbFooter* dest)
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AVB_ATTR_WARN_UNUSED_RESULT;
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#ifdef __cplusplus
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}
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#endif
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#endif /* AVB_FOOTER_H_ */
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