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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>
37 lines
1018 B
C
37 lines
1018 B
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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#include "avb_footer.h"
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#include "avb_util.h"
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bool avb_footer_validate_and_byteswap(const AvbFooter* src, AvbFooter* dest) {
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avb_memcpy(dest, src, sizeof(AvbFooter));
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dest->version_major = avb_be32toh(dest->version_major);
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dest->version_minor = avb_be32toh(dest->version_minor);
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dest->original_image_size = avb_be64toh(dest->original_image_size);
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dest->vbmeta_offset = avb_be64toh(dest->vbmeta_offset);
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dest->vbmeta_size = avb_be64toh(dest->vbmeta_size);
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/* Check that magic is correct. */
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if (avb_safe_memcmp(dest->magic, AVB_FOOTER_MAGIC, AVB_FOOTER_MAGIC_LEN) !=
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0) {
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avb_error("Footer magic is incorrect.\n");
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return false;
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}
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/* Ensure we don't attempt to access any fields if the footer major
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* version is not supported.
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*/
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if (dest->version_major > AVB_FOOTER_VERSION_MAJOR) {
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avb_error("No support for footer version.\n");
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return false;
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}
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return true;
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}
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