upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/lib/libavb/avb_sha.h

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/* SPDX-License-Identifier: MIT */
/*
* Copyright (C) 2016 The Android Open Source Project
*/
#ifdef AVB_INSIDE_LIBAVB_H
#error "You can't include avb_sha.h in the public header libavb.h."
#endif
#ifndef AVB_COMPILATION
#error "Never include this file, it may only be used from internal avb code."
#endif
#ifndef AVB_SHA_H_
#define AVB_SHA_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "avb_crypto.h"
#include "avb_sysdeps.h"
/* Block size in bytes of a SHA-256 digest. */
#define AVB_SHA256_BLOCK_SIZE 64
/* Block size in bytes of a SHA-512 digest. */
#define AVB_SHA512_BLOCK_SIZE 128
/* Data structure used for SHA-256. */
typedef struct {
uint32_t h[8];
uint32_t tot_len;
uint32_t len;
uint8_t block[2 * AVB_SHA256_BLOCK_SIZE];
uint8_t buf[AVB_SHA256_DIGEST_SIZE]; /* Used for storing the final digest. */
} AvbSHA256Ctx;
/* Data structure used for SHA-512. */
typedef struct {
uint64_t h[8];
uint32_t tot_len;
uint32_t len;
uint8_t block[2 * AVB_SHA512_BLOCK_SIZE];
uint8_t buf[AVB_SHA512_DIGEST_SIZE]; /* Used for storing the final digest. */
} AvbSHA512Ctx;
/* Initializes the SHA-256 context. */
void avb_sha256_init(AvbSHA256Ctx* ctx);
/* Updates the SHA-256 context with |len| bytes from |data|. */
void avb_sha256_update(AvbSHA256Ctx* ctx, const uint8_t* data, uint32_t len);
/* Returns the SHA-256 digest. */
uint8_t* avb_sha256_final(AvbSHA256Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT;
/* Initializes the SHA-512 context. */
void avb_sha512_init(AvbSHA512Ctx* ctx);
/* Updates the SHA-512 context with |len| bytes from |data|. */
void avb_sha512_update(AvbSHA512Ctx* ctx, const uint8_t* data, uint32_t len);
/* Returns the SHA-512 digest. */
uint8_t* avb_sha512_final(AvbSHA512Ctx* ctx) AVB_ATTR_WARN_UNUSED_RESULT;
#ifdef __cplusplus
}
#endif
#endif /* AVB_SHA_H_ */