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/* Copyright 2015 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __CROS_EC_SIGNED_HEADER_H
#define __CROS_EC_SIGNED_HEADER_H
#include "compile_time_macros.h"
#define FUSE_PADDING 0x55555555 /* baked in hw! */
#define FUSE_IGNORE 0xa3badaac /* baked in rom! */
#define FUSE_MAX 128 /* baked in rom! */
#define INFO_MAX 128 /* baked in rom! */
#define INFO_IGNORE 0xaa3c55c3 /* baked in rom! */
struct SignedHeader {
uint32_t magic; /* -1 (thanks, boot_sys!) */
uint32_t signature[96];
uint32_t img_chk_; /* top 32 bit of expected img_hash */
/* --------------------- everything below is part of img_hash */
uint32_t tag[7]; /* words 0-6 of RWR/FWR */
uint32_t keyid; /* word 7 of RWR */
uint32_t key[96]; /* public key to verify signature with */
uint32_t image_size;
uint32_t ro_base; /* readonly region */
uint32_t ro_max;
uint32_t rx_base; /* executable region */
uint32_t rx_max;
uint32_t fusemap[FUSE_MAX / (8 * sizeof(uint32_t))];
uint32_t infomap[INFO_MAX / (8 * sizeof(uint32_t))];
uint32_t epoch_; /* word 7 of FWR */
uint32_t major_; /* keyladder count */
uint32_t minor_;
uint64_t timestamp_; /* time of signing */
uint32_t p4cl_;
/* bits to and with FUSE_FW_DEFINED_BROM_APPLYSEC */
uint32_t applysec_;
/* bits to mesh with FUSE_FW_DEFINED_BROM_CONFIG1 */
uint32_t config1_;
/* bits to or with FUSE_FW_DEFINED_BROM_ERR_RESPONSE */
uint32_t err_response_;
/* action to take when expectation is violated */
uint32_t expect_response_;
uint32_t _pad[256 - 1 - 96 - 1 - 7 - 1 - 96 -
5*1 - 4 - 4 - 9*1 - 2 - 1];
uint32_t fuses_chk_; /* top 32 bit of expected fuses hash */
uint32_t info_chk_; /* top 32 bit of expected info hash */
};
BUILD_ASSERT(sizeof(struct SignedHeader) == 1024);
BUILD_ASSERT(offsetof(struct SignedHeader, info_chk_) == 1020);
#define TOP_IMAGE_SIZE_BIT (1 << \
(sizeof(((struct SignedHeader *)0)->image_size) * 8 - 1))
#endif /* __CROS_EC_SIGNED_HEADER_H */
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