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3b2fec7700
This field allows multiple product families to be independently versioned and released, without risk of having one product family's image flashed to another product family's chip. BUG=b:73728151 BRANCH=none TEST=make buildall -J Change-Id: I53f5e5b1e9ac7ea19997f8d1228a568e66c43d39 Reviewed-on: https://chromium-review.googlesource.com/935759 Commit-Ready: Jeff Andersen <jeffandersen@google.com> Tested-by: Jeff Andersen <jeffandersen@google.com> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-by: Nadim Taha <ntaha@google.com>
71 lines
2.6 KiB
C
71 lines
2.6 KiB
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __CROS_EC_SIGNED_HEADER_H
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#define __CROS_EC_SIGNED_HEADER_H
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#include "compile_time_macros.h"
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#define FUSE_PADDING 0x55555555 /* baked in hw! */
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#define FUSE_IGNORE 0xa3badaac /* baked in rom! */
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#define FUSE_MAX 128 /* baked in rom! */
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#define INFO_MAX 128 /* baked in rom! */
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#define INFO_IGNORE 0xaa3c55c3 /* baked in rom! */
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/* Default value for _pad[] words */
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#define SIGNED_HEADER_PADDING 0x33333333
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struct SignedHeader {
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uint32_t magic; /* -1 (thanks, boot_sys!) */
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uint32_t signature[96];
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uint32_t img_chk_; /* top 32 bit of expected img_hash */
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/* --------------------- everything below is part of img_hash */
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uint32_t tag[7]; /* words 0-6 of RWR/FWR */
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uint32_t keyid; /* word 7 of RWR */
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uint32_t key[96]; /* public key to verify signature with */
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uint32_t image_size;
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uint32_t ro_base; /* readonly region */
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uint32_t ro_max;
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uint32_t rx_base; /* executable region */
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uint32_t rx_max;
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uint32_t fusemap[FUSE_MAX / (8 * sizeof(uint32_t))];
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uint32_t infomap[INFO_MAX / (8 * sizeof(uint32_t))];
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uint32_t epoch_; /* word 7 of FWR */
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uint32_t major_; /* keyladder count */
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uint32_t minor_;
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uint64_t timestamp_; /* time of signing */
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uint32_t p4cl_;
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/* bits to and with FUSE_FW_DEFINED_BROM_APPLYSEC */
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uint32_t applysec_;
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/* bits to mesh with FUSE_FW_DEFINED_BROM_CONFIG1 */
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uint32_t config1_;
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/* bits to or with FUSE_FW_DEFINED_BROM_ERR_RESPONSE */
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uint32_t err_response_;
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/* action to take when expectation is violated */
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uint32_t expect_response_;
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/*
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* Padding to bring the total structure size to 1K. Note: First 17
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* words of _pad[] may be used by a second FIPS-compliant signature,
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* so don't put anything there.
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*/
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uint32_t _pad[23];
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/* Field for managing updates between RW product families. */
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uint32_t rw_product_family_;
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/* Board ID type, mask, flags (stored ^SIGNED_HEADER_PADDING) */
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uint32_t board_id_type;
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uint32_t board_id_type_mask;
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uint32_t board_id_flags;
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uint32_t dev_id0_; /* node id, if locked */
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uint32_t dev_id1_;
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uint32_t fuses_chk_; /* top 32 bit of expected fuses hash */
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uint32_t info_chk_; /* top 32 bit of expected info hash */
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};
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BUILD_ASSERT(sizeof(struct SignedHeader) == 1024);
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BUILD_ASSERT(offsetof(struct SignedHeader, info_chk_) == 1020);
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#define TOP_IMAGE_SIZE_BIT (1 << \
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(sizeof(((struct SignedHeader *)0)->image_size) * 8 - 1))
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#endif /* __CROS_EC_SIGNED_HEADER_H */
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