mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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0c3ba249ab
This reduces the number of exported header files to the minimum needed by
the existing userspace utilities and firmware implementations.
BUG=chromium:221544
BRANCH=none
TEST=manual, trybots
CQ-DEPEND=CL:47019,CL:47022,CL:47023
sudo FEATURES=test emerge vboot_reference
FEATURES=test emerge-$BOARD \
vboot_reference \
chromeos-cryptohome \
chromeos-installer \
chromeos-u-boot \
peach-u-boot \
depthcharge
Change-Id: I2946cc2dbaf5459a6c5eca92ca57d546498e6d85
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47021
Reviewed-by: Randall Spangler <rspangler@chromium.org>
92 lines
3.4 KiB
C
92 lines
3.4 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Data structure of Google Binary Block (GBB)
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*/
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#ifndef VBOOT_REFERENCE_GBB_HEADER_H_
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#define VBOOT_REFERENCE_GBB_HEADER_H_
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#include <stdint.h>
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#define GBB_HEADER_SIZE 128
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#define GBB_SIGNATURE "$GBB"
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#define GBB_SIGNATURE_SIZE 4
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/*
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* GBB version constants.
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*
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* If the major version is different than the reader can handle, it shouldn't
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* attempt to parse the GBB.
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*
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* If the minor version is different, the reader can still parse it. If the
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* minor version is greater than expected, new fields were added in a way which
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* does not interfere with the old fields. If it's less than expected, some of
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* the fields expected by the reader aren't initialized, and the reader should
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* return default values for those fields.
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*/
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#define GBB_MAJOR_VER 1
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#define GBB_MINOR_VER 1
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/* Maximum length of a HWID in bytes, counting terminating null. */
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#define GBB_HWID_MAX_SIZE 256
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/* Flags for .flags field */
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/* Reduce the dev screen delay to 2 sec from 30 sec to speedup factory. */
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#define GBB_FLAG_DEV_SCREEN_SHORT_DELAY 0x00000001
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/*
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* BIOS should load option ROMs from arbitrary PCI devices. We'll never enable
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* this ourselves because it executes non-verified code, but if a customer
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* wants to void their warranty and set this flag in the read-only flash, they
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* should be able to do so.
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*/
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#define GBB_FLAG_LOAD_OPTION_ROMS 0x00000002
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/*
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* The factory flow may need the BIOS to boot a non-ChromeOS kernel if the
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* dev-switch is on. This flag allows that.
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*/
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#define GBB_FLAG_ENABLE_ALTERNATE_OS 0x00000004
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/* Force dev switch on, regardless of physical/keyboard dev switch position. */
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#define GBB_FLAG_FORCE_DEV_SWITCH_ON 0x00000008
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/* Allow booting from USB in dev mode even if dev_boot_usb=0. */
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#define GBB_FLAG_FORCE_DEV_BOOT_USB 0x00000010
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/* Disable firmware rollback protection. */
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#define GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK 0x00000020
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/* Allow Enter key to trigger dev->tonorm screen transition */
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#define GBB_FLAG_ENTER_TRIGGERS_TONORM 0x00000040
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/* Allow booting Legacy OSes in dev mode even if dev_boot_legacy=0. */
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#define GBB_FLAG_FORCE_DEV_BOOT_LEGACY 0x00000080
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/* Allow booting using alternate keys for FAFT servo testing */
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#define GBB_FLAG_FAFT_KEY_OVERIDE 0x00000100
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef struct GoogleBinaryBlockHeader
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{
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/* Fields present in version 1.0 */
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uint8_t signature[GBB_SIGNATURE_SIZE]; /* GBB_SIGNATURE "$GBB" */
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uint16_t major_version; /* See GBB_MAJOR_VER */
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uint16_t minor_version; /* See GBB_MINOR_VER */
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uint32_t header_size; /* size of GBB header in bytes */
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uint32_t flags; /* Flags (see GBB_FLAG_*), should be 0 for 1.0. */
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/* Offsets (from start of header) and sizes (in bytes) of components */
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uint32_t hwid_offset; /* HWID */
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uint32_t hwid_size;
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uint32_t rootkey_offset; /* Root key */
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uint32_t rootkey_size;
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uint32_t bmpfv_offset; /* BMP FV */
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uint32_t bmpfv_size;
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uint32_t recovery_key_offset; /* Recovery key */
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uint32_t recovery_key_size;
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uint8_t pad[80]; /* To match GBB_HEADER_SIZE. Initialize to 0. */
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} __attribute__((packed)) GoogleBinaryBlockHeader;
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* VBOOT_REFERENCE_GBB_HEADER_H_ */
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