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277dc5274c
In order to disable PD software sync but still do EC software sync it is useful to have a separate GBB flag for it. This will allow me to release a Samus P2B firmware image that will update the EC but not the PD, since the PD FW that comes on P2B devices cannot be updated with software sync. BUG=chrome-os-partner:30079 BRANCH=None TEST=flash BIOS with updated EC+PD: 1) no GBB flags to override behavior updates both EC and PD 2) GBB flag to disable EC software sync disables both EC and PD update 3) GBB flag to disable PD software sync disables only PD update Change-Id: I49ffb59238bee4a2dd66b24f2516e3ce46ea06cd Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/211910 Reviewed-by: Bill Richardson <wfrichar@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org>
98 lines
3.6 KiB
C
98 lines
3.6 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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/* Disable EC software sync */
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#define GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC 0x00000200
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/* Default to booting legacy OS when dev screen times out */
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#define GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY 0x00000400
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/* Disable PD software sync */
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#define GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC 0x00000800
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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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