diff options
Diffstat (limited to 'firmware/include/gbb_header.h')
| -rw-r--r-- | firmware/include/gbb_header.h | 72 |
1 files changed, 39 insertions, 33 deletions
diff --git a/firmware/include/gbb_header.h b/firmware/include/gbb_header.h index f490bb01..5ab5121b 100644 --- a/firmware/include/gbb_header.h +++ b/firmware/include/gbb_header.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved. +/* Copyright (c) 2013 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. * @@ -15,17 +15,18 @@ #define GBB_SIGNATURE "$GBB" #define GBB_SIGNATURE_SIZE 4 -/* GBB version constants. +/* + * GBB version constants. * - * If the major version is different than the reader can handle, it - * shouldn't attempt to parse the GBB. + * If the major version is different than the reader can handle, it shouldn't + * attempt to parse the GBB. * - * If the minor version is different, the reader can still parse it. - * If the minor version is greater than expected, new fields were - * added in a way which does not interfere with the old fields. If - * it's less than expected, some of the fields expected by the reader - * aren't initialized, and the reader should return default values for - * those fields. */ + * If the minor version is different, the reader can still parse it. If the + * minor version is greater than expected, new fields were added in a way which + * does not interfere with the old fields. If it's less than expected, some of + * the fields expected by the reader aren't initialized, and the reader should + * return default values for those fields. + */ #define GBB_MAJOR_VER 1 #define GBB_MINOR_VER 1 @@ -35,13 +36,17 @@ /* Flags for .flags field */ /* Reduce the dev screen delay to 2 sec from 30 sec to speedup factory. */ #define GBB_FLAG_DEV_SCREEN_SHORT_DELAY 0x00000001 -/* BIOS should load option ROMs from arbitrary PCI devices. We'll never enable - * this ourselves because it executes non-verified code, but if a customer wants - * to void their warranty and set this flag in the read-only flash, they should - * be able to do so. */ +/* + * BIOS should load option ROMs from arbitrary PCI devices. We'll never enable + * this ourselves because it executes non-verified code, but if a customer + * wants to void their warranty and set this flag in the read-only flash, they + * should be able to do so. + */ #define GBB_FLAG_LOAD_OPTION_ROMS 0x00000002 -/* The factory flow may need the BIOS to boot a non-ChromeOS kernel if the - * dev-switch is on. This flag allows that. */ +/* + * The factory flow may need the BIOS to boot a non-ChromeOS kernel if the + * dev-switch is on. This flag allows that. + */ #define GBB_FLAG_ENABLE_ALTERNATE_OS 0x00000004 /* Force dev switch on, regardless of physical/keyboard dev switch position. */ #define GBB_FLAG_FORCE_DEV_SWITCH_ON 0x00000008 @@ -60,24 +65,25 @@ extern "C" { #endif /* __cplusplus */ -typedef struct GoogleBinaryBlockHeader { - /* Fields present in version 1.0 */ - uint8_t signature[GBB_SIGNATURE_SIZE]; /* GBB_SIGNATURE "$GBB" */ - uint16_t major_version; /* See GBB_MAJOR_VER */ - uint16_t minor_version; /* See GBB_MINOR_VER */ - uint32_t header_size; /* size of GBB header in bytes */ - uint32_t flags; /* Flags (see GBB_FLAG_*), should be 0 for 1.0. */ - - uint32_t hwid_offset; /* HWID offset from start of header */ - uint32_t hwid_size; /* HWID size in bytes */ - uint32_t rootkey_offset; /* Root Key offset from start of header */ - uint32_t rootkey_size; /* Root Key size in bytes */ - uint32_t bmpfv_offset; /* BMP FV offset from start of header */ - uint32_t bmpfv_size; /* BMP FV size in bytes */ - uint32_t recovery_key_offset; /* Recovery Key offset from start of header */ - uint32_t recovery_key_size; /* Recovery Key size in bytes */ +typedef struct GoogleBinaryBlockHeader +{ + /* Fields present in version 1.0 */ + uint8_t signature[GBB_SIGNATURE_SIZE]; /* GBB_SIGNATURE "$GBB" */ + uint16_t major_version; /* See GBB_MAJOR_VER */ + uint16_t minor_version; /* See GBB_MINOR_VER */ + uint32_t header_size; /* size of GBB header in bytes */ + uint32_t flags; /* Flags (see GBB_FLAG_*), should be 0 for 1.0. */ + /* Offsets (from start of header) and sizes (in bytes) of components */ + uint32_t hwid_offset; /* HWID */ + uint32_t hwid_size; + uint32_t rootkey_offset; /* Root key */ + uint32_t rootkey_size; + uint32_t bmpfv_offset; /* BMP FV */ + uint32_t bmpfv_size; + uint32_t recovery_key_offset; /* Recovery key */ + uint32_t recovery_key_size; - uint8_t pad[80]; /* To match GBB_HEADER_SIZE. Initialize to 0. */ + uint8_t pad[80]; /* To match GBB_HEADER_SIZE. Initialize to 0. */ } __attribute__((packed)) GoogleBinaryBlockHeader; #ifdef __cplusplus |