blob: 9a8d1cb4ce01c8472bb2a6a8362c6db17f554712 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#!/bin/sh
#
# Copyright 2017 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.
#
# This script provides tools to read or change GBB flags on a live system.
SCRIPT_BASE="$(dirname "$0")"
. "${SCRIPT_BASE}/common_minimal.sh"
load_shflags || exit 1
# Globals
# ----------------------------------------------------------------------------
# Values from vboot_reference/firmware/include/gbb_header.h
GBBFLAGS_DESCRIPTION_PREFIX="
Defined flags (some values may be not supported by all systems):
"
GBBFLAGS_LIST="
GBB_FLAG_DEV_SCREEN_SHORT_DELAY 0x00000001
GBB_FLAG_LOAD_OPTION_ROMS 0x00000002
GBB_FLAG_ENABLE_ALTERNATE_OS 0x00000004
GBB_FLAG_FORCE_DEV_SWITCH_ON 0x00000008
GBB_FLAG_FORCE_DEV_BOOT_USB 0x00000010
GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK 0x00000020
GBB_FLAG_ENTER_TRIGGERS_TONORM 0x00000040
GBB_FLAG_FORCE_DEV_BOOT_LEGACY 0x00000080
GBB_FLAG_FAFT_KEY_OVERIDE 0x00000100
GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC 0x00000200
GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY 0x00000400
GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC 0x00000800
GBB_FLAG_DISABLE_LID_SHUTDOWN 0x00001000
GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP 0x00002000
GBB_FLAG_ENABLE_SERIAL 0x00004000
"
GBBFLAGS_DESCRIPTION_SUFFIX="
To get a developer-friendly device, try 0x11 (short_delay + boot_usb).
For factory-related tests (always DEV), try 0x39.
For early development (disable EC/PD software sync), try 0xa39.
"
GBBFLAGS_DESCRIPTION="${GBBFLAGS_DESCRIPTION_PREFIX}${GBBFLAGS_LIST}"
GBBFLAGS_DESCRIPTION="${GBBFLAGS_DESCRIPTION}${GBBFLAGS_DESCRIPTION_SUFFIX}"
FLAGS_HELP="Manages Chrome OS Firmware GBB Flags value.
Usage: $0 [option_flags] GBB_FLAGS_VALUE
${GBBFLAGS_DESCRIPTION}"
flashrom_read() {
flashrom -p host -i GBB -r "$@"
}
flashrom_write() {
flashrom -p host -i GBB --fast-verify -w "$@"
}
|
