mirror of
https://github.com/Telecominfraproject/OpenCellular.git
synced 2026-01-09 17:11:42 +00:00
vboot: introduce get_gbb_flags.sh
introduce get_gbb_flags.sh command to make automatic annotation of power measurements easier. Also, fix issue where declaring local variables on same line as executing a command would obfuscate error code, thus not triggering set -c and continuing execution. https://github.com/koalaman/shellcheck/wiki/SC2155 Usage: $ /usr/share/vboot/bin/get_gbb_flags.sh [...] ChromeOS GBB set flags: 0x00000329. $ /usr/share/vboot/bin/get_gbb_flags.sh -e [...] ChromeOS GBB set flags: 0x00000329. ChromeOS GBB set flags listed: GBB_FLAG_DEV_SCREEN_SHORT_DELAY GBB_FLAG_FORCE_DEV_SWITCH_ON GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK GBB_FLAG_FAFT_KEY_OVERIDE GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC BUG=chromium:760267 BRANCH=none TEST=manual emerge-soraka vboot_reference cros deploy <IP> vboot_reference (on DUT) /usr/share/vboot/bin/get_gbb_flags.sh -e <same output as above> Change-Id: Idb3b993706c03e7f2831eed2cef12a04b9469fea
This commit is contained in:
Ruben Rodriguez Buchillon
committed by
chrome-bot
chrome-bot
parent
e109b1e8d1
commit
1c6897da76
4
Makefile
4
Makefile
@@ -644,7 +644,9 @@ SIGNING_SCRIPTS_DEV = \
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scripts/image_signing/resign_firmwarefd.sh \
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scripts/image_signing/make_dev_firmware.sh \
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scripts/image_signing/make_dev_ssd.sh \
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scripts/image_signing/set_gbb_flags.sh
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scripts/image_signing/gbb_flags_common.sh \
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scripts/image_signing/set_gbb_flags.sh \
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scripts/image_signing/get_gbb_flags.sh
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# Installed, but not made executable.
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SIGNING_COMMON = scripts/image_signing/common_minimal.sh
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58
scripts/image_signing/gbb_flags_common.sh
Normal file
58
scripts/image_signing/gbb_flags_common.sh
Normal file
@@ -0,0 +1,58 @@
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#!/bin/sh
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#
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# Copyright 2017 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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# This script provides tools to read or change GBB flags on a live system.
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SCRIPT_BASE="$(dirname "$0")"
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. "${SCRIPT_BASE}/common_minimal.sh"
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load_shflags || exit 1
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# Globals
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# ----------------------------------------------------------------------------
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# Values from vboot_reference/firmware/include/gbb_header.h
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GBBFLAGS_DESCRIPTION_PREFIX="
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Defined flags (some values may be not supported by all systems):
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"
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GBBFLAGS_LIST="
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GBB_FLAG_DEV_SCREEN_SHORT_DELAY 0x00000001
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GBB_FLAG_LOAD_OPTION_ROMS 0x00000002
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GBB_FLAG_ENABLE_ALTERNATE_OS 0x00000004
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GBB_FLAG_FORCE_DEV_SWITCH_ON 0x00000008
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GBB_FLAG_FORCE_DEV_BOOT_USB 0x00000010
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GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK 0x00000020
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GBB_FLAG_ENTER_TRIGGERS_TONORM 0x00000040
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GBB_FLAG_FORCE_DEV_BOOT_LEGACY 0x00000080
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GBB_FLAG_FAFT_KEY_OVERIDE 0x00000100
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GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC 0x00000200
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GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY 0x00000400
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GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC 0x00000800
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GBB_FLAG_DISABLE_LID_SHUTDOWN 0x00001000
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GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP 0x00002000
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GBB_FLAG_ENABLE_SERIAL 0x00004000
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"
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GBBFLAGS_DESCRIPTION_SUFFIX="
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To get a developer-friendly device, try 0x11 (short_delay + boot_usb).
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For factory-related tests (always DEV), try 0x39.
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For early development (disable EC/PD software sync), try 0xa39.
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"
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GBBFLAGS_DESCRIPTION="${GBBFLAGS_DESCRIPTION_PREFIX}${GBBFLAGS_LIST}"
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GBBFLAGS_DESCRIPTION="${GBBFLAGS_DESCRIPTION}${GBBFLAGS_DESCRIPTION_SUFFIX}"
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FLAGS_HELP="Manages Chrome OS Firmware GBB Flags value.
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Usage: $0 [option_flags] GBB_FLAGS_VALUE
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${GBBFLAGS_DESCRIPTION}"
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flashrom_read() {
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flashrom -p host -i GBB -r "$@"
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}
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flashrom_write() {
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flashrom -p host -i GBB --fast-verify -w "$@"
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}
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54
scripts/image_signing/get_gbb_flags.sh
Executable file
54
scripts/image_signing/get_gbb_flags.sh
Executable file
@@ -0,0 +1,54 @@
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#!/bin/sh
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#
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# Copyright 2017 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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# This script can change GBB flags in system live firmware or a given image
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# file.
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SCRIPT_BASE="$(dirname "$0")"
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. "${SCRIPT_BASE}/gbb_flags_common.sh"
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# DEFINE_string name default_value description flag
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DEFINE_string file "" "Path to firmware image. Default to system firmware." "f"
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DEFINE_boolean explicit ${FLAGS_FALSE} "Print list of what flags are set." "e"
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set -e
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main() {
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if [ $# -ne 0 ]; then
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flags_help
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exit 1
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fi
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local image_file="${FLAGS_file}"
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if [ -z "${FLAGS_file}" ]; then
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image_file="$(make_temp_file)"
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flashrom_read "${image_file}"
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fi
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# Process file.
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# Keep 'local' declaration split from assignment so return code is checked.
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local gbb_flags
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gbb_flags="$(futility gbb -g --flags "${image_file}")"
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local raw_gbb_flags="$(echo "${gbb_flags}" | egrep -o "0x[0-9]+")"
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printf "Chrome OS GBB set ${gbb_flags}\n"
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if [ "${FLAGS_explicit}" = "${FLAGS_TRUE}" ]; then
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printf "Chrome OS GBB set flags listed:\n"
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echo "${GBBFLAGS_LIST}" | while read -r flag code; do
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if [ $((code & raw_gbb_flags)) -ne 0 ]; then
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printf "${flag}\n"
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fi
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done
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fi
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}
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# Parse command line.
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FLAGS "$@" || exit 1
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eval set -- "${FLAGS_ARGV}"
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main "$@"
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@@ -8,51 +8,14 @@
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# file.
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SCRIPT_BASE="$(dirname "$0")"
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. "$SCRIPT_BASE/common_minimal.sh"
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load_shflags || exit 1
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. "${SCRIPT_BASE}/gbb_flags_common.sh"
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# DEFINE_string name default_value description flag
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DEFINE_string file "" "Path to firmware image. Default to system firmware." "f"
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DEFINE_boolean check_wp $FLAGS_TRUE "Check write protection states first." ""
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DEFINE_boolean check_wp ${FLAGS_TRUE} "Check write protection states first." ""
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# Globals
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# ----------------------------------------------------------------------------
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set -e
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# Values from vboot_reference/firmware/include/gbb_header.h
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GBBFLAGS_DESCRIPTION="
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Defined flags (some values may be not supported by all systems):
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GBB_FLAG_DEV_SCREEN_SHORT_DELAY 0x00000001
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GBB_FLAG_LOAD_OPTION_ROMS 0x00000002
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GBB_FLAG_ENABLE_ALTERNATE_OS 0x00000004
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GBB_FLAG_FORCE_DEV_SWITCH_ON 0x00000008
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GBB_FLAG_FORCE_DEV_BOOT_USB 0x00000010
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GBB_FLAG_DISABLE_FW_ROLLBACK_CHECK 0x00000020
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GBB_FLAG_ENTER_TRIGGERS_TONORM 0x00000040
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GBB_FLAG_FORCE_DEV_BOOT_LEGACY 0x00000080
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GBB_FLAG_FAFT_KEY_OVERIDE 0x00000100
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GBB_FLAG_DISABLE_EC_SOFTWARE_SYNC 0x00000200
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GBB_FLAG_DEFAULT_DEV_BOOT_LEGACY 0x00000400
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GBB_FLAG_DISABLE_PD_SOFTWARE_SYNC 0x00000800
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GBB_FLAG_DISABLE_LID_SHUTDOWN 0x00001000
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GBB_FLAG_FORCE_DEV_BOOT_FASTBOOT_FULL_CAP 0x00002000
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GBB_FLAG_ENABLE_SERIAL 0x00004000
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To get a developer-friendly device, try 0x11 (short_delay + boot_usb).
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For factory-related tests (always DEV), try 0x39.
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For early development (disable EC/PD software sync), try 0xa39.
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"
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FLAGS_HELP="Changes ChromeOS Firmware GBB Flags value.
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Usage: $0 [option_flags] GBB_FLAGS_VALUE
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$GBBFLAGS_DESCRIPTION"
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FLASHROM_COMMON_OPT="-p host"
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FLASHROM_READ_OPT="$FLASHROM_COMMON_OPT -i GBB -r"
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FLASHROM_WRITE_OPT="$FLASHROM_COMMON_OPT -i GBB --fast-verify -w"
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# Check write protection
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# ----------------------------------------------------------------------------
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check_write_protection() {
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@@ -60,17 +23,18 @@ check_write_protection() {
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if ! crossystem "wpsw_boot?0"; then
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hw_wp="on"
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fi
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local wp_states="$(flashrom $FLASHROM_COMMON_OPT --wp-status 2>/dev/null \
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| grep WP)"
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local wp_disabled="$(echo "$wp_states" | grep "WP:.*is disabled.")"
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local wp_zero_len="$(echo "$wp_states" | grep "WP:.*, len=0x00000000")"
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if [ -z "$wp_disabled" -a -z "$wp_zero_len" ]; then
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# Keep 'local' declaration split from assignment so return code is checked.
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local wp_states
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wp_states="$(flashrom -p host --wp-status 2>/dev/null | grep WP)"
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local wp_disabled="$(echo "${wp_states}" | grep "WP:.*is disabled.")"
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local wp_zero_len="$(echo "${wp_states}" | grep "WP:.*, len=0x00000000")"
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if [ -z "${wp_disabled}" -a -z "${wp_zero_len}" ]; then
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sw_wp="on"
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fi
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if [ -n "$hw_wp" -a -n "$sw_wp" ]; then
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return $FLAGS_FALSE
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if [ -n "${hw_wp}" -a -n "${sw_wp}" ]; then
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return ${FLAGS_FALSE}
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fi
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return $FLAGS_TRUE
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return ${FLAGS_TRUE}
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}
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# Main
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@@ -82,20 +46,22 @@ main() {
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fi
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local value="$(($1))"
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local image_file="$FLAGS_file"
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local image_file="${FLAGS_file}"
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if [ -z "$FLAGS_file" ]; then
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if [ -z "${FLAGS_file}" ]; then
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image_file="$(make_temp_file)"
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flashrom $FLASHROM_READ_OPT "$image_file"
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flashrom_read "${image_file}"
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fi
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# Process file
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local old_value="$(futility gbb -g --flags "$image_file")"
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printf "Setting GBB flags from %s to 0x%x.." "$old_value" "$value" >&2
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futility gbb -s --flags="$value" "$image_file"
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# Keep 'local' declaration split from assignment so return code is checked.
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local old_value
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old_value="$(futility gbb -g --flags "${image_file}")"
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printf "Setting GBB flags from %s to 0x%x.." "${old_value}" "${value}"
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futility gbb -s --flags="${value}" "${image_file}"
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if [ -z "$FLAGS_file" ]; then
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if [ "$FLAGS_check_wp" = "$FLAGS_TRUE" ]; then
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if [ -z "${FLAGS_file}" ]; then
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if [ "${FLAGS_check_wp}" = "${FLAGS_TRUE}" ]; then
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if ! check_write_protection; then
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echo ""
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echo "WARNING: System GBB Flags are NOT changed!!!"
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@@ -103,13 +69,12 @@ main() {
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exit 1
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fi
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fi
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flashrom $FLASHROM_WRITE_OPT "$image_file"
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flashrom_write "$image_file"
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fi
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}
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# Parse command line
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FLAGS "$@" || exit 1
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ORIGINAL_PARAMS="$@"
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eval set -- "$FLAGS_ARGV"
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main "$@"
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