diff options
author | Hung-Te Lin <hungte@chromium.org> | 2012-06-27 16:18:38 +0800 |
---|---|---|
committer | Gerrit <chrome-bot@google.com> | 2012-06-27 18:44:28 -0700 |
commit | 61603e2d6128d6fadd2fd8b1f16d60c5df8c00bd (patch) | |
tree | ff6dac8e70c6a07a3630a897f94914d596bb6b0b | |
parent | 17b8224ea582b2ba90b30a3e8e2d913e49c7818a (diff) | |
download | vboot-61603e2d6128d6fadd2fd8b1f16d60c5df8c00bd.tar.gz |
vboot_reference: add "set_gbb_flags" script.
A simple script to help setting GBB flags on-the-fly, with help information for
flag value meanings.
BUG=chrome-os-partner:10389
TEST=./set_gbb_flags.sh 0x20
./set_gbb_flags.sh 0x0
Change-Id: Ic624f76c0897a1cbda876f3073b36f7c6425b5d4
Reviewed-on: https://gerrit.chromium.org/gerrit/26224
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Commit-Ready: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
-rwxr-xr-x | scripts/image_signing/set_gbb_flags.sh | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/scripts/image_signing/set_gbb_flags.sh b/scripts/image_signing/set_gbb_flags.sh new file mode 100755 index 00000000..bb23149a --- /dev/null +++ b/scripts/image_signing/set_gbb_flags.sh @@ -0,0 +1,76 @@ +#!/bin/sh +# +# Copyright (c) 2012 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 can change GBB flags in system live firmware or a given image +# file. + +SCRIPT_BASE="$(dirname "$0")" +. "$SCRIPT_BASE/common_minimal.sh" +load_shflags || exit 1 + +# DEFINE_string name default_value description flag +DEFINE_string file "" "Path to firmware image. Default to system firmware." "f" + +# Globals +# ---------------------------------------------------------------------------- +set -e + +# Values from vboot_reference/firmware/include/gbb_header.h +GBBFLAGS_DESCRIPTION=" + Defined flags (some values may be not supported by all systems): + + 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 + + To get a developer-friendly device, try 0x11 (short_delay + boot_usb). + For factory-related tests (always DEV), try 0x39. +" + +FLAGS_HELP="Changes ChromeOS Firmware GBB Flags value. + + Usage: $0 [option_flags] GBB_FLAGS_VALUE + $GBBFLAGS_DESCRIPTION" + +FLASHROM_COMMON_OPT="-p internal:bus=spi" +FLASHROM_READ_OPT="$FLASHROM_COMMON_OPT -i GBB -r" +FLASHROM_WRITE_OPT="$FLASHROM_COMMON_OPT -i GBB --fast-verify -w" + +# Main +# ---------------------------------------------------------------------------- +main() { + if [ "$#" != "1" ]; then + flags_help + exit 1 + fi + + local value="$(($1))" + local image_file="$FLAGS_file" + + if [ -z "$FLAGS_file" ]; then + image_file="$(make_temp_file)" + flashrom $FLASHROM_READ_OPT "$image_file" + fi + + # Process file + local old_value="$(gbb_utility -g --flags "$image_file")" + printf "Setting GBB flags from %s to 0x%x.." "$old_value" "$value" >&2 + gbb_utility -s --flags="$value" "$image_file" + + if [ -z "$FLAGS_file" ]; then + flashrom $FLASHROM_WRITE_OPT "$image_file" + fi +} + +# Parse command line +FLAGS "$@" || exit 1 +ORIGINAL_PARAMS="$@" +eval set -- "$FLAGS_ARGV" + +main "$@" |