From ac19acbe3a5bfe5e7fdbd2c242f445efe93f0e2e Mon Sep 17 00:00:00 2001 From: Hung-Te Lin Date: Wed, 27 Jun 2012 16:18:38 +0800 Subject: (factory-2460.B)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 Reviewed-on: https://gerrit.chromium.org/gerrit/26224 Reviewed-by: Bill Richardson Commit-Ready: Hung-Te Lin Tested-by: Hung-Te Lin (cherry picked from commit 61603e2d6128d6fadd2fd8b1f16d60c5df8c00bd) Change-Id: Ib63a813e35eb7b254411e3d64f4c71f41e51b817 Reviewed-on: https://gerrit.chromium.org/gerrit/27435 Reviewed-by: Jay Kim Tested-by: Jay Kim --- scripts/image_signing/set_gbb_flags.sh | 76 ++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100755 scripts/image_signing/set_gbb_flags.sh 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 -- "$FLAGS_ARGV" + +main "$@" -- cgit v1.2.1