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#!/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 can change GBB flags in system live firmware or a given image
# file.
SCRIPT_BASE="$(dirname "$0")"
. "${SCRIPT_BASE}/gbb_flags_common.sh"
# DEFINE_string name default_value description flag
DEFINE_string file "" "Path to firmware image. Default to system firmware." "f"
DEFINE_boolean explicit ${FLAGS_FALSE} "Print list of what flags are set." "e"
set -e
main() {
if [ $# -ne 0 ]; then
flags_help
exit 1
fi
local image_file="${FLAGS_file}"
if [ -z "${FLAGS_file}" ]; then
image_file="$(make_temp_file)"
flashrom_read "${image_file}"
fi
# Process file.
# Keep 'local' declaration split from assignment so return code is checked.
local gbb_flags
gbb_flags="$(futility gbb -g --flags "${image_file}")"
local raw_gbb_flags="$(echo "${gbb_flags}" | egrep -o "0x[0-9]+")"
printf "Chrome OS GBB set ${gbb_flags}\n"
if [ "${FLAGS_explicit}" = "${FLAGS_TRUE}" ]; then
printf "Chrome OS GBB set flags listed:\n"
echo "${GBBFLAGS_LIST}" | while read -r flag code; do
if [ $((code & raw_gbb_flags)) -ne 0 ]; then
printf "${flag}\n"
fi
done
fi
}
# Parse command line.
FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"
main "$@"
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