151 lines
3.3 KiB
Bash
Executable File
151 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# script to automate extracting blobs from an existing vendor bios
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# SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
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# SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
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# SPDX-License-Identifier: GPL-3.0-only
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sname=""
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board=""
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vendor_rom=""
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cbdir="coreboot/default"
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cbcfgsdir="resources/coreboot"
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ifdtool="${cbdir}/util/ifdtool/ifdtool"
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mecleaner="me_cleaner/me_cleaner.py"
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me7updateparser="resources/blobs/me7_update_parser.py"
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boarddir=""
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CONFIG_HAVE_MRC=""
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CONFIG_ME_BIN_PATH=""
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CONFIG_GBE_BIN_PATH=""
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CONFIG_IFD_BIN_PATH=""
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_me_destination=""
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_gbe_destination=""
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_ifd_destination=""
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main()
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{
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sname=${0}
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if [ $# -lt 2 ]; then
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fail "Missing arguments (less than two)."
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fi
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board="${1}"
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vendor_rom="${2}"
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boarddir="${cbcfgsdir}/${board}"
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check_board
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build_dependencies
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extract_blobs
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}
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check_board()
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{
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if [ ! -f "${vendor_rom}" ] ; then
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fail "file does not exist: ${vendor_rom}"
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elif [ ! -d "${boarddir}" ]; then
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fail "build/roms ${board}: target not defined"
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elif [ ! -f "${boarddir}/board.cfg" ]; then
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fail "build/roms ${board}: missing board.cfg"
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fi
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}
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build_dependencies()
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{
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if [ ! -d me_cleaner ]; then
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printf "downloading me_cleaner\n"
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./download me_cleaner || fail 'could not download me_cleaner'
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else
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printf "me_cleaner already downloaded. Skipping.\n"
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printf "run ./download me_cleaner to manually overwrite\n"
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fi
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if [ ! -d ${cbdir} ]; then
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printf "downloading coreboot\n"
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./download coreboot default \
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|| fail "could not download coreboot"
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else
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printf "coreboot already downloaded. Skipping.\n"
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printf "run ./download coreboot to manually overwrite\n"
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fi
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if ! [ -f ${ifdtool} ]; then
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printf "building ifdtool from coreboot\n"
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make -C "${ifdtool%/ifdtool}" \
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|| fail "could not build ifdtool"
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fi
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}
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extract_blobs()
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{
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printf "extracting blobs for %s from %s\n" ${board} ${vendor_rom}
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set -- "${boarddir}/config/"*
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. ${1} 2>/dev/null
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. "${boarddir}/board.cfg"
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if [ "$CONFIG_HAVE_MRC" = "y" ]; then
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printf 'haswell board detected, downloading mrc\n'
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./download mrc || fail "could not download mrc"
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fi
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_me_destination=${CONFIG_ME_BIN_PATH#../../}
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_gbe_destination=${CONFIG_GBE_BIN_PATH#../../}
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_ifd_destination=${CONFIG_IFD_BIN_PATH#../../}
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extract_blob_intel_me
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extract_blob_intel_gbe_nvm
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# Cleans up other files extracted with ifdtool
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rm -f flashregion*.bin 2> /dev/null
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if [ -f ${_ifd_destination} ]; then
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printf "gbe, ifd, and me extracted to %s\n" \
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${_me_destination%/*}
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else
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printf "WARNING: Intel firmware descriptor could not "
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printf "be extracted with modified me\n"
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fi
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}
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extract_blob_intel_me()
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{
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printf "extracting clean ime and modified ifd\n"
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${mecleaner} -D ${_ifd_destination} \
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-M ${_me_destination} ${vendor_rom} -t -r -S \
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|| ${me7updateparser} \
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-O ${_me_destination} ${vendor_rom} \
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|| fail \
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"me_cleaner failed to extract blobs from rom"
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}
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extract_blob_intel_gbe_nvm()
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{
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printf "extracting gigabit ethernet firmware"
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./${ifdtool} -x ${vendor_rom}
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mv flashregion*gbe.bin ${_gbe_destination} \
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|| fail 'could not extract gbe'
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}
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fail()
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{
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print_help
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printf "\n%s: ERROR: %s\n" ${sname} $@
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exit 1
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}
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print_help()
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{
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printf "Usage: ./blobutil extract {boardname} {path/to/vendor_rom}\n"
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printf "Example: ./blobutil extract x230 12mb_flash.bin\n"
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printf "\nYou need to specify exactly 2 arguments\n"
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}
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main $@
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