#!/usr/bin/env bash # script to automate extracting blobs from an existing vendor bios # SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com> # SPDX-License-Identifier: GPL-3.0-only board="${1}" vendor_rom="${2}" Print_help(){ printf "Usage: ./blobutil extract {boardname} {path/to/vendor_rom}\n" printf "Example: ./blobutil extract x230 12mb_flash.bin\n" printf "\nYou need to specify exactly 2 arguments\n" } Build_deps(){ if [ ! -d me_cleaner ]; then printf "downloading me_cleaner\n" ./download me_cleaner else printf "me_cleaner already downloaded. Skipping.\n" printf "run ./download me_cleaner to manually overwrite\n" fi if [ ! -d coreboot/default ]; then printf "downloading coreboot\n" ./download coreboot default else printf "coreboot already downloaded. Skipping.\n" printf "run ./download coreboot to manually overwrite\n" fi printf "building ifdtool from coreboot\n" ( cd coreboot/default/util/ifdtool && make ) } Error_out(){ printf "failed to extract ${1}\nmake sure that your rom dump is valid\n" exit 1 } Extract_blobs(){ # TODO: find a better way to know which coreboot config to source set -- "resources/coreboot/${board}/config/*" . ${1} 2>/dev/null . "resources/coreboot/${board}/board.cfg" if [ "$CONFIG_HAVE_MRC" = "y" ]; then printf 'haswell board detected, downloading mrc\n' ./download mrc fi _me_destination=${CONFIG_ME_BIN_PATH#../../} _gbe_destination=${CONFIG_GBE_BIN_PATH#../../} _ifd_destination=${CONFIG_IFD_BIN_PATH#../../} printf "extracting clean ime and modified ifd\n" ./me_cleaner/me_cleaner.py -D ${_ifd_destination} -M ${_me_destination} ${vendor_rom} -t -r -S || Error_out me printf "extracting gigabit ethernet firmware" ./coreboot/default/util/ifdtool/ifdtool -x ${vendor_rom} mv flashregion*gbe.bin ${_gbe_destination} || Error_out gbe # Cleans up other files extracted with ifdtool rm flashregion*.bin 2> /dev/null printf "gbe, ifd, and me extracted to ${_me_destination%/*}\n" } if [ ! -f "${vendor_rom}" ] ; then Print_help exit 1 fi if [ ! -d "resources/coreboot/${board}" ]; then Print_help printf "build/roms: Target %s does not exist in the %s build system. Skipping build.\n" "${projectname}" "${board}" exit 1 fi if [ ! -f "resources/coreboot/${board}/board.cfg" ]; then Print_help printf "build/roms: Target %s does not have a board.cfg. Skipping build.\n" "${board}" exit 1 fi printf "extracting blobs for ${board} from ${vendor_rom}\n" Build_deps Extract_blobs