90 lines
2.5 KiB
Plaintext
90 lines
2.5 KiB
Plaintext
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#!/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-License-Identifier: GPL-3.0-only
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board="${1}"
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vendor_rom="${2}"
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Print_help(){
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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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Build_deps(){
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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
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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 coreboot/default ]; then
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printf "downloading coreboot\n"
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./download coreboot default
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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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printf "building ifdtool from coreboot\n"
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( cd coreboot/default/util/ifdtool && make )
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}
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Error_out(){
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printf "failed to extract ${1}\nmake sure that your rom dump is valid\n"
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exit 1
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}
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Extract_blobs(){
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# TODO: find a better way to know which coreboot config to source
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set -- "resources/coreboot/${board}/config/*"
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. ${1} 2>/dev/null
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. "resources/coreboot/${board}/board.cfg"
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if [ "$CONFIG_HAVE_MRC" = "y" ]; then
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printf 'haswell board detected, downloading mrc\n'
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./download mrc
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fi
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_me_destination=${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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printf "extracting clean ime and modified ifd\n"
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./me_cleaner/me_cleaner.py -D ${_ifd_destination} -M ${_me_destination} ${vendor_rom} -t -r -S || Error_out me
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printf "extracting gigabit ethernet firmware"
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./coreboot/default/util/ifdtool/ifdtool -x ${vendor_rom}
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mv flashregion*gbe.bin ${_gbe_destination} || Error_out gbe
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# Cleans up other files extracted with ifdtool
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rm flashregion*.bin 2> /dev/null
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printf "gbe, ifd, and me extracted to ${_me_destination%/*}\n"
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}
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if [ ! -f "${vendor_rom}" ] ; then
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Print_help
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exit 1
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fi
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if [ ! -d "resources/coreboot/${board}" ]; then
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Print_help
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printf "build/roms: Target %s does not exist in the %s build system. Skipping build.\n" "${projectname}" "${board}"
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exit 1
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fi
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if [ ! -f "resources/coreboot/${board}/board.cfg" ]; then
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Print_help
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printf "build/roms: Target %s does not have a board.cfg. Skipping build.\n" "${board}"
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exit 1
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fi
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printf "extracting blobs for ${board} from ${vendor_rom}\n"
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Build_deps
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Extract_blobs
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