mirror of
https://codeberg.org/libreboot/lbmk.git
synced 2026-03-28 23:19:03 +02:00
710171f92b
mrc.bin is now handled by include/mrc.sh, adapted from now-deleted script/update/blobs/mrc much of the logic has been re-written or adapted for inside script/update/blobs/download mrc links/hashes now defined in config/blobs/sources the new code is simpler (and smaller). in addition, lbmk can now easily handle mrc.bin files for other platforms such as broadwell. watch this space. the full .zip download is now cached, like with other vendor downloads. this means it won't be re-downloaded if it was already downloaded before. Signed-off-by: Leah Rowe <leah@libreboot.org>
83 lines
2.5 KiB
Bash
Executable File
83 lines
2.5 KiB
Bash
Executable File
# SPDX-License-Identifier: GPL-2.0-only
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# Logic based on util/chromeos/crosfirmware.sh in coreboot cfc26ce278.
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# Modifications in this version are Copyright 2021 and 2023 Leah Rowe.
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# Original copyright detailed in repo: https://review.coreboot.org/coreboot/
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extract_mrc()
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{
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[ -z "${MRC_board}" ] && err "extract_mrc $MRC_hash: MRC_board not set"
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[ -z "${CONFIG_MRC_FILE}" ] && \
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err "extract_mrc $MRC_hash: CONFIG_MRC_FILE not set"
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_file="${MRC_url##*/}"
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_file="${_file%.zip}"
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_mrc_destination="${CONFIG_MRC_FILE#../../}"
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mkdirs "${_mrc_destination}" "extract_mrc" || return 0
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(
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cd "${appdir}" || err "extract_mrc: !cd ${appdir}"
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extract_partition ROOT-A "${_file}" root-a.ext2
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extract_shellball root-a.ext2 chromeos-firmwareupdate-${MRC_board}
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extract_coreboot chromeos-firmwareupdate-${MRC_board}
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)
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"${cbfstool}" "${appdir}/"coreboot-*.bin extract -n mrc.bin \
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-f "${_mrc_destination}" -r RO_SECTION || \
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err "extract_mrc: could not fetch mrc.bin"
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}
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extract_partition()
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{
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NAME=${1}
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FILE=${2}
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ROOTFS=${3}
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_bs=1024
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printf "Extracting ROOT-A partition\n"
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ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
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parted "${FILE}" 2>/dev/null | grep "${NAME}" )
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START=$(( $( echo ${ROOTP} | cut -f2 -d\ | tr -d "B" ) ))
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SIZE=$(( $( echo ${ROOTP} | cut -f4 -d\ | tr -d "B" ) ))
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dd if="${FILE}" of="${ROOTFS}" bs=${_bs} skip=$(( ${START} / ${_bs} )) \
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count=$(( ${SIZE} / ${_bs} )) || \
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err "extract_partition: can't extract root file system"
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}
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extract_shellball()
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{
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ROOTFS=${1}
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SHELLBALL=${2}
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printf "Extracting chromeos-firmwareupdate\n"
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printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" \
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| debugfs "${ROOTFS}" || err "extract_shellball: debugfs"
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}
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extract_coreboot()
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{
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_shellball=${1}
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_unpacked=$( mktemp -d )
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printf "Extracting coreboot image\n"
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[ -f "${_shellball}" ] || \
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err "extract_coreboot: shellball missing in google cros image"
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sh "${_shellball}" --unpack "${_unpacked}" || \
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err "extract_coreboot: shellball exits with non-zero status"
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# TODO: audit the f* out of that shellball, for each mrc version.
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# it has to be updated for each mrc update. we should ideally
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# implement the functionality ourselves.
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[ -f "${_unpacked}/VERSION" ] || \
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err "extract_coreboot: VERSION file missing on google coreboot rom"
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_version=$( cat "${_unpacked}/VERSION" | grep BIOS\ version: | \
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cut -f2 -d: | tr -d \ )
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cp "${_unpacked}/bios.bin" "coreboot-${_version}.bin" || \
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err "extract_coreboot: cannot copy google cros rom"
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}
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