8c03b886c4
Instead of having detailed error messages, run most commands through a function that calls err() under fault conditions. Where detail is still required, err() is still called manually. Where it isn't, the error message is simply whatever command was executed to cause the error. This results in a massive sloccount reduction for lbmk; specifically, 178 sloc reduction, or a 8.1% reduction. The total sloccount is now 2022, for shell scripts. Signed-off-by: Leah Rowe <leah@libreboot.org>
77 lines
2.1 KiB
Bash
Executable file
77 lines
2.1 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="${_file%.zip}"
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(
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x_ cd "${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-${MRC_board}
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)
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x_ "${cbfstool}" "${appdir}/"coreboot-*.bin extract -n mrc.bin \
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-f "${_dest}" -r RO_SECTION
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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 ${ROOTP} | cut -f4 -d\ | tr -d "B" ) ))
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x_ dd if="${FILE}" of="${ROOTFS}" bs=${_bs} \
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skip=$(( ${START} / ${_bs} )) count=$(( ${SIZE} / ${_bs} ))
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}
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extract_shellball()
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{
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ROOTFS=${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 "${_shellball}" ] || \
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err "extract_coreboot: shellball missing in google cros image"
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x_ sh "${_shellball}" --unpack "${_unpacked}"
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# TODO: audit the f* out of that shellball, for each mrc version.
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# it has to be updated for each mrc update. we should ideally
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# implement the functionality ourselves.
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[ -f "${_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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x_ cp "${_unpacked}/bios.bin" "coreboot-${_version}.bin"
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}
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