43 lines
1.4 KiB
Bash
Executable File
43 lines
1.4 KiB
Bash
Executable File
# SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
# Logic based on util/chromeos/crosfirmware.sh in coreboot cfc26ce278.
|
|
# Modifications in this version are Copyright 2021 and 2023 Leah Rowe.
|
|
# Original copyright detailed in repo: https://review.coreboot.org/coreboot/
|
|
|
|
eval "$(setvars "" MRC_url MRC_url_bkup MRC_hash MRC_board SHELLBALL)"
|
|
|
|
extract_mrc()
|
|
{
|
|
[ -z "$MRC_board" ] && err "extract_mrc $MRC_hash: MRC_board not set"
|
|
[ -z "${CONFIG_MRC_FILE}" ] && \
|
|
err "extract_mrc $MRC_hash: CONFIG_MRC_FILE not set"
|
|
|
|
SHELLBALL="chromeos-firmwareupdate-${MRC_board}"
|
|
|
|
(
|
|
x_ cd "${appdir}"
|
|
extract_partition "${MRC_url##*/}"
|
|
extract_archive "${SHELLBALL}" .
|
|
) || err "mrc download/extract failure"
|
|
|
|
"${cbfstool}" "${appdir}/"bios.bin extract -n mrc.bin \
|
|
-f "$_dest" -r RO_SECTION || err "extract_mrc: cbfstool $_dest"
|
|
}
|
|
|
|
extract_partition()
|
|
{
|
|
printf "Extracting ROOT-A partition\n"
|
|
ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
|
|
parted "${1%.zip}" 2>/dev/null | grep "ROOT-A" )
|
|
|
|
START=$(( $( echo ${ROOTP} | cut -f2 -d\ | tr -d "B" ) ))
|
|
SIZE=$(( $( echo ${ROOTP} | cut -f4 -d\ | tr -d "B" ) ))
|
|
|
|
dd if="${1%.zip}" of="root-a.ext2" bs=1024 \
|
|
skip=$(( ${START} / 1024 )) count=$(( ${SIZE} / 1024 )) || \
|
|
err "extract_partition, dd ${1%.zip}, root-a.ext2"
|
|
|
|
printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" \
|
|
| debugfs "root-a.ext2" || err "can't extract shellball"
|
|
}
|