diff options
Diffstat (limited to 'include')
| -rwxr-xr-x | include/blobutil.sh | 5 | ||||
| -rwxr-xr-x | include/mrc.sh | 82 |
2 files changed, 85 insertions, 2 deletions
diff --git a/include/blobutil.sh b/include/blobutil.sh index 182ddf14..b85b8644 100755 --- a/include/blobutil.sh +++ b/include/blobutil.sh @@ -10,7 +10,8 @@ appdir="${blobdir}/app" setvars="EC_url=\"\"" for x in EC_url_bkup EC_hash DL_hash DL_url DL_url_bkup E6400_VGA_DL_hash \ E6400_VGA_DL_url E6400_VGA_DL_url_bkup E6400_VGA_offset E6400_VGA_romname \ - SCH5545EC_DL_url SCH5545EC_DL_url_bkup SCH5545EC_DL_hash; do + SCH5545EC_DL_url SCH5545EC_DL_url_bkup SCH5545EC_DL_hash MRC_url \ + MRC_url_bkup MRC_hash MRC_board; do setvars="${setvars}; ${x}=\"\"" done @@ -40,7 +41,7 @@ for x in _me_destination _gbe_destination _ifd_destination \ CONFIG_KBC1126_FW1_OFFSET CONFIG_KBC1126_FW2 CONFIG_KBC1126_FW2_OFFSET \ CONFIG_VGA_BIOS_FILE CONFIG_VGA_BIOS_ID CONFIG_GBE_BIN_PATH \ CONFIG_INCLUDE_SMSC_SCH5545_EC_FW CONFIG_SMSC_SCH5545_EC_FW_FILE \ - CONFIG_IFD_BIN_PATH; do + CONFIG_IFD_BIN_PATH CONFIG_MRC_FILE; do setvars="${setvars}; ${x}=\"\"" done diff --git a/include/mrc.sh b/include/mrc.sh new file mode 100755 index 00000000..b9345b92 --- /dev/null +++ b/include/mrc.sh @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: GPL-2.0-only + +# Logic based on util/chromeos/crosfirmware.sh in coreboot cfc26ce278. +# Modifications in this version are Copyright 2021 and 2023 Leah Rowe. +# Original copyright detailed in repo: https://review.coreboot.org/coreboot/ + +extract_mrc() +{ + [ -z "${MRC_board}" ] && err "extract_mrc $MRC_hash: MRC_board not set" + [ -z "${CONFIG_MRC_FILE}" ] && \ + err "extract_mrc $MRC_hash: CONFIG_MRC_FILE not set" + + _file="${MRC_url##*/}" + _file="${_file%.zip}" + _mrc_destination="${CONFIG_MRC_FILE#../../}" + mkdirs "${_mrc_destination}" "extract_mrc" || return 0 + + ( + cd "${appdir}" || err "extract_mrc: !cd ${appdir}" + extract_partition ROOT-A "${_file}" root-a.ext2 + extract_shellball root-a.ext2 chromeos-firmwareupdate-${MRC_board} + extract_coreboot chromeos-firmwareupdate-${MRC_board} + ) + + "${cbfstool}" "${appdir}/"coreboot-*.bin extract -n mrc.bin \ + -f "${_mrc_destination}" -r RO_SECTION || \ + err "extract_mrc: could not fetch mrc.bin" +} + +extract_partition() +{ + NAME=${1} + FILE=${2} + ROOTFS=${3} + _bs=1024 + + printf "Extracting ROOT-A partition\n" + ROOTP=$( printf "unit\nB\nprint\nquit\n" | \ + parted "${FILE}" 2>/dev/null | grep "${NAME}" ) + + START=$(( $( echo ${ROOTP} | cut -f2 -d\ | tr -d "B" ) )) + SIZE=$(( $( echo ${ROOTP} | cut -f4 -d\ | tr -d "B" ) )) + + dd if="${FILE}" of="${ROOTFS}" bs=${_bs} skip=$(( ${START} / ${_bs} )) \ + count=$(( ${SIZE} / ${_bs} )) || \ + err "extract_partition: can't extract root file system" +} + +extract_shellball() +{ + ROOTFS=${1} + SHELLBALL=${2} + + printf "Extracting chromeos-firmwareupdate\n" + printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" \ + | debugfs "${ROOTFS}" || err "extract_shellball: debugfs" +} + +extract_coreboot() +{ + _shellball=${1} + _unpacked=$( mktemp -d ) + + printf "Extracting coreboot image\n" + [ -f "${_shellball}" ] || \ + err "extract_coreboot: shellball missing in google cros image" + sh "${_shellball}" --unpack "${_unpacked}" || \ + err "extract_coreboot: shellball exits with non-zero status" + + # TODO: audit the f* out of that shellball, for each mrc version. + # it has to be updated for each mrc update. we should ideally + # implement the functionality ourselves. + + [ -f "${_unpacked}/VERSION" ] || \ + err "extract_coreboot: VERSION file missing on google coreboot rom" + + _version=$( cat "${_unpacked}/VERSION" | grep BIOS\ version: | \ + cut -f2 -d: | tr -d \ ) + + cp "${_unpacked}/bios.bin" "coreboot-${_version}.bin" || \ + err "extract_coreboot: cannot copy google cros rom" +} |