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mrc.sh: general code cleanup 

Signed-off-by: Leah Rowe <leah@libreboot.org>
9020vga
Leah Rowe 2023-12-22 06:34:14 +00:00
parent 12e644b303
commit 8a87572227
1 changed files with 8 additions and 20 deletions
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28
include/mrc.sh
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@ -4,7 +4,7 @@
# Modifications in this version are Copyright 2021 and 2023 Leah Rowe. # Modifications in this version are Copyright 2021 and 2023 Leah Rowe.
# Original copyright detailed in repo: https://review.coreboot.org/coreboot/ # Original copyright detailed in repo: https://review.coreboot.org/coreboot/
eval "$(setvars "" MRC_url MRC_url_bkup MRC_hash MRC_board ROOTFS SHELLBALL)" eval "$(setvars "" MRC_url MRC_url_bkup MRC_hash MRC_board SHELLBALL)"
extract_mrc() extract_mrc()
{ {
@ -12,13 +12,13 @@ extract_mrc()
[ -z "${CONFIG_MRC_FILE}" ] && \ [ -z "${CONFIG_MRC_FILE}" ] && \
err "extract_mrc $MRC_hash: CONFIG_MRC_FILE not set" err "extract_mrc $MRC_hash: CONFIG_MRC_FILE not set"
ROOTFS="root-a.ext2"
SHELLBALL="chromeos-firmwareupdate-${MRC_board}" SHELLBALL="chromeos-firmwareupdate-${MRC_board}"
( (
x_ cd "${appdir}" x_ cd "${appdir}"
extract_partition extract_partition "${MRC_url##*/}"
extract_shellball printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" \
| debugfs "root-a.ext2" || err "extract_mrc: can't extract shellball"
extract_archive "${SHELLBALL}" . extract_archive "${SHELLBALL}" .
) || err "mrc download/extract failure" ) || err "mrc download/extract failure"
@ -28,26 +28,14 @@ extract_mrc()
extract_partition() extract_partition()
{ {
NAME="ROOT-A"
FILE="${MRC_url##*/}"
FILE="${FILE%.zip}"
_bs=1024
printf "Extracting ROOT-A partition\n" printf "Extracting ROOT-A partition\n"
ROOTP=$( printf "unit\nB\nprint\nquit\n" | \ ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
parted "${FILE}" 2>/dev/null | grep "${NAME}" ) parted "${1%.zip}" 2>/dev/null | grep "ROOT-A" )
START=$(( $( echo ${ROOTP} | cut -f2 -d\ | tr -d "B" ) )) START=$(( $( echo ${ROOTP} | cut -f2 -d\ | tr -d "B" ) ))
SIZE=$(( $( echo ${ROOTP} | cut -f4 -d\ | tr -d "B" ) )) SIZE=$(( $( echo ${ROOTP} | cut -f4 -d\ | tr -d "B" ) ))
dd if="${FILE}" of="${ROOTFS}" bs=${_bs} \ dd if="${1%.zip}" of="root-a.ext2" bs=1024 \
skip=$(( ${START} / ${_bs} )) count=$(( ${SIZE} / ${_bs} )) || \ skip=$(( ${START} / 1024 )) count=$(( ${SIZE} / 1024 )) || \
err "extract_partition, dd ${FILE}, ${ROOTFS}" err "extract_partition, dd ${1%.zip}, root-a.ext2"
}
extract_shellball()
{
printf "Extracting chromeos-firmwareupdate\n"
printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" \
| debugfs "${ROOTFS}" || err "extract_shellball: debugfs"
} }