mirror of
https://codeberg.org/libreboot/lbmk.git
synced 2026-07-11 05:52:36 +02:00
Leah Rowe
14d46abced
that way, the Intel GbE device can be enabled there, and only then would the refcode file be copied. otherwise, the current behaviour would leave buggy refcode in place, if the dd command failed. Signed-off-by: Leah Rowe <leah@libreboot.org>
69 lines
2.1 KiB
Bash
69 lines
2.1 KiB
Bash
# 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, 2023 and 2024 Leah Rowe.
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# Original copyright detailed in repo: https://review.coreboot.org/coreboot/
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eval "`setvars "" MRC_url MRC_url_bkup MRC_hash MRC_board SHELLBALL`"
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extract_mrc()
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{
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extract_shellball
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"$cbfstool" "$appdir/"bios.bin extract -n mrc.bin \
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-f "$_dest" -r RO_SECTION || err "extract_mrc: !$cbfstool $_dest"
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[ -n "$CONFIG_REFCODE_BLOB_FILE" ] && extract_refcode extra; :
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}
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extract_refcode()
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{
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_refdest="${CONFIG_REFCODE_BLOB_FILE##*../}"
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e "$_refdest" f && return 0
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[ $# -lt 1 ] && extract_shellball
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# cbfstool after coreboot 4.13 changed the stage file attribute scheme,
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# and refcode is extracted from an image using the old scheme. we use
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# cbfstool from coreboot 4.11_branch, the tree used by ASUS KGPE-D16
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chkvars cbfstoolref
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mkdir -p "${_refdest%/*}" || err "ref: !mkdir -p ${_refdest%/*}"
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x_ "$cbfstoolref" "$appdir/bios.bin" extract \
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-m x86 -n fallback/refcode -f "$appdir/ref" -r RO_SECTION
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# enable the Intel GbE device, if told by offset MRC_refcode_gbe
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[ -z "$MRC_refcode_gbe" ] || x_ dd if="config/ifd/hp820g2/1.bin" \
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of="$appdir/ref" bs=1 seek=$MRC_refcode_gbe count=1 conv=notrunc; :
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x_ mv "$appdir/ref" "$_refdest"
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}
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extract_shellball()
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{
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chkvars "MRC_board" "CONFIG_MRC_FILE"
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SHELLBALL="chromeos-firmwareupdate-$MRC_board"
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(
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x_ cd "$appdir"
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extract_partition "${MRC_url##*/}"
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extract_archive "$SHELLBALL" .
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) || err "mrc download/extract failure"; :
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}
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extract_partition()
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{
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printf "Extracting ROOT-A partition\n"
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ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
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parted "${1%.zip}" 2>/dev/null | grep "ROOT-A" )
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START=$(( $( echo $ROOTP | cut -f2 -d\ | tr -d "B" ) ))
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SIZE=$(( $( echo $ROOTP | cut -f4 -d\ | tr -d "B" ) ))
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dd if="${1%.zip}" of="root-a.ext2" bs=1024 skip=$(( $START / 1024 )) \
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count=$(( $SIZE / 1024 )) || err "ex dd ${1%.zip}, root-a.ext2"
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printf "cd /usr/sbin\ndump chromeos-firmwareupdate %s\nquit" \
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"$SHELLBALL" | debugfs "root-a.ext2" || err "!extract shellball"
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}
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