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https://codeberg.org/libreboot/lbmk.git
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c1d6cd22c2
xbmkdir checks if a directory exists, before running mkdir, and then still uses -p i was testing xbmk on arch linux today, and noticed that it errored out when a directory already exists. i'm mitigating against buggy or differently behaving mkdir implementations this way, by wrapping around it. Signed-off-by: Leah Rowe <leah@libreboot.org>
78 lines
2.1 KiB
Bash
78 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 2021,2023-2025 Leah Rowe.
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# Original copyright detailed in repo: https://review.coreboot.org/coreboot/
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MRC_url=""
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MRC_url_bkup=""
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MRC_hash=""
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MRC_board=""
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SHELLBALL=""
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extract_refcode()
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{
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extract_mrc
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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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if [ -z "$cbfstoolref" ]; then
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err "cbfstoolref not set" "extract_refcode" "$@"
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fi
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x_ xbmkdir "${_pre_dest%/*}"
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x_ "$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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if [ -n "$MRC_refcode_gbe" ]; then
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x_ dd if="config/ifd/hp820g2/1.bin" of="$appdir/ref" bs=1 \
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seek=$MRC_refcode_gbe count=1 conv=notrunc; :
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fi
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x_ mv "$appdir/ref" "$_pre_dest"
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}
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extract_mrc()
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{
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if [ -z "$MRC_board" ]; then
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err "MRC_board unset" "extract_mrc" "$@"
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elif [ -z "$CONFIG_MRC_FILE" ]; then
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err "CONFIG_MRC_FILE unset" "extract_mrc" "$@"
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fi
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SHELLBALL="chromeos-firmwareupdate-$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 "$SHELLBALL" .
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) || err "mrc download/extract failure" "extract_mrc" "$@"
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x_ "$cbfstool" "$appdir/"bios.bin extract -n mrc.bin \
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-f "${_pre_dest%/*}/mrc.bin" -r RO_SECTION
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}
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extract_partition()
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{
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printf "Extracting ROOT-A partition\n"
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ROOTP=$( 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 $ROOTP | cut -f4 -d\ | tr -d "B" ) ))
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x_ dd if="${1%.zip}" of="root-a.ext2" bs=1024 skip=$(( $START / 1024 )) \
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count=$(( $SIZE / 1024 ))
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printf "cd /usr/sbin\ndump chromeos-firmwareupdate %s\nquit" \
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"$SHELLBALL" | debugfs "root-a.ext2" || \
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err "!extract shellball" "extract_partition" "$@"
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}
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