diff options
Diffstat (limited to 'include/mrc.sh')
| -rw-r--r-- | include/mrc.sh | 86 |
1 files changed, 51 insertions, 35 deletions
diff --git a/include/mrc.sh b/include/mrc.sh index f5db2ff0..f1e31fa7 100644 --- a/include/mrc.sh +++ b/include/mrc.sh @@ -1,61 +1,77 @@ # SPDX-License-Identifier: GPL-2.0-only # Logic based on util/chromeos/crosfirmware.sh in coreboot cfc26ce278. -# Modifications in this version are Copyright 2021, 2023 and 2024 Leah Rowe. +# Modifications in this version are Copyright 2021,2023-2025 Leah Rowe. # Original copyright detailed in repo: https://review.coreboot.org/coreboot/ -eval "`setvars "" MRC_url MRC_url_bkup MRC_hash MRC_board SHELLBALL`" +MRC_url="" +MRC_url_bkup="" +MRC_hash="" +MRC_board="" +SHELLBALL="" + +extract_refcode() +{ + extract_mrc + + # cbfstool after coreboot 4.13 changed the stage file attribute scheme, + # and refcode is extracted from an image using the old scheme. we use + # cbfstool from coreboot 4.11_branch, the tree used by ASUS KGPE-D16: + + if [ -z "$cbfstoolref" ]; then + err "cbfstoolref not set" "extract_refcode" "$@" + fi + + x_ xbmkdir "${_pre_dest%/*}" + + x_ "$cbfstoolref" "$appdir/bios.bin" extract \ + -m x86 -n fallback/refcode -f "$appdir/ref" -r RO_SECTION + + # enable the Intel GbE device, if told by offset MRC_refcode_gbe + if [ -n "$MRC_refcode_gbe" ]; then + x_ dd if="config/ifd/hp820g2/1.bin" of="$appdir/ref" bs=1 \ + seek=$MRC_refcode_gbe count=1 conv=notrunc; : + fi + + x_ mv "$appdir/ref" "$_pre_dest" +} extract_mrc() { - chkvars "MRC_board" "CONFIG_MRC_FILE" + if [ -z "$MRC_board" ]; then + err "MRC_board unset" "extract_mrc" "$@" + elif [ -z "$CONFIG_MRC_FILE" ]; then + err "CONFIG_MRC_FILE unset" "extract_mrc" "$@" + fi + SHELLBALL="chromeos-firmwareupdate-$MRC_board" ( - x_ cd "$appdir" - extract_partition "${MRC_url##*/}" - extract_archive "$SHELLBALL" . - ) || $err "mrc download/extract failure" + x_ cd "$appdir" + extract_partition "${MRC_url##*/}" + extract_archive "$SHELLBALL" . - "$cbfstool" "$appdir/"bios.bin extract -n mrc.bin \ - -f "$_dest" -r RO_SECTION || $err "extract_mrc: !$cbfstool $_dest" + ) || err "mrc download/extract failure" "extract_mrc" "$@" - [ -n "$CONFIG_REFCODE_BLOB_FILE" ] && extract_refcode; return 0 + x_ "$cbfstool" "$appdir/"bios.bin extract -n mrc.bin \ + -f "${_pre_dest%/*}/mrc.bin" -r RO_SECTION } 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 "ex dd ${1%.zip}, root-a.ext2" - - printf "cd /usr/sbin\ndump chromeos-firmwareupdate $SHELLBALL\nquit" \ - | debugfs "root-a.ext2" || $err "can't extract shellball" -} -extract_refcode() -{ - _refdest="${CONFIG_REFCODE_BLOB_FILE##*../}" - e "$_refdest" f && return 0 - - # cbfstool changed the attributes scheme for stage files, - # incompatible with older versions before coreboot 4.14, - # so we need coreboot 4.13 cbfstool for certain refcode files - chkvars cbfstoolref - mkdir -p "${_refdest%/*}" || $err "ref: !mkdir -p ${_refdest%/*}" + SIZE=$(( $( echo $ROOTP | cut -f4 -d\ | tr -d "B" ) )) - "$cbfstoolref" "$appdir/bios.bin" extract \ - -m x86 -n fallback/refcode -f "$_refdest" -r RO_SECTION \ - || $err "extract_refcode $board: !cbfstoolref $_refdest" + x_ dd if="${1%.zip}" of="root-a.ext2" bs=1024 \ + skip=$(( $START / 1024 )) count=$(( $SIZE / 1024 )) - # enable the Intel GbE device, if told by offset MRC_refcode_gbe - [ -z "$MRC_refcode_gbe" ] || dd if="config/ifd/hp820g2/1.bin" \ - of="$_refdest" bs=1 seek=$MRC_refcode_gbe count=1 conv=notrunc || \ - $err "extract_refcode $_refdest: byte $MRC_refcode_gbe"; return 0 + printf "cd /usr/sbin\ndump chromeos-firmwareupdate %s\nquit" \ + "$SHELLBALL" | debugfs "root-a.ext2" || \ + err "!extract shellball" "extract_partition" "$@" } |