127 lines
3.0 KiB
Bash
Executable File
127 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# SPDX-License-Identifier: GPL-2.0-only
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if [ ! -f "$1" ]; then
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echo "Error: You must provide a valid filename"
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exit 1
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fi
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IMAGE=$1
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if [[ "$2" = "" ]]; then
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# create new dir '$IMAGE-blobs' (less file extension)
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DIR=$(basename $IMAGE)
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DIR="${DIR%.*}-blobs"
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else
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DIR=$2
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fi
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mkdir -p $DIR
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if [ -f ./cbfstool ]; then
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CBFSTOOL="./cbfstool"
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else
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CBFSTOOL=$(command -v cbfstool)
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fi
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if [[ "$CBFSTOOL" = "" ]]; then
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echo "Error: cbfstool must be in your path or exist locally"
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exit 1
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fi
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if [ -f ./ifdtool ]; then
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IFDTOOL="./ifdtool"
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else
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IFDTOOL=$(which ifdtool)
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fi
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if [[ "$IFDTOOL" = "" ]]; then
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echo "Error: ifdtool must be in your path or exist locally"
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exit 1
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fi
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# ensure valid coreboot image / get list of CBFS contents
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# try using RW_MAIN_A region first as it may contain newer
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# files / files not present in the COREBOOT region
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if $CBFSTOOL $IMAGE print -r FW_MAIN_A >$DIR/cbfs.txt 2>/dev/null; then
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REGION="FW_MAIN_A"
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elif $CBFSTOOL $IMAGE print -r COREBOOT >$DIR/cbfs.txt; then
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# use COREBOOT region
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REGION="COREBOOT"
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elif $CBFSTOOL $IMAGE print -r BOOT_STUB >$DIR/cbfs.txt; then
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# use BOOT_STUB region
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REGION="BOOT_STUB"
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else
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echo "Error reading CBFS: $IMAGE is not a valid coreboot image"
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exit 1
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fi
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echo ""
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echo "Extracting blobs from region $REGION..."
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echo ""
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# extract flash regions
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if ! $IFDTOOL -x $IMAGE >/dev/null; then
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echo "Error reading flash descriptor/extracting flash regions"
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exit 1
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fi
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# rename to normal convention; drop unused regions
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mv flashregion_0_flashdescriptor.bin $DIR/flashdescriptor.bin
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[ -f flashregion_2_intel_me.bin ] && mv flashregion_2_intel_me.bin $DIR/me.bin
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rm flashregion_*.bin
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# extract microcode
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$CBFSTOOL $IMAGE extract -r $REGION -n cpu_microcode_blob.bin -f $DIR/cpu_microcode_blob.bin
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# extract VGA BIOS
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VGA=$(grep pci $DIR/cbfs.txt | cut -f1 -d\ )
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if [ "$VGA" != "" ]; then
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$CBFSTOOL $IMAGE extract -r $REGION -n $VGA -f $DIR/vgabios.bin
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fi
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# extract MRC.bin
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MRC=$(grep mrc.bin $DIR/cbfs.txt | cut -f1 -d\ )
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if [ "$MRC" != "" ]; then
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$CBFSTOOL $IMAGE extract -r $REGION -n "$MRC" -f "$DIR/$MRC"
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fi
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# extract refcode
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REF=$(grep refcode $DIR/cbfs.txt | cut -f1 -d\ )
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if [ "$REF" != "" ]; then
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$CBFSTOOL $IMAGE extract -r $REGION -n fallback/refcode -f "$DIR/refcode.elf" -m x86
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fi
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# extract FSP blobs
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for FSP in $(grep fsp $DIR/cbfs.txt | cut -f1 -d\ ); do
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$CBFSTOOL $IMAGE extract -r $REGION -n $FSP -f $DIR/$FSP
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done
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# extract audio blobs
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for AUD in $(grep -e "-2ch-" -e "-4ch-" $DIR/cbfs.txt | cut -f1 -d\ ); do
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$CBFSTOOL $IMAGE extract -r $REGION -n $AUD -f $DIR/$AUD
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done
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# extract VBTs
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for VBT in $(grep vbt $DIR/cbfs.txt | cut -f1 -d\ ); do
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$CBFSTOOL $IMAGE extract -r $REGION -n $VBT -f $DIR/$VBT
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done
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# extract IFWI
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IFWI=$(cbfstool $IMAGE layout -w | grep IFWI)
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if [ "$IFWI" != "" ]; then
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$CBFSTOOL $IMAGE read -r IFWI -f $DIR/ifwi.bin
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fi
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# generate hashes
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(
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cd $DIR
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: >hashes.txt
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for FILE in $(ls *.{bin,elf} 2>/dev/null); do
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sha256sum $FILE >>hashes.txt
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done
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)
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# a little housekeeping
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rm $DIR/cbfs.txt
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echo ""
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echo "All done"
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