1#!/usr/bin/env bash 2# 3# SPDX-License-Identifier: GPL-2.0-only 4 5if [ ! -f "$1" ]; then 6 echo "Error: You must provide a valid filename" 7 exit 1 8fi 9 10IMAGE=$1 11 12if [[ "$2" = "" ]]; then 13 # create new dir '$IMAGE-blobs' (less file extension) 14 DIR=$(basename $IMAGE) 15 DIR="${DIR%.*}-blobs" 16else 17 DIR=$2 18fi 19mkdir -p $DIR 20 21if [ -f ./cbfstool ]; then 22 CBFSTOOL="./cbfstool" 23else 24 CBFSTOOL=$(command -v cbfstool) 25fi 26if [[ "$CBFSTOOL" = "" ]]; then 27 echo "Error: cbfstool must be in your path or exist locally" 28 exit 1 29fi 30 31if [ -f ./ifdtool ]; then 32 IFDTOOL="./ifdtool" 33else 34 IFDTOOL=$(which ifdtool) 35fi 36if [[ "$IFDTOOL" = "" ]]; then 37 echo "Error: ifdtool must be in your path or exist locally" 38 exit 1 39fi 40 41# ensure valid coreboot image / get list of CBFS contents 42# try using RW_MAIN_A region first as it may contain newer 43# files / files not present in the COREBOOT region 44if $CBFSTOOL $IMAGE print -r FW_MAIN_A >$DIR/cbfs.txt 2>/dev/null; then 45 REGION="FW_MAIN_A" 46elif $CBFSTOOL $IMAGE print -r COREBOOT >$DIR/cbfs.txt; then 47 # use COREBOOT region 48 REGION="COREBOOT" 49elif $CBFSTOOL $IMAGE print -r BOOT_STUB >$DIR/cbfs.txt; then 50 # use BOOT_STUB region 51 REGION="BOOT_STUB" 52else 53 echo "Error reading CBFS: $IMAGE is not a valid coreboot image" 54 exit 1 55fi 56 57echo "" 58echo "Extracting blobs from region $REGION..." 59echo "" 60 61# extract flash regions 62if ! $IFDTOOL -x $IMAGE >/dev/null; then 63 echo "Error reading flash descriptor/extracting flash regions" 64 exit 1 65fi 66# rename to normal convention; drop unused regions 67mv flashregion_0_flashdescriptor.bin $DIR/flashdescriptor.bin 68[ -f flashregion_2_intel_me.bin ] && mv flashregion_2_intel_me.bin $DIR/me.bin 69rm flashregion_*.bin 70 71# extract microcode 72$CBFSTOOL $IMAGE extract -r $REGION -n cpu_microcode_blob.bin -f $DIR/cpu_microcode_blob.bin 73 74# extract VGA BIOS 75VGA=$(grep pci $DIR/cbfs.txt | cut -f1 -d\ ) 76if [ "$VGA" != "" ]; then 77 $CBFSTOOL $IMAGE extract -r $REGION -n $VGA -f $DIR/vgabios.bin 78fi 79 80# extract MRC.bin 81MRC=$(grep mrc.bin $DIR/cbfs.txt | cut -f1 -d\ ) 82if [ "$MRC" != "" ]; then 83 $CBFSTOOL $IMAGE extract -r $REGION -n "$MRC" -f "$DIR/$MRC" 84fi 85 86# extract refcode 87REF=$(grep refcode $DIR/cbfs.txt | cut -f1 -d\ ) 88if [ "$REF" != "" ]; then 89 $CBFSTOOL $IMAGE extract -r $REGION -n fallback/refcode -f "$DIR/refcode.elf" -m x86 90fi 91 92# extract FSP blobs 93for FSP in $(grep fsp $DIR/cbfs.txt | cut -f1 -d\ ); do 94 $CBFSTOOL $IMAGE extract -r $REGION -n $FSP -f $DIR/$FSP 95done 96 97# extract audio blobs 98for AUD in $(grep -e "-2ch-" -e "-4ch-" $DIR/cbfs.txt | cut -f1 -d\ ); do 99 $CBFSTOOL $IMAGE extract -r $REGION -n $AUD -f $DIR/$AUD 100done 101 102# extract VBTs 103for VBT in $(grep vbt $DIR/cbfs.txt | cut -f1 -d\ ); do 104 $CBFSTOOL $IMAGE extract -r $REGION -n $VBT -f $DIR/$VBT 105done 106 107# extract IFWI 108IFWI=$(cbfstool $IMAGE layout -w | grep IFWI) 109if [ "$IFWI" != "" ]; then 110 $CBFSTOOL $IMAGE read -r IFWI -f $DIR/ifwi.bin 111fi 112 113# generate hashes 114( 115 cd $DIR 116 : >hashes.txt 117 for FILE in $(ls *.{bin,elf} 2>/dev/null); do 118 sha256sum $FILE >>hashes.txt 119 done 120) 121 122# a little housekeeping 123rm $DIR/cbfs.txt 124 125echo "" 126echo "All done" 127