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util/chromeos/extract_blobs: try using RW_MAIN_A region first 

Since the RW firmware may contain newer/additional blobs than the
RO COREBOOT region, try using it first, then fall back to
COREBOOT and eventually BOOT_STUB if necessary.

TEST=extract blobs from dedede and brya firmware images

Change-Id: Ia01b37f8c410685de8a17ea4105ca671931a47c5
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68453
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
This commit is contained in:
Matt DeVillier 2022-10-15 12:04:08 -05:00 committed by Martin L Roth
parent 86284c231f
commit 0923c62448
1 changed files with 22 additions and 18 deletions
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36
util/chromeos/extract_blobs.sh
View File

@ -33,20 +33,24 @@ if [[ "$IFDTOOL" = "" ]]; then
exit 1
fi
# ensure valid coreboot image / get list of main COREBOOT CBFS contents
REGION=""
if ! $CBFSTOOL $IMAGE print >$DIR/cbfs.txt 2>/dev/null; then
# try using BOOT_STUB region
if ! $CBFSTOOL $IMAGE print -r BOOT_STUB >$DIR/cbfs.txt; then
# ensure valid coreboot image / get list of CBFS contents
# try using RW_MAIN_A region first as it may contain newer
# files / files not present in the COREBOOT region
if $CBFSTOOL $IMAGE print -r FW_MAIN_A >$DIR/cbfs.txt 2>/dev/null; then
REGION="FW_MAIN_A"
elif $CBFSTOOL $IMAGE print -r COREBOOT >$DIR/cbfs.txt; then
# use COREBOOT region
REGION="COREBOOT"
elif $CBFSTOOL $IMAGE print -r BOOT_STUB >$DIR/cbfs.txt; then
# use BOOT_STUB region
REGION="BOOT_STUB"
else
echo "Error reading CBFS: $IMAGE is not a valid coreboot image"
exit 1
else
REGION="-r BOOT_STUB"
fi
fi
echo ""
echo "Extracting blobs..."
echo "Extracting blobs from region $REGION..."
echo ""
# extract flash regions
@ -60,39 +64,39 @@ mv flashregion_0_flashdescriptor.bin $DIR/flashdescriptor.bin
rm flashregion_*.bin
# extract microcode
$CBFSTOOL $IMAGE extract $REGION -n cpu_microcode_blob.bin -f $DIR/cpu_microcode_blob.bin
$CBFSTOOL $IMAGE extract -r $REGION -n cpu_microcode_blob.bin -f $DIR/cpu_microcode_blob.bin
# extract VGA BIOS
VGA=$(grep pci $DIR/cbfs.txt | cut -f1 -d\ )
if [ "$VGA" != "" ]; then
$CBFSTOOL $IMAGE extract $REGION -n $VGA -f $DIR/vgabios.bin
$CBFSTOOL $IMAGE extract -r $REGION -n $VGA -f $DIR/vgabios.bin
fi
# extract MRC.bin
MRC=$(grep mrc.bin $DIR/cbfs.txt | cut -f1 -d\ )
if [ "$MRC" != "" ]; then
$CBFSTOOL $IMAGE extract $REGION -n "$MRC" -f "$DIR/$MRC"
$CBFSTOOL $IMAGE extract -r $REGION -n "$MRC" -f "$DIR/$MRC"
fi
# extract refcode
REF=$(grep refcode $DIR/cbfs.txt | cut -f1 -d\ )
if [ "$REF" != "" ]; then
$CBFSTOOL $IMAGE extract $REGION -n fallback/refcode -f "$DIR/refcode.elf" -m x86
$CBFSTOOL $IMAGE extract -r $REGION -n fallback/refcode -f "$DIR/refcode.elf" -m x86
fi
# extract FSP blobs
for FSP in $(grep fsp $DIR/cbfs.txt | cut -f1 -d\ ); do
$CBFSTOOL $IMAGE extract $REGION -n $FSP -f $DIR/$FSP
$CBFSTOOL $IMAGE extract -r $REGION -n $FSP -f $DIR/$FSP
done
# extract audio blobs
for AUD in $(grep -e "-2ch-" -e "-4ch-" $DIR/cbfs.txt | cut -f1 -d\ ); do
$CBFSTOOL $IMAGE extract $REGION -n $AUD -f $DIR/$AUD
$CBFSTOOL $IMAGE extract -r $REGION -n $AUD -f $DIR/$AUD
done
# extract VBTs
for VBT in $(grep vbt $DIR/cbfs.txt | cut -f1 -d\ ); do
$CBFSTOOL $IMAGE extract $REGION -n $VBT -f $DIR/$VBT
$CBFSTOOL $IMAGE extract -r $REGION -n $VBT -f $DIR/$VBT
done
# extract IFWI