3 files changed, 218 insertions, 0 deletions
diff --git a/util/chromeos/README.md b/util/chromeos/README.md
new file mode 100644
index 0000000000..3c3d721a3c
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+Chrome OS binary extraction
+===========================
+
+These scripts can be used to extract System Agent reference code
+and other blobs (e.g. mrc.bin, refcode, VGA option roms) from a
+Chrome OS recovery image.
+
+crosfirmware.sh
+---------------
+
+crosfirmware.sh downloads a Chrome OS recovery image from the recovery
+image server, unpacks it, extracts the firmware update shell archive,
+extracts the firmware images from the shell archive.
+
+To download all Chrome OS firmware images, run
+$ ./crosfirmware.sh
+
+To download, e.g. the Panther firmware image, run
+$ ./crosfirmware.sh panther
+
+extract_blobs.sh
+----------------
+
+extract_blobs.sh extracts the blobs from a Chrome OS firmware image.
+
+Right now it will produce the ME firmware blob, IFD, VGA option rom,
+and mrc.bin
diff --git a/util/chromeos/crosfirmware.sh b/util/chromeos/crosfirmware.sh
new file mode 100644
index 0000000000..a4cb487c2c
--- /dev/null
+++ b/util/chromeos/crosfirmware.sh
@@ -0,0 +1,140 @@
+#!/bin/bash -x
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2016 Joe Pillow
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+
+# This script needs
+# * sharutils
+
+#DEBUG=1
+
+debug()
+{
+	test "$DEBUG" == "1" && echo "$*"
+}
+
+get_inventory()
+{
+	_conf=$1
+	_url=https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.conf
+
+	debug "Downloading recovery image inventory..."
+
+	curl -s "$_url" > $_conf
+}
+
+download_image()
+{
+	_url=$1
+	_file=$2
+
+	debug "Downloading recovery image"
+	curl -s "$_url" > "$_file.zip"
+	debug "Decompressing recovery image"
+	unzip -q "$_file.zip"
+	rm "$_file.zip"
+}
+
+extract_partition()
+{
+	NAME=$1
+	FILE=$2
+	ROOTFS=$3
+	_bs=1024
+
+	debug "Extracting ROOT-A partition"
+	ROOTP=$( printf "unit\nB\nprint\nquit\n" | parted $FILE | grep $NAME )
+
+	START=$(( $( echo $ROOTP | cut -f2 -d\ | tr -d "B" ) ))
+	SIZE=$(( $( echo $ROOTP | cut -f4 -d\ | tr -d "B" ) ))
+
+	dd if=$FILE of=$ROOTFS bs=$_bs skip=$(( $START / $_bs )) \
+		count=$(( $SIZE / $_bs ))  > /dev/null 2>&1
+}
+
+extract_shellball()
+{
+	ROOTFS=$1
+	SHELLBALL=$2
+
+	debug "Extracting chromeos-firmwareupdate"
+	printf "cd /usr/sbin\ndump chromeos-firmwareupdate $SHELLBALL\nquit" | \
+		debugfs $ROOTFS > /dev/null 2>&1
+}
+
+extract_coreboot()
+{
+	_shellball=$1
+	_unpacked=$( mktemp -d )
+
+	debug "Extracting coreboot image"
+	sh $_shellball --sb_extract $_unpacked > /dev/null
+
+	_version=$( cat $_unpacked/VERSION | grep BIOS\ version: | \
+			cut -f2 -d: | tr -d \  )
+
+	cp $_unpacked/bios.bin coreboot-$_version.bin
+	rm -r "$_unpacked"
+}
+
+do_one_board()
+{
+	_board=$1
+	_url=$2
+	_file=$3
+
+	download_image $_url $_file
+
+	extract_partition ROOT-A $_file root-a.ext2
+	extract_shellball root-a.ext2 chromeos-firmwareupdate-$_board
+	rm $_file root-a.ext2
+
+	extract_coreboot chromeos-firmwareupdate-$_board
+}
+
+#
+# Main
+#
+
+BOARD=$1
+
+if [ "$BOARD" == "all" ]; then
+	CONF=$( mktemp )
+	get_inventory $CONF
+
+	grep ^name= $CONF| while read _line; do
+		name=$( echo $_line | cut -f2 -d= )
+		echo Processing board $name
+		eval $( grep -v hwid= $CONF | grep -A11 "$_line" | \
+						grep '\(url=\|file=\)' )
+		BOARD=$( echo $url | cut -f3 -d_ )
+		do_one_board $BOARD $url $file
+	done
+
+	rm "$CONF"
+elif [ "$BOARD" != "" ]; then
+	CONF=$( mktemp )
+	get_inventory $CONF
+
+	echo Processing board $BOARD
+	eval $( grep $BOARD $CONF | grep '\(url=\|file=\)' )
+	do_one_board $BOARD $url $file
+
+	rm "$CONF"
+else
+	echo "Usage: $0 <boardname>"
+	echo "       $0 all"
+	echo
+	exit 1
+fi
diff --git a/util/chromeos/extract_blobs.sh b/util/chromeos/extract_blobs.sh
new file mode 100644
index 0000000000..af9d026234
--- /dev/null
+++ b/util/chromeos/extract_blobs.sh
@@ -0,0 +1,51 @@
+#!/bin/bash -x
+#
+# This file is part of the coreboot project.
+#
+# Copyright (C) 2016 Joe Pillow
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+
+IMAGE=$1
+
+if [ ! -r "$IMAGE" ]; then
+  echo "Can't find image $IMAGE."
+  exit 1
+fi
+
+CBFSTOOL=$(which cbfstool)
+if [ $? != 0 ]; then
+  echo "Can't find cbfstool."
+  exit 1
+fi
+
+IFDTOOL=$(which ifdtool)
+if [ $? != 0 ]; then
+  echo "Can't find ifdtool."
+  exit 1
+fi
+
+$CBFSTOOL $IMAGE print
+
+if [ $? -ne 0 ]; then
+  echo "Not a coreboot image: $IMAGE"
+  exit 1
+fi
+
+PCI=$($CBFSTOOL $IMAGE print|grep pci|cut -f1 -d\ )
+MRC=$($CBFSTOOL $IMAGE print|grep mrc.bin|cut -f1 -d\ )
+
+$CBFSTOOL $IMAGE extract -n $PCI -f $PCI
+$CBFSTOOL $IMAGE extract -n $MRC -f $MRC
+$IFDTOOL -x $IMAGE
+mv flashregion_0_flashdescriptor.bin flashdescriptor.bin
+mv flashregion_2_intel_me.bin me.bin
+rm flashregion_*.bin