haswell: re-add mrc.bin in separate board configs

libre mrc on haswell is quite buggy for now, but works in
a limited fashion

this patch re-adds the old configs, but as _mrc for example
t440p_12mb_mrc instead of t440p_12mb

and t440p_12mb (without _mrc) still uses the libre mrc code

1 files changed, 169 insertions, 0 deletions

diff --git a/resources/scripts/download/mrc b/resources/scripts/download/mrc
new file mode 100755
index 00000000..49657fec
--- /dev/null
+++ b/resources/scripts/download/mrc
@@ -0,0 +1,169 @@
+#!/usr/bin/env sh
+
+# Download Intel MRC images
+#
+#    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.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# This script assumes that the working directory is the
+# root of osboot_src or osboot git.
+
+# This file is forked from util/chromeos/crosfirmware.sh in coreboot cfc26ce278
+# Changes to it in osboot are copyright 2021 Leah Rowe
+
+[ "x${DEBUG+set}" = 'xset' ] && set -v
+set -u -e
+
+# On some systems, `parted` and `debugfs` are located in /sbin.
+export PATH="${PATH}:/sbin"
+
+download_image()
+{
+	_url=${1}
+	_file=${2}
+	_sha1sum=${3}
+
+	echo "Downloading recovery image"
+	curl "$_url" > "$_file.zip"
+	if [ "$(sha1sum ${_file}.zip | awk '{print $1}')" = "${_sha1sum}" ]; then
+		unzip -q "${_file}.zip"
+		rm "${_file}.zip"
+		echo "Checksum verification passed for recovery image."
+		return 0
+	else
+		rm "${_file}.zip"
+		echo "Bad checksum. Recovery image deleted."
+		return 1
+	fi
+}
+
+extract_partition()
+{
+	NAME=${1}
+	FILE=${2}
+	ROOTFS=${3}
+	_bs=1024
+
+	echo "Extracting ROOT-A partition"
+	ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
+		 parted ${FILE} 2>/dev/null | 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} / ${_bs} ))  > /dev/null
+}
+
+extract_shellball()
+{
+	ROOTFS=${1}
+	SHELLBALL=${2}
+
+	echo "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 )
+
+	echo "Extracting coreboot image"
+	sh ${_shellball} --unpack ${_unpacked} > /dev/null
+
+	_version=$( cat ${_unpacked}/VERSION | grep BIOS\ version: | \
+			cut -f2 -d: | tr -d \  )
+
+	cp ${_unpacked}/bios.bin coreboot-${_version}.bin
+	rm -r "${_unpacked}"
+}
+
+check_existing()
+{
+	_mrc_complete_hash="d18de1e3d52c0815b82ea406ca07897c56c65696"
+	if [ -f mrc/haswell/mrc.bin ]; then
+		printf 'found existing mrc.bin, checking its hash\n'
+		if [ "$(sha1sum mrc/haswell/mrc.bin | awk '{print $1}')" = "${_mrc_complete_hash}" ]; then
+			printf 'checksums matched, skipping redownloading image\n'
+			return 0
+		else
+			printf 'hashes did not match, starting over\n'
+			return 1
+		fi
+
+	else
+		return 1
+	fi
+}
+
+# Skips redownloading every time the script runs
+check_existing && exit 0
+
+if [ ! -d "coreboot/default/" ]; then
+    ./download coreboot default
+fi
+
+if [ ! -f "coreboot/default/util/cbfstool/cbfstool" ]; then
+    ./build module cbutils default
+fi
+
+# Remove the old version that may still exist
+# ------------------------------------------------------------------------------
+
+printf "Downloading Intel MRC blobs\n"
+
+
+#rm -Rf "mrc/"
+
+mkdir -p mrc/haswell/
+
+(
+
+cd mrc/haswell/
+
+# https://web.archive.org/web/20210211071412/https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.conf
+# peppy image used as defined here, mrc.bin extracted from that.
+# when wanting to use an updated version later on, just change the url and
+# sha1sums and such, in this script, based on a newer version on archive.org.
+
+# For haswell mrc.bin, used on ThinkPad T440p and W541
+_board="peppy"
+_file="chromeos_12239.92.0_peppy_recovery_stable-channel_mp-v3.bin"
+_url="https://dl.google.com/dl/edgedl/chromeos/recovery/chromeos_12239.92.0_peppy_recovery_stable-channel_mp-v3.bin.zip"
+_url2="https://web.archive.org/web/20200516070928/https://dl.google.com/dl/edgedl/chromeos/recovery/chromeos_12239.92.0_peppy_recovery_stable-channel_mp-v3.bin.zip"
+_sha1sum="cd5917cbe7f821ad769bf0fd87046898f9e175c8"
+
+download_image ${_url} ${_file} ${_sha1sum}
+if [ ! -f ${_file} ]; then
+	download_image ${_url2} ${_file} ${_sha1sum}
+fi
+if [ ! -f $_file ]; then
+	echo "${_file} was not downloaded, or verification failed. Exiting"
+	exit 1
+fi
+
+extract_partition ROOT-A ${_file} root-a.ext2
+extract_shellball root-a.ext2 chromeos-firmwareupdate-${_board}
+
+extract_coreboot chromeos-firmwareupdate-${_board}
+
+../../coreboot/default/util/cbfstool/cbfstool coreboot-*.bin extract -f mrc.bin -n mrc.bin -r RO_SECTION
+rm -f "chromeos-firmwareupdate-${_board}" coreboot-*.bin "${_file}" "root-a.ext2"
+
+printf "\n\nHaswell mrc.bin file (for T440p and W541) downloaded to mrc/haswell/mrc.bin\n\n"
+
+)
+
+exit 0