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-rwxr-xr-xresources/scripts/download/mrc169
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