From 0848622799b8c627cd650d848ffa7d592d80b26d Mon Sep 17 00:00:00 2001
From: Leah Rowe <leah@libreboot.org>
Date: Thu, 17 Aug 2023 11:41:58 +0100
Subject: remove download scripts, consolidate into script
most of them were just calling the gitclone script,
so remove them.
the grub script was treating gnulib as a dependency.
i've now added the ability to grab 1 dependency, in
the gitclone script (it should be expanded later to
support multiple dependencies)
the gitclone script has been renamed to "fetch".
the "fetch_trees" script does more or less the same
thing, but calls "fetch" and handles multiple revisions
if a project needs that
this is more efficient, and slightly reduces the code
size of lbmk!
Signed-off-by: Leah Rowe <leah@libreboot.org>
---
resources/scripts/update/blobs/mrc | 186 +++++++++++++++++++++++++++++++++++++
1 file changed, 186 insertions(+)
create mode 100755 resources/scripts/update/blobs/mrc
(limited to 'resources/scripts/update/blobs/mrc')
diff --git a/resources/scripts/update/blobs/mrc b/resources/scripts/update/blobs/mrc
new file mode 100755
index 00000000..84e79f62
--- /dev/null
+++ b/resources/scripts/update/blobs/mrc
@@ -0,0 +1,186 @@
+#!/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/>.
+#
+
+[ "x${DEBUG+set}" = 'xset' ] && set -v
+set -u -e
+export PATH="${PATH}:/sbin"
+
+# This file is forked from util/chromeos/crosfirmware.sh in coreboot cfc26ce278
+# Changes to it in *this version* are copyright 2021 and 2023 Leah Rowe, under
+# the same license as above.
+
+# use updated manifest from wayback machine, when updating mrc.bin,
+# and update the other variables below accordingly. current manifest used:
+# https://web.archive.org/web/20210211071412/https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.conf
+
+# the wayback machine is used so that we get the same manifest. google
+# does not seem to version the manifest, but archives are available
+
+# variables taken from that manifest:
+
+_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"
+_mrc_complete_hash="d18de1e3d52c0815b82ea406ca07897c56c65696"
+_mrc_complete="mrc/haswell/mrc.bin"
+
+cbdir="coreboot/default"
+cbfstool="cbutils/default/cbfstool"
+
+sname=""
+
+main()
+{
+ sname=${0}
+ printf "Downloading Intel MRC blobs\n"
+
+ check_existing && exit 0
+ build_dependencies || fail "could not build dependencies"
+ fetch_mrc || fail "could not fetch mrc.bin"
+}
+
+check_existing()
+{
+ if [ ! -f ${_mrc_complete} ]; then
+ return 1
+ fi
+ printf 'found existing mrc.bin, checking its hash\n'
+ if [ "$(sha1sum ${_mrc_complete} | awk '{print $1}')" \
+ = "${_mrc_complete_hash}" ]; then
+ printf 'checksums matched, skipping downloading\n'
+ return 0
+ else
+ printf 'hashes did not match, starting over\n'
+ return 1
+ fi
+}
+
+build_dependencies()
+{
+ if [ ! -d "${cbdir}/" ]; then
+ ./fetch_trees coreboot default || return 1
+ fi
+ ./build module cbutils default || return 1
+ return 0
+}
+
+fetch_mrc()
+{
+ mkdir -p mrc/haswell/ || return 1
+
+ (
+ cd mrc/haswell/
+
+ download_image ${_url} ${_file} ${_sha1sum}
+ if [ ! -f ${_file} ]; then
+ download_image ${_url2} ${_file} ${_sha1sum}
+ fi
+ if [ ! -f $_file ]; then
+ fail "%{_file} not downloaded / verification failed."
+ fi
+
+ extract_partition ROOT-A ${_file} root-a.ext2
+ extract_shellball root-a.ext2 chromeos-firmwareupdate-${_board}
+
+ extract_coreboot chromeos-firmwareupdate-${_board}
+
+ ../../${cbfstool} coreboot-*.bin extract -f mrc.bin \
+ -n mrc.bin -r RO_SECTION \
+ || fail "Could not fetch mrc.bin"
+ rm -f "chromeos-firmwareupdate-${_board}" coreboot-*.bin \
+ "${_file}" "root-a.ext2"
+
+ printf "\n\nmrc.bin saved to ${_mrc_complete}\n\n"
+ )
+
+ return 0
+}
+
+download_image()
+{
+ url=${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}"
+}
+
+fail()
+{
+ printf "%s: ERROR: %s\n"
+ ${sname} ${1}
+ exit 1
+}
+
+main $@
--
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