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>

1 files changed, 186 insertions, 0 deletions

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 $@