diff options
Diffstat (limited to 'resources/scripts/download/mrc')
| -rwxr-xr-x | resources/scripts/download/mrc | 181 |
1 files changed, 94 insertions, 87 deletions
diff --git a/resources/scripts/download/mrc b/resources/scripts/download/mrc index 49657fec..69c9eff2 100755 --- a/resources/scripts/download/mrc +++ b/resources/scripts/download/mrc @@ -15,17 +15,99 @@ # 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. +[ "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 osboot are copyright 2021 Leah Rowe +# Changes to it in *this version* are copyright 2021 and 2023 Leah Rowe, under +# the same license as above. -[ "x${DEBUG+set}" = 'xset' ] && set -v -set -u -e +# use updated manifest from wayback machine, when updating mrc.bin, +# and update the other variables below accordingly. current manifest used: +# https://web.archive.org/web/20210211071412/https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.conf -# On some systems, `parted` and `debugfs` are located in /sbin. -export PATH="${PATH}:/sbin" +# 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="${cbdir}/util/cbfstool/cbfstool" + +main() +{ + printf "Downloading Intel MRC blobs\n" + + check_existing && exit 0 + build_dependencies + fetch_mrc +} + +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 "${cbdir}/" ]; then + ./download coreboot default + fi + if [ ! -f "${cbfstool}" ]; then + ./build module cbutils default + fi +} + +fetch_mrc() +{ + mkdir -p mrc/haswell/ + + ( + cd mrc/haswell/ + + download_image ${_url} ${_file} ${_sha1sum} + if [ ! -f ${_file} ]; then + download_image ${_url2} ${_file} ${_sha1sum} + fi + if [ ! -f $_file ]; then + printf "%s not downloaded / verification failed. Exiting.\n" \ + ${_file} + exit 1 + 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 + rm -f "chromeos-firmwareupdate-${_board}" coreboot-*.bin \ + "${_file}" "root-a.ext2" + + printf "\n\nmrc.bin saved to ${_mrc_complete}\n\n" + ) +} download_image() { @@ -35,7 +117,8 @@ download_image() echo "Downloading recovery image" curl "$_url" > "$_file.zip" - if [ "$(sha1sum ${_file}.zip | awk '{print $1}')" = "${_sha1sum}" ]; then + if [ "$(sha1sum ${_file}.zip | awk '{print $1}')" = "${_sha1sum}" ] + then unzip -q "${_file}.zip" rm "${_file}.zip" echo "Checksum verification passed for recovery image." @@ -71,8 +154,8 @@ extract_shellball() SHELLBALL=${2} echo "Extracting chromeos-firmwareupdate" - printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" | \ - debugfs ${ROOTFS} > /dev/null 2>&1 + printf "cd /usr/sbin\ndump chromeos-firmwareupdate ${SHELLBALL}\nquit" \ + | debugfs ${ROOTFS} > /dev/null 2>&1 } extract_coreboot() @@ -90,80 +173,4 @@ extract_coreboot() rm -r "${_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 +main $@ |