166 lines
3.4 KiB
Bash
Executable File
166 lines
3.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# This file is part of the coreboot project.
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#
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# Copyright (C) 2016 Joe Pillow
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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#DEBUG=1
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# On some systems, `parted` and `debugfs` are located in /sbin.
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export PATH="$PATH:/sbin"
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debug()
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{
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test "$DEBUG" == "1" && echo "$*"
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}
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exit_if_uninstalled() {
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local cmd_name="$1"
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local deb_pkg_name="$2"
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if type "$cmd_name" >/dev/null 2>&1; then
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return
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fi
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printf '`%s` was not found. ' "$cmd_name" >&2
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printf 'On Debian-based systems, it can be installed\n' >&2
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printf 'by running `apt install %s`.\n' "$deb_pkg_name" >&2
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exit 1
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}
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exit_if_dependencies_are_missing() {
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exit_if_uninstalled "uudecode" "sharutils"
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exit_if_uninstalled "debugfs" "e2fsprogs"
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exit_if_uninstalled "parted" "parted"
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exit_if_uninstalled "curl" "curl"
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}
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get_inventory()
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{
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_conf=$1
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_url=https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.conf
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debug "Downloading recovery image inventory..."
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curl -s "$_url" > $_conf
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}
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download_image()
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{
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_url=$1
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_file=$2
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debug "Downloading recovery image"
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curl "$_url" > "$_file.zip"
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debug "Decompressing recovery image"
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unzip -q "$_file.zip"
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rm "$_file.zip"
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}
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extract_partition()
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{
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NAME=$1
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FILE=$2
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ROOTFS=$3
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_bs=1024
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debug "Extracting ROOT-A partition"
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ROOTP=$( printf "unit\nB\nprint\nquit\n" | \
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parted $FILE 2>/dev/null | grep $NAME )
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START=$(( $( echo $ROOTP | cut -f2 -d\ | tr -d "B" ) ))
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SIZE=$(( $( echo $ROOTP | cut -f4 -d\ | tr -d "B" ) ))
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dd if=$FILE of=$ROOTFS bs=$_bs skip=$(( $START / $_bs )) \
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count=$(( $SIZE / $_bs )) > /dev/null 2>&1
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}
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extract_shellball()
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{
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ROOTFS=$1
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SHELLBALL=$2
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debug "Extracting chromeos-firmwareupdate"
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printf "cd /usr/sbin\ndump chromeos-firmwareupdate $SHELLBALL\nquit" | \
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debugfs $ROOTFS > /dev/null 2>&1
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}
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extract_coreboot()
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{
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_shellball=$1
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_unpacked=$( mktemp -d )
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debug "Extracting coreboot image"
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sh $_shellball --sb_extract $_unpacked > /dev/null
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_version=$( cat $_unpacked/VERSION | grep BIOS\ version: | \
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cut -f2 -d: | tr -d \ )
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cp $_unpacked/bios.bin coreboot-$_version.bin
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rm -r "$_unpacked"
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}
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do_one_board()
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{
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_board=$1
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_url=$2
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_file=$3
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download_image $_url $_file
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extract_partition ROOT-A $_file root-a.ext2
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extract_shellball root-a.ext2 chromeos-firmwareupdate-$_board
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rm $_file root-a.ext2
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extract_coreboot chromeos-firmwareupdate-$_board
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}
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#
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# Main
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#
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BOARD=$1
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exit_if_dependencies_are_missing
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if [ "$BOARD" == "all" ]; then
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CONF=$( mktemp )
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get_inventory $CONF
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grep ^name= $CONF| while read _line; do
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name=$( echo $_line | cut -f2 -d= )
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echo Processing board $name
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eval $( grep -v hwid= $CONF | grep -A11 "$_line" | \
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grep '\(url=\|file=\)' )
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BOARD=$( echo $url | cut -f3 -d_ )
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do_one_board $BOARD $url $file
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done
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rm "$CONF"
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elif [ "$BOARD" != "" ]; then
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CONF=$( mktemp )
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get_inventory $CONF
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echo Processing board $BOARD
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eval $( grep $BOARD $CONF | grep '\(url=\|file=\)' )
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do_one_board $BOARD $url $file
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rm "$CONF"
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else
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echo "Usage: $0 <boardname>"
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echo " $0 all"
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echo
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exit 1
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fi
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