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265 lines
6.2 KiB
265 lines
6.2 KiB
#!/bin/bash
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# SPDX-License-Identifier: GPL-3.0+
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# Copyright (C) 2018, Martin Kepplinger <martink@posteo.de>
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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NC='\033[0m'
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set -e
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cd "$(dirname "$0")"
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IFDTOOL=./util/ifdtool/ifdtool
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ME_CLEANER_PATH=./util/me_cleaner/me_cleaner.py
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have_chipname=0
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have_backupname=0
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me_clean=0
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lock=0
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have_flasher=0
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rpi_frequency=0
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usage()
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{
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echo "Skulls for the X230 Tablet"
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echo " Run this script on an external computer with a flasher"
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echo " connected to the X230T's bottom chip (farther away from"
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echo " the display, closer to you)."
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echo ""
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echo "Usage: $0 [-m] [-k <backup_filename>] [-l] [-f <flasher>] [-b <spispeed>] [-c <chip>]"
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echo ""
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echo " -f <hardware_flasher> supported flashers: rpi, ch341a"
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echo " -c <chipname> flashrom chip name to use"
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echo " -m apply me_cleaner -S -d"
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echo " -l lock the flash instead of unlocking it"
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echo " -k <backup> save the current image as"
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echo " -b <spi frequency> frequency of the RPi SPI bus in Hz. default: 128"
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}
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args=$(getopt -o f:mlc:k:hb: -- "$@")
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if [ $? -ne 0 ] ; then
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usage
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exit 1
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fi
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eval set -- "$args"
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while [ $# -gt 0 ]
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do
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case "$1" in
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-f)
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FLASHER=$2
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have_flasher=1
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shift
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;;
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-m)
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me_clean=1
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;;
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-l)
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lock=1
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;;
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-c)
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CHIPNAME=$2
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have_chipname=1
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shift
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;;
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-k)
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BACKUPNAME=$2
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have_backupname=1
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shift
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;;
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-b)
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rpi_frequency=$2
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shift
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;;
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-h)
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usage
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exit 1
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;;
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--)
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shift
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break
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;;
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*)
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echo "Invalid option: $1"
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usage
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exit 1
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;;
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esac
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shift
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done
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command -v flashrom >/dev/null 2>&1 || { echo -e >&2 "${RED}Please install flashrom and run as root${NC}."; exit 1; }
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command -v make >/dev/null 2>&1 || { echo -e >&2 "${RED}Please install make and a C compiler${NC}."; exit 1; }
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command -v mktemp >/dev/null 2>&1 || { echo -e >&2 "${RED}Please install mktemp (coreutils)${NC}."; exit 1; }
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if [ ! "$have_flasher" -gt 0 ] ; then
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echo "Skulls for the X230"
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echo ""
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echo "Please select the hardware you use:"
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PS3='Please select the hardware flasher: '
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options=("Raspberry Pi" "CH341A" "Exit")
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select opt in "${options[@]}"
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do
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case $opt in
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"Raspberry Pi")
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FLASHER="rpi"
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break
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;;
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"CH341A")
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FLASHER="ch341a"
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break
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;;
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"Exit")
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exit 0
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;;
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*) echo invalid option;;
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esac
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done
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fi
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if [ ! "${rpi_frequency}" -gt 0 ] ; then
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rpi_frequency=512
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fi
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programmer=""
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if [ "${FLASHER}" = "rpi" ] ; then
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echo "Ok. Run this on a Rasperry Pi."
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programmer="linux_spi:dev=/dev/spidev0.0,spispeed=${rpi_frequency}"
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elif [ "${FLASHER}" = "ch341a" ] ; then
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echo "Ok. Connect a CH341A programmer"
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programmer="ch341a_spi"
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else
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echo "invalid flashrom programmer"
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usage
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exit 1
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fi
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TEMP_DIR=$(mktemp -d)
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if [ ! -d "$TEMP_DIR" ]; then
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echo -e "${RED}Error:${NC} Could not create temp dir"
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rm -rf "${TEMP_DIR}"
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exit 1
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fi
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if [ ! "$have_chipname" -gt 0 ] ; then
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echo "trying to detect the chip..."
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flashrom -p ${programmer} &> "${TEMP_DIR}"/chips || true
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flashrom_error=""
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flashrom_error=$(cat "${TEMP_DIR}"/chips | grep -i error || true)
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if [ ! -z "${flashrom_error}" ] ; then
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usage
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echo "-------------- flashrom error: ---------------"
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cat "${TEMP_DIR}"/chips
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rm -rf "${TEMP_DIR}"
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exit 1
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fi
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CHIPNAME=""
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chip_found=0
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if [ ! "$chip_found" -gt 0 ] ; then
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CHIPNAME=$(cat "${TEMP_DIR}"/chips | grep Found | grep "MX25L6406E/MX25L6408E" | grep -oP '"\K[^"\047]+(?=["\047])' || true)
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if [ ! -z "${CHIPNAME}" ] ; then
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chip_found=1
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fi
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fi
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if [ ! "$chip_found" -gt 0 ] ; then
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CHIPNAME=$(cat "${TEMP_DIR}"/chips | grep Found | grep "EN25QH64" | grep -o '".*"' | grep -oP '"\K[^"\047]+(?=["\047])' || true)
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if [ ! -z "${CHIPNAME}" ] ; then
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chip_found=1
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fi
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fi
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if [ ! "$chip_found" -gt 0 ] ; then
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CHIPNAME=$(cat "${TEMP_DIR}"/chips | grep Found | grep "W25Q64.V" | grep -o '".*"' | grep -oP '"\K[^"\047]+(?=["\047])' || true)
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if [ ! -z "${CHIPNAME}" ] ; then
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chip_found=1
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fi
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fi
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if [ ! "$chip_found" -gt 0 ] ; then
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echo "chip not detected."
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flashrom -p ${programmer} || true
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rm -rf "${TEMP_DIR}"
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echo "chip not detected. Please find it manually and rerun with the -c parameter."
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exit 1
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else
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echo -e "Detected ${GREEN}${CHIPNAME}${NC}."
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fi
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fi
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make -C util/ifdtool
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if [ ! -e ${IFDTOOL} ] ; then
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echo "ifdtool not found at ${IFDTOOL}"
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exit 1
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fi
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if [ ! "$me_clean" -gt 0 ] ; then
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echo -e "Intel ME will ${RED}not${NC} be cleaned. Use -m if it should be."
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else
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echo -e "Intel ME will be ${GREEN}cleaned${NC}."
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fi
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if [ ! "$lock" -gt 0 ] ; then
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echo -e "The flash ROM will be ${GREEN}unlocked${NC}."
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else
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echo -e "The flash ROM will be ${RED}locked${NC}."
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fi
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if [ "$me_clean" -gt 0 ] ; then
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if [ ! -e ${ME_CLEANER_PATH} ] ; then
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echo "me_cleaner not found at ${ME_CLEANER_PATH}"
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rm -rf "${TEMP_DIR}"
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exit 1
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fi
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fi
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echo "Start reading 2 times. Please be patient..."
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flashrom -p ${programmer} -c ${CHIPNAME} -r "${TEMP_DIR}"/test1.rom
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flashrom -p ${programmer} -c ${CHIPNAME} -r "${TEMP_DIR}"/test2.rom
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cmp --silent "${TEMP_DIR}"/test1.rom "${TEMP_DIR}"/test2.rom
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if [ "$have_backupname" -gt 0 ] ; then
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cp "${TEMP_DIR}"/test1.rom "${BACKUPNAME}"
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sha256sum "${TEMP_DIR}"/test1.rom > "${BACKUPNAME}".sha256
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echo "current image saved as ${BACKUPNAME}"
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fi
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reference_size=8388608
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TEMP_SIZE=$(wc -c <"$TEMP_DIR/test1.rom")
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if [ ! "$reference_size" -eq "$TEMP_SIZE" ] ; then
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echo -e "${RED}Error:${NC} didn't read 8M. You might be at the wrong chip."
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rm -rf "${TEMP_DIR}"
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exit 1
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fi
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echo -e "${GREEN}connection ok${NC}"
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echo "start unlocking ..."
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if [ "$me_clean" -gt 0 ] ; then
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${ME_CLEANER_PATH} -d -S -O "${TEMP_DIR}"/work.rom "${TEMP_DIR}"/test1.rom
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else
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cp "${TEMP_DIR}"/test1.rom "${TEMP_DIR}"/work.rom
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fi
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if [ ! "$lock" -gt 0 ] ; then
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${IFDTOOL} -u "${TEMP_DIR}"/work.rom
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else
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${IFDTOOL} -l "${TEMP_DIR}"/work.rom
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fi
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if [ ! -e "${TEMP_DIR}"/work.rom.new ] ; then
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echo -e "${RED}Error:${NC} ifdtool failed. ${TEMP_DIR}/work.rom.new not found."
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rm -rf "${TEMP_DIR}"
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exit 1
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fi
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if [ "$me_clean" -gt 0 ] ; then
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echo -e "${GREEN}ifdtool and me_cleaner ok${NC}"
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else
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echo -e "${GREEN}ifdtool ok${NC}"
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fi
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make clean -C util/ifdtool
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echo "start writing..."
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flashrom -p ${programmer} -c "${CHIPNAME}" -w "${TEMP_DIR}"/work.rom.new
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rm -rf "${TEMP_DIR}"
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echo -e "${GREEN}DONE${NC}"
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