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