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Tesla Model S/X MCU1 eMMC image creator
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| #!/bin/bash | |
| # | |
| # Create a 8GB eMMC image for Tesla Model S/X MCU1 | |
| # | |
| # Example usage: ./mkteslaemmcimg.sh ./vinXXXXX.img ./develop-2019.20.2.1-16-5659e07dfd.img | |
| # | |
| set -e | |
| FIRMWARE=$2 | |
| IMAGE=$1 | |
| SIZE=7818182656 | |
| INDEX=$((10 + RANDOM % 100)) | |
| LOOP="loop${INDEX}" | |
| if [ "$#" -ne 2 ]; then | |
| echo "Usage: $0 <image file> <firmware file>" | |
| exit 255 | |
| fi | |
| if [ -e "${IMAGE}" ]; then | |
| echo "Error: ${IMAGE} already exists" | |
| exit 1 | |
| fi | |
| if [ ! -f "${FIRMWARE}" ]; then | |
| echo "Error: ${FIRMWARE} does not exist" | |
| exit 2 | |
| fi | |
| echo "Info: Writing empty image file=${IMAGE} size=${SIZE}" | |
| dd if=/dev/zero of=${IMAGE} bs=1024 count=7634944 | |
| echo "Info: Creating partitions on ${IMAGE}" | |
| parted -s ${IMAGE} mklabel msdos | |
| parted -s ${IMAGE} mkpart primary 4096s 2101247s | |
| parted -s ${IMAGE} mkpart primary 2101248s 4198399s | |
| parted -s ${IMAGE} mkpart primary 4198400s 4460543s | |
| parted -s ${IMAGE} mkpart primary 4460544s 15269887s | |
| echo "Info: Setting up loop device ${LOOP}" | |
| sudo losetup -P ${LOOP} ${IMAGE} | |
| echo "Info: Writing ${FIRMWARE} to partitions 1 and 2" | |
| sudo dd if=${FIRMWARE} of=/dev/${LOOP}p1 | |
| sudo dd if=${FIRMWARE} of=/dev/${LOOP}p2 | |
| echo "Info: Creating empty ext3 filesystem on partitions 3 and 4" | |
| sudo mkfs.ext3 /dev/${LOOP}p3 | |
| sudo mkfs.ext3 /dev/${LOOP}p4 | |
| echo "Info: Creating tesla1/tesla2 tokens" | |
| P3DIR=$(mktemp -d) | |
| P4DIR=$(mktemp -d) | |
| sudo mount /dev/${LOOP}p3 "${P3DIR}" | |
| sudo mount /dev/${LOOP}p4 "${P4DIR}" | |
| sudo mkdir -p "${P3DIR}/etc/saccess/" | |
| RANDTOKEN=$(openssl rand -hex 8) | |
| echo "Info: tesla1/tesla2 token: ${RANDTOKEN}" | |
| sudo sh -c "echo ${RANDTOKEN} > ${P3DIR}/etc/saccess/tesla1" | |
| sudo sh -c "echo ${RANDTOKEN} > ${P3DIR}/etc/saccess/tesla2" | |
| sudo touch --date="2030/09/09 01:11" "${P3DIR}/etc/saccess/tesla1" | |
| sudo touch --date="2030/09/09 01:11" "${P3DIR}/etc/saccess/tesla2" | |
| echo "Info: Cleaning up loop device ${LOOP}" | |
| sudo losetup -d /dev/${LOOP} |
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