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a27affcc7d
Librem devices store their serial number as a text file in cbfs; persist this across flashes. Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
79 lines
1.9 KiB
Bash
Executable File
79 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# based off of flashrom-x230
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#
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set -e -o pipefail
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. /etc/functions
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. /tmp/config
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case "$CONFIG_BOARD" in
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librem* )
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FLASHROM_OPTIONS='-p internal:laptop=force_I_want_a_brick,ich_spi_mode=hwseq'
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;;
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x230* )
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FLASHROM_OPTIONS='--force --noverify-all --programmer internal --ifd --image bios'
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;;
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"kgpe-d16" )
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FLASHROM_OPTIONS='--force --noverify --programmer internal'
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;;
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* )
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die "ERROR: No board has been configured!\n\nEach board requires specific flashrom options and it's unsafe to flash without them.\n\nAborting."
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;;
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esac
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flash_rom() {
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ROM=$1
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if [ "$READ" -eq 1 ]; then
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flashrom $FLASHROM_OPTIONS -r "${ROM}.1" \
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|| die "$ROM: Read failed"
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flashrom $FLASHROM_OPTIONS -r "${ROM}.2" \
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|| die "$ROM: Read failed"
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flashrom $FLASHROM_OPTIONS -r "${ROM}.3" \
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|| die "$ROM: Read failed"
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if [ `sha256sum ${ROM}.[123] | cut -f1 -d ' ' | uniq | wc -l` -eq 1 ]; then
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mv ${ROM}.1 $ROM
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rm ${ROM}.[23]
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else
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die "$ROM: Read inconsistent"
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fi
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else
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cp "$ROM" /tmp/${CONFIG_BOARD}.rom
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sha256sum /tmp/${CONFIG_BOARD}.rom
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if [ "$CLEAN" -eq 0 ]; then
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preserve_rom /tmp/${CONFIG_BOARD}.rom \
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|| die "$ROM: Config preservation failed"
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fi
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# persist serial number from CBFS
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if cbfs -r serial_number > /tmp/serial 2>/dev/null; then
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echo "Persisting system serial"
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cbfs -o /tmp/${CONFIG_BOARD}.rom -d serial_number 2>/dev/null || true
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cbfs -o /tmp/${CONFIG_BOARD}.rom -a serial_number -f /tmp/serial
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fi
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flashrom $FLASHROM_OPTIONS -w /tmp/${CONFIG_BOARD}.rom \
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|| die "$ROM: Flash failed"
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fi
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}
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if [ "$1" == "-c" ]; then
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CLEAN=1
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READ=0
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ROM="$2"
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elif [ "$1" == "-r" ]; then
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CLEAN=0
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READ=1
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ROM="$2"
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touch $ROM
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else
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CLEAN=0
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READ=0
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ROM="$1"
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fi
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if [ ! -e "$ROM" ]; then
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die "Usage: $0 [-c|-r] <path_to_image.rom>"
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fi
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flash_rom $ROM
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exit 0
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