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https://github.com/linuxboot/heads.git
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110 lines
3.2 KiB
Bash
Executable File
110 lines
3.2 KiB
Bash
Executable File
#!/bin/ash
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#
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# NOTE: This script is used on legacy-flash boards and runs with busybox ash,
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# not bash
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set -e -o pipefail
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. /etc/ash_functions
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. /tmp/config
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echo
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TRACE "Under /bin/flash.sh"
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case "$CONFIG_FLASH_OPTIONS" in
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"" )
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die "ERROR: No flash options have been configured!\n\nEach board requires specific CONFIG_FLASH_OPTIONS options configured. It's unsafe to flash without them.\n\nAborting."
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;;
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* )
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DEBUG "Flash options detected: $CONFIG_FLASH_OPTIONS"
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echo "Board $CONFIG_BOARD detected with flash options configured. Continuing..."
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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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$CONFIG_FLASH_OPTIONS -r "${ROM}" \
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|| recovery "Backup to $ROM failed"
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else
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cp "$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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|| recovery "$ROM: Config preservation failed"
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fi
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# persist serial number from CBFS
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if cbfs.sh -r serial_number > /tmp/serial 2>/dev/null; then
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echo "Persisting system serial"
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cbfs.sh -o /tmp/${CONFIG_BOARD}.rom -d serial_number 2>/dev/null || true
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cbfs.sh -o /tmp/${CONFIG_BOARD}.rom -a serial_number -f /tmp/serial
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fi
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# persist PCHSTRP9 from flash descriptor
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if [ "$CONFIG_BOARD" = "librem_l1um" ]; then
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echo "Persisting PCHSTRP9"
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$CONFIG_FLASH_OPTIONS -r /tmp/ifd.bin --ifd -i fd >/dev/null 2>&1 \
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|| die "Failed to read flash descriptor"
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dd if=/tmp/ifd.bin bs=1 count=4 skip=292 of=/tmp/pchstrp9.bin >/dev/null 2>&1
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dd if=/tmp/pchstrp9.bin bs=1 count=4 seek=292 of=/tmp/${CONFIG_BOARD}.rom conv=notrunc >/dev/null 2>&1
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fi
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warn "Do not power off computer. Updating firmware, this will take a few minutes"
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$CONFIG_FLASH_OPTIONS -w /tmp/${CONFIG_BOARD}.rom 2>&1 \
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|| recovery "$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: $0 [-c|-r] <path/to/image.(rom|tgz)>"
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fi
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if [ "$READ" -eq 0 ] && [ "${ROM##*.}" = tgz ]; then
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if [ "${CONFIG_BOARD%_*}" = talos-2 ]; then
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rm -rf /tmp/verified_rom
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mkdir /tmp/verified_rom
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tar -C /tmp/verified_rom -xf $ROM || die "Rom archive $ROM could not be extracted"
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if ! (cd /tmp/verified_rom/ && sha256sum -cs sha256sum.txt); then
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die "Provided tgz image did not pass hash verification"
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fi
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echo "Reading current flash and building an update image"
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$CONFIG_FLASH_OPTIONS -r /tmp/flash.sh.bak \
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|| recovery "Read of flash has failed"
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# ROM and bootblock already have ECC
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bootblock=$(echo /tmp/verified_rom/*.bootblock)
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rom=$(echo /tmp/verified_rom/*.rom)
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kernel=$(echo /tmp/verified_rom/*-zImage.bundled)
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pnor /tmp/flash.sh.bak -aw HBB < $bootblock
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pnor /tmp/flash.sh.bak -aw HBI < $rom
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pnor /tmp/flash.sh.bak -aw BOOTKERNEL < $kernel
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rm -rf /tmp/verified_rom
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ROM=/tmp/flash.sh.bak
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else
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die "$CONFIG_BOARD doesn't support tgz image format"
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fi
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fi
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flash_rom $ROM
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# don't leave temporary files lying around
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rm -f /tmp/flash.sh.bak
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exit 0
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