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1a5e51ab00
Only bcm2708 and bcm2709 use "kernel.img" file name. bcm2710 and bcm2711 use "kernel8.img" and bcm2712 uses "kernel_2712.img". Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
100 lines
2.4 KiB
Bash
100 lines
2.4 KiB
Bash
. /lib/functions.sh
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REQUIRE_IMAGE_METADATA=1
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# copied from x86's platform.sh
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platform_check_image() {
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local diskdev partdev diff
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[ "$#" -gt 1 ] && return 1
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export_bootdevice && export_partdevice diskdev 0 || {
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echo "Unable to determine upgrade device"
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return 1
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}
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get_partitions "/dev/$diskdev" bootdisk
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#extract the boot sector from the image
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get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b 2>/dev/null
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get_partitions /tmp/image.bs image
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#compare tables
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diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
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rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
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if [ -n "$diff" ]; then
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echo "Partition layout has changed. Full image will be written."
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ask_bool 0 "Abort" && exit 1
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return 0
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fi
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return 0;
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}
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platform_do_upgrade() {
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local diskdev partdev diff
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export_bootdevice && export_partdevice diskdev 0 || {
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echo "Unable to determine upgrade device"
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return 1
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}
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sync
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if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
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get_partitions "/dev/$diskdev" bootdisk
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#extract the boot sector from the image
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get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
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get_partitions /tmp/image.bs image
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#compare tables
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diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
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else
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diff=1
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fi
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if [ -n "$diff" ]; then
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get_image "$@" | dd of="/dev/$diskdev" bs=2M conv=fsync
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# Separate removal and addtion is necessary; otherwise, partition 1
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# will be missing if it overlaps with the old partition 2
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partx -d - "/dev/$diskdev"
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partx -a - "/dev/$diskdev"
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return 0
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fi
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#iterate over each partition from the image and write it to the boot disk
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while read part start size; do
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if export_partdevice partdev $part; then
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echo "Writing image to /dev/$partdev..."
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get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
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else
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echo "Unable to find partition $part device, skipped."
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fi
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done < /tmp/partmap.image
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#copy partition uuid
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echo "Writing new UUID to /dev/$diskdev..."
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get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
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}
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platform_copy_config() {
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local partdev
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if export_partdevice partdev 1; then
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mkdir -p /boot
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[ -f "/boot/kernel*.img" ] || mount -t vfat -o rw,noatime "/dev/$partdev" /boot
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cp -af "$UPGRADE_BACKUP" "/boot/$BACKUP_FILE"
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tar -C / -zxvf "$UPGRADE_BACKUP" boot/cmdline.txt boot/config.txt
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sync
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umount /boot
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fi
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}
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