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- get_magic_at() {
- local file="$1"
- local pos="$2"
- get_image "$file" | dd bs=1 count=2 skip="$pos" 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
- }
- platform_check_image_sdcard() {
- local file="$1"
- local magic diskdev partdev diff
- magic=$(get_magic_at "$file" 510)
- [ "$magic" != "55aa" ] && {
- echo "Failed to verify MBR boot signature."
- return 1
- }
- export_bootdevice && export_partdevice diskdev 0 || {
- echo "Unable to determine upgrade device"
- return 1
- }
- get_partitions "/dev/$diskdev" bootdisk
- #extract the boot sector from the image
- get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b 2>/dev/null
- get_partitions /tmp/image.bs image
- #compare tables
- diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
- rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
- if [ -n "$diff" ]; then
- echo "Partition layout has changed. Full image will be written."
- ask_bool 0 "Abort" && exit 1
- return 0
- fi
- }
- platform_do_upgrade_sdcard() {
- local board=$(board_name)
- local diskdev partdev diff
- export_bootdevice && export_partdevice diskdev 0 || {
- echo "Unable to determine upgrade device"
- return 1
- }
- sync
- if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
- get_partitions "/dev/$diskdev" bootdisk
- #extract the boot sector from the image
- get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
- get_partitions /tmp/image.bs image
- #compare tables
- diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
- else
- diff=1
- fi
- if [ -n "$diff" ]; then
- get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
- # Separate removal and addtion is necessary; otherwise, partition 1
- # will be missing if it overlaps with the old partition 2
- partx -d - "/dev/$diskdev"
- partx -a - "/dev/$diskdev"
- else
- #write uboot image
- get_image "$@" | dd of="$diskdev" bs=512 skip=1 seek=1 count=2048 conv=fsync
- #iterate over each partition from the image and write it to the boot disk
- while read part start size; do
- if export_partdevice partdev $part; then
- echo "Writing image to /dev/$partdev..."
- get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
- else
- echo "Unable to find partition $part device, skipped."
- fi
- done < /tmp/partmap.image
- #copy partition uuid
- echo "Writing new UUID to /dev/$diskdev..."
- get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
- fi
- case "$board" in
- cznic,turris-omnia)
- fw_setenv openwrt_bootargs 'earlyprintk console=ttyS0,115200 root=/dev/mmcblk0p2 rootfstype=auto rootwait'
- fw_setenv openwrt_mmcload 'setenv bootargs "$openwrt_bootargs cfg80211.freg=$regdomain"; fatload mmc 0 0x01000000 zImage; fatload mmc 0 0x02000000 armada-385-turris-omnia.dtb'
- fw_setenv factory_mmcload 'setenv bootargs "$bootargs cfg80211.freg=$regdomain"; btrload mmc 0 0x01000000 boot/zImage @; btrload mmc 0 0x02000000 boot/dtb @'
- fw_setenv mmcboot 'run openwrt_mmcload || run factory_mmcload; bootz 0x01000000 - 0x02000000'
- ;;
- esac
- sleep 1
- }
- platform_copy_config_sdcard() {
- local partdev
- if export_partdevice partdev 1; then
- mkdir -p /boot
- [ -f /boot/kernel.img ] || mount -o rw,noatime /dev/$partdev /boot
- cp -af "$UPGRADE_BACKUP" "/boot/$BACKUP_FILE"
- sync
- umount /boot
- fi
- }
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