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2c77562af8
This explicitly lets stage2 know if partitions should be preserved. No
more "touch /tmp/sysupgrade.always.overwrite.bootdisk.partmap" hack.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit b6f4cd57e1)
114 lines
3.2 KiB
Bash
114 lines
3.2 KiB
Bash
get_magic_at() {
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local file="$1"
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local pos="$2"
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get_image "$file" | dd bs=1 count=2 skip="$pos" 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
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}
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platform_check_image_sdcard() {
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local file="$1"
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local magic diskdev partdev diff
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magic=$(get_magic_at "$file" 510)
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[ "$magic" != "55aa" ] && {
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echo "Failed to verify MBR boot signature."
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return 1
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}
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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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}
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platform_do_upgrade_sdcard() {
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local board=$(board_name)
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local diskdev partdev diff
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export_bootdevice && export_partdevice diskdev 0 || {
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echo "Unable to determine upgrade device"
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return 1
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}
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sync
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if [ "$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=4096 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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else
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#write uboot image
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get_image "$@" | dd of="$diskdev" bs=512 skip=1 seek=1 count=2048 conv=fsync
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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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fi
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case "$board" in
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cznic,turris-omnia)
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fw_setenv openwrt_bootargs 'earlyprintk console=ttyS0,115200 root=/dev/mmcblk0p2 rootfstype=auto rootwait'
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fw_setenv openwrt_mmcload 'setenv bootargs "$openwrt_bootargs cfg80211.freg=$regdomain"; fatload mmc 0 0x01000000 zImage; fatload mmc 0 0x02000000 armada-385-turris-omnia.dtb'
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fw_setenv factory_mmcload 'setenv bootargs "$bootargs cfg80211.freg=$regdomain"; btrload mmc 0 0x01000000 boot/zImage @; btrload mmc 0 0x02000000 boot/dtb @'
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fw_setenv mmcboot 'run openwrt_mmcload || run factory_mmcload; bootz 0x01000000 - 0x02000000'
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;;
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esac
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sleep 1
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}
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platform_copy_config_sdcard() {
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local partdev
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if export_partdevice partdev 1; then
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mkdir -p /boot
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[ -f /boot/kernel.img ] || mount -o rw,noatime /dev/$partdev /boot
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cp -af "$CONF_TAR" /boot/
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sync
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umount /boot
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fi
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}
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