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mvebu: sysupgrade: sdcard: keep user added partitons

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Currently sysupgrade overwrites whole disk and destroys partitions added
by user. Sync the sysupgrade code with the one present in x86 target to
remedy this behaviour.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
This commit is contained in:
Tomasz Maciej Nowak
2019-03-28 18:07:09 +01:00
committed by Hauke Mehrtens
parent 4e8345ff68
commit 2e5a0b81ec
5 changed files with 83 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
target/linux/mvebu/base-files/lib/upgrade/platform.sh
View File

@@ -8,7 +8,14 @@ RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'
REQUIRE_IMAGE_METADATA=1
platform_check_image() {
return 0
case "$(board_name)" in
armada-385-turris-omnia|armada-388-clearfog-base|armada-388-clearfog-pro|globalscale,espressobin|marvell,armada8040-mcbin)
platform_check_image_sdcard "$ARGV"
;;
*)
return 0
;;
esac
}
platform_do_upgrade() {

74
target/linux/mvebu/base-files/lib/upgrade/sdcard.sh
View File

@@ -6,7 +6,7 @@ get_magic_at() {
platform_check_image_sdcard() {
local file="$1"
local magic
local magic diskdev partdev diff
magic=$(get_magic_at "$file" 510)
[ "$magic" != "55aa" ] && {
@@ -14,18 +14,82 @@ platform_check_image_sdcard() {
return 1
}
return 0;
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
local diskdev partdev diff
export_bootdevice && export_partdevice diskdev 0 || {
echo "Unable to determine upgrade device"
return 1
}
sync
if export_bootdevice && export_partdevice diskdev 0; then
get_image "$1" | dd of=/dev/$diskdev bs=2M conv=fsync
if [ "$SAVE_PARTITIONS" = "1" ]; then
get_partitions "/dev/$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/$diskdev"
return 0
fi
#write uboot image
get_image "$@" | 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
case "$board" in
armada-385-turris-omnia)
fw_setenv openwrt_bootargs 'earlyprintk console=ttyS0,115200 root=/dev/mmcblk0p2 rootfstype=auto rootwait'