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. /lib/functions.sh
# Prepare UBI devices for OpenWrt installation
# - rootfs (mtd22)
# - remove "ubi_rootfs" volume (rootfs on stock)
# - remove "fw_hash" volume (firmware hash)
# - user_property (mtd24)
# - remove "user_property_ubi" volume (user configuration)
# - remove "extra_property" volume (gzipped syslog)
buffalo_upgrade_prepare() {
local ubi_rootdev ubi_propdev
if ! ubi_rootdev="$(nand_attach_ubi rootfs)" || \
! ubi_propdev="$(nand_attach_ubi user_property)"; then
echo "failed to attach UBI volume \"rootfs\" or \"user_property\", rebooting..."
reboot -f
fi
ubirmvol /dev/$ubi_rootdev -N ubi_rootfs &> /dev/null || true
ubirmvol /dev/$ubi_rootdev -N fw_hash &> /dev/null || true
ubirmvol /dev/$ubi_propdev -N user_property_ubi &> /dev/null || true
ubirmvol /dev/$ubi_propdev -N extra_property &> /dev/null || true
}
# Re-create small dummy ubi_rootfs volume and update
# fw_hash volume to pass the checking by U-Boot
# - rootfs (mtd22)
# - re-create "ubi_rootfs" volume
# - re-create and update "fw_hash" volume
# - rootfs_recover (mtd23)
# - update "fw_hash" volume
buffalo_upgrade_optvol() {
local ubi_rootdev ubi_rcvrdev
local hashvol_root hashvol_rcvr
if ! ubi_rootdev="$(nand_attach_ubi rootfs)" || \
! ubi_rcvrdev="$(nand_attach_ubi rootfs_recover)"; then
echo "failed to attach UBI volume \"rootfs\" or \"rootfs_recover\", rebooting..."
reboot -f
fi
ubimkvol /dev/$ubi_rootdev -N ubi_rootfs -S 1
ubimkvol /dev/$ubi_rootdev -N fw_hash -S 1 -t static
if ! hashvol_root="$(nand_find_volume $ubi_rootdev fw_hash)" || \
! hashvol_rcvr="$(nand_find_volume $ubi_rcvrdev fw_hash)"; then
echo "\"fw_hash\" volume in \"rootfs\" or \"rootfs_recover\" not found, rebooting..."
reboot -f
fi
echo -n "00000000000000000000000000000000" > /tmp/dummyhash.txt
ubiupdatevol /dev/$hashvol_root /tmp/dummyhash.txt
ubiupdatevol /dev/$hashvol_rcvr /tmp/dummyhash.txt
}
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