Initial commit

target/linux/mediatek/mt7623/base-files/lib/upgrade/platform.sh

@@ -0,0 +1,197 @@
+
+REQUIRE_IMAGE_METADATA=1
+RAMFS_COPY_BIN='blockdev'
+
+# Full system upgrade including preloader for MediaTek SoCs on eMMC or SD
+mtk_mmc_full_upgrade() {
+	local diskdev partdev diff oldrecovery
+
+	if grep -q root=/dev/mmcblk0p2 /proc/cmdline; then
+	    oldrecovery=1
+	else
+	    oldrecovery=2
+	fi
+
+	export_bootdevice && export_partdevice diskdev 0 || {
+		echo "Unable to determine upgrade device"
+		return 1
+	}
+
+	#Keep the persistent random mac address (if it exists)
+	mkdir -p /tmp/recovery
+	export_partdevice recoverydev $oldrecovery
+	if mount -o rw,noatime "/dev/$recoverydev" -tvfat /tmp/recovery; then
+		[ -f "/tmp/recovery/mac_addr" ] && cp /tmp/recovery/mac_addr /tmp/
+		umount /tmp/recovery
+	fi
+	sync
+
+	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/$diskdev" bs=4096 conv=fsync
+
+		# Separate removal and addition is necessary; otherwise, partition 1
+		# will be missing if it overlaps with the old partition 2
+		partx -d - "/dev/$diskdev"
+		partx -a - "/dev/$diskdev"
+	else
+		# iterate over each partition from the image and write it to the boot disk
+		while read part start size; do
+			part="$(($part - 2))"
+			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
+
+	export_partdevice recoverydev 2
+	if mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery; then
+		[ -f "/tmp/mac_addr" ] && cp /tmp/mac_addr /tmp/recovery
+
+		if [ "$diskdev" = "mmcblk0" -a -r /tmp/recovery/eMMCboot.bin ]; then
+			echo 0 > /sys/block/mmcblk0boot0/force_ro
+			dd if=/tmp/recovery/eMMCboot.bin of=/dev/mmcblk0boot0 conv=fsync
+			sync
+			echo 1 > /sys/block/mmcblk0boot0/force_ro
+		fi
+		sync
+		umount /tmp/recovery
+	fi
+}
+
+platform_do_upgrade() {
+	local board=$(board_name)
+
+	case "$board" in
+	bananapi,bpi-r2)
+		export_bootdevice
+		export_partdevice rootdev 0
+		export_partdevice fitpart 3
+		[ "$fitpart" ] || return 1
+		dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null
+		blockdev --rereadpt /dev/$rootdev
+		get_image "$1" | dd of=/dev/$fitpart
+		blockdev --rereadpt /dev/$rootdev
+		local datapart=$(get_partition_by_name $rootdev "rootfs_data")
+		[ "$datapart" ] || return 0
+		dd if=/dev/zero of=/dev/$datapart bs=4096 count=1 2>/dev/null
+		echo $datapart > /tmp/sysupgrade.datapart
+		;;
+
+	unielec,u7623-02-emmc-512m)
+		local magic="$(get_magic_long "$1")"
+		if [ "$magic" = "53444d4d" ]; then
+			mtk_mmc_full_upgrade "$1"
+		else # Old partial image starting with uImage
+			# Keep the persistent random mac address (if it exists)
+			recoverydev=mmcblk0p1
+			mkdir -p /tmp/recovery
+			mount -o rw,noatime /dev/$recoverydev /tmp/recovery
+			[ -f "/tmp/recovery/mac_addr" ] && \
+				mv -f /tmp/recovery/mac_addr /tmp/
+			umount /tmp/recovery
+
+			# 1310720 is the offset in bytes from the start of eMMC and to
+			# the location of the kernel (2560 512 byte sectors)
+			get_image "$1" | dd of=/dev/mmcblk0 bs=1310720 seek=1 conv=fsync
+
+			mount -o rw,noatime /dev/$recoverydev /tmp/recovery
+			[ -f "/tmp/mac_addr" ] && mv -f /tmp/mac_addr /tmp/recovery
+			sync
+			umount /tmp/recovery
+		fi
+		;;
+	*)
+		default_do_upgrade "$1"
+		;;
+	esac
+}
+
+PART_NAME=firmware
+
+platform_check_image() {
+	local board=$(board_name)
+	local magic="$(get_magic_long "$1")"
+	local diskdev partdev diff
+
+	[ "$#" -gt 1 ] && return 1
+
+	case "$board" in
+	bananapi,bpi-r2)
+		[ "$magic" != "d00dfeed" ] && {
+			echo "Invalid image type."
+			return 1
+		}
+		;;
+	unielec,u7623-02-emmc-512m)
+		# Can always upgrade to the new-style full image
+		[ "$magic" = "53444d4d" ] && return 0
+
+		# Legacy uImage directly at 0xA00 on the eMMC.
+		[ "$magic" != "27051956" ] && {
+			echo "Invalid image type."
+			return 1
+		}
+		rootpart=$(cat /proc/cmdline)
+		rootpart="${rootpart##*root=}"
+		rootpart="${rootpart%% *}"
+		[ "$rootpart" != "/dev/mmcblk0p2" ] && {
+			echo "Cannot downgrade to legacy image."
+			return 1
+		}
+		return 0
+		;;
+	*)
+		echo "Sysupgrade is not supported on your board yet."
+		return 1
+		;;
+	esac
+
+	return 0
+}
+
+platform_copy_config_mmc() {
+	[ -e "$UPGRADE_BACKUP" ] || return
+	local datapart=$(cat /tmp/sysupgrade.datapart)
+	[ "$datapart" ] || echo "no rootfs_data partition, cannot keep configuration." >&2
+	dd if="$UPGRADE_BACKUP" of=/dev/$datapart
+	sync
+}
+
+platform_copy_config() {
+	case "$(board_name)" in
+	bananapi,bpi-r2)
+		platform_copy_config_mmc
+		;;
+	unielec,u7623-02-emmc-512m)
+		# platform_do_upgrade() will have set $recoverydev
+		if [ -n "$recoverydev" ]; then
+			mkdir -p /tmp/recovery
+			mount -o rw,noatime "/dev/$recoverydev" -t vfat /tmp/recovery
+			cp -af "$UPGRADE_BACKUP" "/tmp/recovery/$BACKUP_FILE"
+			sync
+			umount /tmp/recovery
+		fi
+		;;
+	esac
+}