diff --git a/target/linux/mediatek/image/gen_banana_pi_img.sh b/target/linux/mediatek/image/gen_banana_pi_img.sh
index d46e92fa42..611a17edff 100755
--- a/target/linux/mediatek/image/gen_banana_pi_img.sh
+++ b/target/linux/mediatek/image/gen_banana_pi_img.sh
@@ -79,7 +79,7 @@
 # with the preloader loading 512KiB of U-Boot starting at 0x50000.
 
 usage() {
-    echo "SYNTAX: $0 sd <file> <preloader image> <u-boot image> <bootfs image> <rootfs image> <bootfs size> <rootfs size>"
+    echo "SYNTAX: $0 sd <file> <preloader image> <u-boot image> <u-boot offset> <bootfs image> <rootfs image> <bootfs size> <rootfs size>"
     echo " OR:    $0 emmc <file> <preloader image>"
     exit 1
 }
@@ -96,20 +96,21 @@ BRLYT="BRLYT\x00\x00\x00\x01\x00\x00\x00\x00\x08\x00\x00\
 
 case $1 in
  sd)
-	[ $# -eq 8 ] || usage
+	[ $# -eq 9 ] || usage
 	OUTPUT="$2"
 	PRELOADER="$3"
 	UBOOT="$4"
-	BOOTFS="$5"
-	ROOTFS="$6"
-	BOOTFSSIZE="$7"
-	ROOTFSSIZE="$8"
+	UBOOTOFS="$5"
+	BOOTFS="$6"
+	ROOTFS="$7"
+	BOOTFSSIZE="$8"
+	ROOTFSSIZE="$9"
 
 	head=4
 	sect=63
 
 	set $(ptgen -o $OUTPUT -h $head -s $sect -a 0 -l 1024 \
-		    -t 41 -p 512k@320k \
+		    -t 41 -p 512k@${UBOOTOFS} \
 		    -t c -p ${BOOTFSSIZE}M \
 		    -t 83 -p ${ROOTFSSIZE}M )
 
@@ -123,7 +124,11 @@ case $1 in
 	echo -en "${SDMMC_BOOT}" | dd bs=1 of="${OUTPUT}" seek=0   conv=notrunc
 	echo -en "${BRLYT}"      | dd bs=1 of="${OUTPUT}" seek=512 conv=notrunc
 
-	dd bs=1024 if="${PRELOADER}" of="${OUTPUT}" seek="${PRELOADER_OFFSET}" conv=notrunc
+	# For eMMC-only boards like U7623 the preloader doesn't need to be included in the
+	# main image as it's only ever needed in the eMMC boot partition.
+	if [ -r ${PRELOADER} ]; then
+	    dd bs=1024 if="${PRELOADER}" of="${OUTPUT}" seek="${PRELOADER_OFFSET}" conv=notrunc
+	fi
 	dd bs=512  if="${UBOOT}"     of="${OUTPUT}" seek="${UBOOT_OFFSET}"     conv=notrunc
 	dd bs=512  if="${BOOTFS}"    of="${OUTPUT}" seek="${BOOTFS_OFFSET}"    conv=notrunc
 	dd bs=512  if="${ROOTFS}"    of="${OUTPUT}" seek="${ROOTFS_OFFSET}"    conv=notrunc
diff --git a/target/linux/mediatek/image/mt7623.mk b/target/linux/mediatek/image/mt7623.mk
index ef14969029..1061a0d281 100644
--- a/target/linux/mediatek/image/mt7623.mk
+++ b/target/linux/mediatek/image/mt7623.mk
@@ -1,5 +1,5 @@
 KERNEL_LOADADDR := 0x80008000
-DEVICE_VARS += UBOOT_TARGET
+DEVICE_VARS += UBOOT_TARGET UBOOT_OFFSET UBOOT_ENVSIZE
 
 ifneq ($(CONFIG_BANANA_PI_BOOT_PARTSIZE),)
 BOOTFS_BLOCK_SIZE := 1024
@@ -10,16 +10,18 @@ define Build/banana-pi-sdcard
 	rm -f $@.boot
 	mkfs.fat -C $@.boot $(BOOTFS_BLOCKS)
 
-	./gen_banana_pi_img.sh emmc $@.emmc \
-		$(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-preloader.bin
-
-	mkenvimage -s 0x2000 -o $(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-uboot.env $(UBOOT_TARGET)-uEnv.txt
+	if [ -r $(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-preloader.bin ]; then \
+		./gen_banana_pi_img.sh emmc $@.emmc \
+			$(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-preloader.bin; \
+		mcopy -i $@.boot $@.emmc ::eMMCboot.bin; \
+	fi
+	mkenvimage -s $(UBOOT_ENVSIZE) -o $(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-uboot.env $(UBOOT_TARGET)-uEnv.txt
 	mcopy -i $@.boot $(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-uboot.env ::uboot.env
 	mcopy -i $@.boot $(IMAGE_KERNEL) ::uImage
-	mcopy -i $@.boot $@.emmc ::eMMCboot.bin
 	./gen_banana_pi_img.sh sd $@ \
 		$(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-preloader.bin \
-		$(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-u-boot.bin \
+		$(STAGING_DIR_IMAGE)/$(UBOOT_TARGET)-u-boot*.bin \
+		$(UBOOT_OFFSET) \
 		$@.boot \
 		$(IMAGE_ROOTFS) \
 		$(CONFIG_BANANA_PI_BOOT_PARTSIZE) \
@@ -41,6 +43,8 @@ define Device/bpi_bananapi-r2
   DEVICE_DTS := mt7623n-bananapi-bpi-r2
   DEVICE_PACKAGES := kmod-fs-vfat kmod-nls-cp437 kmod-nls-iso8859-1 kmod-mmc \
 	mkf2fs e2fsprogs kmod-usb-ohci kmod-usb2 kmod-usb3 kmod-ata-ahci-mtk
+  UBOOT_ENVSIZE := 0x2000
+  UBOOT_OFFSET := 320k
   UBOOT_TARGET := mt7623n_bpir2
   IMAGES := img.gz
   IMAGE/img.gz := banana-pi-sdcard | gzip | append-metadata