diff --git a/scripts/om-fwupgradecfg-gen.sh b/scripts/om-fwupgradecfg-gen.sh
index 4960149f11f..38e8e3ff3fc 100755
--- a/scripts/om-fwupgradecfg-gen.sh
+++ b/scripts/om-fwupgradecfg-gen.sh
@@ -7,7 +7,7 @@
 #
 
 usage() {
-	echo "Usage: $0 <OM2P|OM5P|OM5PAC|MR600|MR900|MR1750|A60> <out file path> <kernel path> <rootfs path>"
+	echo "Usage: $0 <OM2P|OM5P|OM5PAC|MR600|MR900|MR1750|A60|A42> <out file path> <kernel path> <rootfs path>"
 	rm -f $CFG_OUT
 	exit 1
 }
@@ -25,12 +25,24 @@ case $CE_TYPE in
 		KERNEL_FLASH_ADDR=0x1c0000
 		FLASH_BS=262144
 		MD5_SKIP_BLOCKS=1
+		SIZE_FACTOR=1
+		SIZE_FORMAT="%d"
 		;;
 	OM5P|OM5PAC|MR600|MR900|MR1750|A60)
 		MAX_PART_SIZE=7808
 		KERNEL_FLASH_ADDR=0xb0000
 		FLASH_BS=65536
 		MD5_SKIP_BLOCKS=4
+		SIZE_FACTOR=1
+		SIZE_FORMAT="%d"
+		;;
+	A42)
+		MAX_PART_SIZE=15616
+		KERNEL_FLASH_ADDR=0x180000
+		FLASH_BS=65536
+		MD5_SKIP_BLOCKS=4
+		SIZE_FACTOR=1024
+		SIZE_FORMAT="0x%08x"
 		;;
 	*)
 		echo "Error - unsupported ce type: $CE_TYPE"
@@ -43,16 +55,18 @@ CHECK_BS=65536
 KERNEL_SIZE=$(stat -c%s "$KERNEL_PATH")
 KERNEL_MD5=$(mkhash md5 $KERNEL_PATH)
 KERNEL_SHA256=$(mkhash sha256 $KERNEL_PATH)
-KERNEL_PART_SIZE=$(size=$(($KERNEL_SIZE / $FLASH_BS)); [ $(($size * $FLASH_BS)) -lt $KERNEL_SIZE ] && size=$(($size + 1)); echo $(($size * $FLASH_BS / 1024)))
+KERNEL_PART_SIZE_KB=$(size=$(($KERNEL_SIZE / $FLASH_BS)); [ $(($size * $FLASH_BS)) -lt $KERNEL_SIZE ] && size=$(($size + 1)); echo $(($size * $FLASH_BS / 1024)))
+KERNEL_PART_SIZE=$(printf $SIZE_FORMAT $(($KERNEL_PART_SIZE_KB * $SIZE_FACTOR)))
 
-ROOTFS_FLASH_ADDR=$(addr=$(($KERNEL_FLASH_ADDR + ($KERNEL_PART_SIZE * 1024))); printf "0x%x" $addr)
+ROOTFS_FLASH_ADDR=$(addr=$(($KERNEL_FLASH_ADDR + ($KERNEL_PART_SIZE_KB * 1024))); printf "0x%x" $addr)
 ROOTFS_SIZE=$(stat -c%s "$ROOTFS_PATH")
 ROOTFS_CHECK_BLOCKS=$((($ROOTFS_SIZE / $CHECK_BS) - $MD5_SKIP_BLOCKS))
 ROOTFS_MD5=$(dd if=$ROOTFS_PATH bs=$CHECK_BS count=$ROOTFS_CHECK_BLOCKS 2>&- | mkhash md5)
 ROOTFS_MD5_FULL=$(mkhash md5 $ROOTFS_PATH)
 ROOTFS_SHA256_FULL=$(mkhash sha256 $ROOTFS_PATH)
 ROOTFS_CHECK_SIZE=$(printf '0x%x' $(($ROOTFS_CHECK_BLOCKS * $CHECK_BS)))
-ROOTFS_PART_SIZE=$(($MAX_PART_SIZE - $KERNEL_PART_SIZE))
+ROOTFS_PART_SIZE_KB=$(($MAX_PART_SIZE - $KERNEL_PART_SIZE_KB))
+ROOTFS_PART_SIZE=$(printf $SIZE_FORMAT $(($ROOTFS_PART_SIZE_KB * $SIZE_FACTOR)))
 
 cat << EOF > $CFG_OUT
 [vmlinux]