Mender is not creating partitions in iMX6 UL

There are lots of .wks files in the directory, as below:

~/warrior_yocto/mender_build/tmp/work/imx6ulevk-fslc-linux-gnueabi/core-image-base/1.0-r0/mender-uefiimg.wks
~/warrior_yocto/mender_build/tmp/work/imx6ulevk-fslc-linux-gnueabi/core-image-base/1.0-r0/imx-uboot-spl-bootpart.wks
~/warrior_yocto/mender_build/tmp/work/imx6ulevk-fslc-linux-gnueabi/core-image-base/1.0-r0/mender-sdimg.wks
~/warrior_yocto/sources/poky/meta/recipes-core/ovmf/ovmf/ovmf-shell-image.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/mkefidisk.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/directdisk-multi-rootfs.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/directdisk.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/mkhybridiso.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/directdisk-bootloader-config.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/qemux86-directdisk.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/sdimage-bootpart.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/systemd-bootdisk.wks
~/warrior_yocto/sources/poky/scripts/lib/wic/canned-wks/directdisk-gpt.wks
~/warrior_yocto/sources/poky/meta-selftest/recipes-test/images/wic-image-minimal.wks
~/warrior_yocto/sources/poky/meta-selftest/wic/wictestdisk.wks
~/warrior_yocto/sources/poky/meta-yocto-bsp/wic/mpc8315e-rdb.wks
~/warrior_yocto/sources/poky/meta-yocto-bsp/wic/beaglebone-yocto.wks
~/warrior_yocto/sources/poky/meta-yocto-bsp/wic/edgerouter.wks
~/warrior_yocto/sources/poky/meta-yocto-bsp/wic/genericx86.wks
~/warrior_yocto/sources/meta-freescale/wic/imx-uboot.wks

And I’m sharing the contents of ~/warrior_yocto/sources/meta-freescale/wic/imx-uboot.wks as I thought it would be the appropriate one:

# short-description: Create SD card image with a boot partition
# long-description:
# Create an image that can be written onto a SD card using dd for use
# with i.MX SoC family
# It uses u-boot
#
# The disk layout used is:
#  - --------- --------------
# | | u-boot  |    rootfs    |
#  - --------- --------------
# ^ ^         ^              ^
# | |         |              |
# 0 1kiB    4MiB + rootfs + IMAGE_EXTRA_SPACE (default 10MiB)
#
part u-boot --source rawcopy --sourceparams="file=u-boot.imx" --ondisk mmcblk --no-table --align 1
part / --source rootfs --ondisk mmcblk --fstype=ext4 --label root --align 4096

bootloader --ptable msdos

Kindly walk me through the next step if this is the one, or specify the file name so that I could share that with you.