@mirzak ok thanks for the tip. I build mender image for sunxi but there is issue with booting kernel. I tried zImage + uImage both stop at
Starting kernel ... message.
I build image from meta-sunxi only (without mender) which use u-boot 2019.07 and board boots fine. I need to investigate why u-boot 2020.01 cannot start kernel.
I pushed few patches to overcome build issues for zeus and can be seen here