In our case, we are using Colibri iMX6ULL 512MB IT (044).
Okay, so you are using another variant other than the 1GB eMMC. Unfortunately then this meta-layer will probably not work for this hardware. The signing process for raw NAND versus eMMC does differ I believe.
Is there any tweak that can make ‘meta-toradex-security’ layer work for our module?
Support would need to be added to the meta-layer, which is something we don’t have planned in the near-future. I’m not sure if it would be a simple tweak or not, it would require further investigation and testing.
We basically need to get the U-Boot signed, either using the layer or the tool externally. What can be the solution?
This thread is probably the most comprehensive discussion regarding HAB on the raw NAND imx6ull: HAB u-boot cannot boot
It’s a bit old, but there hasn’t been much more recent efforts since the raw NAND imx6ull is not often used for such use-cases.
Best Regards,
Jeremias