secured boot SAMA5D2

[ranran]

Hello,

I read "secured boot" documentation AN2748, and have a question:
It mentions zImage.cip but does not show in any step how to create it.

Is it required to create zImage.cip as part of the steps of secured boot ? (or is it only an option and not must)
How should it be created and when ?

Thank you,
ranran