Request materials or BSP for the FDE, FBE related to the hikey960 board.

While working on the encryption project, we are trying to develop a GP-based encryption module.

In particular, we are planning to develop FDE and FBE based on OP-TEE.
If I buy hikey960 board, can I get technical data related to FDE and FBE?
And I want to study after setting up a QEMU-based development environment and installing FDE and FBE based on Linux or Android, so can I get related materials?
I’m requesting information on how to purchase hikey960, FDE, and FBE.

Especially, if there is a manual for installing FDE and FBE, I would like to receive support.

Thank you