optee api support

[sunshine-lcc]

I need to use optee api provide by edk2 in applications, but it seems like no any suitable way. How can I use optee in UEFI applications?

[nicholasbishop]

Hi, right now there's no OP-TEE support in uefi-rs. I hadn't heard of OP-TEE previously, here are some links I looked at to better understand:

• Main website: https://www.op-tee.org/
• Documentation: https://optee.readthedocs.io/en/latest/
• Documentation about building a Rust client: https://optee.readthedocs.io/en/latest/building/optee_with_rust.html
• edk2's OP-TEE API: https://github.com/tianocore/edk2/blob/master/ArmPkg/Include/Library/OpteeLib.h
• And edk2's implementation of the API: https://github.com/tianocore/edk2/blob/master/ArmPkg/Library/OpteeLib/Optee.c

Based on all this, I'm not actually sure if specific support for OP-TEE in uefi-rs is needed, it seems rather like a complementary technology that can be accessed within a UEFI environment, but not directly through the UEFI API (e.g. there's no "UEFI OP-TEE protocol" as far as I can see). Hopefully the Rust examples in the Teaclave TrustZone SDK can be helpful here.

Does that make sense? Please feel free to correct me since I've really only just learned about OP-TEE :)

[nicholasbishop]

Closing based on the above comment, but please feel free to reopen if I missed something above.