On Thu, 2019-08-01 at 09:36 +0300, Janne Karhunen wrote:

On Wed, Jul 31, 2019 at 5:23 PM Sumit Garg [off-list ref]
wrote:

quoted

quoted

I guess my wording was wrong, tried to say that physical TEEs in
the
wild vary massively hardware wise. Generalizing these things is
rough.

There are already well defined GlobalPlatform Standards to
generalize
the TEE interface. One of them is GlobalPlatform TEE Client API [1]
which provides the basis for this TEE interface.

I'm aware of it - I have implemented a large part of the GP TEE APIs
earlier (primarily the crypto functions). Does the TEE you work with
actually support GP properly? Can I take a look at the code?

AFAIK Sumit is working with the OP-TEE implementation, which can be
found on github: https://github.com/op-tee/optee_os

Regards,
Rouven