Re: [PATCH v2] arm: k3: Kconfig: Enable fTPM and RPMB support

[Francesco Dolcini <francesco@dolcini.it>]

Hello Shiva, Andrew

On Wed, May 13, 2026 at 06:36:40PM +0530, Shiva Tripathi wrote:
> It's not expected for all K3-platforms to build OP-TEE with RPMB
> support, some platforms lack eMMC entirely. fTPM is an optional
> configuration for users who need measured boot, disk encryption, or
> similar TPM related use-cases.
> 
> The Yocto SDK we release for K3 platforms includes the fTPM TA embedded
> in the OP-TEE, not sure if the same is true in your case.
> 
> RPMB provisioning is needed for full functionality, but even without it
> you shouldn't see these errors. Maybe the fTPM TA is missing from your
> OP-TEE build, or something similar is causing loader error.

Any comment on this? We are just integrating current meta-ti master with
latest master U-Boot, as I wrote a few days ago. There is nothing
special going on on our side, and your recent changes are introducing
this unexpected behavior.


On Wed, May 13, 2026 at 08:49:31AM -0500, Andrew Davis wrote:
> This makes me think we are at the stage in boot where EFI variables
> are trying to be persisted to some media, and when trying to use
> the fTPM for this it fails (as would be expected without RPMB).
> So this should be harmless, but why there is such a large error
> printout we need to investigate and try to make it less verbose.

Any chance TI can help on this?


Francesco