Re: [PATCH 0/4] Add support for the TPM FF-A start method

Sudeep Holla
2025-02-11T10:12:50Z

On Mon, Feb 10, 2025 at 05:22:23PM -0600, Stuart Yoder wrote:
> These patches add support for the CRB FF-A start method defined
> in the TCG ACPI specification v1.4 and the FF-A ABI defined
> in the Arm TPM Service CRB over FF-A (DEN0138) specification.
> (https://developer.arm.com/documentation/den0138/latest/)
>
> FF-A is a messaging framework for Arm-based systems and in the
> context of the TPM driver is used to signal 'start' to a CRB-based
> TPM service which is hosted in an FF-A secure partition running in
> TrustZone.
>
> The first patch adds an FF-A driver to handle the FF-A messaging when
> communicating with a CRB-based TPM secure partition built on FF-A.
> The driver is probed when the TPM secure partition is discovered by
> the Linux FF-A infrastructure.
>

All the FF-A related changes look good to me.

Acked-by: Sudeep Holla <sudeep.holla@arm.com>

--
Regards,
Sudeep