Re: [PATCH v6 0/6] firmware: Add initial support for Arm FF-A

On Thu, May 20, 2021 at 03:20:46PM +0200, Jens Wiklander wrote:

On Wed, May 5, 2021 at 11:38 AM Sudeep Holla [off-list ref] wrote:

quoted

Hi all,

This is very basic implementation for in-kernel support for Arm FF-A
specification.

Arm Firmware Framework for Armv8-A specification[1] describes a software
architecture that provides mechanism to utilise the virtualization
extension to isolate software images and describes interfaces that
standardize communication between the various software images. This
includes communication between images in the Secure and Normal world.

The main idea here is to create FFA device to establish any communication
with a secure partition. This is currently tested with OPTEE(with changes
to OPTEE driver adding FFA as transport)

The series can be fetched from [2]

--
Regards,
Sudeep

[1] https://developer.arm.com/documentation/den0077/latest
[2] git://git.kerniel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git v5.13/ffa

Tested OK with my OP-TEE driver patches on top of 755e78187c4e
("firmware: arm_ffa: Add support for MEM_* interfaces"), which is the
latest on the v5.13/ffa branch above.

Tested-by: Jens Wiklander <redacted>

Thanks Jens for testing, much appreciated!

-- 
Regards,
Sudeep