Re: [PATCH v4 0/7] firmware: Add initial support for Arm FF-A
From: Sudeep Holla <hidden>
Date: 2021-03-23 09:51:38
Also in:
linux-arm-kernel
On Fri, Mar 19, 2021 at 08:56:47AM +0100, Jens Wiklander wrote:
On Thu, Mar 18, 2021 at 3:09 PM Jens Wiklander [off-list ref] wrote:quoted
Hi Sudeep, On Tue, Mar 16, 2021 at 3:34 PM Sudeep Holla [off-list ref] wrote:quoted
Hi Jens, On Fri, Feb 12, 2021 at 03:46:07PM +0000, Sudeep Holla 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)Since you reviewed the last version, it would be helpful if you provide Reviewed-by or Tested-by if you happy with this version. I would like to get this initial version merged for v5.13I've tested this in a few of my setups and everything looks over all fine, so please apply: Tested-by: Jens Wiklander <jens.wiklander@linaro.org> I'm also double checking the details of the patches for some further feedback. Stay tuned.I'm done reviewing this patchset. I had a comment about a TODO in "arm64: smccc: Add support for SMCCCv1.2 input/output registers", I suppose it isn't very urgent with a 32-bit implementation.
Thanks again, I will reply to that seperately. But yes, it is not urgent as of now. -- Regards, Sudeep