[PATCH v4 0/7] firmware: Add initial support for Arm FF-A

Sudeep Holla sudeep.holla at arm.com
Tue Mar 23 09:50:45 GMT 2021


On Fri, Mar 19, 2021 at 08:56:47AM +0100, Jens Wiklander wrote:
> On Thu, Mar 18, 2021 at 3:09 PM Jens Wiklander
> <jens.wiklander at linaro.org> wrote:
> >
> > Hi Sudeep,
> >
> > On Tue, Mar 16, 2021 at 3:34 PM Sudeep Holla <sudeep.holla at arm.com> wrote:
> > >
> > > Hi Jens,
> > >
> > > On Fri, Feb 12, 2021 at 03:46:07PM +0000, Sudeep Holla wrote:
> > > > 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 v5.13
> >
> > I've tested this in a few of my setups and everything looks over all
> > fine, so please apply:
> > Tested-by: Jens Wiklander <jens.wiklander at 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



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