[PATCH v2 0/6] introduce Arm FF-A support

[Abdellatif El Khlifi]

On Fri, Apr 15, 2022 at 11:43:25AM -0400, Tom Rini wrote:
> On Fri, Apr 15, 2022 at 01:27:57PM +0100, abdellatif.elkhlifi at arm.com wrote:
> 
> > From: Abdellatif El Khlifi <abdellatif.elkhlifi at arm.com>
> > 
> > This patchset adds support for Arm FF-A (Arm Firmware Framework for Armv8-A v1.0).
> > 
> > FF-A support is generic by design and can be used by any Arm platform.
> > 
> > The features added are as follows:
> >     
> > 1/ FF-A bus driver
> > 2/ armffa command
> > 3/ FF-A Sandbox driver
> > 4/ FF-A Sandbox test cases
> > 5/ FF-A MM communication
> > 
> > The suggested design considers FF-A as a discoverable bus.
> > The Secure World is considered as one entity to communicate with using the FF-A bus.
> > FF-A communication is handled by one device and one instance (the bus).
> > This FF-A driver takes care of all the interactions between Normal world
> > and Secure World.
> > 
> > The Secure World firmware runs  under TrustZone HW (such as Optee). The same approach was followed in the
> > FF-A driver in Linux kernel (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/firmware/arm_ffa/bus.c?h=v5.15#n211))
> > 
> > Cc: Tom Rini <trini at konsulko.com>
> > Cc: Rob Herring <robh at kernel.org>
> > Cc: Ilias Apalodimas <ilias.apalodimas at linaro.org>
> > Cc: Achin Gupta <achin.gupta at arm.com>
> > Cc: Simon Glass <sjg at chromium.org>
> > Cc: Vishnu Banavath <vishnu.banavath at arm.com>
> 
> I don't see a changelog compared with v1.  Are any of the comments there
> addressed?  Thanks.
> 
> -- 
> Tom

Thanks Tom. I'll add a changelog for future versions.

The current Changelog:

Changelog:
===============
v2 (15 Apr 2022)
* Make FF-A bus discoverable (remove device tree support, bind and probe FF-A device using device_bind and device_probe)

v1 (29 Mar 2022)
* FF-A bus driver with device tree support
* armffa command
* FF-A Sandbox driver
* FF-A Sandbox test cases
* FF-A MM communication