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[2603:6081:7b01:cbda:2ef0:5dff:fedb:a8ba]) by smtp.gmail.com with ESMTPSA id t19-20020ac85893000000b002e1afa26591sm15508013qta.52.2022.04.06.12.47.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Apr 2022 12:47:13 -0700 (PDT) Date: Wed, 6 Apr 2022 15:47:11 -0400 From: Tom Rini To: abdellatif.elkhlifi@arm.com Cc: u-boot@lists.denx.de, nd@arm.com Subject: Re: [PATCH 0/6] introduce Arm FF-A support Message-ID: <20220406194711.GN14282@bill-the-cat> References: <20220329151659.16894-1-abdellatif.elkhlifi@arm.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="citGix+cyBYE+lqp" Content-Disposition: inline In-Reply-To: <20220329151659.16894-1-abdellatif.elkhlifi@arm.com> X-Clacks-Overhead: GNU Terry Pratchett X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.5 at phobos.denx.de X-Virus-Status: Clean --citGix+cyBYE+lqp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 29, 2022 at 04:16:53PM +0100, abdellatif.elkhlifi@arm.com wrote: > From: Abdellatif El Khlifi >=20 > This patchset adds support for Arm FF-A (Arm Firmware Framework for Armv8= -A v1.0). >=20 > FF-A support is generic by design and can be used by any Arm platform. >=20 > The features added are as follows: > =20 > 1/ FF-A device driver > 2/ armffa command > 3/ FF-A Sandbox driver > 4/ FF-A Sandbox test cases > 5/ FF-A MM communication >=20 >=20 > The suggested design sees FF-A as a data bus allowing data exchange with = the firmware > running under TrustZone HW (such as Optee). The same approach was followe= d 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=3Dv5.15#n211)) >=20 > u-boot boards using FF-A can provide a device tree node in a -u-bo= ot.dtsi file. > Since the node can not be hosted in Linux device tree, we suggest using u= -boot device tree. Why can't the node be in the upstream tree? It should be, so that it can be shared between all users. Especially since there's in-Linux users? --=20 Tom --citGix+cyBYE+lqp Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEGjx/cOCPqxcHgJu/FHw5/5Y0tywFAmJN7j8ACgkQFHw5/5Y0 tyxo/gv/R+A/0s+wtVozK0LBfms3vuuT/LPSBtN+/wiAoGP4LK/VhokCmAlCOyM2 22lN0ENx7xgJ3TneF0vl2EoWTfa5gO1jDVXknD+fftUgWF7CD0TvUPl34YacHuQe sIV6uC3Hde6C9sqZhIyyyJ7FUFjyUHCb3D/QGsMHoJ3hBXOj4qFybp7IfWbsIhKZ qpQA/vfNJfvevSqjYjY2uVwdb6ewGoggIm8eAsT3rTgD9hRXjxfwqe/b49gKGtO3 y5SXTcJc60xK3lX8m62c67oWLxFClN3XfRH6vlR/chCFfupOiVtHMYeM5CjNEN9T PvO+onrS95uw2MA0mVlwBkNhrmoyDJypNqiGarfkG295TJwhI1fJutr2Gkx7zY+q Hq0fzAAoF96wq+byuLeeFFwOZ9rngt6irYUBluPj0dNcUeDEUWrt3Ebp758s95ob NHh0AEerVKeCkmiz4GpUYiDn4PSSV/OJmlLtpptn6QeBFzv1GwGfHzwTAVLj2ech TWARPi/q =onsV -----END PGP SIGNATURE----- --citGix+cyBYE+lqp--