From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5BB13C433EF for ; Mon, 9 May 2022 10:55:29 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 5B2E983E4C; Mon, 9 May 2022 12:55:26 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id D1C6183DE0; Mon, 9 May 2022 12:55:24 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by phobos.denx.de (Postfix) with ESMTP id 69A4783D5D for ; Mon, 9 May 2022 12:55:20 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=abdellatif.elkhlifi@arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D60941480; Mon, 9 May 2022 03:55:19 -0700 (PDT) Received: from e121910.cambridge.arm.com (unknown [10.57.0.187]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 656D43F66F; Mon, 9 May 2022 03:55:17 -0700 (PDT) Date: Mon, 9 May 2022 11:55:14 +0100 From: Abdellatif El Khlifi To: Tom Rini Cc: u-boot@lists.denx.de, sudeep.holla@arm.com, achin.gupta@arm.com, ilias.apalodimas@linaro.org, robh@kernel.org, sjg@chromium.org, vishnu.banavath@arm.com, xueliang.zhong@arm.com, nd@arm.com Subject: Re: [PATCH v2 0/6] introduce Arm FF-A support Message-ID: <20220509105514.GA4201@e121910.cambridge.arm.com> References: <20220413172943.rvvxrsl5ukxy7xkg@bogus> <20220415122803.16666-1-abdellatif.elkhlifi@arm.com> <20220415154325.GY14282@bill-the-cat> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220415154325.GY14282@bill-the-cat> User-Agent: Mutt/1.9.4 (2018-02-28) 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 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@arm.com wrote: > > > From: Abdellatif El Khlifi > > > > 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 > > Cc: Rob Herring > > Cc: Ilias Apalodimas > > Cc: Achin Gupta > > Cc: Simon Glass > > Cc: Vishnu Banavath > > 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