From patchwork Mon Jun 1 09:45:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 199689 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9491C433E0 for ; Mon, 1 Jun 2020 09:45:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E5762074B for ; Mon, 1 Jun 2020 09:45:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726070AbgFAJpZ (ORCPT ); Mon, 1 Jun 2020 05:45:25 -0400 Received: from foss.arm.com ([217.140.110.172]:35650 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbgFAJpV (ORCPT ); Mon, 1 Jun 2020 05:45:21 -0400 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 99CE9101E; Mon, 1 Jun 2020 02:45:20 -0700 (PDT) Received: from usa.arm.com (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9CF803F305; Mon, 1 Jun 2020 02:45:19 -0700 (PDT) From: Sudeep Holla To: Will Deacon , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Sudeep Holla , linux-kernel@vger.kernel.org, Marc Zyngier Subject: [RFC PATCH 1/3] dt-bindings: Add ARM PSA FF binding for non-secure VM partitions Date: Mon, 1 Jun 2020 10:45:10 +0100 Message-Id: <20200601094512.50509-2-sudeep.holla@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200601094512.50509-1-sudeep.holla@arm.com> References: <20200601094512.50509-1-sudeep.holla@arm.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add devicetree bindings for a Arm PSA FF-A compliant non-secure partition at virtual interface(VMs). Signed-off-by: Sudeep Holla --- .../devicetree/bindings/arm/arm,psa-ffa.txt | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/arm,psa-ffa.txt diff --git a/Documentation/devicetree/bindings/arm/arm,psa-ffa.txt b/Documentation/devicetree/bindings/arm/arm,psa-ffa.txt new file mode 100644 index 000000000000..ee543fb5b397 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/arm,psa-ffa.txt @@ -0,0 +1,47 @@ +Arm Platform Security Architecture(PSA) Firmware Framework(FF) for Armv8-A +-------------------------------------------------------------------------- + +This binding is intended to define the interface the firmware framework +implementing the Non-secure partitions/endpoints(mostly VMs) as described +in ARM document ARM DEN 0077A ("Arm Platform Security Architecture +Firmware Framework for Arm v8-A") [0] + +In the case of a Non-secure virtual FF-A instance, the hypervisor +(e.g. Linux KVM) can use this binding to create and launch VM partitions. + +The SMCCC conduit available in the VM partition itself is used and hence +there is no explicit binding to specify the conduit used for PSA FFA +interface. + +Required properties: + +- compatible : Should be one of: + "arm,psa-ffa" + +- One or more child nodes, each describing an PSA FFA partition using the + following required properties: + + - compatible: Should be one of: + "arm,psa-ffa-partition" + + - uuid : The 128-bit UUID [2] of the service implemented by this partition, + represented as a string. + +[0] https://developer.arm.com/docs/den0077/latest +[1] https://tools.ietf.org/html/rfc4122 + +Example: + + #address-cells = <2>; + #size-cells = <2>; + + firmware { + psa-ffa { + compatible = "arm,psa-ffa"; + + partition0: psa_ffa_partition { + compatible = "arm,psa-ffa-partition"; + uuid = "12345678-9abc-def0-1234-56789abcdef0"; + }; + }; + };