From patchwork Thu Mar 25 14:32:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 408809 Delivered-To: patch@linaro.org Received: by 2002:a02:8562:0:0:0:0:0 with SMTP id g89csp589946jai; Thu, 25 Mar 2021 07:34:02 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwPVVUr2LQGU7hKrwczUX6V860tj8fadrliuyuMaz6gvihZJgJaG+ORjg+/h0pdrwfLB5pl X-Received: by 2002:a17:907:2716:: with SMTP id w22mr9748235ejk.328.1616682842105; Thu, 25 Mar 2021 07:34:02 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1616682842; cv=none; d=google.com; s=arc-20160816; b=rYV+9E9uviG1ihfPKPD3fVlpyN3cT+EPCdJkfqCXuvkf6cFdb5fRDgWswHVwkwYApd DDmc3Ln7Qa2FlnhQWI/pSiaaJ/piI+TYt79RV+YFLOeoKcVDnW7SePD6Zww4GtGGegYn FslFvnm5UjAkSZ143pWfCmytRD3Th98MhlneVX2ER0OhUAuqhOdbKe8vc0IrD8LdGmRY 359xn+2JPE1euBXW07qNd1BtIqgTK/Bg8OvZWMaG1fP2iyvX+cDqaTwI6N/9Z4V7Bq6R TgLJPaHaW0Y4GH9e5Usy5ymSYlQogxTG/Qu9rmRbYoCtpl1tbijKVeIcf6F712XdmV1S y2Nw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=NTkhiVCGZMmndbzPiz/t2CQx7NXSy/ginbjxtwNFr8k=; b=BozruPmhaLvzv5SHnGnxxx/L9YOCtSgiP3p8N6do1GNpn+yJiMFIrpdWakURDp+ul6 nRHLRHo/s0AgQa3p7Ae3oR/nB9S1Q0d+Mw8s6TxFWIM+QpZ/jHXIshp7va0CaPkI5mvD nZcQ/3UfNOAQcpU4cpEqevX/xBTPRNh3kHZcRyTLhMtIJaGSdE/QNGSWLdWmk4wXlFJJ 1dGKGuvjoN+41axBtSVEPVlnkmxD/E/fWQG7hT7fdnC133FzapokudbJggM8TTRAGm1L 3XHunYae+bZT5Y2Kbqzl/5Kim1ruuHamsJPRLcNS3btWUhb1WRJ71RD6rU6irgl8swMG vJEg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id qu2si4448783ejb.373.2021.03.25.07.34.01; Thu, 25 Mar 2021 07:34:02 -0700 (PDT) Received-SPF: pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of devicetree-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230516AbhCYOd1 (ORCPT + 6 others); Thu, 25 Mar 2021 10:33:27 -0400 Received: from foss.arm.com ([217.140.110.172]:50980 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231492AbhCYOdG (ORCPT ); Thu, 25 Mar 2021 10:33:06 -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 8C227143D; Thu, 25 Mar 2021 07:33:05 -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 1F1853F792; Thu, 25 Mar 2021 07:33:04 -0700 (PDT) From: Sudeep Holla To: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Cc: Sudeep Holla , Trilok Soni , arve@android.com, Andrew Walbran , David Hartley , Achin Gupta , Jens Wiklander , Arunachalam Ganapathy , Marc Bonnici Subject: [PATCH v5 0/7] firmware: Add initial support for Arm FF-A Date: Thu, 25 Mar 2021 14:32:48 +0000 Message-Id: <20210325143255.1532452-1-sudeep.holla@arm.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi all, This is very basic implementation for in-kernel support for Arm FF-A specification. iArm 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) The series can be fetched from [2] -- Regards, Sudeep [1] https://developer.arm.com/documentation/den0077/latest [2] git://git.kerniel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git v5.12/v5_ffa v4->v5: - Fixed couple of comments in DT bindings - Moved to use native version of RXTX_MAP call, fixed vm_id param to RXTX_UNMAP, dropped couple of unused confusingly named macros (can be added back with correct name when we need to use them) v3->v4: - Added support to allow partitions to set 32bit only mode - Addressed all the comments from Jens Wiklander v2->v3: - Dropped hypervisor partitions and userspace support as it is no longer in the list of requirements - Moved away from ioctl style interface for in-kernel users as there is no need to keep in sync with userspace anymore - Some kerneldoc fixes as pointed out in earlier reviews v1->v2: - Moved userspace code to a separate unit, will move to separate module. Still working on minimizing initcall dependencies and exported functions to reuse some of the code. - Fixed couple of minor issues pointed out - Dropped ASYNC send message as I haven't been able to test Sudeep Holla (7): dt-bindings: Arm: Add Firmware Framework for Armv8-A (FF-A) binding arm64: smccc: Add support for SMCCCv1.2 input/output registers firmware: arm_ffa: Add initial FFA bus support for device enumeration firmware: arm_ffa: Add initial Arm FFA driver support firmware: arm_ffa: Add support for SMCCC as transport to FFA driver firmware: arm_ffa: Setup in-kernel users of FFA partitions firmware: arm_ffa: Add support for MEM_* interfaces .../devicetree/bindings/arm/arm,ffa.yaml | 57 ++ arch/arm64/kernel/asm-offsets.c | 4 + arch/arm64/kernel/smccc-call.S | 22 + drivers/firmware/Kconfig | 1 + drivers/firmware/Makefile | 1 + drivers/firmware/arm_ffa/Kconfig | 21 + drivers/firmware/arm_ffa/Makefile | 6 + drivers/firmware/arm_ffa/bus.c | 181 +++++ drivers/firmware/arm_ffa/common.h | 32 + drivers/firmware/arm_ffa/driver.c | 672 ++++++++++++++++++ drivers/firmware/arm_ffa/smccc.c | 54 ++ include/linux/arm-smccc.h | 50 ++ include/linux/arm_ffa.h | 266 +++++++ 13 files changed, 1367 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/arm,ffa.yaml create mode 100644 drivers/firmware/arm_ffa/Kconfig create mode 100644 drivers/firmware/arm_ffa/Makefile create mode 100644 drivers/firmware/arm_ffa/bus.c create mode 100644 drivers/firmware/arm_ffa/common.h create mode 100644 drivers/firmware/arm_ffa/driver.c create mode 100644 drivers/firmware/arm_ffa/smccc.c create mode 100644 include/linux/arm_ffa.h -- 2.25.1