From patchwork Thu Mar 24 14:44:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8661771 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id F1A8B9F36E for ; Thu, 24 Mar 2016 14:50:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1197F201FE for ; Thu, 24 Mar 2016 14:50:38 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 25F1A203B4 for ; Thu, 24 Mar 2016 14:50:37 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1aj6YZ-0003eG-6l; Thu, 24 Mar 2016 14:48:15 +0000 Received: from mail6.bemta6.messagelabs.com ([85.158.143.247]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1aj6YY-0003dE-Is for xen-devel@lists.xen.org; Thu, 24 Mar 2016 14:48:14 +0000 Received: from [85.158.143.35] by server-3.bemta-6.messagelabs.com id 73/8D-07120-D2EF3F65; Thu, 24 Mar 2016 14:48:13 +0000 X-Env-Sender: shannon.zhao@linaro.org X-Msg-Ref: server-15.tower-21.messagelabs.com!1458830892!5719265!1 X-Originating-IP: [209.85.192.170] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 60562 invoked from network); 24 Mar 2016 14:48:13 -0000 Received: from mail-pf0-f170.google.com (HELO mail-pf0-f170.google.com) (209.85.192.170) by server-15.tower-21.messagelabs.com with AES128-GCM-SHA256 encrypted SMTP; 24 Mar 2016 14:48:13 -0000 Received: by mail-pf0-f170.google.com with SMTP id 4so59626279pfd.0 for ; Thu, 24 Mar 2016 07:48:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=XR6ymZ8RWWhOIaT+lup2UmB35hJzYksfwcdn9REV2Ss=; b=Y5rRKDkzeNzkjG/+Isb/rEXqGoh0Xg+Yziu4eFURTO7vdVjGOpMr1yWbbaN+NNxIhO P8JCOysIe7N182YbMEnvcc0a1MqEcTfmdEHHyi/IitzesYdj9ZOgL8OsUSfxsmsNiFMs YIA3VP6sGP3IyzTvS39B+N9lVGoYuqri7paS4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=XR6ymZ8RWWhOIaT+lup2UmB35hJzYksfwcdn9REV2Ss=; b=TrfKpCUQshoBrbm6VD+NDqNAIYtZGSmc2zIDzGusaMyP+YiitCWPcFKb86f18SnosM SP6eTIudy2Mwd2vOfoA4bvnKC7mnLZxhgV0LJFyPz7mxzhd1fabbLSG6D2O7zGXZ2qJj HUUFX6XEiDo4CZBooJ2EgSXNKtICRIK6GQJ8/e7NkbjZSWE0JMvi3ur3GBkhJE1+L6Gz zc0B/ZUPKCg+yrowX+1UKj9wVr0RFT/4n5PLn6ojEKKKQNdZgyMK2tOn/wkzinHaSHyx 0XYJgLVwKfwGGaGBv4s7nmzTrsUTpq/GzgQd6c539SJ8glWxv6Gwf2JOPrGpShV0hO8X upxQ== X-Gm-Message-State: AD7BkJJkDqfTSXwvPYrynw+RhJiqRT9Kk4PMpHjdKlAyqCFvC8RQWf0iJhji1oAXq6BRFX9v X-Received: by 10.98.72.213 with SMTP id q82mr13458811pfi.164.1458830890953; Thu, 24 Mar 2016 07:48:10 -0700 (PDT) Received: from localhost.localdomain ([104.238.45.135]) by smtp.gmail.com with ESMTPSA id lq10sm10780673pab.36.2016.03.24.07.47.58 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 24 Mar 2016 07:48:09 -0700 (PDT) From: Shannon Zhao To: linux-arm-kernel@lists.infradead.org, stefano.stabellini@citrix.com, david.vrabel@citrix.com Date: Thu, 24 Mar 2016 22:44:32 +0800 Message-Id: <1458830676-27075-14-git-send-email-shannon.zhao@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1458830676-27075-1-git-send-email-shannon.zhao@linaro.org> References: <1458830676-27075-1-git-send-email-shannon.zhao@linaro.org> Cc: devicetree@vger.kernel.org, linux-efi@vger.kernel.org, Rob Herring , catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, peter.huangpeng@huawei.com, julien.grall@arm.com, shannon.zhao@linaro.org, zhaoshenglong@huawei.com, xen-devel@lists.xen.org Subject: [Xen-devel] [PATCH v7 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a "uefi" node under /hypervisor node in FDT, then Linux kernel could scan this to get the UEFI information. CC: Rob Herring Signed-off-by: Shannon Zhao Acked-by: Rob Herring Reviewed-by: Stefano Stabellini --- Documentation/devicetree/bindings/arm/xen.txt | 33 +++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt index 0f7b9c2..6f83f76 100644 --- a/Documentation/devicetree/bindings/arm/xen.txt +++ b/Documentation/devicetree/bindings/arm/xen.txt @@ -15,6 +15,26 @@ the following properties: - interrupts: the interrupt used by Xen to inject event notifications. A GIC node is also required. +To support UEFI on Xen ARM virtual platforms, Xen populates the FDT "uefi" node +under /hypervisor with following parameters: + +________________________________________________________________________________ +Name | Size | Description +================================================================================ +xen,uefi-system-table | 64-bit | Guest physical address of the UEFI System + | | Table. +-------------------------------------------------------------------------------- +xen,uefi-mmap-start | 64-bit | Guest physical address of the UEFI memory + | | map. +-------------------------------------------------------------------------------- +xen,uefi-mmap-size | 32-bit | Size in bytes of the UEFI memory map + | | pointed to in previous entry. +-------------------------------------------------------------------------------- +xen,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI + | | memory map. +-------------------------------------------------------------------------------- +xen,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format. +-------------------------------------------------------------------------------- Example (assuming #address-cells = <2> and #size-cells = <2>): @@ -22,4 +42,17 @@ hypervisor { compatible = "xen,xen-4.3", "xen,xen"; reg = <0 0xb0000000 0 0x20000>; interrupts = <1 15 0xf08>; + uefi { + xen,uefi-system-table = <0xXXXXXXXX>; + xen,uefi-mmap-start = <0xXXXXXXXX>; + xen,uefi-mmap-size = <0xXXXXXXXX>; + xen,uefi-mmap-desc-size = <0xXXXXXXXX>; + xen,uefi-mmap-desc-ver = <0xXXXXXXXX>; + }; }; + +The format and meaning of the "xen,uefi-*" parameters are similar to those in +Documentation/arm/uefi.txt, which are provided by the regular UEFI stub. However +they differ because they are provided by the Xen hypervisor, together with a set +of UEFI runtime services implemented via hypercalls, see +http://xenbits.xen.org/docs/unstable/hypercall/x86_64/include,public,platform.h.html.