From patchwork Thu Apr 7 12:03:30 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8772221 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 B544A9FC82 for ; Thu, 7 Apr 2016 12:17:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C5EB92020F for ; Thu, 7 Apr 2016 12:17:21 +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 C86B920222 for ; Thu, 7 Apr 2016 12:17:17 +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 1ao8qM-0005aP-2M; Thu, 07 Apr 2016 12:15:26 +0000 Received: from mail6.bemta6.messagelabs.com ([85.158.143.247]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ao8qK-0005Zs-Og for xen-devel@lists.xen.org; Thu, 07 Apr 2016 12:15:24 +0000 Received: from [85.158.143.35] by server-1.bemta-6.messagelabs.com id 8A/EA-18833-C5F46075; Thu, 07 Apr 2016 12:15:24 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrOIsWRWlGSWpSXmKPExsVSPpHPSTfany3 c4N9WTYslHxezODB6HN39mymAMYo1My8pvyKBNWPn2f1MBX1SFW1NtxkbGBvEuhi5OIQEzjBK vFiykBnC2Q3kdB1n7GLk5GAT0JX4uHEKexcjB4eIgIvEsc9eIDXMAleZJGY1tbCC1AgLhEt83 naEGcRmEVCR2NbbBmbzCnhKLN5+AsyWENCQWNk7gQXE5gSKt7VPBOsVEvCQ2NEyjwmiXlDi5M wnYDXMAhISB1+8gOpVlGhbf5INwpaUOLjiBgvIERICpxglvk58yg6RMJX4dXA92wRGwVlIZs1 CMmsBI9MqRvXi1KKy1CJdY72kosz0jJLcxMwcXUMDM73c1OLixPTUnMSkYr3k/NxNjMAAZQCC HYwd/5wOMUpyMCmJ8k53ZQsX4kvKT6nMSCzOiC8qzUktPsQow8GhJMEr7weUEyxKTU+tSMvMA cYKTFqCg0dJhFcNJM1bXJCYW5yZDpE6xagoJc572hcoIQCSyCjNg2uDxeclRlkpYV5GoEOEeA pSi3IzS1DlXzGKczAqCfN+BZnCk5lXAjf9FdBiJqDFF/jBFpckIqSkGhiV59vH9L76/fu6XoZ 3+I6m2SXrny4VaW12fLGBu3disbn1VcbYjMRDVt8nBh7f3Dbr0yf3p29+5HxaKTrhy9K9ZvP3 Lv369cFkTbld/Ba7V8ldkg9n1LvD9sqoXHXfva23V06LenCly99L/WaI72VpLs1JX5MWB969t nl7iX/R6ZlHVm0Nzn8kqcRSnJFoqMVcVJwIAOAi0KXKAgAA X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-6.tower-21.messagelabs.com!1460031321!8016760!1 X-Originating-IP: [119.145.14.66] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTE5LjE0NS4xNC42NiA9PiA4NTI3\n X-StarScan-Received: X-StarScan-Version: 8.28; banners=-,-,- X-VirusChecked: Checked Received: (qmail 5768 invoked from network); 7 Apr 2016 12:15:23 -0000 Received: from unknown (HELO szxga03-in.huawei.com) (119.145.14.66) by server-6.tower-21.messagelabs.com with RC4-SHA encrypted SMTP; 7 Apr 2016 12:15:23 -0000 Received: from 172.24.1.137 (EHLO SZXEML424-HUB.china.huawei.com) ([172.24.1.137]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BZL25457; Thu, 07 Apr 2016 20:04:29 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by SZXEML424-HUB.china.huawei.com (10.82.67.153) with Microsoft SMTP Server id 14.3.235.1; Thu, 7 Apr 2016 20:04:17 +0800 From: Shannon Zhao To: , Date: Thu, 7 Apr 2016 20:03:30 +0800 Message-ID: <1460030614-16112-14-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com> References: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090201.57064CCD.0116, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 19a000f70717b2ad4b5a691c0f8ee74f 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, xen-devel@lists.xen.org, julien.grall@arm.com, david.vrabel@citrix.com, peter.huangpeng@huawei.com, shannon.zhao@linaro.org Subject: [Xen-devel] [PATCH v11 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: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 From: Shannon Zhao 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 | 35 +++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt index 0f7b9c2..c9b9321 100644 --- a/Documentation/devicetree/bindings/arm/xen.txt +++ b/Documentation/devicetree/bindings/arm/xen.txt @@ -11,10 +11,32 @@ the following properties: memory where the grant table should be mapped to, using an HYPERVISOR_memory_op hypercall. The memory region is large enough to map the whole grant table (it is larger or equal to gnttab_max_grant_frames()). + This property is unnecessary when booting Dom0 using ACPI. - interrupts: the interrupt used by Xen to inject event notifications. A GIC node is also required. + This property is unnecessary when booting Dom0 using ACPI. +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 +44,17 @@ 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.