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: 8661941 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7FFC6C0553 for ; Thu, 24 Mar 2016 14:53:06 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8E7EB203A0 for ; Thu, 24 Mar 2016 14:53:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A2672202AE for ; Thu, 24 Mar 2016 14:53:04 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aj6bM-0002Ad-Eb; Thu, 24 Mar 2016 14:51:08 +0000 Received: from mail-pf0-x234.google.com ([2607:f8b0:400e:c00::234]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aj6Yq-00077b-Tf for linux-arm-kernel@lists.infradead.org; Thu, 24 Mar 2016 14:48:37 +0000 Received: by mail-pf0-x234.google.com with SMTP id u190so59617045pfb.3 for ; Thu, 24 Mar 2016 07:48:11 -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=C3WA6AH02FNr2Hx3AGqhc5RQZjIrI+3RPfusCxcXyjfnB6xJCIgp57nncu3ojyb7+T OywgfBVcjtNasUEJyDZ1boC+Q2A6tYJQf0Y6+Hx4hK0YWP1lY8I1mlL5g5A3V1PE97wX tvDN+aS5Uch1QlBekwn9LMCHqA9Jsx0PFhtiZz0kK/hNb3s3L2Rr3T5iv8PzzBTCEUvt P0xJ3B8n5b8dGiifvv8xjcE/HHiW2FaO7nw9Zma4GIzN1y4wVMPcr0s+/RdgEIVyF9bD RI/zMAmylV/v5L3IxZpK0xlLIg479nZ/qUg+9VeyK/bFf3xQopINDphmuDRwRYrPXbOq WDZw== X-Gm-Message-State: AD7BkJJUzqFPPea1gZnIGBxCaKbbbnWLMO/Jrr0xUDuUdDtBlnK+0Ai6Ns3kl8vJHBWrC8Pg 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 Subject: [PATCH v7 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160324_074833_398291_8BBE06BB X-CRM114-Status: GOOD ( 11.32 ) X-Spam-Score: -2.7 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-efi@vger.kernel.org, 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 MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, T_RP_MATCHES_RCVD, 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.