From patchwork Thu Jul 4 14:42:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anthony PERARD X-Patchwork-Id: 11031581 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 20CA1112C for ; Thu, 4 Jul 2019 14:59:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 11E2828AA4 for ; Thu, 4 Jul 2019 14:59:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0675A28AB8; Thu, 4 Jul 2019 14:59:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 743D128AB2 for ; Thu, 4 Jul 2019 14:59:07 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hj3BC-0005nA-OX; Thu, 04 Jul 2019 14:57:46 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hj3BB-0005mf-3u for xen-devel@lists.xenproject.org; Thu, 04 Jul 2019 14:57:45 +0000 X-Inumbo-ID: 119ecb3e-9e6c-11e9-9abb-f74e9424e95e Received: from esa2.hc3370-68.iphmx.com (unknown [216.71.145.153]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 119ecb3e-9e6c-11e9-9abb-f74e9424e95e; Thu, 04 Jul 2019 14:57:40 +0000 (UTC) Authentication-Results: esa2.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=anthony.perard@citrix.com; spf=Pass smtp.mailfrom=anthony.perard@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender authenticity information available from domain of anthony.perard@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="anthony.perard@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of anthony.perard@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="anthony.perard@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ~all" Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: qXky3MaPYhAU7QB2RFNuWs81jhFH2ycO3CKrQI7Yn0ZeCQ5frQ0IVxy5mXzl6Rlv3S+uZLWn4f IXoigpNYnsdObYGHu/VR0pH3yUO1D52boaJSeIPFBbfbxwAW+w2BvUanWe8stuG0DbjL6RFC1p Gof9xaZgig7zXVm/flmtVJegEfZfCUDiCXWrUTLS0QCirBvWc+sEQ4IaUu65PgzPnmBLZHJTur IEjtT3oF649zDneyXoUbCnHztVgh8RzS4bjv7oFqdGPDSOlXkG41yDAkP5TxuGm0nED4gjKtgT 3e8= X-SBRS: 2.7 X-MesageID: 2589134 X-Ironport-Server: esa2.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.63,451,1557201600"; d="scan'208";a="2589134" From: Anthony PERARD To: Date: Thu, 4 Jul 2019 15:42:11 +0100 Message-ID: <20190704144233.27968-14-anthony.perard@citrix.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190704144233.27968-1-anthony.perard@citrix.com> References: <20190704144233.27968-1-anthony.perard@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v3 13/35] OvmfPkg/Library/XenPlatformLib: New library X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Ard Biesheuvel , Jordan Justen , Julien Grall , Anthony PERARD , xen-devel@lists.xenproject.org, Laszlo Ersek Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP The purpose of XenPlatformLib is to regroup the few functions that are used in several places to detect if Xen is detected, and to get the XenInfo HOB. Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689 Signed-off-by: Anthony PERARD Reviewed-by: Laszlo Ersek --- Notes: v3: - use SPDX - add XenPlatformLib.h to [LibraryClasses] in OvmfPkg.dec - fix typos OvmfPkg/OvmfPkg.dec | 4 ++ OvmfPkg/OvmfXen.dsc | 1 + .../Library/XenPlatformLib/XenPlatformLib.inf | 33 +++++++++ OvmfPkg/Include/Library/XenPlatformLib.h | 53 ++++++++++++++ .../Library/XenPlatformLib/XenPlatformLib.c | 69 +++++++++++++++++++ 5 files changed, 160 insertions(+) create mode 100644 OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf create mode 100644 OvmfPkg/Include/Library/XenPlatformLib.h create mode 100644 OvmfPkg/Library/XenPlatformLib/XenPlatformLib.c diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec index c2a2ebfb95..04d5e29272 100644 --- a/OvmfPkg/OvmfPkg.dec +++ b/OvmfPkg/OvmfPkg.dec @@ -70,6 +70,10 @@ [LibraryClasses] # XenIoMmioLib|Include/Library/XenIoMmioLib.h + ## @libraryclass Get information about Xen + # + XenPlatformLib|Include/Library/XenPlatformLib.h + [Guids] gUefiOvmfPkgTokenSpaceGuid = {0x93bb96af, 0xb9f2, 0x4eb8, {0x94, 0x62, 0xe0, 0xba, 0x74, 0x56, 0x42, 0x36}} gEfiXenInfoGuid = {0xd3b46f3b, 0xd441, 0x1244, {0x9a, 0x12, 0x0, 0x12, 0x27, 0x3f, 0xc1, 0x4d}} diff --git a/OvmfPkg/OvmfXen.dsc b/OvmfPkg/OvmfXen.dsc index 6288394eb8..68d82da7aa 100644 --- a/OvmfPkg/OvmfXen.dsc +++ b/OvmfPkg/OvmfXen.dsc @@ -195,6 +195,7 @@ [LibraryClasses] SmbusLib|MdePkg/Library/BaseSmbusLibNull/BaseSmbusLibNull.inf OrderedCollectionLib|MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.inf XenHypercallLib|OvmfPkg/Library/XenHypercallLib/XenHypercallLib.inf + XenPlatformLib|OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf Tcg2PhysicalPresenceLib|OvmfPkg/Library/Tcg2PhysicalPresenceLibNull/DxeTcg2PhysicalPresenceLib.inf diff --git a/OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf b/OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf new file mode 100644 index 0000000000..32adb246d6 --- /dev/null +++ b/OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf @@ -0,0 +1,33 @@ +## @file +# Get information about Xen +# +# This library simply allow to find out if OVMF is running under Xen and +# allow to get more information when it is the case. +# +# Copyright (c) 2019, Citrix Systems, Inc. +# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = XenPlatformLib + FILE_GUID = DB54DBB7-8142-4EE5-9364-78C824B582EB + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = XenPlatformLib + +[Sources] + XenPlatformLib.c + +[Packages] + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + +[LibraryClasses] + HobLib + +[Guids] + gEfiXenInfoGuid diff --git a/OvmfPkg/Include/Library/XenPlatformLib.h b/OvmfPkg/Include/Library/XenPlatformLib.h new file mode 100644 index 0000000000..a8347602b7 --- /dev/null +++ b/OvmfPkg/Include/Library/XenPlatformLib.h @@ -0,0 +1,53 @@ +/** @file +* Get information about Xen +* +* This library simply allow to find out if OVMF is running under Xen and +* allow to get more information when it is the case. +* +* Copyright (c) 2019, Citrix Systems, Inc. +* +* SPDX-License-Identifier: BSD-2-Clause-Patent +* +**/ + +#ifndef _XEN_PLATFORM_LIB_H_ +#define _XEN_PLATFORM_LIB_H_ + +#include + +/** + This function detects if OVMF is running on Xen. + + @retval TRUE OVMF is running on Xen + @retval FALSE Xen has not been detected +**/ +BOOLEAN +EFIAPI +XenDetected ( + VOID + ); + +/** + This function detect if OVMF have started via the PVH entry point. + + @retval TRUE PVH entry point as been used + @retval FALSE OVMF have started via the HVM route +**/ +BOOLEAN +EFIAPI +XenPvhDetected ( + VOID + ); + +/** + This function return a pointer to the XenInfo HOB. + + @return XenInfo pointer or NULL if not available +**/ +EFI_XEN_INFO * +EFIAPI +XenGetInfoHOB ( + VOID + ); + +#endif diff --git a/OvmfPkg/Library/XenPlatformLib/XenPlatformLib.c b/OvmfPkg/Library/XenPlatformLib/XenPlatformLib.c new file mode 100644 index 0000000000..6f27cbffa8 --- /dev/null +++ b/OvmfPkg/Library/XenPlatformLib/XenPlatformLib.c @@ -0,0 +1,69 @@ +/** @file +* Get information about Xen +* +* This library simply allow to find out if OVMF is running under Xen and +* allow to get more information when it is the case. +* +* Copyright (c) 2019, Citrix Systems, Inc. +* +* SPDX-License-Identifier: BSD-2-Clause-Patent +* +**/ + +#include +#include +#include + +/** + This function return a pointer to the XenInfo HOB. + + @return XenInfo pointer or NULL if not available +**/ +EFI_XEN_INFO * +EFIAPI +XenGetInfoHOB ( + VOID + ) +{ + EFI_HOB_GUID_TYPE *GuidHob; + + GuidHob = GetFirstGuidHob (&gEfiXenInfoGuid); + if (GuidHob == NULL) { + return NULL; + } + + return (EFI_XEN_INFO *) GET_GUID_HOB_DATA (GuidHob); +} + +/** + This function detects if OVMF is running on Xen. + + @retval TRUE OVMF is running on Xen + @retval FALSE Xen has not been detected +**/ +BOOLEAN +EFIAPI +XenDetected ( + VOID + ) +{ + return (XenGetInfoHOB () != NULL); +} + +/** + This function detect if OVMF have started via the PVH entry point. + + @retval TRUE PVH entry point as been used + @retval FALSE OVMF have started via the HVM route +**/ +BOOLEAN +EFIAPI +XenPvhDetected ( + VOID + ) +{ + EFI_XEN_INFO *XenInfo; + + XenInfo = XenGetInfoHOB (); + return (XenInfo != NULL && XenInfo->RsdpPvh != NULL); +}