From nobody Mon Feb 9 19:04:33 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+98998+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+98998+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1674613518; cv=none; d=zohomail.com; s=zohoarc; b=dnU+zcXsP8/nd50Q1iHZmpX2VWL60xgWTeqU4qpx7lr0T1RUSEvMx6fjIYUt39FZNAIuG9GWXg51TYIHAiSlFDZ8L7Q/M0Z05038FFv9nm8N9y2RwUnVWymptzig7mW6ABhaaXpDX5r2TYUz8EEyMaN52nzlqQMlGmBm8vdO5WU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1674613518; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=Z47qao+LmFWkLwbe3k8eyxgYYQXWmo8Wc0JKY0eygys=; b=JA8HqD9LS54wZmauggayrmVs9fWbHCdDEb3lNHWTZaCw9yIqsFh3oxpE/jhQsebAxWoqqpB2NUaI2QMOFG/3s2TbzRPyHfQaRYWXfIa7UudqIwEZ141nk9IgCd6qk6t6EBab5v6rT3OeiAjhUtuE92r+wdXX1jEzDA9L6YeE76s= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+98998+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1674613518039734.3332356974657; Tue, 24 Jan 2023 18:25:18 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id HcaGYY1788612xMIHbI4dD5m; Tue, 24 Jan 2023 18:25:17 -0800 X-Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by mx.groups.io with SMTP id smtpd.web11.36062.1674613516015515685 for ; Tue, 24 Jan 2023 18:25:16 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10600"; a="306128906" X-IronPort-AV: E=Sophos;i="5.97,244,1669104000"; d="scan'208";a="306128906" X-Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2023 18:24:52 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10600"; a="804844461" X-IronPort-AV: E=Sophos;i="5.97,244,1669104000"; d="scan'208";a="804844461" X-Received: from mxu9-mobl1.ccr.corp.intel.com ([10.254.209.204]) by fmsmga001-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2023 18:24:50 -0800 From: "Min Xu" To: devel@edk2.groups.io Cc: Min M Xu , Erdem Aktas , James Bottomley , Jiewen Yao , Gerd Hoffmann , Tom Lendacky , Michael Roth Subject: [edk2-devel] [PATCH V3 7/9] OvmfPkg/IntelTdx: Add PeiTdxHelperLib Date: Wed, 25 Jan 2023 10:23:57 +0800 Message-Id: <20230125022359.1645-8-min.m.xu@intel.com> In-Reply-To: <20230125022359.1645-1-min.m.xu@intel.com> References: <20230125022359.1645-1-min.m.xu@intel.com> MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,min.m.xu@intel.com X-Gm-Message-State: uX2Jw6d8uwqn8m5J6HTLFzMvx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1674613517; bh=TWbd6J8zcTeaL4ALtSq1a2v82bIYoTMa4OgCWa0sKtI=; h=Cc:Date:From:Reply-To:Subject:To; b=wNtlCpciiiRnZz5jH2EXbWgws1EfbC1vZGuNo5V1/r1XuSqbgqLehgqwInf598FohQ9 MUdic4E2qpF1iPXmDYC9rAtQvIAownEoaBpFtxBl2aqWwIUoosCk2Xpg/cqi3yXr0VBfG QYR2hrqZxIfV6x1C1LsKvrAIU9nfcCT2JwY= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1674613519454100006 Content-Type: text/plain; charset="utf-8" From: Min M Xu BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D4243 TdxHelperLib provides below helper functions for a td-guest. - TdxHelperProcessTdHob - TdxHelperMeasureTdHob - TdxHelperMeasureCfvImage - TdxHelperBuildGuidHobForTdxMeasurement PeiTdxHelperLib is the PEI instance of TdxHelperLib. It implements 1 function for tdx in PEI phase. Other functions are not supported in PEI phase. - TdxHelperBuildGuidHobForTdxMeasurement builds GuidHob for tdx measurement in PEI phase. Cc: Erdem Aktas Cc: James Bottomley Cc: Jiewen Yao Cc: Gerd Hoffmann Cc: Tom Lendacky Cc: Michael Roth Acked-by: Gerd Hoffmann Signed-off-by: Min Xu --- OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelper.c | 91 +++++++++++++++++++ .../IntelTdx/TdxHelperLib/PeiTdxHelperLib.inf | 48 ++++++++++ 2 files changed, 139 insertions(+) create mode 100644 OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelper.c create mode 100644 OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelperLib.inf diff --git a/OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelper.c b/OvmfPkg/IntelTd= x/TdxHelperLib/PeiTdxHelper.c new file mode 100644 index 000000000000..91ab53ed14ad --- /dev/null +++ b/OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelper.c @@ -0,0 +1,91 @@ +/** @file + TdxHelper Functions which are used in PEI phase + + Copyright (c) 2022 - 2023, Intel Corporation. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include +#include + +/** + Build the GuidHob for tdx measurements which were done in SEC phase. + The measurement values are stored in WorkArea. + + @retval EFI_SUCCESS The GuidHob is built successfully + @retval Others Other errors as indicated +**/ +EFI_STATUS +InternalBuildGuidHobForTdxMeasurement ( + VOID + ); + +/** + In Tdx guest, some information need to be passed from host VMM to guest + firmware. For example, the memory resource, etc. These information are + prepared by host VMM and put in TdHob which is described in TdxMetadata. + TDVF processes the TdHob to accept memories. + + @retval EFI_SUCCESS Successfully process the TdHob + @retval Others Other error as indicated +**/ +EFI_STATUS +EFIAPI +TdxHelperProcessTdHob ( + VOID + ) +{ + return EFI_UNSUPPORTED; +} + +/** + In Tdx guest, TdHob is passed from host VMM to guest firmware and it con= tains + the information of the memory resource. From the security perspective be= fore + it is consumed, it should be measured and extended. + * + * @retval EFI_SUCCESS Successfully measure the TdHob + * @retval Others Other error as indicated + */ +EFI_STATUS +EFIAPI +TdxHelperMeasureTdHob ( + VOID + ) +{ + return EFI_UNSUPPORTED; +} + +/** + * In Tdx guest, Configuration FV (CFV) is treated as external input becau= se it + * may contain the data provided by VMM. From the sucurity perspective Cfv= image + * should be measured before it is consumed. + * + * @retval EFI_SUCCESS Successfully measure the CFV image + * @retval Others Other error as indicated + */ +EFI_STATUS +EFIAPI +TdxHelperMeasureCfvImage ( + VOID + ) +{ + return EFI_UNSUPPORTED; +} + +/** + Build the GuidHob for tdx measurements which were done in SEC phase. + The measurement values are stored in WorkArea. + + @retval EFI_SUCCESS The GuidHob is built successfully + @retval Others Other errors as indicated +**/ +EFI_STATUS +EFIAPI +TdxHelperBuildGuidHobForTdxMeasurement ( + VOID + ) +{ + return InternalBuildGuidHobForTdxMeasurement (); +} diff --git a/OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelperLib.inf b/OvmfPkg/In= telTdx/TdxHelperLib/PeiTdxHelperLib.inf new file mode 100644 index 000000000000..ad3b6c1da62b --- /dev/null +++ b/OvmfPkg/IntelTdx/TdxHelperLib/PeiTdxHelperLib.inf @@ -0,0 +1,48 @@ +## @file +# TdxHelperLib PEI instance +# +# This module provides Tdx helper functions in PEI phase. +# Copyright (c) 2021 - 2023, Intel Corporation. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION =3D 0x00010005 + BASE_NAME =3D PeiTdxHelperLib + FILE_GUID =3D 4d22289d-3bde-4501-a737-7719f3215065 + MODULE_TYPE =3D BASE + VERSION_STRING =3D 1.0 + LIBRARY_CLASS =3D TdxHelperLib|PEIM + +# +# The following information is for reference only and not required by the = build tools. +# +# VALID_ARCHITECTURES =3D X64 +# + +[Sources] + PeiTdxHelper.c + TdxMeasurementHob.c + +[Packages] + MdeModulePkg/MdeModulePkg.dec + MdePkg/MdePkg.dec + OvmfPkg/OvmfPkg.dec + SecurityPkg/SecurityPkg.dec + +[LibraryClasses] + BaseLib + DebugLib + HobLib + PcdLib + +[FixedPcd] + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecGhcbBase + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageVariableBase + gUefiOvmfPkgTokenSpaceGuid.PcdCfvRawDataSize + +[Guids] + gCcEventEntryHobGuid --=20 2.29.2.windows.2 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#98998): https://edk2.groups.io/g/devel/message/98998 Mute This Topic: https://groups.io/mt/96513461/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-