From nobody Tue Feb 10 01:15:53 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+99117+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+99117+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1674778309; cv=none; d=zohomail.com; s=zohoarc; b=aC35Xxv6oottrZgU6iJQgXGg2NYaGQmXcSITEoQ9x9qztCDBRQYW6fMCSI7sdXAMlqYrqdqloHk3PPQ1lJzCmYzrUhkGSZWaC+NAAN73LE6xXghLjHcoVn5RHLNyfbMrJDlSAc3ZhaMJSFQij7ft+NjfnHUtKq4CZ6x0QkGO7n4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1674778309; 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=Qm3FGbr6+y3PNZDeGlfcg9EbTbJwyZjvk3rPkuyrmrI=; b=dki2Mrj1Bh3sVA5nWG/PuDkjt62MT3r24/xxRuIZPhdmKbSy78mBIkvWuAqu1NuMMgIJM3ywkrff/w6ztgJXMrnun8GhrhRcu0Xt6mcxp2zYtumKDiwJOP8C7EotyQP6/wez14qIsZN9fRio1cYGU14S0DXPk8tncuHV1kqQHDs= 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+99117+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 167477830924072.54964910217609; Thu, 26 Jan 2023 16:11:49 -0800 (PST) Return-Path: X-Received: by 127.0.0.2 with SMTP id OfflYY1788612xO3GkmfHYM4; Thu, 26 Jan 2023 16:11:48 -0800 X-Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by mx.groups.io with SMTP id smtpd.web11.91010.1674778280571183584 for ; Thu, 26 Jan 2023 16:11:48 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10602"; a="314942493" X-IronPort-AV: E=Sophos;i="5.97,249,1669104000"; d="scan'208";a="314942493" X-Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2023 16:11:47 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10602"; a="695335845" X-IronPort-AV: E=Sophos;i="5.97,249,1669104000"; d="scan'208";a="695335845" X-Received: from mxu9-mobl1.ccr.corp.intel.com ([10.254.209.180]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2023 16:11:44 -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 V4 10/12] OvmfPkg/IntelTdx: Add PeiTdxHelperLib Date: Fri, 27 Jan 2023 08:11:04 +0800 Message-Id: <20230127001106.2038-11-min.m.xu@intel.com> In-Reply-To: <20230127001106.2038-1-min.m.xu@intel.com> References: <20230127001106.2038-1-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: L1QWVyYDz4RWQ1cTrofHbCqUx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1674778308; bh=PqylPDRoN4Lrw7rSxvYTO7bKRUHI1K6jRJ+uGiOE67I=; h=Cc:Date:From:Reply-To:Subject:To; b=drNhPRj4bIB9DOxNAcGK/ZMU6AodcY2Oe7GTKjh/Q0IPEL/Pg4tW/5mlV84n9mTjNUp TmIuCaYHuHwMPRhawWYKjwYjPoPOgWta4tTB5meUHulgz45nBxYlXCGvTRKudthT6beG4 eifxeLiSHLLF3a5rPzkQlgjyOgh4AxWYFNA= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1674778311290100001 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 (#99117): https://edk2.groups.io/g/devel/message/99117 Mute This Topic: https://groups.io/mt/96556345/1787277 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-