From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by mx.groups.io with SMTP id smtpd.web11.37667.1674098921938942214 for ; Wed, 18 Jan 2023 19:28:54 -0800 Authentication-Results: mx.groups.io; dkim=fail reason="unable to parse pub key" header.i=@intel.com header.s=intel header.b=gtYkw37s; spf=pass (domain: intel.com, ip: 134.134.136.31, mailfrom: min.m.xu@intel.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674098934; x=1705634934; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=omsWD28A/KgrKC/wljI9/Z5s7Sct7AAy1VQi7wjSPpY=; b=gtYkw37spJU8qUsUJMoouz5fKLGAX3hWxtno/Qq/T/yU+vWY0u3A2eVO 9KJMeFyRbIvX2E07wnAr6ZSDk3A6uVDS0gj9qLCD3C1qpXpL9QVgmUGNP Mek950wQKhFKg5LLB+UeMzbZUxWrHTmr3GYS1sncL0QLqQJzc+NJJ6I7m ObQkZCMWw2oMsEzYZg9yvbwUDu+i4t817b/Uf2FQFG8sQObaF5Xxpl/bd /j3hlppEPTqiu3DGtOWqLjEbTJVAwYJPxgTJxpwrn13h/KC8K9E/06efC CucvN1sQ5n82bQ3p2pBL6gX7TIkCCLiWVatoiq1mhS7lAtSWf9Ks8syFn Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10594"; a="387531198" X-IronPort-AV: E=Sophos;i="5.97,226,1669104000"; d="scan'208";a="387531198" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2023 19:28:53 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10594"; a="692264357" X-IronPort-AV: E=Sophos;i="5.97,226,1669104000"; d="scan'208";a="692264357" Received: from mxu9-mobl1.ccr.corp.intel.com ([10.254.211.169]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2023 19:28:51 -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: [PATCH V2 05/10] OvmfPkg/IntelTdx: Add PeiTdxHelperLib Date: Thu, 19 Jan 2023 11:28:17 +0800 Message-Id: <20230119032822.1406-6-min.m.xu@intel.com> X-Mailer: git-send-email 2.29.2.windows.2 In-Reply-To: <20230119032822.1406-1-min.m.xu@intel.com> References: <20230119032822.1406-1-min.m.xu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Min M Xu BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4243 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 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/IntelTdx/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 contains + the information of the memory resource. From the security perspective before + 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 because 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/IntelTdx/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 = 0x00010005 + BASE_NAME = PeiTdxHelperLib + FILE_GUID = 4d22289d-3bde-4501-a737-7719f3215065 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = TdxHelperLib|PEIM + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = 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 -- 2.29.2.windows.2