[PATCH V3 1/3] MdePkg: Add Tdx support lib

["Min Xu" <min.m.xu@intel.com>]

Intel Trust Domain Extension (Intel TDX) refers to an Intel technology
that extends Virtual Machines Extensions (VMX) and Multi-Key Total
Memory Encryption (MKTME) with a new kind of virtual machine guest
called a Trust Domain (TD).

TdxLib is created with functions to perform the related Tdx operation.
This includes functions for:
  - TdCall         : to cause a VM exit to the Intel TDX module
  - TdVmCall       : it is a leaf function 0 for TDCALL
  - TdVmCallCpuid  : enable the TD guest to request VMM to emulate CPUID
  - TdReport       : to retrieve TDREPORT_STRUCT
  - TdAcceptPages  : to accept pending private pages
  - TdExtendRtmr   : to extend one of the RTMR registers

The base function in this dirver will not do anything and will return
an error if a return value is required. It is expected that other
packages (like OvmfPkg) will create a version of the library to fully
support a TD guest.

Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>

Signed-off-by: Min Xu <min.m.xu@intel.com>
Signed-off-by: Doug Reiland <doug.reiland@intel.com>
---
 MdePkg/Include/IndustryStandard/Tdx.h | 201 ++++++++++++++++++++++++++
 MdePkg/Include/Library/TdxLib.h       | 165 +++++++++++++++++++++
 MdePkg/Include/Protocol/Tdx.h         |  29 ++++
 MdePkg/Library/TdxLib/TdxLibNull.c    | 155 ++++++++++++++++++++
 MdePkg/Library/TdxLib/TdxLibNull.inf  |  33 +++++
 5 files changed, 583 insertions(+)
 create mode 100644 MdePkg/Include/IndustryStandard/Tdx.h
 create mode 100644 MdePkg/Include/Library/TdxLib.h
 create mode 100644 MdePkg/Include/Protocol/Tdx.h
 create mode 100644 MdePkg/Library/TdxLib/TdxLibNull.c
 create mode 100644 MdePkg/Library/TdxLib/TdxLibNull.inf

diff --git a/MdePkg/Include/IndustryStandard/Tdx.h b/MdePkg/Include/IndustryStandard/Tdx.h
new file mode 100644
index 000000000000..dbcc31c26528
--- /dev/null
+++ b/MdePkg/Include/IndustryStandard/Tdx.h
@@ -0,0 +1,201 @@
+/** @file
+  Intel Trust Domain Extension definitions
+
+  Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _TDX_H_
+#define _TDX_H_
+
+#define EXIT_REASON_EXTERNAL_INTERRUPT  1
+#define EXIT_REASON_TRIPLE_FAULT        2
+
+#define EXIT_REASON_PENDING_INTERRUPT   7
+#define EXIT_REASON_NMI_WINDOW          8
+#define EXIT_REASON_TASK_SWITCH         9
+#define EXIT_REASON_CPUID               10
+#define EXIT_REASON_HLT                 12
+#define EXIT_REASON_INVD                13
+#define EXIT_REASON_INVLPG              14
+#define EXIT_REASON_RDPMC               15
+#define EXIT_REASON_RDTSC               16
+#define EXIT_REASON_VMCALL              18
+#define EXIT_REASON_VMCLEAR             19
+#define EXIT_REASON_VMLAUNCH            20
+#define EXIT_REASON_VMPTRLD             21
+#define EXIT_REASON_VMPTRST             22
+#define EXIT_REASON_VMREAD              23
+#define EXIT_REASON_VMRESUME            24
+#define EXIT_REASON_VMWRITE             25
+#define EXIT_REASON_VMOFF               26
+#define EXIT_REASON_VMON                27
+#define EXIT_REASON_CR_ACCESS           28
+#define EXIT_REASON_DR_ACCESS           29
+#define EXIT_REASON_IO_INSTRUCTION      30
+#define EXIT_REASON_MSR_READ            31
+#define EXIT_REASON_MSR_WRITE           32
+#define EXIT_REASON_INVALID_STATE       33
+#define EXIT_REASON_MSR_LOAD_FAIL       34
+#define EXIT_REASON_MWAIT_INSTRUCTION   36
+#define EXIT_REASON_MONITOR_TRAP_FLAG   37
+#define EXIT_REASON_MONITOR_INSTRUCTION 39
+#define EXIT_REASON_PAUSE_INSTRUCTION   40
+#define EXIT_REASON_MCE_DURING_VMENTRY  41
+#define EXIT_REASON_TPR_BELOW_THRESHOLD 43
+#define EXIT_REASON_APIC_ACCESS         44
+#define EXIT_REASON_EOI_INDUCED         45
+#define EXIT_REASON_GDTR_IDTR           46
+#define EXIT_REASON_LDTR_TR             47
+#define EXIT_REASON_EPT_VIOLATION       48
+#define EXIT_REASON_EPT_MISCONFIG       49
+#define EXIT_REASON_INVEPT              50
+#define EXIT_REASON_RDTSCP              51
+#define EXIT_REASON_PREEMPTION_TIMER    52
+#define EXIT_REASON_INVVPID             53
+#define EXIT_REASON_WBINVD              54
+#define EXIT_REASON_XSETBV              55
+#define EXIT_REASON_APIC_WRITE          56
+#define EXIT_REASON_RDRAND              57
+#define EXIT_REASON_INVPCID             58
+#define EXIT_REASON_VMFUNC              59
+#define EXIT_REASON_ENCLS               60
+#define EXIT_REASON_RDSEED              61
+#define EXIT_REASON_PML_FULL            62
+#define EXIT_REASON_XSAVES              63
+#define EXIT_REASON_XRSTORS             64
+
+// TDCALL API Function Completion Status Codes
+#define TDX_EXIT_REASON_SUCCESS                     0x0000000000000000
+#define TDX_EXIT_REASON_PAGE_ALREADY_ACCEPTED       0x00000B0A00000000
+#define TDX_EXIT_REASON_OPERAND_INVALID             0xC000010000000000
+#define TDX_EXIT_REASON_OPERAND_BUSY                0x8000020000000000
+
+#define TDCALL_TDVMCALL                 0
+#define TDCALL_TDINFO                   1
+#define TDCALL_TDEXTENDRTMR             2
+#define TDCALL_TDGETVEINFO              3
+#define TDCALL_TDREPORT                 4
+#define TDCALL_TDSETCPUIDVE             5
+#define TDCALL_TDACCEPTPAGE             6
+
+#define TDVMCALL_CPUID                  0x0000a
+#define TDVMCALL_HALT                   0x0000c
+#define TDVMCALL_IO                     0x0001e
+#define TDVMCALL_RDMSR                  0x0001f
+#define TDVMCALL_WRMSR                  0x00020
+#define TDVMCALL_MMIO                   0x00030
+#define TDVMCALL_PCONFIG                0x00041
+
+#define TDVMCALL_GET_TDVMCALL_INFO      0x10000
+#define TDVMCALL_MAPGPA                 0x10001
+#define TDVMCALL_GET_QUOTE              0x10002
+#define TDVMCALL_REPORT_FATAL_ERR       0x10003
+#define TDVMCALL_SETUP_EVENT_NOTIFY     0x10004
+
+#pragma pack(1)
+typedef struct {
+  UINT64  Data[6];
+} TDCALL_GENERIC_RETURN_DATA;
+
+typedef struct {
+  UINT64  Gpaw;
+  UINT64  Attributes;
+  UINT32  MaxVcpus;
+  UINT32  NumVcpus;
+  UINT64  Resv[3];
+} TDCALL_INFO_RETURN_DATA;
+
+typedef union {
+  UINT64  Val;
+  struct {
+    UINT32  Size:3;
+    UINT32  Direction:1;
+    UINT32  String:1;
+    UINT32  Rep:1;
+    UINT32  Encoding:1;
+    UINT32  Resv:9;
+    UINT32  Port:16;
+    UINT32  Resv2;
+  } Io;
+} VMX_EXIT_QUALIFICATION;
+
+typedef struct {
+  UINT32                  ExitReason;
+  UINT32                  Resv;
+  VMX_EXIT_QUALIFICATION  ExitQualification;
+  UINT64                  GuestLA;
+  UINT64                  GuestPA;
+  UINT32                  ExitInstructionLength;
+  UINT32                  ExitInstructionInfo;
+  UINT32                  Resv1;
+} TDCALL_VEINFO_RETURN_DATA;
+
+typedef union {
+  TDCALL_GENERIC_RETURN_DATA  Generic;
+  TDCALL_INFO_RETURN_DATA     TdInfo;
+  TDCALL_VEINFO_RETURN_DATA   VeInfo;
+} TD_RETURN_DATA;
+
+/* data structure used in TDREPORT_STRUCT */
+typedef struct{
+  UINT8         Type;
+  UINT8         Subtype;
+  UINT8         Version;
+  UINT8         Rsvd;
+}TD_REPORT_TYPE;
+
+typedef struct{
+  TD_REPORT_TYPE   ReportType;
+  UINT8            Rsvd1[12];
+  UINT8            CpuSvn[16];
+  UINT8            TeeTcbInfoHash[48];
+  UINT8            TeeInfoHash[48];
+  UINT8            ReportData[64];
+  UINT8            Rsvd2[32];
+  UINT8            Mac[32];
+}REPORTMACSTRUCT;
+
+typedef struct{
+  UINT8         Seam[2];
+  UINT8         Rsvd[14];
+}TEE_TCB_SVN;
+
+typedef struct{
+  UINT8         Valid[8];
+  TEE_TCB_SVN   TeeTcbSvn;
+  UINT8         Mrseam[48];
+  UINT8         Mrsignerseam[48];
+  UINT8         Attributes[8];
+  UINT8         Rsvd[111];
+}TEE_TCB_INFO;
+
+typedef struct{
+  UINT8         Attributes[8];
+  UINT8         Xfam[8];
+  UINT8         Mrtd[48];
+  UINT8         Mrconfigid[48];
+  UINT8         Mrowner[48];
+  UINT8         Mrownerconfig[48];
+  UINT8         Rtmrs[4][48];
+  UINT8         Rsvd[112];
+}TDINFO;
+
+typedef struct{
+  REPORTMACSTRUCT   ReportMacStruct;
+  TEE_TCB_INFO      TeeTcbInfo;
+  UINT8             Rsvd[17];
+  TDINFO            Tdinfo;
+}TDREPORT_STRUCT;
+
+#pragma pack()
+
+#endif
+
diff --git a/MdePkg/Include/Library/TdxLib.h b/MdePkg/Include/Library/TdxLib.h
new file mode 100644
index 000000000000..5e8634c6df79
--- /dev/null
+++ b/MdePkg/Include/Library/TdxLib.h
@@ -0,0 +1,165 @@
+/** @file
+  TdxLib definitions
+
+  Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _TDX_LIB_H_
+#define _TDX_LIB_H_
+
+#include <Library/BaseLib.h>
+#include <Uefi/UefiBaseType.h>
+#include <Library/DebugLib.h>
+#include <Protocol/DebugSupport.h>
+
+/**
+  This function retrieve TDREPORT_STRUCT structure from TDX.
+  The struct contains the measurements/configuration information of
+  the guest TD that called the function, measurements/configuratio
+  information of the TDX-SEAM module and a REPORTMACSTRUCT.
+  The REPORTMACSTRUCT is integrity protected with a MAC and
+  contains the hash of the measurements and configuration
+  as well as additional REPORTDATA provided by the TD software.
+
+  AdditionalData, a 64-byte value, is provided by the guest TD
+  to be included in the TDREPORT
+
+  @param[in,out]  Report             Holds the TEREPORT_STRUCT.
+  @param[in]      ReportSize         Size of the report. It must be
+                                     larger than 1024B.
+  @param[in]      AdditionalData     Point to the additional data.
+  @param[in]      AdditionalDataSize Size of the additional data.
+                                     If AdditionalData != NULL, then
+                                     this value must be 64B.
+
+  @return EFI_SUCCESS
+  @return EFI_INVALID_PARAMETER
+  @return EFI_DEVICE_ERROR
+
+**/
+EFI_STATUS
+EFIAPI
+TdReport(
+  IN OUT UINT8  *Report,
+  IN UINT32     ReportSize,
+  IN UINT8      *AdditionalData,
+  IN UINT32     AdditionalDataSize
+);
+
+/**
+  This function accept a pending private page, and initialize the page to
+  all-0 using the TD ephemeral private key.
+
+  @param[in]  StartAddress     Guest physical address of the private page
+                               to accept.
+  @param[in]  NumberOfPages    Number of the pages to be accepted.
+
+  @return EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+TdAcceptPages (
+  IN UINT64  StartAddress,
+  IN UINT64  NumberOfPages
+  );
+
+/**
+  This function extends one of the RTMR measurement register
+  in TDCS with the provided extension data in memory.
+  RTMR extending supports SHA384 which length is 48 bytes.
+
+  @param[in]  Data      Point to the data to be extended
+  @param[in]  DataLen   Length of the data. Must be 48
+  @param[in]  Index     RTMR index
+
+  @return EFI_SUCCESS
+  @return EFI_INVALID_PARAMETER
+  @return EFI_DEVICE_ERROR
+
+**/
+EFI_STATUS
+EFIAPI
+TdExtendRtmr(
+  IN  UINT32  *Data,
+  IN  UINT32  DataLen,
+  IN  UINT8   PcrIndex
+  );
+
+/**
+  The TDCALL instruction causes a VM exit to the Intel TDX module.  It is
+  used to call guest-side Intel TDX functions, either local or a TD exit
+  to the host VMM, as selected by Leaf.
+  Leaf functions are described at <https://software.intel.com/content/
+  www/us/en/develop/articles/intel-trust-domain-extensions.html>
+
+  @param[in]      Leaf        Leaf number of TDCALL instruction
+  @param[in]      Arg1        Arg1
+  @param[in]      Arg2        Arg2
+  @param[in]      Arg3        Arg3
+  @param[in,out]  Results  Returned result of the Leaf function
+
+  @return EFI_SUCCESS
+  @return Other           See individual leaf functions
+**/
+EFI_STATUS
+EFIAPI
+TdCall(
+  IN UINT64           Leaf,
+  IN UINT64           Arg1,
+  IN UINT64           Arg2,
+  IN UINT64           Arg3,
+  IN OUT VOID         *Results
+  );
+
+/**
+  TDVMALL is a leaf function 0 for TDCALL. It helps invoke services from the
+  host VMM to pass/receive information.
+
+  @param[in]     Leaf        Number of sub-functions
+  @param[in]     Arg1        Arg1
+  @param[in]     Arg2        Arg2
+  @param[in]     Arg3        Arg3
+  @param[in]     Arg4        Arg4
+  @param[in,out] Results     Returned result of the sub-function
+
+  @return EFI_SUCCESS
+  @return Other           See individual sub-functions
+
+**/
+EFI_STATUS
+EFIAPI
+TdVmCall (
+  IN UINT64          Leaf,
+  IN UINT64          Arg1,
+  IN UINT64          Arg2,
+  IN UINT64          Arg3,
+  IN UINT64          Arg4,
+  IN OUT VOID        *Results
+  );
+
+/**
+  This function enable the TD guest to request the VMM to emulate CPUID
+  operation, especially for non-architectural, CPUID leaves.
+
+  @param[in]  Eax        Main leaf of the CPUID
+  @param[in]  Ecx        Sub-leaf of the CPUID
+  @param[out] Results    Returned result of CPUID operation
+
+  @return EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+TdVmCallCpuid (
+  IN UINT64         Eax,
+  IN UINT64         Ecx,
+  OUT VOID          *Results
+  );
+#endif
diff --git a/MdePkg/Include/Protocol/Tdx.h b/MdePkg/Include/Protocol/Tdx.h
new file mode 100644
index 000000000000..b5e9b19c1276
--- /dev/null
+++ b/MdePkg/Include/Protocol/Tdx.h
@@ -0,0 +1,29 @@
+/** @file
+  If TD-Guest firmware supports measurement and an event is created, TD-Guest
+  firmware is designed to report the event log with the same data structure
+  in TCG-Platform-Firmware-Profile specification with
+  EFI_TCG2_EVENT_LOG_FORMAT_TCG_2 format.
+
+  The TD-Guest firmware supports measurement, the TD Guest Firmware is designed
+  to produce EFI_TD_PROTOCOL with new GUID EFI_TD_PROTOCOL_GUID to report
+  event log and provides hash capability.
+
+Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+#ifndef __EFI_TDX_H__
+#define __EFI_TDX_H__
+
+#include <Uefi/UefiBaseType.h>
+
+#define EFI_TDX_EVENT_DATA_SIGNATURE  SIGNATURE_32 ('T', 'D', 'E', 'L')
+
+#define EFI_TD_PROTOCOL_GUID  \
+  {0x96751a3d, 0x72f4, 0x41a6, { 0xa7, 0x94, 0xed, 0x5d, 0x0e, 0x67, 0xae, 0x6b }}
+extern EFI_GUID gEfiTdProtocolGuid;
+
+
+#endif
diff --git a/MdePkg/Library/TdxLib/TdxLibNull.c b/MdePkg/Library/TdxLib/TdxLibNull.c
new file mode 100644
index 000000000000..8d759e4d33a4
--- /dev/null
+++ b/MdePkg/Library/TdxLib/TdxLibNull.c
@@ -0,0 +1,155 @@
+/** @file
+  Null instance of TdxLib.
+
+  Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <IndustryStandard/Tdx.h>
+#include <Library/TdxLib.h>
+
+/**
+  This function retrieve TDREPORT_STRUCT structure from TDX.
+  The struct contains the measurements/configuration information of
+  the guest TD that called the function, measurements/configuratio
+  information of the TDX-SEAM module and a REPORTMACSTRUCT.
+  The REPORTMACSTRUCT is integrity protected with a MAC and
+  contains the hash of the measurements and configuration
+  as well as additional REPORTDATA provided by the TD software.
+
+  AdditionalData, a 64-byte value, is provided by the guest TD
+  to be included in the TDREPORT
+
+  @param[in,out]  Report             Holds the TEREPORT_STRUCT.
+  @param[in]      ReportSize         Size of the report. It must be
+                                     larger than 1024B.
+  @param[in]      AdditionalData     Point to the additional data.
+  @param[in]      AdditionalDataSize Size of the additional data.
+                                     If AdditionalData != NULL, then
+                                     this value must be 64B.
+
+  @return EFI_SUCCESS
+  @return EFI_INVALID_PARAMETER
+  @return EFI_DEVICE_ERROR
+
+**/
+EFI_STATUS
+EFIAPI
+TdReport(
+  IN OUT UINT8  *Report,
+  IN UINT32     ReportSize,
+  IN UINT8      *AdditionalData,
+  IN UINT32     AdditionalDataSize
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  This function accept a pending private page, and initialize the page to
+  all-0 using the TD ephemeral private key.
+
+  @param[in]  StartAddress     Guest physical address of the private page
+                               to accept.
+  @param[in]  NumberOfPages    Number of the pages to be accepted.
+
+  @return EFI_UNSUPPORTED
+**/
+EFI_STATUS
+EFIAPI
+TdAcceptPages (
+  IN UINT64  StartAddress,
+  IN UINT64  NumberOfPages
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  The TDCALL instruction causes a VM exit to the Intel TDX module.  It is
+  used to call guest-side Intel TDX functions, either local or a TD exit
+  to the host VMM, as selected by Leaf.
+  Leaf functions are described at <https://software.intel.com/content/
+  www/us/en/develop/articles/intel-trust-domain-extensions.html>
+
+  @param[in]      Leaf        Leaf number of TDCALL instruction
+  @param[in]      Arg1        Arg1
+  @param[in]      Arg2        Arg2
+  @param[in]      Arg3        Arg3
+  @param[in,out]  Results  Returned result of the Leaf function
+
+  @return EFI_SUCCESS
+  @return Other           See individual leaf functions
+**/
+EFI_STATUS
+EFIAPI
+TdCall(
+  IN UINT64           Leaf,
+  IN UINT64           Arg1,
+  IN UINT64           Arg2,
+  IN UINT64           Arg3,
+  IN OUT VOID         *Results
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  TDVMALL is a leaf function 0 for TDCALL. It helps invoke services from the
+  host VMM to pass/receive information.
+
+  @param[in]     Leaf        Number of sub-functions
+  @param[in]     Arg1        Arg1
+  @param[in]     Arg2        Arg2
+  @param[in]     Arg3        Arg3
+  @param[in]     Arg4        Arg4
+  @param[in,out] Results     Returned result of the sub-function
+
+  @return EFI_SUCCESS
+  @return Other           See individual sub-functions
+
+**/
+EFI_STATUS
+EFIAPI
+TdVmCall (
+  IN UINT64          Leaf,
+  IN UINT64          Arg1,
+  IN UINT64          Arg2,
+  IN UINT64          Arg3,
+  IN UINT64          Arg4,
+  IN OUT VOID        *Results
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  This function enable the TD guest to request the VMM to emulate CPUID
+  operation, especially for non-architectural, CPUID leaves.
+
+  @param[in]     Eax        Main leaf of the CPUID
+  @param[in]     Ecx        Sub-leaf of the CPUID
+  @param[in,out] Results    Returned result of CPUID operation
+
+  @return EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+TdVmCallCpuid (
+  IN UINT64         Eax,
+  IN UINT64         Ecx,
+  IN OUT VOID       *Results
+  )
+{
+  return EFI_UNSUPPORTED;
+}
diff --git a/MdePkg/Library/TdxLib/TdxLibNull.inf b/MdePkg/Library/TdxLib/TdxLibNull.inf
new file mode 100644
index 000000000000..0d07595a8c3e
--- /dev/null
+++ b/MdePkg/Library/TdxLib/TdxLibNull.inf
@@ -0,0 +1,33 @@
+## @file
+#  Null Tdx library instance
+#
+# Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php.
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = TdxLibNull
+  FILE_GUID                      = 05C5E621-FC66-4420-9C80-F0DE9E5B95FF
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = TdxLib
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = X64
+#
+
+[Sources]
+  TdxLibNull.c
+
+[Packages]
+  MdePkg/MdePkg.dec
-- 
2.29.2.windows.2