[PATCH v5 1/4] MdePkg: Add MipiSysTLib library

["Guo, Gua" <gua.guo@intel.com>]

From: Gua Guo <gua.guo@intel.com>

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4144

This Library provides functions consuming MIPI SYS-T submodule.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Guo Gua <gua.guo@intel.com>
Cc: Chan Laura <laura.chan@intel.com>
Cc: Prakashan Krishnadas Veliyathuparambil <krishnadas.veliyathuparambil.prakashan@intel.com>
Cc: K N Karthik <karthik.k.n@intel.com>
Signed-off-by: VictorX Hsu <victorx.hsu@intel.com>
---
 .gitmodules                                |  11 +-
 .pytool/CISettings.py                      |   2 +
 MdePkg/Include/Library/MipiSysTLib.h       |  66 ++
 MdePkg/Library/MipiSysTLib/GenMipiSystH.py | 132 ++++
 MdePkg/Library/MipiSysTLib/MipiSysTLib.c   | 123 ++++
 MdePkg/Library/MipiSysTLib/MipiSysTLib.inf |  52 ++
 MdePkg/Library/MipiSysTLib/Platform.c      | 164 +++++
 MdePkg/Library/MipiSysTLib/Platform.h      | 138 ++++
 MdePkg/Library/MipiSysTLib/Readme.md       |  25 +
 MdePkg/Library/MipiSysTLib/mipi_syst.h     | 789 +++++++++++++++++++++
 MdePkg/Library/MipiSysTLib/mipisyst        |   1 +
 MdePkg/MdePkg.ci.yaml                      |  12 +-
 MdePkg/MdePkg.dec                          |   9 +
 MdePkg/MdePkg.dsc                          |   1 +
 ReadMe.rst                                 |   1 +
 15 files changed, 1519 insertions(+), 7 deletions(-)
 create mode 100644 MdePkg/Include/Library/MipiSysTLib.h
 create mode 100644 MdePkg/Library/MipiSysTLib/GenMipiSystH.py
 create mode 100644 MdePkg/Library/MipiSysTLib/MipiSysTLib.c
 create mode 100644 MdePkg/Library/MipiSysTLib/MipiSysTLib.inf
 create mode 100644 MdePkg/Library/MipiSysTLib/Platform.c
 create mode 100644 MdePkg/Library/MipiSysTLib/Platform.h
 create mode 100644 MdePkg/Library/MipiSysTLib/Readme.md
 create mode 100644 MdePkg/Library/MipiSysTLib/mipi_syst.h
 create mode 160000 MdePkg/Library/MipiSysTLib/mipisyst

diff --git a/.gitmodules b/.gitmodules
index 6211c59724..fb79ebfb72 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -16,7 +16,7 @@
 [submodule "BaseTools/Source/C/BrotliCompress/brotli"]
 	path = BaseTools/Source/C/BrotliCompress/brotli
 	url = https://github.com/google/brotli
-	ignore = untracked
+	ignore = untracked
 [submodule "RedfishPkg/Library/JsonLib/jansson"]
 	path = RedfishPkg/Library/JsonLib/jansson
 	url = https://github.com/akheron/jansson
@@ -26,6 +26,9 @@
 [submodule "UnitTestFrameworkPkg/Library/SubhookLib/subhook"]
 	path = UnitTestFrameworkPkg/Library/SubhookLib/subhook
 	url = https://github.com/Zeex/subhook.git
-[submodule "MdePkg/Library/BaseFdtLib/libfdt"]
-	path = MdePkg/Library/BaseFdtLib/libfdt
-	url = https://github.com/devicetree-org/pylibfdt.git
+[submodule "MdePkg/Library/BaseFdtLib/libfdt"]
+	path = MdePkg/Library/BaseFdtLib/libfdt
+	url = https://github.com/devicetree-org/pylibfdt.git
+[submodule "MdePkg/Library/MipiSysTLib/mipisyst"]
+	path = MdePkg/Library/MipiSysTLib/mipisyst
+	url = https://github.com/MIPI-Alliance/public-mipi-sys-t.git
diff --git a/.pytool/CISettings.py b/.pytool/CISettings.py
index 2fb99f2a17..6fb7342f81 100644
--- a/.pytool/CISettings.py
+++ b/.pytool/CISettings.py
@@ -197,6 +197,8 @@ class Settings(CiBuildSettingsManager, UpdateSettingsManager, SetupSettingsManag
             "UnitTestFrameworkPkg/Library/SubhookLib/subhook", False))
         rs.append(RequiredSubmodule(
             "MdePkg/Library/BaseFdtLib/libfdt", False))
+        rs.append(RequiredSubmodule(
+            "MdePkg/Library/MipiSysTLib/mipisyst", False))
         return rs
 
     def GetName(self):
diff --git a/MdePkg/Include/Library/MipiSysTLib.h b/MdePkg/Include/Library/MipiSysTLib.h
new file mode 100644
index 0000000000..4ced1c02cd
--- /dev/null
+++ b/MdePkg/Include/Library/MipiSysTLib.h
@@ -0,0 +1,66 @@
+/** @file
+This header file declares functions consuming MIPI Sys-T submodule.
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef MIPI_SYST_LIB_H_
+#define MIPI_SYST_LIB_H_
+
+/**
+  Invoke initialization function in Mipi Sys-T module to initialize Mipi Sys-T handle.
+
+  @param[in, out]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+
+  @retval RETURN_SUCCESS      MIPI_SYST_HANDLE instance was initialized.
+  @retval Other               MIPI_SYST_HANDLE instance was not initialized.
+**/
+RETURN_STATUS
+EFIAPI
+InitMipiSystHandle (
+  IN OUT VOID  *MipiSystHandle
+  );
+
+/**
+  Invoke write_debug_string function in Mipi Sys-T module.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Severity        Severity type of input message.
+  @param[in]  Len             Length of data buffer.
+  @param[in]  Str             A pointer to data buffer.
+
+  @retval RETURN_SUCCESS               Data in buffer was processed.
+  @retval RETURN_ABORTED               No data need to be written to Trace Hub.
+  @retval RETURN_INVALID_PARAMETER     On entry, MipiSystHandle or Str is a NULL pointer.
+**/
+RETURN_STATUS
+EFIAPI
+MipiSystWriteDebug (
+  IN        VOID    *MipiSystHandle,
+  IN        UINT32  Severity,
+  IN        UINT16  Len,
+  IN CONST  CHAR8   *Str
+  );
+
+/**
+  Invoke catalog_write_message function in Mipi Sys-T module.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Severity        Severity type of input message.
+  @param[in]  CatId           Catalog Id.
+
+  @retval RETURN_SUCCESS               Data in buffer was processed.
+  @retval RETURN_INVALID_PARAMETER     On entry, MipiSystHandle is a NULL pointer.
+**/
+RETURN_STATUS
+EFIAPI
+MipiSystWriteCatalog (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Severity,
+  IN  UINT64  CatId
+  );
+
+#endif // MIPI_SYST_LIB_H_
diff --git a/MdePkg/Library/MipiSysTLib/GenMipiSystH.py b/MdePkg/Library/MipiSysTLib/GenMipiSystH.py
new file mode 100644
index 0000000000..ee48285590
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/GenMipiSystH.py
@@ -0,0 +1,132 @@
+## @file
+#  This python script update content from mipi_syst.h.in in mipi sys-T submodule
+#  and generate it as mipi_syst.h. mipi_syst.h include necessary data structure and
+#  definition that will be consumed by MipiSysTLib itself, mipi sys-T submodule
+#  and other library.
+#
+#  This script needs to be done once by a developer when adding some
+#  project-relating definition or a new version of mipi_syst.h.in is released.
+#  Normal users do not need to do this, since the resulting file is stored
+#  in the EDK2 git repository.
+#
+#  Customize structures mentioned below to generate updated mipi_syst.h file:
+#  1. ExistingValueToBeReplaced
+#       -> To replace existing value in mipi_syst.h.in to newer one.
+#  2. ExistingDefinitionToBeRemoved
+#       -> To #undef a existing definition in mipi_syst.h.in.
+#  3. NewItemToBeAdded
+#       -> Items in this structure will be placed at the end of mipi_syst.h as a customized section.
+#
+#  Run GenMipiSystH.py without any parameters as normal python script after customizing.
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+import os
+import re
+
+#
+# A existing value to be customized should place this structure
+# Definitions in this customizable structure will be processed by ReplaceOldValue()
+# e.g:
+#   Before: @SYST_CFG_VERSION_MAJOR@
+#   After: 1
+#
+ExistingValueToBeReplaced = [
+    ["@SYST_CFG_VERSION_MAJOR@", "1"],      # Major version
+    ["@SYST_CFG_VERSION_MINOR@", "0"],      # Minor version
+    ["@SYST_CFG_VERSION_PATCH@", "0"],      # Patch version
+    ["@SYST_CFG_CONFORMANCE_LEVEL@", "30"], # Feature level of mipi sys-T submodule
+    ["mipi_syst/platform.h", "Platform.h"],
+]
+
+#
+# A existing definition to be removed should place this structure
+# Definitions in this customizable structure will be processed by RemoveDefinition()
+# e.g:
+#   Before:
+#       #define MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA
+#   After:
+#       #define MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA
+#       #undef MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA
+#
+ExistingDefinitionToBeRemoved = [
+    "MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA",
+    "MIPI_SYST_PCFG_ENABLE_HEAP_MEMORY",
+    "MIPI_SYST_PCFG_ENABLE_PRINTF_API",
+    "MIPI_SYST_PCFG_ENABLE_LOCATION_RECORD",
+    "MIPI_SYST_PCFG_ENABLE_LOCATION_ADDRESS",
+]
+
+#
+# Items in this structure will be placed at the end of mipi_syst.h as a customized section.
+#
+NewItemToBeAdded = [
+    "typedef struct mipi_syst_handle_flags MIPI_SYST_HANDLE_FLAGS;",
+    "typedef struct mipi_syst_msg_tag MIPI_SYST_MSG_TAG;",
+    "typedef struct mipi_syst_guid MIPI_SYST_GUID;",
+    "typedef enum mipi_syst_severity MIPI_SYST_SEVERITY;",
+    "typedef struct mipi_syst_handle MIPI_SYST_HANDLE;",
+    "typedef struct mipi_syst_header MIPI_SYST_HEADER;",
+]
+
+def ProcessSpecialCharacter(Str):
+    Str = Str.rstrip(" \n")
+    Str = Str.replace("\t", "  ")
+    Str += "\n"
+    return Str
+
+def ReplaceOldValue(Str):
+    for i in range(len(ExistingValueToBeReplaced)):
+        Result = re.search(ExistingValueToBeReplaced[i][0], Str)
+        if Result is not None:
+            Str = Str.replace(ExistingValueToBeReplaced[i][0], ExistingValueToBeReplaced[i][1])
+            break
+    return Str
+
+def RemoveDefinition(Str):
+    Result = re.search("\*", Str)
+    if Result is None:
+        for i in range(len(ExistingDefinitionToBeRemoved)):
+            Result = re.search(ExistingDefinitionToBeRemoved[i], Str)
+            if Result is not None:
+                Result = re.search("defined", Str)
+                if Result is None:
+                    Str = Str + "#undef " + ExistingDefinitionToBeRemoved[i]
+                    break
+    return Str
+
+def main():
+    MipiSystHSrcDir = "mipisyst/library/include/mipi_syst.h.in"
+    MipiSystHRealSrcDir = os.path.join(os.getcwd(), os.path.normpath(MipiSystHSrcDir))
+    MipiSystHRealDstDir = os.path.join(os.getcwd(), "mipi_syst.h")
+
+    #
+    # Read content from mipi_syst.h.in and process each line by demand
+    #
+    with open(MipiSystHRealSrcDir, "r") as rfObj:
+        SrcFile = rfObj.readlines()
+        for lineIndex in range(len(SrcFile)):
+            SrcFile[lineIndex] = ProcessSpecialCharacter(SrcFile[lineIndex])
+            SrcFile[lineIndex] = ReplaceOldValue(SrcFile[lineIndex])
+            SrcFile[lineIndex] = RemoveDefinition(SrcFile[lineIndex])
+
+    #
+    # Typedef a structure or enum type
+    #
+    i = -1
+    for struct in NewItemToBeAdded:
+        struct += "\n"
+        SrcFile.insert(i, struct)
+        i -= 1
+
+    #
+    # Save edited content to mipi_syst.h
+    #
+    with open(MipiSystHRealDstDir, "w") as wfObj:
+        wfObj.writelines(SrcFile)
+
+if __name__ == '__main__':
+    main()
diff --git a/MdePkg/Library/MipiSysTLib/MipiSysTLib.c b/MdePkg/Library/MipiSysTLib/MipiSysTLib.c
new file mode 100644
index 0000000000..3a15a2af58
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/MipiSysTLib.c
@@ -0,0 +1,123 @@
+/** @file
+This file provide functions to communicate with mipi sys-T submodule.
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include "mipi_syst.h"
+
+/**
+  Invoke initialization function in Mipi Sys-T module to initialize Mipi Sys-T handle.
+
+  @param[in, out]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+
+  @retval RETURN_SUCCESS      MIPI_SYST_HANDLE instance was initialized.
+  @retval Other               MIPI_SYST_HANDLE instance was not initialized.
+**/
+RETURN_STATUS
+EFIAPI
+InitMipiSystHandle (
+  IN OUT VOID  *MipiSystHandle
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  if (MipiSystH == NULL) {
+    return RETURN_INVALID_PARAMETER;
+  }
+
+  mipi_syst_init (MipiSystH->systh_header, 0, NULL);
+
+  return RETURN_SUCCESS;
+}
+
+/**
+  Invoke write_debug_string function in Mipi Sys-T module.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Severity        Severity type of input message.
+  @param[in]  Len             Length of data buffer.
+  @param[in]  Str             A pointer to data buffer.
+
+  @retval RETURN_SUCCESS               Data in buffer was processed.
+  @retval RETURN_ABORTED               No data need to be written to Trace Hub.
+  @retval RETURN_INVALID_PARAMETER     On entry, MipiSystHandle or Str is a NULL pointer.
+**/
+RETURN_STATUS
+EFIAPI
+MipiSystWriteDebug (
+  IN        MIPI_SYST_HANDLE  *MipiSystHandle,
+  IN        UINT32            Severity,
+  IN        UINT16            Len,
+  IN CONST  CHAR8             *Str
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  if (MipiSystH == NULL) {
+    return RETURN_INVALID_PARAMETER;
+  }
+
+  if (Len == 0) {
+    //
+    // No data need to be written to Trace Hub
+    //
+    return RETURN_ABORTED;
+  }
+
+  if (Str == NULL) {
+    return RETURN_INVALID_PARAMETER;
+  }
+
+  mipi_syst_write_debug_string (
+    MipiSystH,
+    MIPI_SYST_NOLOCATION,
+    MIPI_SYST_STRING_GENERIC,
+    Severity,
+    Len,
+    Str
+    );
+
+  return RETURN_SUCCESS;
+}
+
+/**
+  Invoke catalog_write_message function in Mipi Sys-T module.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Severity        Severity type of input message.
+  @param[in]  CatId           Catalog Id.
+
+  @retval RETURN_SUCCESS               Data in buffer was processed.
+  @retval RETURN_INVALID_PARAMETER     On entry, MipiSystHandle is a NULL pointer.
+**/
+RETURN_STATUS
+EFIAPI
+MipiSystWriteCatalog (
+  IN  MIPI_SYST_HANDLE  *MipiSystHandle,
+  IN  UINT32            Severity,
+  IN  UINT64            CatId
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  if (MipiSystH == NULL) {
+    return RETURN_INVALID_PARAMETER;
+  }
+
+  mipi_syst_write_catalog64_message (
+    MipiSystH,
+    MIPI_SYST_NOLOCATION,
+    Severity,
+    CatId
+    );
+
+  return RETURN_SUCCESS;
+}
diff --git a/MdePkg/Library/MipiSysTLib/MipiSysTLib.inf b/MdePkg/Library/MipiSysTLib/MipiSysTLib.inf
new file mode 100644
index 0000000000..f2e7215b5b
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/MipiSysTLib.inf
@@ -0,0 +1,52 @@
+## @file
+#  A library providing funcitons to communicate with mipi sys-T submodule.
+#
+#  Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = MipiSysTLib
+  FILE_GUID                      = A58B0510-9E6D-4747-95D8-E5B8AF4633E6
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = MipiSysTLib
+
+  DEFINE MIPI_HEADER_PATH        = mipisyst/library/include/mipi_syst
+  DEFINE MIPI_SOURCE_PATH        = mipisyst/library/src
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64
+#
+
+[LibraryClasses]
+  IoLib
+  BaseMemoryLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[Sources]
+  MipiSysTLib.c
+  mipi_syst.h
+  Platform.c
+  Platform.h
+  $(MIPI_HEADER_PATH)/api.h
+  $(MIPI_HEADER_PATH)/crc32.h
+  $(MIPI_HEADER_PATH)/compiler.h
+  $(MIPI_HEADER_PATH)/message.h
+  $(MIPI_HEADER_PATH)/inline.h
+  $(MIPI_SOURCE_PATH)/mipi_syst_init.c
+  $(MIPI_SOURCE_PATH)/mipi_syst_api.c
+  $(MIPI_SOURCE_PATH)/mipi_syst_crc32.c
+  $(MIPI_SOURCE_PATH)/mipi_syst_writer.c
+  $(MIPI_SOURCE_PATH)/mipi_syst_inline.c
+  $(MIPI_SOURCE_PATH)/mipi_syst_compiler.c
+
+[BuildOptions]
+  *_*_*_CC_FLAGS  = -DMIPI_SYST_STATIC
diff --git a/MdePkg/Library/MipiSysTLib/Platform.c b/MdePkg/Library/MipiSysTLib/Platform.c
new file mode 100644
index 0000000000..90a524bc1e
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/Platform.c
@@ -0,0 +1,164 @@
+/** @file
+This file defines functions that output Trace Hub message.
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Library/IoLib.h>
+#include <Library/BaseMemoryLib.h>
+#include "mipi_syst.h"
+
+/**
+  Write 4 bytes to Trace Hub MMIO addr + 0x10.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD32Ts (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite32 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x10), Data);
+}
+
+/**
+  Write 4 bytes to Trace Hub MMIO addr + 0x18.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD32Mts (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite32 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x18), Data);
+}
+
+/**
+  Write 8 bytes to Trace Hub MMIO addr + 0x18.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD64Mts (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT64  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite64 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x18), Data);
+}
+
+/**
+  Write 1 byte to Trace Hub MMIO addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD8 (
+  IN  VOID   *MipiSystHandle,
+  IN  UINT8  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite8 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x0), Data);
+}
+
+/**
+  Write 2 bytes to Trace Hub MMIO mmio addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD16 (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT16  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite16 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x0), Data);
+}
+
+/**
+  Write 4 bytes to Trace Hub MMIO addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD32 (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite32 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x0), Data);
+}
+
+/**
+  Write 8 bytes to Trace Hub MMIO addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD64 (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT64  Data
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+  MmioWrite64 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x0), Data);
+}
+
+/**
+  Clear data in Trace Hub MMIO addr + 0x30.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+**/
+VOID
+EFIAPI
+MipiSystWriteFlag (
+  IN  VOID  *MipiSystHandle
+  )
+{
+  MIPI_SYST_HANDLE  *MipiSystH;
+
+  MipiSystH = (MIPI_SYST_HANDLE *)MipiSystHandle;
+
+  MmioWrite32 ((UINTN)(MipiSystH->systh_platform.TraceHubPlatformData.MmioAddr + 0x30), 0x0);
+}
diff --git a/MdePkg/Library/MipiSysTLib/Platform.h b/MdePkg/Library/MipiSysTLib/Platform.h
new file mode 100644
index 0000000000..ac77edf33d
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/Platform.h
@@ -0,0 +1,138 @@
+/** @file
+This header file declares functions and structures.
+
+Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef MIPI_SYST_PLATFORM_H_
+#define MIPI_SYST_PLATFORM_H_
+
+typedef struct {
+  UINT64    MmioAddr;
+} TRACE_HUB_PLATFORM_SYST_DATA;
+
+struct mipi_syst_platform_handle {
+  TRACE_HUB_PLATFORM_SYST_DATA    TraceHubPlatformData;
+};
+
+/**
+  Write 4 bytes to Trace Hub MMIO addr + 0x10.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD32Ts (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Data
+  );
+
+/**
+  Write 4 bytes to Trace Hub MMIO addr + 0x18.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD32Mts (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Data
+  );
+
+/**
+  Write 8 bytes to Trace Hub MMIO addr + 0x18.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD64Mts (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT64  Data
+  );
+
+/**
+  Write 1 byte to Trace Hub MMIO addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD8 (
+  IN  VOID   *MipiSystHandle,
+  IN  UINT8  Data
+  );
+
+/**
+  Write 2 bytes to Trace Hub MMIO mmio addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD16 (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT16  Data
+  );
+
+/**
+  Write 4 bytes to Trace Hub MMIO addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD32 (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT32  Data
+  );
+
+/**
+  Write 8 bytes to Trace Hub MMIO addr + 0x0.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+  @param[in]  Data            Data to be written.
+**/
+VOID
+EFIAPI
+MipiSystWriteD64 (
+  IN  VOID    *MipiSystHandle,
+  IN  UINT64  Data
+  );
+
+/**
+  Clear data in Trace Hub MMIO addr + 0x30.
+
+  @param[in]  MipiSystHandle  A pointer to MIPI_SYST_HANDLE structure.
+**/
+VOID
+EFIAPI
+MipiSystWriteFlag (
+  IN  VOID  *MipiSystHandle
+  );
+
+#define MIPI_SYST_PLATFORM_CLOCK()  1000 // (unit: MicroSecond)
+
+#ifndef MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA
+#define MIPI_SYST_OUTPUT_D32TS(MipiSystHandle, Data)   MipiSystWriteD32Ts ((MipiSystHandle), (Data))
+#define MIPI_SYST_OUTPUT_D32MTS(MipiSystHandle, Data)  MipiSystWriteD32Mts ((MipiSystHandle), (Data))
+#define MIPI_SYST_OUTPUT_D64MTS(MipiSystHandle, Data)  MipiSystWriteD64Mts ((MipiSystHandle), (Data))
+#define MIPI_SYST_OUTPUT_D8(MipiSystHandle, Data)      MipiSystWriteD8 ((MipiSystHandle), (Data))
+#define MIPI_SYST_OUTPUT_D16(MipiSystHandle, Data)     MipiSystWriteD16 ((MipiSystHandle), (Data))
+#define MIPI_SYST_OUTPUT_D32(MipiSystHandle, Data)     MipiSystWriteD32 ((MipiSystHandle), (Data))
+  #if defined (MIPI_SYST_PCFG_ENABLE_64BIT_IO)
+#define MIPI_SYST_OUTPUT_D64(MipiSystHandle, Data)  MipiSystWriteD64 ((MipiSystHandle), (Data))
+  #endif
+#define MIPI_SYST_OUTPUT_FLAG(MipiSystHandle)  MipiSystWriteFlag ((MipiSystHandle))
+#endif
+
+#endif // MIPI_SYST_PLATFORM_H_
diff --git a/MdePkg/Library/MipiSysTLib/Readme.md b/MdePkg/Library/MipiSysTLib/Readme.md
new file mode 100644
index 0000000000..2e5df0194e
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/Readme.md
@@ -0,0 +1,25 @@
+## Introduction of MipiSysTLib ##
+MipiSysTLib library is a upper level library consuming MIPI SYS-T submodule.
+It provides MIPI-related APIs in EDK2 format to be consumed.
+
+## MipiSysTLib Version ##
+EDK2 supports building with v1.1+edk2 official version which was fully validated.
+
+## HOW to Install MipiSysTLib for UEFI Building ##
+MIPI SYS-T repository was added as a submodule of EDK2 project. Please
+refer to edk2/Readme.md for how to clone the code.
+
+## About GenMipiSystH.py ##
+"GenMipiSystH.py" is a Python script which is used for customizing the
+mipi_syst.h.in in mipi sys-T repository. The resulting file, mipi_syst.h, will
+be put to same folder level as this script.
+```
+  mipisyst submodule                        MipiSysTLib library
+|---------------------| GenMipiSystH.py   |---------------------|
+|   mipi_syst.h.in    |-----------------> |   mipi_syst.h       |
+|---------------------|                   |---------------------|
+```
+This script needs to be done once by a developer when adding some
+project-related definition or a new version of mipi_syst.h.in was released.
+Normal users do not need to do this, since the resulting file is stored
+in the EDK2 git repository.
diff --git a/MdePkg/Library/MipiSysTLib/mipi_syst.h b/MdePkg/Library/MipiSysTLib/mipi_syst.h
new file mode 100644
index 0000000000..3cf67a1ee5
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/mipi_syst.h
@@ -0,0 +1,789 @@
+/*
+Copyright (c) 2018, MIPI Alliance, Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in
+  the documentation and/or other materials provided with the
+  distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived
+  from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*
+ * Contributors:
+ * Norbert Schulz (Intel Corporation) - Initial API and implementation
+ */
+
+#ifndef MIPI_SYST_H_INCLUDED
+#define MIPI_SYST_H_INCLUDED
+
+/* SyS-T API version information
+ */
+#define MIPI_SYST_VERSION_MAJOR 1   /**< Major version, incremented if API changes */
+#define MIPI_SYST_VERSION_MINOR 0   /**< Minor version, incremented on compatible extensions */
+#define MIPI_SYST_VERSION_PATCH 0   /**< Patch for existing major, minor, usually 0 */
+
+/** Define SyS-T API conformance level
+ *
+ * 10 = minimal (only short events)
+ * 20 = low overhead  (exluding varag functions and CRC32)
+ * 30 = full implementation
+ */
+#define MIPI_SYST_CONFORMANCE_LEVEL 30
+
+/** Compute SYS-T version value
+ *
+ * Used to compare SYS-T Major.Minor.patch versions numerically at runtime.
+ *
+ * @param ma major version number
+ * @param mi minor version number
+ * @param p patch version number
+ *
+ * Example:
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.c}
+ *
+ * #if  MIPI_SYST_VERSION_CODE >= MIPI_SYST_MAKE_VERSION_CODE(1,5,0)
+ *     // do what only >= 1.5.x supports
+ * #endif
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#define MIPI_SYST_MAKE_VERSION_CODE(ma, mi, p) (((ma) << 16) | ((mi)<<8) | (p))
+
+/** Numeric SYS-T version code */
+#define MIPI_SYST_VERSION_CODE MIPI_SYST_MAKE_VERSION_CODE(\
+  MIPI_SYST_VERSION_MAJOR,\
+  MIPI_SYST_VERSION_MINOR,\
+  MIPI_SYST_VERSION_PATCH)
+
+/* Macros to trick numeric values like __LINE__ into a string
+ */
+#define _MIPI_SYST_STRINGIFY(x) #x
+#define _MIPI_SYST_CPP_TOSTR(x) _MIPI_SYST_STRINGIFY(x)
+
+#define _MIPI_SYST_VERSION_STRING(a, b, c)\
+  _MIPI_SYST_CPP_TOSTR(a)"."_MIPI_SYST_CPP_TOSTR(b)"."_MIPI_SYST_CPP_TOSTR(c)
+
+/** Textual version string */
+#define MIPI_SYST_VERSION_STRING \
+  _MIPI_SYST_VERSION_STRING(\
+    MIPI_SYST_VERSION_MAJOR,\
+    MIPI_SYST_VERSION_MINOR,\
+    MIPI_SYST_VERSION_PATCH)
+
+#ifndef MIPI_SYST_COMPILER_INCLUDED
+#include "mipi_syst/compiler.h"
+#endif
+
+/* String hash macros for compile time computation of catalog ID's.
+ * Notes:
+ *    These macros will only be used with optimized builds, otherwise
+ *    a lot of runtime code will be generated.
+ *
+ *    Only the last 64 bytes of the string are considered for hashing
+ */
+#define _MIPI_SYST_HASH1(s,i,x,l)  (x*65599u+(mipi_syst_u8)s[(i)<(l)?((l)-1-(i)):(l)])
+#define _MIPI_SYST_HASH4(s,i,x,l)  _MIPI_SYST_HASH1(s,i,_MIPI_SYST_HASH1(s,i+1,_MIPI_SYST_HASH1(s,i+2,_MIPI_SYST_HASH1(s,i+3,x,l),l),l),l)
+#define _MIPI_SYST_HASH16(s,i,x,l) _MIPI_SYST_HASH4(s,i,_MIPI_SYST_HASH4(s,i+4,_MIPI_SYST_HASH4(s,i+8,_MIPI_SYST_HASH4(s,i+12,x,l),l),l),l)
+#define _MIPI_SYST_HASH64(s,i,x,l) _MIPI_SYST_HASH16(s,i,_MIPI_SYST_HASH16(s,i+16,_MIPI_SYST_HASH16(s,i+32,_MIPI_SYST_HASH16(s,i+48,x,l),l),l),l)
+
+#define _MIPI_SYST_HASH_x65599(s,l) ((mipi_syst_u32)_MIPI_SYST_HASH64(s,0,0,l))
+
+#define _MIPI_SYST_HASH_AT_CPP_TIME(str, offset) (_MIPI_SYST_HASH_x65599(str, sizeof(str)-1) + (offset))
+#define _MIPI_SYST_HASH_AT_RUN_TIME(str, offset) (mipi_syst_hash_x65599(str, sizeof(str)-1) + (offset))
+
+#if defined(_MIPI_SYST_OPTIMIZER_ON)
+#define MIPI_SYST_HASH(a, b) _MIPI_SYST_HASH_AT_CPP_TIME((a), (b))
+#else
+#define MIPI_SYST_HASH(a, b) _MIPI_SYST_HASH_AT_RUN_TIME((a),(b))
+#endif
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/** Major Message Types
+ */
+enum mipi_syst_msgtype {
+  MIPI_SYST_TYPE_BUILD = 0,          /**< client build id message   */
+  MIPI_SYST_TYPE_SHORT32 = 1,        /**< value only message        */
+  MIPI_SYST_TYPE_STRING = 2,         /**< text message output       */
+  MIPI_SYST_TYPE_CATALOG = 3,        /**< catalog message output    */
+  MIPI_SYST_TYPE_RAW = 6,            /**< raw binary data           */
+  MIPI_SYST_TYPE_SHORT64 = 7,        /**<  value only message       */
+  MIPI_SYST_TYPE_CLOCK = 8,          /**< clock sync message        */
+
+  MIPI_SYST_TYPE_MAX
+};
+
+/** MIPI_SYST_TYPE_DEBUG_STRING Sub-Types
+ */
+enum mipi_syst_subtype_string {
+  MIPI_SYST_STRING_GENERIC = 1,        /**< string generic debug         */
+  MIPI_SYST_STRING_FUNCTIONENTER = 2,  /**< string is function name      */
+  MIPI_SYST_STRING_FUNCTIONEXIT = 3,   /**< string is function name      */
+  MIPI_SYST_STRING_INVALIDPARAM = 5,   /**< invalid SyS-T APIcall        */
+  MIPI_SYST_STRING_ASSERT = 7,         /**< Software Assert: failure     */
+  MIPI_SYST_STRING_PRINTF_32 = 11,     /**< printf with 32-bit packing   */
+  MIPI_SYST_STRING_PRINTF_64 = 12,     /**< printf with 64-bit packing   */
+
+  MIPI_SYST_STRING_MAX
+};
+
+/** MIPI_SYST_TYPE_CATALOG Sub-Types
+ */
+enum mipi_syst_subtype_catalog {
+  MIPI_SYST_CATALOG_ID32_P32 = 1,   /**< 32-bit catalog ID, 32-bit packing */
+  MIPI_SYST_CATALOG_ID64_P32 = 2,   /**< 64-bit catalog ID, 32-bit packing */
+  MIPI_SYST_CATALOG_ID32_P64 = 5,   /**< 32-bit catalog ID, 64-bit packing */
+  MIPI_SYST_CATALOG_ID64_P64 = 6,   /**< 64-bit catalog ID, 64-bit packing */
+
+  MIPI_SYST_CATALOG_MAX
+};
+
+/** MIPI_SYST_TYPE_CLOCK Sub-Types
+ */
+enum mipi_syst_subtype_clock{
+  MIPI_SYST_CLOCK_TRANSPORT_SYNC   =  1,  /**< SyS-T clock & frequency sync  */
+  MIPI_SYST_CLOCK_MAX
+};
+
+enum mipi_syst_subtype_build {
+  MIPI_SYST_BUILD_ID_COMPACT32  = 0, /**< compact32  build id       */
+  MIPI_SYST_BUILD_ID_COMPACT64  = 1, /**< compact64  build id       */
+  MIPI_SYST_BUILD_ID_LONG       = 2, /**< normal build  message     */
+  MIPI_SYST_BUILD_MAX
+};
+
+struct mipi_syst_header;
+struct mipi_syst_handle;
+struct mipi_syst_scatter_prog;
+
+/** 128-bit GUID style message origin ID */
+struct mipi_syst_guid {
+  union {
+    mipi_syst_u8  b[16];
+    mipi_syst_u64 ll[2];
+  } u;
+};
+
+/** GUID initializer code
+ *
+ * This macro simplifies converting a GUID from its string representation
+ * into the mipi_syst_guid data structure. The following example shows
+ * how the values from a GUID string are used with the macro. Each numeric
+ * component from the GUID string gets converted into a hex value parameter
+ * when invoking the macro.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.c}
+ *
+ *  // Guid: f614b99d-99a1-4c04-8c30-90999ab5fe05
+ *
+ *   struct mipi_syst_guid guid =
+ *      MIPI_SYST_GEN_GUID(0xf614b99d, 0x99a1, 0x4c04, 0x8c30, 0x90999ab5fe05);
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#define MIPI_SYST_GEN_GUID(l1, w1, w2, w3, l2) \
+  {{\
+    (mipi_syst_u8)((mipi_syst_u32)(l1) >> 24), \
+    (mipi_syst_u8)((mipi_syst_u32)(l1) >> 16), \
+    (mipi_syst_u8)((mipi_syst_u32)(l1) >>  8), \
+    (mipi_syst_u8)((mipi_syst_u32)(l1) >>  0), \
+    (mipi_syst_u8)((mipi_syst_u16)(w1) >>  8), \
+    (mipi_syst_u8)((mipi_syst_u16)(w1) >>  0), \
+    (mipi_syst_u8)((mipi_syst_u16)(w2) >>  8), \
+    (mipi_syst_u8)((mipi_syst_u16)(w2) >>  0), \
+    (mipi_syst_u8)((mipi_syst_u16)(w3) >>  8), \
+    (mipi_syst_u8)((mipi_syst_u16)(w3) >>  0), \
+    (mipi_syst_u8)((mipi_syst_u64)(l2) >> 40), \
+    (mipi_syst_u8)((mipi_syst_u64)(l2) >> 32), \
+    (mipi_syst_u8)((mipi_syst_u64)(l2) >> 24), \
+    (mipi_syst_u8)((mipi_syst_u64)(l2) >> 16), \
+    (mipi_syst_u8)((mipi_syst_u64)(l2) >>  8), \
+    (mipi_syst_u8)((mipi_syst_u64)(l2) >>  0)  \
+  }}
+
+ /** SyS-T client origin data
+  *
+  * This structure holds the GUID or header origin and unit data
+  * used by SyS-T handles. The structure gets passed into the handle
+  * creation functions to initialize the values that identify clients.
+  * @see MIPI_SYST_SET_HANDLE_GUID_UNIT
+  * @see MIPI_SYST_SET_HANDLE_MODULE_UNIT
+  * @see MIPI_SYST_SET_HANDLE_ORIGIN
+  */
+struct mipi_syst_origin {
+  struct mipi_syst_guid  guid;    /**< origin GUID or module value */
+  mipi_syst_u16   unit;           /**< unit value                  */
+};
+
+/** Origin structure initializer code using GUID
+*
+* This macro simplifies initializing a mipi_syst_origin structure. The
+* first 5 parameters are GUID values as used by the MIPI_SYST_GEN_GUID
+* macro. The last parameter is the unit value (11-Bits).
+* @see MIPI_SYST_GEN_GUID
+*
+*
+* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.c}
+*
+*  // Guid: {494E5443-B659-45AF-B786-9DB0786248AE}
+
+*
+*   struct mipi_syst_origin = origin
+*      MIPI_SYST_GEN_ORIGIN_GUID(
+*        0x494E5443, 0xB659, 0x45AF, 0xB786, 0x9DB0786248AE,
+*        0x1);
+* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+*/
+#define MIPI_SYST_GEN_ORIGIN_GUID(l1, w1, w2, w3, l2 , u) \
+  {\
+    MIPI_SYST_GEN_GUID(l1, w1, w2, w3, l2) ,\
+    u\
+  }
+
+/** Origin structure initializer code using header module value
+*
+* This macro simplifies initializing a mipi_syst_origin structure. The
+* first parameter is the header origin value (7-Bits). The second parameter
+* is the unit value (4-bits)
+* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~{.c}
+*
+*  // Guid: {494E5443-B659-45AF-B786-9DB0786248AE}
+
+*   #define MODULE_X 0x10
+*   struct mipi_syst_origin =
+*      MIPI_SYST_GEN_ORIGIN_MODULE(MODULE_X, 0x1);
+* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+*/
+#define MIPI_SYST_GEN_ORIGIN_MODULE(m , u) \
+  {\
+    MIPI_SYST_GEN_GUID(0,0,0, ((mipi_syst_u16)(m & 0x7F)) << 8, 0 ),\
+    u\
+  }
+/**
+ * Global state initialization hook definition
+ *
+ * This function gets called in the context of the mipi_syst_init() API
+ * function after the generic state members of the global state
+ * structure syst_hdr have been setup. It's purpose is to initialize the
+ * platform dependent portion of the state and other necessary
+ * platform specific initialization steps.
+ *
+ * @param systh Pointer to global state structure
+ * @param p user defined value or pointer to data
+ * @see  mipi_syst_header
+ */
+typedef void (MIPI_SYST_CALLCONV *mipi_syst_inithook_t)(struct mipi_syst_header *systh,
+    const void *p);
+
+/**
+ * Global state destroy hook definition
+ *
+ * This function gets called in the context of the mipi_syst_destroy() API
+ * function before the generic state members of the global state
+ * structure syst_hdr have been destroyed. Its purpose is to free resources
+ * used by the platform dependent portion of the global state.
+ *
+ * @param systh Pointer to global state structure
+ */
+typedef void (MIPI_SYST_CALLCONV *mipi_syst_destroyhook_t)(struct mipi_syst_header *systh);
+
+/**
+ * SyS-T handle state initialization hook definition
+ *
+ * This function gets called in the context of IO handle generation.
+ * Its purpose is to initialize the platform dependent portion of
+*  the handle and other necessary platform specific initialization steps.
+ *
+ * @param systh Pointer to new SyS-T handle
+ * @see syst_handle_t
+ */
+typedef void (*mipi_syst_inithandle_hook_t)(struct mipi_syst_handle *systh);
+
+/**
+ * SyS-T handle state release hook definition
+ *
+ * This function gets called when a handle is about to be destroyed..
+ * Its purpose is to free any resources allocated during the handle
+ * generation.
+ *
+ * @param systh Pointer to handle that is destroyed
+ * @see syst_handle_t
+ */
+typedef void (*mipi_syst_releasehandle_hook_t)(struct mipi_syst_handle *systh);
+
+/**
+ * Low level message write routine definition
+ *
+ * This function is called at the end of an instrumentation API to output
+ * the raw message data.
+ *
+ * @param systh pointer to a SyS-T handle structure used in the API call,
+ * @param scatterprog pointer to a list of scatter write instructions that
+ *                    encodes how to convert the descriptor pointer by
+ *                    pdesc into raw binary data. This list doesn't include
+ *                    the mandatory first 32 tag byte value pointed by pdesc.
+ * @param pdesc pointer to a message descriptor, which containing at least
+ *              the 32-bit message tag data
+ */
+typedef void (*mipi_syst_msg_write_t)(
+    struct mipi_syst_handle *systh,
+    struct mipi_syst_scatter_prog *scatterprog,
+    const void *pdesc);
+
+#ifdef __cplusplus
+} /* extern C */
+#endif
+#ifndef MIPI_SYST_PLATFORM_INCLUDED
+
+/**
+ * @defgroup PCFG_Config  Platform Feature Configuration Defines
+ *
+ * Defines to customize the SyS-T feature set to match the platform needs.
+ *
+ * Each optional library feature can be disabled by not defining the related
+ * MIPI_SYST_PCFG_ENABLE define. Removing unused features in this way reduces
+ * both memory footprint and runtime overhead of SyS-T.
+ */
+
+/**
+ * @defgroup PCFG_Global Platform Wide Configuration
+ * @ingroup  PCFG_Config
+ *
+ * These defines enable global features in the SyS-T library.
+ * @{
+ */
+
+
+ /**
+ * Extend Platform global SyS-T data state
+ *
+ * This define extends the global SyS-T state data structure
+ * mipi_syst_header with platform private content. A platform typically
+ * stores data for SyS-T handle creation processing in this structure.
+ *
+ * Note: This data is not touched by the library code itself, but typically
+ * is used by platform  hook functions for handle creation and destruction.
+ * **These hook function calls are not lock protected and may happen
+ * concurrently!**  The hook functions need to implement locking if they
+ *  modify the platform state data.
+ *
+ * The platform example uses #mipi_syst_platform_state as data state extension.
+ */
+#define MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA
+#undef MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA
+/**
+ * Extend SyS-T handle data state
+ *
+ * This define extends the SyS-T handle state data structure
+ * mipi_syst_handle with platform private content. A platform typically
+ * stores data for fast trace hardware access in the handle data, for
+ * example a volatile pointer to an MMIO space.
+ *
+ * The platform example uses #mipi_syst_platform_handle as handle state
+ * extension.
+ */
+#define MIPI_SYST_PCFG_ENABLE_PLATFORM_HANDLE_DATA
+
+/**
+ * Enable HEAP usage for handle generation
+ *
+ * This macro tells the SyS-T library to enable the heap allocation handle
+ * creation API #MIPI_SYST_ALLOC_HANDLE.
+ * The platform must provide the macros #MIPI_SYST_HEAP_MALLOC and
+ * #MIPI_SYST_HEAP_FREE to point SyS-T to the platform malloc and free
+ * functions.
+ *
+ * Note: In OS kernel space environments, you must use unpaged memory
+ * allocation functions.
+ */
+#define MIPI_SYST_PCFG_ENABLE_HEAP_MEMORY
+#undef MIPI_SYST_PCFG_ENABLE_HEAP_MEMORY
+/* MSVC and GNU compiler 64-bit mode */
+
+/**
+ * Enable 64-bit instruction addresses
+ *
+ * Set this define if running in 64-bit code address space.
+ */
+#if defined(_WIN64) || defined(__x86_64__) || defined (__LP64__)
+#define MIPI_SYST_PCFG_ENABLE_64BIT_ADDR
+#endif
+/**
+ * Enable atomic 64-bit write operations
+ *
+ * Set this define if your platform supports an atomic 64-bit data write
+ * operation. This results in fewer MMIO accesses.The SyS-T library
+ * defaults to 2 consecutive 32-Bit writes otherwise.
+ */
+#if defined(_WIN64) || defined(__x86_64__) || defined (__LP64__)
+#define MIPI_SYST_PCFG_ENABLE_64BIT_IO
+#endif
+
+/**
+ * Enable helper function code inlining
+ *
+ * Set this define if speed is more important than code size on your platform.
+ * It causes several helper function to get inlined, producing faster, but
+ * also larger, code.
+ */
+#define MIPI_SYST_PCFG_ENABLE_INLINE
+
+/** @} */
+
+/**
+ * @defgroup PCFG_ApiSet Supported API sets
+ * @ingroup  PCFG_Config
+ *
+ * These defines enable API sets in the SyS-T library. They are set by default
+ * depending on the SyS-T API conformance level. The level is specified using
+ * the define #MIPI_SYST_CONFORMANCE_LEVEL.
+ * @{
+ */
+
+#if MIPI_SYST_CONFORMANCE_LEVEL > 10
+ /**
+ * Use SyS-T scatter write output function
+ *
+ * The library comes with an output routine that is intended to write data out
+ * to an MMIO space. It simplifies a SyS-T platform integration as
+ * only low-level access macros must be provided for outputting data. These
+ * macros follow MIPI System Trace Protocol (STP) naming convention, also
+ * non STP generators can use this interface.
+ *
+ * These low level output macros are:
+ *
+ * #MIPI_SYST_OUTPUT_D32MTS, #MIPI_SYST_OUTPUT_D64MTS,
+ * #MIPI_SYST_OUTPUT_D32TS, #MIPI_SYST_OUTPUT_D64,
+ * #MIPI_SYST_OUTPUT_D32, #MIPI_SYST_OUTPUT_D16, #MIPI_SYST_OUTPUT_D8 and
+ * #MIPI_SYST_OUTPUT_FLAG
+ *
+ * Note: This version of the write function always starts messages
+ * using a 32-bit timestamped record also other sized timestamped
+ * packets are allowed by the SyS-T specification.
+ */
+#define MIPI_SYST_PCFG_ENABLE_DEFAULT_SCATTER_WRITE
+
+/**
+ * Enable the Catalog API for 32-Bit Catalog IDs.
+ */
+#define MIPI_SYST_PCFG_ENABLE_CATID32_API
+
+/**
+ * Enable the Catalog API for 64-Bit Catalog IDs.
+ */
+#define MIPI_SYST_PCFG_ENABLE_CATID64_API
+
+/**
+ * Enable plain UTF-8 string output APIs.
+ */
+#define MIPI_SYST_PCFG_ENABLE_STRING_API
+
+/**
+ * Enable raw data output APIs
+ */
+#define MIPI_SYST_PCFG_ENABLE_WRITE_API
+
+/**
+ * Enable Build API
+ */
+#define MIPI_SYST_PCFG_ENABLE_BUILD_API
+#endif /* MIPI_SYST_CONFORMANCE_LEVEL > 10 */
+
+#if  MIPI_SYST_CONFORMANCE_LEVEL > 20
+ /**
+ * Enable printf API support
+ *
+ * Note:
+ * Enabling printf requires compiler var_arg support as defined by the
+ * header files stdarg.h stddef.h.
+ */
+
+#define MIPI_SYST_PCFG_ENABLE_PRINTF_API
+#undef MIPI_SYST_PCFG_ENABLE_PRINTF_API
+/**
+ * Maximum size of printf payload in bytes.
+ * Adjust this value if larger strings shall be supported by the library.
+ * The buffer space is located in stack memory when calling one of the printf
+ * style APIs.
+ */
+#define MIPI_SYST_PCFG_PRINTF_ARGBUF_SIZE 1024
+
+#endif /* #if MIPI_SYST_CONFORMANCE_LEVEL > 20 */
+
+/* @} */
+
+/**
+ * @defgroup PCFG_Message Optional Message Attributes
+ * @ingroup  PCFG_Config
+ *
+ * These defines enable optional message components. They are set by default
+ * depending on the SyS-T API conformance level. The level is specified using
+ * the define #MIPI_SYST_CONFORMANCE_LEVEL.
+ * @{
+ */
+
+#if MIPI_SYST_CONFORMANCE_LEVEL > 10
+/**
+ * Enable 128-bit origin GUID support.
+ */
+#define MIPI_SYST_PCFG_ENABLE_ORIGIN_GUID
+
+/**
+ * Enable the API variants that send file:line ID pair location records.
+ */
+#define MIPI_SYST_PCFG_ENABLE_LOCATION_RECORD
+#undef MIPI_SYST_PCFG_ENABLE_LOCATION_RECORD
+/**
+ * Enable the API variants that send the address of the instrumentation location.
+ *
+ * This API requires #MIPI_SYST_PCFG_ENABLE_LOCATION_RECORD to be set as well.
+ * It uses its own define as it additionally requires the function
+ * @ref mipi_syst_return_addr() to be implemented for your platform.
+ */
+#define MIPI_SYST_PCFG_ENABLE_LOCATION_ADDRESS
+#undef MIPI_SYST_PCFG_ENABLE_LOCATION_ADDRESS
+/**
+ * Enable protocol timestamp.
+ *
+ * This option adds a timestamp into the SyS-T protocol. This
+ * option is used if the SyS-T protocol is not embedded into a hardware
+ * timestamped trace protocol like MIPI STP or if the HW timestamp cannot
+ * be used for other reasons. Setting this option creates the need to define
+ * the macros #MIPI_SYST_PLATFORM_CLOCK and #MIPI_SYST_PLATFORM_FREQ to
+ *  return a 64-bit clock tick value and its frequency.
+ */
+#define MIPI_SYST_PCFG_ENABLE_TIMESTAMP
+
+#if defined(_DOXYGEN_)  /*  only for doxygen, remove the #if to enable */
+ /**
+ * Enable generation of length field
+ *
+ * Set this define if the message data shall include the optional length
+ * field that indicates how many payload bytes follow.
+ */
+#define MIPI_SYST_PCFG_LENGTH_FIELD
+#endif
+
+#endif
+
+#if MIPI_SYST_CONFORMANCE_LEVEL > 20
+/**
+ * Enable message data CRC32 generation.
+ */
+#define MIPI_SYST_PCFG_ENABLE_CHECKSUM
+
+#endif /* #if MIPI_SYST_CONFORMANCE_LEVEL */
+
+/** @} */
+
+#include "Platform.h"
+#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(MIPI_SYST_PCFG_ENABLE_INLINE)
+#define MIPI_SYST_INLINE static MIPI_SYST_CC_INLINE
+#else
+#define MIPI_SYST_INLINE MIPI_SYST_EXPORT
+#endif
+
+/** SyS-T global state structure.
+ * This structure is holding the global SyS-T library state
+ */
+struct mipi_syst_header {
+  mipi_syst_u32 systh_version; /**< SyS-T version ID            */
+
+#if defined(MIPI_SYST_PCFG_ENABLE_PLATFORM_HANDLE_DATA)
+  mipi_syst_inithandle_hook_t systh_inith;       /**< handle init hook function*/
+  mipi_syst_releasehandle_hook_t systh_releaseh; /**< handle release hook      */
+#endif
+
+#if MIPI_SYST_CONFORMANCE_LEVEL > 10
+  mipi_syst_msg_write_t systh_writer;            /**< message output routine   */
+#endif
+#if defined(MIPI_SYST_PCFG_ENABLE_PLATFORM_STATE_DATA)
+  struct mipi_syst_platform_state systh_platform;
+  /**< platform specific state    */
+#endif
+};
+
+/**
+ * Message data header tag definition
+ *
+ * Each SyS-T message starts with a 32-bit message tag. The tag defines the
+ * message originator and decoding information for the data following
+ * the tag.
+ */
+
+struct mipi_syst_msg_tag {
+#if defined(MIPI_SYST_BIG_ENDIAN)
+  mipi_syst_u32 et_res31 : 1;    /**< reserved for future use        */
+  mipi_syst_u32 et_res30 : 1;    /**< reserved for future use        */
+  mipi_syst_u32 et_subtype : 6;  /**< type dependent sub category    */
+  mipi_syst_u32 et_guid : 1;     /**< 128-bit GUID present           */
+  mipi_syst_u32 et_modunit : 11; /**< unit for GUID or module:unit   */
+  mipi_syst_u32 et_timestamp : 1;/**< indicate 64-bit timestamp      */
+  mipi_syst_u32 et_chksum : 1;   /**< indicate 32-bit CRC            */
+  mipi_syst_u32 et_length : 1;   /**< indicate length field          */
+  mipi_syst_u32 et_location : 1; /**< indicate location information  */
+  mipi_syst_u32 et_res7 : 1;     /**< reserved for future use        */
+  mipi_syst_u32 et_severity : 3; /**< severity level of message      */
+  mipi_syst_u32 et_type : 4;     /**< SyS-T message type ID          */
+#else
+  mipi_syst_u32 et_type : 4;     /**< SyS-T message type ID          */
+  mipi_syst_u32 et_severity : 3; /**< severity level of message      */
+  mipi_syst_u32 et_res7 : 1;     /**< reserved for future use        */
+  mipi_syst_u32 et_location : 1; /**< indicate location information  */
+  mipi_syst_u32 et_length : 1;   /**< indicate length field          */
+  mipi_syst_u32 et_chksum : 1;   /**< indicate 32-bit CRC            */
+  mipi_syst_u32 et_timestamp : 1;/**< indicate 64-bit timestamp      */
+  mipi_syst_u32 et_modunit : 11; /**< unit for GUID or module:unit   */
+  mipi_syst_u32 et_guid : 1;     /**< 128-bit GUID present           */
+  mipi_syst_u32 et_subtype : 6;  /**< type dependent sub category    */
+  mipi_syst_u32 et_res30 : 1;    /**< reserved for future use        */
+  mipi_syst_u32 et_res31 : 1;    /**< reserved for future use        */
+#endif
+};
+#define _MIPI_SYST_MK_MODUNIT_ORIGIN(m,u) (((u) & 0xF)|(m<<4))
+
+/**
+ * Message severity level enumeration
+ */
+enum mipi_syst_severity {
+  MIPI_SYST_SEVERITY_MAX = 0,    /**< no assigned severity       */
+  MIPI_SYST_SEVERITY_FATAL = 1,  /**< critical error level       */
+  MIPI_SYST_SEVERITY_ERROR = 2,  /**< error message level        */
+  MIPI_SYST_SEVERITY_WARNING = 3,/**< warning message level      */
+  MIPI_SYST_SEVERITY_INFO = 4,   /**< information message level  */
+  MIPI_SYST_SEVERITY_USER1 = 5,  /**< user defined level 5       */
+  MIPI_SYST_SEVERITY_USER2 = 6,  /**< user defined level 6       */
+  MIPI_SYST_SEVERITY_DEBUG = 7   /**< debug information level    */
+};
+
+/**
+ * Location information inside a message (64-bit format)
+ * Location is either the source position of the instrumentation call, or
+ * the call instruction pointer value.
+ */
+union mipi_syst_msglocation32 {
+  struct {
+#if defined(MIPI_SYST_BIG_ENDIAN)
+    mipi_syst_u16 etls_lineNo; /**< line number in file       */
+    mipi_syst_u16 etls_fileID; /**< ID of instrumented file   */
+#else
+    mipi_syst_u16 etls_fileID; /**< ID of instrumented file   */
+    mipi_syst_u16 etls_lineNo; /**< line number in file       */
+#endif
+  } etls_source_location;
+
+  mipi_syst_u32 etls_code_location:32; /**< instruction pointer value */
+};
+
+/**
+ * Location information inside a message (32-bit format)
+ * Location is either the source position of the instrumentation call, or
+ * the call instruction pointer value.
+ */
+union mipi_syst_msglocation64 {
+  struct {
+#if defined(MIPI_SYST_BIG_ENDIAN)
+    mipi_syst_u32 etls_lineNo; /**< line number in file       */
+    mipi_syst_u32 etls_fileID; /**< ID of instrumented file   */
+#else
+    mipi_syst_u32 etls_fileID; /**< ID of instrumented file   */
+    mipi_syst_u32 etls_lineNo; /**< line number in file       */
+#endif
+  } etls_source_location;
+  mipi_syst_u64 etls_code_location; /**< instruction pointer value */
+};
+
+/**
+ * Location information record descriptor
+ */
+struct mipi_syst_msglocation {
+  /** Message format
+   * 0 = 16-Bit file and 16-Bit line (total: 32-bit)
+   * 1 = 32-Bit file and 32-Bit line (total: 64-bit)
+   * 2 = 32-bit code address
+   * 3 = 64-bit code address
+   */
+  mipi_syst_u8 el_format;
+  union {
+    union mipi_syst_msglocation32 loc32; /**< data for 32-bit variant  */
+    union mipi_syst_msglocation64 loc64; /**< data for 64-bit variant  */
+  } el_u;
+};
+
+/** internal handle state flags
+ */
+struct mipi_syst_handle_flags {
+  mipi_syst_u32 shf_alloc:1; /**< set to 1 if heap allocated handle */
+};
+
+/** SyS-T connection handle state structure
+ *
+ * This structure connects the instrumentation API with the underlying SyS-T
+ * infrastructure. It plays a similar role to a FILE * in traditional
+ * C file IO.
+ */
+ struct mipi_syst_handle {
+  struct mipi_syst_header* systh_header;     /**< global state            */
+  struct mipi_syst_handle_flags systh_flags; /**< handle state            */
+  struct mipi_syst_msg_tag systh_tag;        /**< tag flags               */
+
+#if defined(MIPI_SYST_PCFG_ENABLE_ORIGIN_GUID)
+  struct mipi_syst_guid systh_guid;          /**< module GUID             */
+#endif
+
+#if defined(MIPI_SYST_PCFG_ENABLE_LOCATION_RECORD)
+  struct mipi_syst_msglocation systh_location;   /**< location record     */
+#endif
+
+  mipi_syst_u32 systh_param_count;          /**< number of parameters     */
+  mipi_syst_u32 systh_param[6];             /**< catalog msg parameters   */
+
+#if defined(MIPI_SYST_PCFG_ENABLE_PLATFORM_HANDLE_DATA)
+  struct mipi_syst_platform_handle systh_platform;
+            /**< platform specific state  */
+#endif
+};
+
+
+#ifdef __cplusplus
+} /* extern C */
+#endif
+#ifndef MIPI_SYST_API_INCLUDED
+#include "mipi_syst/api.h"
+#endif
+
+typedef struct mipi_syst_header MIPI_SYST_HEADER;
+typedef struct mipi_syst_handle MIPI_SYST_HANDLE;
+typedef enum mipi_syst_severity MIPI_SYST_SEVERITY;
+typedef struct mipi_syst_guid MIPI_SYST_GUID;
+typedef struct mipi_syst_msg_tag MIPI_SYST_MSG_TAG;
+typedef struct mipi_syst_handle_flags MIPI_SYST_HANDLE_FLAGS;
+#endif
diff --git a/MdePkg/Library/MipiSysTLib/mipisyst b/MdePkg/Library/MipiSysTLib/mipisyst
new file mode 160000
index 0000000000..370b5944c0
--- /dev/null
+++ b/MdePkg/Library/MipiSysTLib/mipisyst
@@ -0,0 +1 @@
+Subproject commit 370b5944c046bab043dd8b133727b2135af7747a
diff --git a/MdePkg/MdePkg.ci.yaml b/MdePkg/MdePkg.ci.yaml
index 035c34b3ad..f024b48685 100644
--- a/MdePkg/MdePkg.ci.yaml
+++ b/MdePkg/MdePkg.ci.yaml
@@ -10,7 +10,10 @@
 {
     ## options defined .pytool/Plugin/LicenseCheck
     "LicenseCheck": {
-        "IgnoreFiles": []
+        "IgnoreFiles": [
+            # This file is copied from mipi sys-T submodule and generated by python script with customization.
+            "Library/MipiSysTLib/mipi_syst.h"
+        ]
     },
     "EccCheck": {
         ## Exception sample looks like below:
@@ -68,7 +71,8 @@
             "Include/Library/SafeIntLib.h",
             "Include/Protocol/DebugSupport.h",
             "Test/UnitTest/Library/BaseSafeIntLib/TestBaseSafeIntLib.c",
-            "Library/BaseFdtLib"
+            "Library/BaseFdtLib",
+            "Library/MipiSysTLib/mipi_syst.h"
         ]
     },
     ## options defined ci/Plugin/CompilerPlugin
@@ -166,6 +170,7 @@
         "IgnoreStandardPaths": [],   # Standard Plugin defined paths that should be ignore
         "AdditionalIncludePaths": [] # Additional paths to spell check (wildcards supported)
     },
+
     # options defined in .pytool/Plugin/UncrustifyCheck
     "UncrustifyCheck": {
         "IgnoreFiles": [
@@ -175,7 +180,8 @@
             "Library/BaseFdtLib/stddef.h",
             "Library/BaseFdtLib/stdint.h",
             "Library/BaseFdtLib/stdlib.h",
-            "Library/BaseFdtLib/string.h"
+            "Library/BaseFdtLib/string.h",
+            "mipi_syst.h"
         ]
     }
 }
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index d6c4179b2a..597f4f7137 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -28,6 +28,7 @@
   Include
   Test/UnitTest/Include
   Test/Mock/Include
+  Library/MipiSysTLib/mipisyst/library/include
 
 [Includes.IA32]
   Include/Ia32
@@ -293,6 +294,14 @@
   #
   FdtLib|Include/Library/FdtLib.h
 
+  ##  @libraryclass  Provides general mipi sys-T services.
+  #
+  MipiSysTLib|Include/Library/MipiSysTLib.h
+
+  ##  @libraryclass  Provides API to output Trace Hub debug message.
+  #
+  TraceHubDebugSysTLib|Include/Library/TraceHubDebugSysTLib.h
+
 [LibraryClasses.IA32, LibraryClasses.X64, LibraryClasses.AARCH64]
   ##  @libraryclass  Provides services to generate random number.
   #
diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc
index b38c863812..902a39cffc 100644
--- a/MdePkg/MdePkg.dsc
+++ b/MdePkg/MdePkg.dsc
@@ -184,6 +184,7 @@
   MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf
   MdePkg/Library/MmUnblockMemoryLib/MmUnblockMemoryLibNull.inf
   MdePkg/Library/TdxLib/TdxLib.inf
+  MdePkg/Library/MipiSysTLib/MipiSysTLib.inf
 
 [Components.EBC]
   MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsic.inf
diff --git a/ReadMe.rst b/ReadMe.rst
index d46c534229..ed1d482245 100644
--- a/ReadMe.rst
+++ b/ReadMe.rst
@@ -97,6 +97,7 @@ that are covered by additional licenses.
 -  `UnitTestFrameworkPkg/Library/SubhookLib/subhook <https://github.com/Zeex/subhook/blob/83d4e1ebef3588fae48b69a7352cc21801cb70bc/LICENSE.txt>`__
 -  `RedfishPkg/Library/JsonLib/jansson <https://github.com/akheron/jansson/blob/2882ead5bb90cf12a01b07b2c2361e24960fae02/LICENSE>`__
 -  `MdePkg/Library/BaseFdtLib/libfdt <https://github.com/devicetree-org/pylibfdt/blob/f39368a217496d32c4091a2dba4045b60649e3a5/BSD-2-Clause>`__
+-  `MdePkg/Library/MipiSysTLib/mipisyst <https://github.com/MIPI-Alliance/public-mipi-sys-t/blob/aae857d0d05ac65152ed24992a4acd834a0a107c/LICENSE>`__
 
 The EDK II Project is composed of packages. The maintainers for each package
 are listed in `Maintainers.txt <Maintainers.txt>`__.
-- 
2.39.2.windows.1