Add NULL instance to pass build.

Cc: Jeff Fan <jeff....@intel.com>
Cc: Feng Tian <feng.t...@intel.com>
Cc: Star Zeng <star.z...@intel.com>
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Chao Zhang <chao.b.zh...@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen....@intel.com>
---
 UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c   
| 42 ++++++++++++++++++++
 UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf 
| 40 +++++++++++++++++++
 UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni 
| 21 ++++++++++
 3 files changed, 103 insertions(+)

diff --git 
a/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c 
b/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c
new file mode 100644
index 0000000..1d8312a
--- /dev/null
+++ 
b/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c
@@ -0,0 +1,42 @@
+/** @file
+  Microcode flash device access library NULL instance.
+
+  Copyright (c) 2016, 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 <PiDxe.h>
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/MicrocodeFlashAccessLib.h>
+
+/**
+  Perform microcode write opreation.
+
+  @param FlashAddress      The address of flash device to be accessed.
+  @param Buffer            The pointer to the data buffer.
+  @param Length            The length of data buffer in bytes.
+
+  @retval EFI_SUCCESS           The operation returns successfully.
+  @retval EFI_WRITE_PROTECTED   The flash device is read only.
+  @retval EFI_UNSUPPORTED       The flash device access is unsupported.
+  @retval EFI_INVALID_PARAMETER The input parameter is not valid.
+**/
+EFI_STATUS
+EFIAPI
+MicrocodeFlashWrite(
+  IN EFI_PHYSICAL_ADDRESS         FlashAddress,
+  IN VOID                         *Buffer,
+  IN UINTN                        Length
+  )
+{
+  CopyMem((VOID *)(UINTN)(FlashAddress), Buffer, Length);
+  return EFI_SUCCESS;
+}
diff --git 
a/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf
 
b/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf
new file mode 100644
index 0000000..a4a47e0
--- /dev/null
+++ 
b/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf
@@ -0,0 +1,40 @@
+## @file
+#  Microcode flash device access library.
+#
+#  Microcode flash device access library NULL instance.
+#
+#  Copyright (c) 2016, 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                      = MicrocodeFlashAccessLibNull
+  MODULE_UNI_FILE                = MicrocodeFlashAccessLibNull.uni
+  FILE_GUID                      = 6F871ADD-9D86-4676-8BAD-68E2E451FC5B
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = MicrocodeFlashAccessLib
+
+#
+# The following information is for reference only and not required by the 
build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
+#
+
+[Sources]
+  MicrocodeFlashAccessLibNull.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  UefiCpuPkg/UefiCpuPkg.dec
+
+[LibraryClasses]
+  BaseMemoryLib
diff --git 
a/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni
 
b/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni
new file mode 100644
index 0000000..cc4195c
--- /dev/null
+++ 
b/UefiCpuPkg/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni
@@ -0,0 +1,21 @@
+// /** @file
+//  Microcode flash device access library.
+//
+//  Microcode flash device access library NULL instance.
+//
+// Copyright (c) 2016, 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.
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "Microcode flash 
device access library."
+
+#string STR_MODULE_DESCRIPTION          #language en-US "Microcode flash 
device access library NULL instance."
+
-- 
2.7.4.windows.1

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