From c7829aa0e90c19241f9d08e22b14874837de487b Mon Sep 17 00:00:00 2001
From: Jiewen Yao <jiewen.yao@intel.com>
Date: Wed, 21 Sep 2016 11:16:02 +0800
Subject: [PATCH] UefiCpuPkg/MicrocodeFlashAccessLib: Add NULL
 MicrocodeFlashAccessLib.

Add NULL instance to pass build.

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
---
 .../MicrocodeFlashAccessLibNull.c             | 42 +++++++++++++++++++
 .../MicrocodeFlashAccessLibNull.inf           | 40 ++++++++++++++++++
 .../MicrocodeFlashAccessLibNull.uni           | 21 ++++++++++
 3 files changed, 103 insertions(+)
 create mode 100644 UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c
 create mode 100644 UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf
 create mode 100644 UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni

diff --git a/UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c b/UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.c
new file mode 100644
index 0000000000..7a5ec152d7
--- /dev/null
+++ b/UefiCpuPkg/Feature/Capsule/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[in] FlashAddress      The address of flash device to be accessed.
+  @param[in] Buffer            The pointer to the data buffer.
+  @param[in] 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/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf b/UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.inf
new file mode 100644
index 0000000000..a4a47e0737
--- /dev/null
+++ b/UefiCpuPkg/Feature/Capsule/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/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni b/UefiCpuPkg/Feature/Capsule/Library/MicrocodeFlashAccessLibNull/MicrocodeFlashAccessLibNull.uni
new file mode 100644
index 0000000000..cc4195c412
--- /dev/null
+++ b/UefiCpuPkg/Feature/Capsule/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."
+
-- 
2.39.2