X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=UefiCpuPkg%2FLibrary%2FMpInitLib%2FDxeMpLib.c;h=a987c3210957c042b3616d34659c2f06aaeed066;hb=c788c2b1ade657e01a63001e8fee621001404af7;hp=b17e287bbf49c2e079fbbfd1f10fae75b076886c;hpb=ee0c39fa110f80aa8c185d0b0805223e2af3b659;p=mirror_edk2.git

diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
index b17e287bbf..a987c32109 100644
--- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c
@@ -1,7 +1,7 @@
 /** @file
   MP initialize support functions for DXE phase.
 
-  Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -816,3 +816,27 @@ MpInitLibEnableDisableAP (
 
   return Status;
 }
+
+/**
+  This funtion will try to invoke platform specific microcode shadow logic to
+  relocate microcode update patches into memory.
+
+  @param[in] CpuMpData  The pointer to CPU MP Data structure.
+
+  @retval EFI_SUCCESS              Shadow microcode success.
+  @retval EFI_OUT_OF_RESOURCES     No enough resource to complete the operation.
+  @retval EFI_UNSUPPORTED          Can't find platform specific microcode shadow
+                                   PPI/Protocol.
+**/
+EFI_STATUS
+PlatformShadowMicrocode (
+  IN OUT CPU_MP_DATA             *CpuMpData
+  )
+{
+  //
+  // There is no DXE version of platform shadow microcode protocol so far.
+  // A platform which only uses DxeMpInitLib instance could only supports
+  // the PCD based microcode shadowing.
+  //
+  return EFI_UNSUPPORTED;
+}