X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=UefiCpuPkg%2FInclude%2FGuid%2FMicrocodePatchHob.h;fp=UefiCpuPkg%2FInclude%2FGuid%2FMicrocodePatchHob.h;h=2d307fbffbf1d8711166103800df36ae25be9c06;hp=0000000000000000000000000000000000000000;hb=253909974a0e2e9c60fa78e57c0c46fef2877332;hpb=d786a1723203e91c92615c58d217e35b0d894004

diff --git a/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h b/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h
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+++ b/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h
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+/** @file
+  The microcode patch HOB is used to store the information of:
+    A. Base address and size of the loaded microcode patches data;
+    B. Detected microcode patch for each processor within system.
+
+  Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _MICROCODE_PATCH_HOB_H_
+#define _MICROCODE_PATCH_HOB_H_
+
+extern EFI_GUID gEdkiiMicrocodePatchHobGuid;
+
+//
+// The EDKII microcode patch HOB will be produced by MpInitLib and it can be
+// consumed by modules that want to detect/apply microcode patches.
+//
+typedef struct {
+  //
+  // The base address of the microcode patches data after being loaded into
+  // memory.
+  //
+  UINT64    MicrocodePatchAddress;
+  //
+  // The total size of the loaded microcode patches.
+  //
+  UINT64    MicrocodePatchRegionSize;
+  //
+  // The number of processors within the system.
+  //
+  UINT32    ProcessorCount;
+  //
+  // An array with 'ProcessorCount' elements that stores the offset (with
+  // regard to 'MicrocodePatchAddress') of the detected microcode patch
+  // (including the CPU_MICROCODE_HEADER data structure) for each processor.
+  // If no microcode patch is detected for certain processor, the relating
+  // element will be set to MAX_UINT64.
+  //
+  UINT64    ProcessorSpecificPatchOffset[0];
+} EDKII_MICROCODE_PATCH_HOB;
+
+#endif