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UefiCpuPkg: Add definitions for EDKII microcode patch HOB 

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2430

This commit will add the definitions for EDKII microcode patch HOB.

The intention of adding this HOB is to provide a scheme to store the below
information:

A. The base address and size of the microcode patches that are being
   loaded (from flash) into memory;
B. The information of detected microcode patch for each processor within
   the system.

The producer of the HOB will be the UefiCpuPkg/MpInitLib (where the load,
detect and apply of the microcode happen). The consumer of the HOB can be
modules that want to detect/apply the microcode patch by themselves again
later during the boot flow.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Hao A Wu 2019-12-23 10:52:14 +08:00 committed by mergify[bot]
parent d786a17232
commit 253909974a
2 changed files with 47 additions and 0 deletions
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44
UefiCpuPkg/Include/Guid/MicrocodePatchHob.h Normal file
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@ -0,0 +1,44 @@
/** @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

3
UefiCpuPkg/UefiCpuPkg.dec
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@ -63,6 +63,9 @@
## Include/Guid/CpuFeaturesInitDone.h
gEdkiiCpuFeaturesInitDoneGuid = { 0xc77c3a41, 0x61ab, 0x4143, { 0x98, 0x3e, 0x33, 0x39, 0x28, 0x6, 0x28, 0xe5 }}
## Include/Guid/MicrocodePatchHob.h
gEdkiiMicrocodePatchHobGuid = { 0xd178f11d, 0x8716, 0x418e, { 0xa1, 0x31, 0x96, 0x7d, 0x2a, 0xc4, 0x28, 0x43 }}
[Protocols]
## Include/Protocol/SmmCpuService.h
gEfiSmmCpuServiceProtocolGuid = { 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 }}