Copy MpInformation.h and gMpInformationHobGuid to
UefiCpuPkg.
Previously, the HOB is defined, created and consumed
only in StandaloneMmPkg. The HOB contains the number
of processors and EFI_PROCESSOR_INFORMATION structure.
This is the same as the information that PiSmmCpuDxeSmm
uses EfiMpServiceProtocolGuid to get.
The incoming plan is to create gMpInformationHobGuid
for both StandaloneMm and legacy DXE_SMM in early
phase. Then PiSmmCpuDxeSmm can consume the hob, which can
simplified code logic about consuming MpService Protocol.
So move this HOB definition to UefiCpuPkg.
Signed-off-by: Dun Tan <dun....@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
Cc: Gerd Hoffmann <kra...@redhat.com>
---
UefiCpuPkg/Include/Guid/MpInformation.h | 35
+++++++++++++++++++++++++++++++++++
UefiCpuPkg/UefiCpuPkg.dec | 3 +++
2 files changed, 38 insertions(+)
diff --git a/UefiCpuPkg/Include/Guid/MpInformation.h
b/UefiCpuPkg/Include/Guid/MpInformation.h
new file mode 100644
index 0000000000..f0a6fdb24e
--- /dev/null
+++ b/UefiCpuPkg/Include/Guid/MpInformation.h
@@ -0,0 +1,35 @@
+/** @file
+ EFI MP information protocol provides a lightweight MP_SERVICES_PROTOCOL.
+
+ MP information protocol only provides static information of MP processor.
+
+ Copyright (c) 2009 - 2023, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _MP_INFORMATION_H_
+#define _MP_INFORMATION_H_
+
+#include <Protocol/MpService.h>
+#include <PiPei.h>
+#include <Ppi/SecPlatformInformation.h>
+
+#define MP_INFORMATION_GUID \
+ { \
+ 0xba33f15d, 0x4000, 0x45c1, {0x8e, 0x88, 0xf9, 0x16, 0x92, 0xd4, 0x57,
0xe3} \
+ }
+
+#pragma pack(1)
+typedef struct {
+ UINT64 NumberOfProcessors;
+ UINT64 NumberOfEnabledProcessors;
+ EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer[];
+} MP_INFORMATION_HOB_DATA;
+#pragma pack()
+
+extern EFI_GUID gMpInformationHobGuid;
+
+#endif
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index 0b5431dbf7..92860b4c6e 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -85,6 +85,9 @@
## Include/Guid/SmmBaseHob.h
gSmmBaseHobGuid = { 0xc2217ba7, 0x03bb, 0x4f63, {0xa6, 0x47, 0x7c,
0x25, 0xc5, 0xfc, 0x9d, 0x73 }}
+ ## Include/Guid/MpInformation.h
+ gMpInformationHobGuid = { 0xba33f15d, 0x4000, 0x45c1, { 0x8e, 0x88,
0xf9, 0x16, 0x92, 0xd4, 0x57, 0xe3 }}
+
[Protocols]
## Include/Protocol/SmmCpuService.h
gEfiSmmCpuServiceProtocolGuid = { 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94,
0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 }}
--
2.31.1.windows.1
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