diff options
| -rw-r--r-- | UefiCpuPkg/Include/Guid/MpInformation2.h | 56 | ||||
| -rw-r--r-- | UefiCpuPkg/UefiCpuPkg.dec | 3 |
2 files changed, 59 insertions, 0 deletions
diff --git a/UefiCpuPkg/Include/Guid/MpInformation2.h b/UefiCpuPkg/Include/Guid/MpInformation2.h new file mode 100644 index 0000000000..7a25fcc2f3 --- /dev/null +++ b/UefiCpuPkg/Include/Guid/MpInformation2.h @@ -0,0 +1,56 @@ +/** @file
+ EFI MP information protocol provides a lightweight MP_SERVICES_PROTOCOL.
+
+ MP information protocol only provides static information of MP processor.
+
+ If SwitchBSP or Enable/DisableAP in MP service is called between the HOB
+ production and HOB consumption, EFI_PROCESSOR_INFORMATION.StatusFlag field
+ in this HOB may be invalidated.
+
+ Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef MP_INFORMATION2_H_
+#define MP_INFORMATION2_H_
+
+#include <Protocol/MpService.h>
+#include <PiPei.h>
+#include <Ppi/SecPlatformInformation.h>
+
+#define MP_INFORMATION2_HOB_REVISION 1
+
+#define MP_INFORMATION2_GUID \
+ { \
+ 0x417a7f64, 0xf4e9, 0x4b32, {0x84, 0x6a, 0x5c, 0xc4, 0xd8, 0x62, 0x18, 0x79} \
+ }
+
+typedef struct {
+ EFI_PROCESSOR_INFORMATION ProcessorInfo;
+ //
+ // Add more fields in future
+ //
+} MP_INFORMATION2_ENTRY;
+
+typedef struct {
+ UINT16 NumberOfProcessors;
+ UINT16 EntrySize;
+ UINT8 Version;
+ UINT8 Reserved[3];
+ UINT64 ProcessorIndex;
+ MP_INFORMATION2_ENTRY Entry[0];
+} MP_INFORMATION2_HOB_DATA;
+
+//
+// Producer of MP_INFORMATION2_HOB_DATA should assign sizeof (MP_INFORMATION2_ENTRY) to MP_INFORMATION2_HOB_DATA.EntrySize
+// Consumer of MP_INFORMATION2_HOB_DATA should use below macro or similar logic to get the individual entry
+// as the entry structure might be updated to include more information.
+//
+#define GET_MP_INFORMATION_ENTRY(MpInfoHobData, Index) \
+ (MP_INFORMATION2_ENTRY *)((UINTN)&((MP_INFORMATION2_HOB_DATA *)(MpInfoHobData))->Entry + (MpInfoHobData)->EntrySize * Index)
+
+extern EFI_GUID gMpInformationHobGuid2;
+
+#endif
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index 0b5431dbf7..61bd34ef17 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/MpInformation2.h
+ gMpInformationHobGuid2 = { 0x417a7f64, 0xf4e9, 0x4b32, {0x84, 0x6a, 0x5c, 0xc4, 0xd8, 0x62, 0x18, 0x79 }}
+
[Protocols]
## Include/Protocol/SmmCpuService.h
gEfiSmmCpuServiceProtocolGuid = { 0x1d202cab, 0xc8ab, 0x4d5c, { 0x94, 0xf7, 0x3c, 0xfc, 0xc0, 0xd3, 0xd3, 0x35 }}
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