diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h')
| -rw-r--r-- | roms/edk2/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/roms/edk2/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h b/roms/edk2/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h new file mode 100644 index 000000000..2d307fbff --- /dev/null +++ b/roms/edk2/UefiCpuPkg/Include/Guid/MicrocodePatchHob.h @@ -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
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