From d1cf93333f3a9394c2f746db4deb374b6ba374fd Mon Sep 17 00:00:00 2001
From: Jeff Fan <jeff.fan@intel.com>
Date: Wed, 15 Jul 2015 03:40:41 +0000
Subject: UefiCpuPkg/CpuMpPei: Load microcode on BSP and APs

Add DetectMicrocode() to load microcode on BSP and APs.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18002 6f19259b-4bc3-4df7-8a09-765794883524
---
 UefiCpuPkg/CpuMpPei/Microcode.h | 68 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 UefiCpuPkg/CpuMpPei/Microcode.h

(limited to 'UefiCpuPkg/CpuMpPei/Microcode.h')

diff --git a/UefiCpuPkg/CpuMpPei/Microcode.h b/UefiCpuPkg/CpuMpPei/Microcode.h
new file mode 100644
index 0000000000..6f93e2f044
--- /dev/null
+++ b/UefiCpuPkg/CpuMpPei/Microcode.h
@@ -0,0 +1,68 @@
+/** @file
+  Definitions for loading microcode on processors.
+
+  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _CPU_MICROCODE_H_
+#define _CPU_MICROCODE_H_
+
+#define EFI_MSR_IA32_PLATFORM_ID         0x17
+#define EFI_MSR_IA32_BIOS_UPDT_TRIG      0x79
+#define EFI_MSR_IA32_BIOS_SIGN_ID        0x8b
+
+#define MAX_MICROCODE_DESCRIPTOR_LENGTH  100
+
+typedef struct {
+  VOID     *MicrocodeData;
+  UINTN    MicrocodeSize;
+  UINT32   ProcessorId;
+  BOOLEAN  Load;
+} MICROCODE_INFO;
+
+//
+// Definition for IA32 microcode format
+//
+typedef struct {
+  UINT32  HeaderVersion;
+  UINT32  UpdateRevision;
+  UINT32  Date;
+  UINT32  ProcessorId;
+  UINT32  Checksum;
+  UINT32  LoaderRevision;
+  UINT32  ProcessorFlags;
+  UINT32  DataSize;
+  UINT32  TotalSize;
+  UINT8   Reserved[12];
+} EFI_CPU_MICROCODE_HEADER;
+
+typedef struct {
+  UINT32  ExtendedSignatureCount;
+  UINT32  ExtendedTableChecksum;
+  UINT8   Reserved[12];
+} EFI_CPU_MICROCODE_EXTENDED_TABLE_HEADER;
+
+typedef struct {
+  UINT32  ProcessorSignature;
+  UINT32  ProcessorFlag;
+  UINT32  ProcessorChecksum;
+} EFI_CPU_MICROCODE_EXTENDED_TABLE;
+
+/**
+  Detect whether specified processor can find matching microcode patch and load it.
+
+**/
+VOID
+MicrocodeDetect (
+  VOID
+  );
+
+#endif
-- 
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