UefiCpuPkg/CpuMpPei/Microcode.h

   1 /** @file
   2   Definitions for loading microcode on processors.
   3
   4   Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef _CPU_MICROCODE_H_
  16 #define _CPU_MICROCODE_H_
  17
  18 #define EFI_MSR_IA32_PLATFORM_ID         0x17
  19 #define EFI_MSR_IA32_BIOS_UPDT_TRIG      0x79
  20 #define EFI_MSR_IA32_BIOS_SIGN_ID        0x8b
  21
  22 #define MAX_MICROCODE_DESCRIPTOR_LENGTH  100
  23
  24 typedef struct {
  25   VOID     *MicrocodeData;
  26   UINTN    MicrocodeSize;
  27   UINT32   ProcessorId;
  28 } MICROCODE_INFO;
  29
  30 //
  31 // Definition for IA32 microcode format
  32 //
  33 typedef struct {
  34   UINT32  HeaderVersion;
  35   UINT32  UpdateRevision;
  36   UINT32  Date;
  37   UINT32  ProcessorId;
  38   UINT32  Checksum;
  39   UINT32  LoaderRevision;
  40   UINT32  ProcessorFlags;
  41   UINT32  DataSize;
  42   UINT32  TotalSize;
  43   UINT8   Reserved[12];
  44 } EFI_CPU_MICROCODE_HEADER;
  45
  46 typedef struct {
  47   UINT32  ExtendedSignatureCount;
  48   UINT32  ExtendedTableChecksum;
  49   UINT8   Reserved[12];
  50 } EFI_CPU_MICROCODE_EXTENDED_TABLE_HEADER;
  51
  52 typedef struct {
  53   UINT32  ProcessorSignature;
  54   UINT32  ProcessorFlag;
  55   UINT32  ProcessorChecksum;
  56 } EFI_CPU_MICROCODE_EXTENDED_TABLE;
  57
  58 #endif