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 BOOLEAN Load; 29 } MICROCODE_INFO; 30 31 // 32 // Definition for IA32 microcode format 33 // 34 typedef struct { 35 UINT32 HeaderVersion; 36 UINT32 UpdateRevision; 37 UINT32 Date; 38 UINT32 ProcessorId; 39 UINT32 Checksum; 40 UINT32 LoaderRevision; 41 UINT32 ProcessorFlags; 42 UINT32 DataSize; 43 UINT32 TotalSize; 44 UINT8 Reserved[12]; 45 } EFI_CPU_MICROCODE_HEADER; 46 47 typedef struct { 48 UINT32 ExtendedSignatureCount; 49 UINT32 ExtendedTableChecksum; 50 UINT8 Reserved[12]; 51 } EFI_CPU_MICROCODE_EXTENDED_TABLE_HEADER; 52 53 typedef struct { 54 UINT32 ProcessorSignature; 55 UINT32 ProcessorFlag; 56 UINT32 ProcessorChecksum; 57 } EFI_CPU_MICROCODE_EXTENDED_TABLE; 58 59 /** 60 Detect whether specified processor can find matching microcode patch and load it. 61 62 **/ 63 VOID 64 MicrocodeDetect ( 65 VOID 66 ); 67 68 #endif 69