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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 |