mirror of
https://github.com/LongSoft/UEFITool.git
synced 2024-11-25 17:38:22 +08:00
110 lines
4.6 KiB
C
Executable File
110 lines
4.6 KiB
C
Executable File
/* fit.h
|
|
|
|
Copyright (c) 2015, Nikolaj Schlej. All rights reserved.
|
|
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,
|
|
WITHWARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
*/
|
|
|
|
#ifndef FIT_H
|
|
#define FIT_H
|
|
|
|
#include "basetypes.h"
|
|
#include "ubytearray.h"
|
|
|
|
// Make sure we use right packing rules
|
|
#pragma pack(push, 1)
|
|
|
|
// Memory address of a pointer to FIT, 40h back from the end of flash chip
|
|
#define FIT_POINTER_OFFSET 0x40
|
|
|
|
// Entry types
|
|
#define FIT_TYPE_HEADER 0x00
|
|
#define FIT_TYPE_MICROCODE 0x01
|
|
#define FIT_TYPE_BIOS_AC_MODULE 0x02
|
|
#define FIT_TYPE_BIOS_INIT_MODULE 0x07
|
|
#define FIT_TYPE_TPM_POLICY 0x08
|
|
#define FIT_TYPE_BIOS_POLICY_DATA 0x09
|
|
#define FIT_TYPE_TXT_CONF_POLICY 0x0A
|
|
#define FIT_TYPE_AC_KEY_MANIFEST 0x0B
|
|
#define FIT_TYPE_AC_BOOT_POLICY 0x0C
|
|
#define FIT_TYPE_EMPTY 0x7F
|
|
|
|
#define FIT_HEADER_VERSION 0x0100
|
|
#define FIT_MICROCODE_VERSION 0x0100
|
|
|
|
const UByteArray FIT_SIGNATURE
|
|
("\x5F\x46\x49\x54\x5F\x20\x20\x20", 8);
|
|
|
|
typedef struct FIT_ENTRY_ {
|
|
UINT64 Address;
|
|
UINT32 Size : 24;
|
|
UINT32 : 8;
|
|
UINT16 Version;
|
|
UINT8 Type : 7;
|
|
UINT8 CsFlag : 1;
|
|
UINT8 Checksum;
|
|
} FIT_ENTRY;
|
|
|
|
typedef struct {
|
|
UINT16 IndexRegisterAddress;
|
|
UINT16 DataRegisterAddress;
|
|
UINT8 AccessWidth;
|
|
UINT8 BitPosition;
|
|
UINT16 Index;
|
|
} FIT_ENTRY_VERSION_0_CONFIG_POLICY;
|
|
|
|
// This scructure is described in Section 9.11.1 of the Intel Software Developer manual Volume 3A Part 1
|
|
typedef struct INTEL_MICROCODE_HEADER_ {
|
|
UINT32 HeaderVersion; // 0x00000001
|
|
UINT32 UpdateRevision;
|
|
UINT16 DateYear; // BCD
|
|
UINT8 DateDay; // BCD
|
|
UINT8 DateMonth; // BCD
|
|
UINT32 ProcessorSignature;
|
|
UINT32 Checksum; // Checksum of Update Data and Header. Used to verify the integrity of the update header and data.
|
|
// Checksum is correct when the summation of all the DWORDs (including the extended Processor Signature Table)
|
|
// that comprise the microcode update result in 00000000H.
|
|
UINT32 LoaderRevision; // 0x00000001
|
|
UINT8 ProcessorFlags;
|
|
UINT8 ProcessorFlagsReserved[3]; // Zeroes
|
|
UINT32 DataSize; // Specifies the size of the encrypted data in bytes, and must be a multiple of DWORDs.
|
|
// If this value is 00000000H, then the microcode update encrypted data is 2000 bytes (or 500 DWORDs).
|
|
// Sane values are less than 0x1000000
|
|
UINT32 TotalSize; // Specifies the total size of the microcode update in bytes.
|
|
// It is the summation of the header size, the encrypted data size and the size of the optional extended signature table.
|
|
// This value is always a multiple of 1024 according to the spec, but Intel already breached it several times.
|
|
// Sane values are less than 0x1000000
|
|
UINT8 Reserved[12]; // Zeroes
|
|
} INTEL_MICROCODE_HEADER;
|
|
|
|
#define INTEL_MICROCODE_REAL_DATA_SIZE_ON_ZERO 2000
|
|
|
|
typedef struct INTEL_MICROCODE_EXTENDED_HEADER_ {
|
|
UINT32 EntryCount;
|
|
UINT32 Checksum; // Checksum of extended processor signature table.
|
|
// Used to verify the integrity of the extended processor signature table.
|
|
// Checksum is correct when the summation of the DWORDs that comprise the extended processor signature table results in 00000000H.
|
|
|
|
UINT8 Reserved[12];
|
|
// INTEL_MICROCODE_EXTENDED_HEADER_ENTRY Entries[EntryCount];
|
|
} INTEL_MICROCODE_EXTENDED_HEADER;
|
|
|
|
typedef struct INTEL_MICROCODE_EXTENDED_HEADER_ENTRY_ {
|
|
UINT32 ProcessorSignature;
|
|
UINT32 ProcessorFlags;
|
|
UINT32 Checksum; // To calculate the Checksum, substitute the Primary Processor Signature entry and the Processor Flags entry with the corresponding Extended Patch entry.
|
|
// Delete the Extended Processor Signature Table entries.
|
|
// Checksum is correct when the summation of all DWORDs that comprise the created Extended Processor Patch results in 00000000H.
|
|
} INTEL_MICROCODE_EXTENDED_HEADER_ENTRY;
|
|
|
|
#define INTEL_MICROCODE_HEADER_VERSION_1 0x00000001
|
|
|
|
#pragma pack(pop)
|
|
|
|
#endif // FIT_H
|