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75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
/* fit.h
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Copyright (c) 2015, Nikolaj Schlej. All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHWARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*/
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#ifndef FIT_H
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#define FIT_H
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#include "basetypes.h"
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#include "ubytearray.h"
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// Make sure we use right packing rules
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#pragma pack(push, 1)
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// Memory address of a pointer to FIT, 40h back from the end of flash chip
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#define FIT_POINTER_OFFSET 0x40
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// Entry types
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#define FIT_TYPE_HEADER 0x00
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#define FIT_TYPE_MICROCODE 0x01
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#define FIT_TYPE_BIOS_AC_MODULE 0x02
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#define FIT_TYPE_BIOS_INIT_MODULE 0x07
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#define FIT_TYPE_TPM_POLICY 0x08
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#define FIT_TYPE_BIOS_POLICY_DATA 0x09
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#define FIT_TYPE_TXT_CONF_POLICY 0x0A
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#define FIT_TYPE_AC_KEY_MANIFEST 0x0B
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#define FIT_TYPE_AC_BOOT_POLICY 0x0C
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#define FIT_TYPE_EMPTY 0x7F
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#define FIT_HEADER_VERSION 0x0100
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#define FIT_MICROCODE_VERSION 0x0100
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const UByteArray FIT_SIGNATURE
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("\x5F\x46\x49\x54\x5F\x20\x20\x20", 8);
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typedef struct FIT_ENTRY_ {
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UINT64 Address;
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UINT32 Size : 24;
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UINT32 : 8;
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UINT16 Version;
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UINT8 Type : 7;
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UINT8 CsFlag : 1;
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UINT8 Checksum;
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} FIT_ENTRY;
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typedef struct INTEL_MICROCODE_HEADER_ {
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UINT32 Version;
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UINT32 Revision;
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UINT16 DateYear;
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UINT8 DateDay;
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UINT8 DateMonth;
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UINT32 CpuSignature;
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UINT32 Checksum;
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UINT32 LoaderRevision;
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UINT32 CpuFlags;
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UINT32 DataSize;
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UINT32 TotalSize;
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UINT8 Reserved[12];
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} INTEL_MICROCODE_HEADER;
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#define INTEL_MICROCODE_HEADER_VERSION 0x00000001
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#define INTEL_MICROCODE_HEADER_RESERVED_BYTE 0x00
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#define INTEL_MICROCODE_HEADER_SIZES_VALID(ptr) (((INTEL_MICROCODE_HEADER*)ptr)->TotalSize - ((INTEL_MICROCODE_HEADER*)ptr)->DataSize == sizeof(INTEL_MICROCODE_HEADER))
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#pragma pack(pop)
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#endif // FIT_H
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