efi64/include/efi/efigpt.h

#ifndef _EFI_GPT_H
#define _EFI_GPT_H
/*++

Copyright (c) 1998  Intel Corporation

Module Name:

    EfiGpt.h
    
Abstract:
    Include file for EFI partitioning scheme



Revision History

--*/

#define PRIMARY_PART_HEADER_LBA         1

typedef struct {
    EFI_TABLE_HEADER    Header;
    EFI_LBA             MyLBA;
    EFI_LBA             AlternateLBA;
    EFI_LBA             FirstUsableLBA;
    EFI_LBA             LastUsableLBA;
    EFI_GUID            DiskGUID;
    EFI_LBA             PartitionEntryLBA;
    UINT32              NumberOfPartitionEntries;
    UINT32              SizeOfPartitionEntry;
    UINT32              PartitionEntryArrayCRC32;
} EFI_PARTITION_TABLE_HEADER;

#define EFI_PTAB_HEADER_ID  "EFI PART"

typedef struct {
    EFI_GUID    PartitionTypeGUID;
    EFI_GUID    UniquePartitionGUID;
    EFI_LBA     StartingLBA;
    EFI_LBA     EndingLBA;
    UINT64      Attributes;
    CHAR16      PartitionName[36];
} EFI_PARTITION_ENTRY;

//
// EFI Partition Attributes
//
#define EFI_PART_USED_BY_EFI            0x0000000000000001
#define EFI_PART_REQUIRED_TO_FUNCTION   0x0000000000000002
#define EFI_PART_USED_BY_OS             0x0000000000000004
#define EFI_PART_REQUIRED_BY_OS         0x0000000000000008
#define EFI_PART_BACKUP_REQUIRED        0x0000000000000010
#define EFI_PART_USER_DATA              0x0000000000000020
#define EFI_PART_CRITICAL_USER_DATA     0x0000000000000040
#define EFI_PART_REDUNDANT_PARTITION    0x0000000000000080

#define EFI_PART_TYPE_UNUSED_GUID   \
    { 0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} }
    
#define EFI_PART_TYPE_EFI_SYSTEM_PART_GUID  \
    { 0xc12a7328, 0xf81f, 0x11d2, {0xba, 0x4b, 0x00, 0xa0, 0xc9, 0x3e, 0xc9, 0x3b} }

#define EFI_PART_TYPE_LEGACY_MBR_GUID   \
    { 0x024dee41, 0x33e7, 0x11d3, {0x9d, 0x69, 0x00, 0x08, 0xc7, 0x81, 0xf3, 0x9f} }

#endif