1 #ifndef _EFI_GPT_H
2 #define _EFI_GPT_H
3 /*++
4 
5 Copyright (c) 1998  Intel Corporation
6 
7 Module Name:
8 
9     EfiGpt.h
10 
11 Abstract:
12     Include file for EFI partitioning scheme
13 
14 
15 
16 Revision History
17 
18 --*/
19 
20 #define PRIMARY_PART_HEADER_LBA         1
21 
22 typedef struct {
23     EFI_TABLE_HEADER    Header;
24     EFI_LBA             MyLBA;
25     EFI_LBA             AlternateLBA;
26     EFI_LBA             FirstUsableLBA;
27     EFI_LBA             LastUsableLBA;
28     EFI_GUID            DiskGUID;
29     EFI_LBA             PartitionEntryLBA;
30     UINT32              NumberOfPartitionEntries;
31     UINT32              SizeOfPartitionEntry;
32     UINT32              PartitionEntryArrayCRC32;
33 } EFI_PARTITION_TABLE_HEADER;
34 
35 #define EFI_PTAB_HEADER_ID  "EFI PART"
36 
37 typedef struct {
38     EFI_GUID    PartitionTypeGUID;
39     EFI_GUID    UniquePartitionGUID;
40     EFI_LBA     StartingLBA;
41     EFI_LBA     EndingLBA;
42     UINT64      Attributes;
43     CHAR16      PartitionName[36];
44 } EFI_PARTITION_ENTRY;
45 
46 //
47 // EFI Partition Attributes
48 //
49 #define EFI_PART_USED_BY_EFI            0x0000000000000001
50 #define EFI_PART_REQUIRED_TO_FUNCTION   0x0000000000000002
51 #define EFI_PART_USED_BY_OS             0x0000000000000004
52 #define EFI_PART_REQUIRED_BY_OS         0x0000000000000008
53 #define EFI_PART_BACKUP_REQUIRED        0x0000000000000010
54 #define EFI_PART_USER_DATA              0x0000000000000020
55 #define EFI_PART_CRITICAL_USER_DATA     0x0000000000000040
56 #define EFI_PART_REDUNDANT_PARTITION    0x0000000000000080
57 
58 #define EFI_PART_TYPE_UNUSED_GUID   \
59     { 0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} }
60 
61 #define EFI_PART_TYPE_EFI_SYSTEM_PART_GUID  \
62     { 0xc12a7328, 0xf81f, 0x11d2, {0xba, 0x4b, 0x00, 0xa0, 0xc9, 0x3e, 0xc9, 0x3b} }
63 
64 #define EFI_PART_TYPE_LEGACY_MBR_GUID   \
65     { 0x024dee41, 0x33e7, 0x11d3, {0x9d, 0x69, 0x00, 0x08, 0xc7, 0x81, 0xf3, 0x9f} }
66 
67 #endif
68 
69