1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/** @file
Copyright (c) 2024, ARM Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- GUID Partition Table (GPT) Disk Layout
(https://uefi.org/specs/UEFI/2.10/05_GUID_Partition_Table_Format.html)
**/
#ifndef DISK_GPT_H_
#define DISK_GPT_H_
#include <Uefi/UefiGpt.h>
#define GPT_PROTECTIVE_MBR_SIZE 512
#define GPT_PARTITION_LBA_SIZE 512
/**
Compare function to find out specific Gpt Partition.
@param [in] PartitionEntry GPT partition.
@param [in] Data User Data used to compare GPT partition.
@retval TRUE Found
@retval FALSE No found
**/
typedef BOOLEAN (EFIAPI *MATCH_FUNC_T)(
CONST EFI_PARTITION_ENTRY *PartitionEntry,
CONST VOID *Data
);
#pragma pack(1)
/** GPT partition table.
*/
typedef struct {
/// GPT header.
EFI_PARTITION_TABLE_HEADER Header;
/// Gpt Partition Entry.
EFI_PARTITION_ENTRY PartitionTable[];
} GPT_PARTITION_TABLE;
/**
* GPT partition handle.
*/
typedef struct {
/// Block device instance.
EFI_BLOCK_IO_PROTOCOL *Instance;
/// Gpt Partition Table.
GPT_PARTITION_TABLE *GptTable;
} GPT_PARTITION_HANDLE;
#pragma pack()
/**
Read "ReadSize" bytes from a partition at "ReadOffset" bytes from its start.
@param[in] GptHandle GptHandle.
@param[out] DestBuffer Pointer to the buffer that will store the data read.
@param[in] ReadSize The number of bytes to read.
@param[in] ReadOffset The offset to read from within the partition.
@param[in] BaseLba The start Lba of the partition.
@retval EFI_SUCCESS ReadSize bytes read successfully.
@retval Error No bytes read.
**/
EFI_STATUS
EFIAPI
GptReadPartition (
IN GPT_PARTITION_HANDLE *GptHandle,
OUT VOID *DestBuffer,
IN UINTN ReadSize,
IN UINTN ReadOffset,
IN UINTN BaseLba
);
/**
Write "BufferSize" bytes to a partition at "WriteOffset" bytes from its start.
@param[in] GptHandle GptHandle.
@param[in] SrcBuffer Pointer to the buffer with the data to be written.
@param[in] BufferSize The number of bytes to write.
@param[in] WriteOffset The offset to write to within the partition.
@param[in] BaseLba The start Lba of the partition.
@retval EFI_SUCCESS BufferSize bytes written successfully.
@retval Error No bytes written.
**/
EFI_STATUS
GptWritePartition (
IN GPT_PARTITION_HANDLE *GptHandle,
IN VOID *SrcBuffer,
IN UINTN BufferSize,
IN UINTN WriteOffset,
IN UINTN BaseLba
);
/**
Retrieve first matched GPT partition entry information.
@param[in] GptHandle GptHandle.
@param[in] Match Matching function to find out specific GPT partition.
@param[in] Data Data used in @Match to find out specific GPT partition.
@param[out] StartLBA The StartLBA of matched partition.
@param[out] PartSize Size of matched partition in bytes.
@retval EFI_SUCCESS The GPT partition array was correctly retrieved.
@retval Error No information was correctly retrieved.
**/
EFI_STATUS
EFIAPI
GptGetMatchedPartitionStats (
IN GPT_PARTITION_HANDLE *GptHandle,
IN MATCH_FUNC_T Match,
IN VOID *Data,
OUT EFI_LBA *StartLBA,
OUT UINTN *PartSize
);
/**
Release GptHandle.
@param[in] GptHandle Gpt Handle.
**/
VOID
EFIAPI
GptReleasePartition (
IN GPT_PARTITION_HANDLE *GptHandle
);
/**
Open GptHandle.
@param[in] Instance The block IO protocol instance containing a GPT.
@param[out] GptHandle Gpt Handle.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER Invalid Parameter.
@retval EFI_ABORT Fail to read Gpt Table Header or
Invalid Gpt Table.
@retval EFI_OUT_OF_RESOURCES Out of memory.
**/
EFI_STATUS
EFIAPI
GptOpenPartition (
IN EFI_BLOCK_IO_PROTOCOL *Instance,
OUT GPT_PARTITION_HANDLE **GptHandle
);
#endif /* _DISK_GPT_H_ */
|
