blob: 2322df196b09770be6eabacb5a472df4c0193f07
1 | /* |
2 | * Copyright (C) 2008 RuggedCom, Inc. |
3 | * Richard Retanubun <RichardRetanubun@RuggedCom.com> |
4 | * |
5 | * SPDX-License-Identifier: GPL-2.0+ |
6 | */ |
7 | |
8 | /* |
9 | * See also linux/fs/partitions/efi.h |
10 | * |
11 | * EFI GUID Partition Table |
12 | * Per Intel EFI Specification v1.02 |
13 | * http://developer.intel.com/technology/efi/efi.htm |
14 | */ |
15 | |
16 | #include <linux/compiler.h> |
17 | |
18 | #ifndef _DISK_PART_EFI_H |
19 | #define _DISK_PART_EFI_H |
20 | |
21 | #define MSDOS_MBR_SIGNATURE 0xAA55 |
22 | #define EFI_PMBR_OSTYPE_EFI 0xEF |
23 | #define EFI_PMBR_OSTYPE_EFI_GPT 0xEE |
24 | |
25 | #define GPT_HEADER_SIGNATURE 0x5452415020494645ULL |
26 | #define GPT_HEADER_REVISION_V1 0x00010000 |
27 | #define GPT_PRIMARY_PARTITION_TABLE_LBA 1ULL |
28 | #define GPT_ENTRY_NAME "gpt" |
29 | #define GPT_ENTRY_NUMBERS 128 |
30 | #define GPT_ENTRY_SIZE 128 |
31 | |
32 | #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ |
33 | ((efi_guid_t) \ |
34 | {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ |
35 | (b) & 0xff, ((b) >> 8) & 0xff, \ |
36 | (c) & 0xff, ((c) >> 8) & 0xff, \ |
37 | (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) |
38 | |
39 | #define PARTITION_SYSTEM_GUID \ |
40 | EFI_GUID( 0xC12A7328, 0xF81F, 0x11d2, \ |
41 | 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) |
42 | #define LEGACY_MBR_PARTITION_GUID \ |
43 | EFI_GUID( 0x024DEE41, 0x33E7, 0x11d3, \ |
44 | 0x9D, 0x69, 0x00, 0x08, 0xC7, 0x81, 0xF3, 0x9F) |
45 | #define PARTITION_MSFT_RESERVED_GUID \ |
46 | EFI_GUID( 0xE3C9E316, 0x0B5C, 0x4DB8, \ |
47 | 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE) |
48 | #define PARTITION_BASIC_DATA_GUID \ |
49 | EFI_GUID( 0xEBD0A0A2, 0xB9E5, 0x4433, \ |
50 | 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) |
51 | #define PARTITION_LINUX_FILE_SYSTEM_DATA_GUID \ |
52 | EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \ |
53 | 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4) |
54 | #define PARTITION_LINUX_RAID_GUID \ |
55 | EFI_GUID( 0xa19d880f, 0x05fc, 0x4d3b, \ |
56 | 0xa0, 0x06, 0x74, 0x3f, 0x0f, 0x84, 0x91, 0x1e) |
57 | #define PARTITION_LINUX_SWAP_GUID \ |
58 | EFI_GUID( 0x0657fd6d, 0xa4ab, 0x43c4, \ |
59 | 0x84, 0xe5, 0x09, 0x33, 0xc8, 0x4b, 0x4f, 0x4f) |
60 | #define PARTITION_LINUX_LVM_GUID \ |
61 | EFI_GUID( 0xe6d6d379, 0xf507, 0x44c2, \ |
62 | 0xa2, 0x3c, 0x23, 0x8f, 0x2a, 0x3d, 0xf9, 0x28) |
63 | #define PARTITION_LINUX_DEFAULT_GUID \ |
64 | EFI_GUID(0x0FC63DAF, 0x8483, 0x4772, \ |
65 | 0x8E, 0x79, 0x3D, 0x69, 0xD8, 0x47, 0x7D, 0xE4) |
66 | #define PARTITION_ANDROID_BOOTLOADER_GUID \ |
67 | EFI_GUID(0x2568845D, 0x2332, 0x4675, \ |
68 | 0xBC, 0x39, 0x8F, 0xA5, 0xA4, 0x74, 0x8D, 0x15) |
69 | #define PARTITION_ANDROID_BOOTLOADER2_GUID \ |
70 | EFI_GUID(0x114EAFFE, 0x1552, 0x4022, \ |
71 | 0xB2, 0x6E, 0x9B, 0x05, 0x36, 0x04, 0xCF, 0x84) |
72 | #define PARTITION_ANDROID_RECOVERY_GUID \ |
73 | EFI_GUID(0x4177C722, 0x9E92, 0x4AAB, \ |
74 | 0x86, 0x44, 0x43, 0x50, 0x2B, 0xFD, 0x55, 0x06) |
75 | #define PARTITION_ANDROID_MISC_GUID \ |
76 | EFI_GUID(0xEF32A33B, 0xA409, 0x486C, \ |
77 | 0x91, 0X41, 0x9F, 0xFB, 0x71, 0x1F, 0x62, 0x66) |
78 | #define PARTITION_ANDROID_METADATA_GUID\ |
79 | EFI_GUID(0x20AC26BE, 0x20B7, 0x11E3, \ |
80 | 0x84, 0xC5, 0x6C, 0xFD, 0xB9, 0x47, 0x11, 0xE9) |
81 | #define PARTITION_ANDROID_SYSTEM_GUID \ |
82 | EFI_GUID(0x38F428E6, 0xD326, 0x425D, \ |
83 | 0x91, 0x40, 0x6E, 0x0E, 0xA1, 0x33, 0x64, 0x7C) |
84 | #define PARTITION_ANDROID_CACHE_GUID \ |
85 | EFI_GUID(0xA893EF21, 0xE428, 0x470A, \ |
86 | 0x9E, 0x55, 0x06, 0x68, 0xFD, 0x91, 0xA2, 0xD9) |
87 | #define PARTITION_ANDROID_DATA_GUID \ |
88 | EFI_GUID(0xDC76DDA9, 0x5AC1, 0x491C, \ |
89 | 0xAF, 0x42, 0xA8, 0x25, 0x91, 0x58, 0x0C, 0x0D) |
90 | #define PARTITION_ANDROID_PERSISTENT_GUID \ |
91 | EFI_GUID(0xEBC597D0, 0x2053, 0x4B15, \ |
92 | 0x8B, 0x64, 0xE0, 0xAA, 0xC7, 0x5F, 0x4D, 0xB1) |
93 | #define PARTITION_ANDROID_VENDOR_GUID \ |
94 | EFI_GUID(0xC5A0AEEC, 0x13EA, 0x11E5, \ |
95 | 0xA1, 0xB1, 0x00, 0x1E, 0x67, 0xCA, 0x0C, 0x3C) |
96 | #define PARTITION_ANDROID_CONFIG_GUID \ |
97 | EFI_GUID(0xBD59408B, 0x4514, 0x490D, \ |
98 | 0xBF, 0x12, 0x98, 0x78, 0xD9, 0x63, 0xF3, 0x78) |
99 | #define PARTITION_ANDROID_FACTORY_GUID \ |
100 | EFI_GUID(0x8F68CC74, 0xC5E5, 0x48DA, \ |
101 | 0xBE, 0x01, 0xA0, 0xC8, 0xC1, 0x5E, 0x9C, 0x80) |
102 | #define PARTITION_ANDROID_FACTORY_ALT_GUID \ |
103 | EFI_GUID(0x9FDAA6EF, 0x4B3F, 0x40D2, \ |
104 | 0xBA, 0x8D, 0xBF, 0xF1, 0x6B, 0xFB, 0x88, 0x78) |
105 | #define PARTITION_ANDROID_FASTBOOT_GUID \ |
106 | EFI_GUID(0x767941D0, 0x2085, 0x11E3, \ |
107 | 0xAD, 0x3B, 0x6C, 0xFD, 0xB9, 0x47, 0x11, 0xE9) |
108 | #define PARTITION_ANDROID_TERTIARY_GUID \ |
109 | EFI_GUID(0x767941D0, 0x2085, 0x11E3, \ |
110 | 0xAD, 0x3B, 0x6C, 0xFD, 0xB9, 0x47, 0x11, 0xE9) |
111 | #define PARTITION_ANDROID_OEM_GUID \ |
112 | EFI_GUID(0xAC6D7924, 0xEB71, 0x4DF8, \ |
113 | 0xB4, 0x8D, 0xE2, 0x67, 0xB2, 0x71, 0x48, 0xFF) |
114 | |
115 | /* linux/include/efi.h */ |
116 | typedef u16 efi_char16_t; |
117 | |
118 | typedef struct { |
119 | u8 b[16]; |
120 | } efi_guid_t; |
121 | |
122 | /* based on linux/include/genhd.h */ |
123 | struct partition { |
124 | u8 boot_ind; /* 0x80 - active */ |
125 | u8 head; /* starting head */ |
126 | u8 sector; /* starting sector */ |
127 | u8 cyl; /* starting cylinder */ |
128 | u8 sys_ind; /* What partition type */ |
129 | u8 end_head; /* end head */ |
130 | u8 end_sector; /* end sector */ |
131 | u8 end_cyl; /* end cylinder */ |
132 | __le32 start_sect; /* starting sector counting from 0 */ |
133 | __le32 nr_sects; /* nr of sectors in partition */ |
134 | } __packed; |
135 | |
136 | /* based on linux/fs/partitions/efi.h */ |
137 | typedef struct _gpt_header { |
138 | __le64 signature; |
139 | __le32 revision; |
140 | __le32 header_size; |
141 | __le32 header_crc32; |
142 | __le32 reserved1; |
143 | __le64 my_lba; |
144 | __le64 alternate_lba; |
145 | __le64 first_usable_lba; |
146 | __le64 last_usable_lba; |
147 | efi_guid_t disk_guid; |
148 | __le64 partition_entry_lba; |
149 | __le32 num_partition_entries; |
150 | __le32 sizeof_partition_entry; |
151 | __le32 partition_entry_array_crc32; |
152 | } __packed gpt_header; |
153 | int gpt_restore(block_dev_desc_t *dev_desc, char *str_disk_guid, |
154 | disk_partition_t *partitions, const int parts_count); |
155 | |
156 | |
157 | typedef union _gpt_entry_attributes { |
158 | struct { |
159 | u64 required_to_function:1; |
160 | u64 no_block_io_protocol:1; |
161 | u64 legacy_bios_bootable:1; |
162 | u64 reserved:45; |
163 | u64 type_guid_specific:16; |
164 | } fields; |
165 | unsigned long long raw; |
166 | } __packed gpt_entry_attributes; |
167 | |
168 | #define PARTNAME_SZ (72 / sizeof(efi_char16_t)) |
169 | typedef struct _gpt_entry { |
170 | efi_guid_t partition_type_guid; |
171 | efi_guid_t unique_partition_guid; |
172 | __le64 starting_lba; |
173 | __le64 ending_lba; |
174 | gpt_entry_attributes attributes; |
175 | efi_char16_t partition_name[PARTNAME_SZ]; |
176 | } __packed gpt_entry; |
177 | |
178 | typedef struct _legacy_mbr { |
179 | u8 boot_code[440]; |
180 | __le32 unique_mbr_signature; |
181 | __le16 unknown; |
182 | struct partition partition_record[4]; |
183 | __le16 signature; |
184 | } __packed legacy_mbr; |
185 | |
186 | #endif /* _DISK_PART_EFI_H */ |
187 | |
188 | int pmbr_part_valid(struct partition *part); |
189 | int is_pmbr_valid(legacy_mbr * mbr); |
190 | int is_gpt_valid(block_dev_desc_t *dev_desc, u64 lba, |
191 | gpt_header *pgpt_head, gpt_entry **pgpt_pte); |
192 | gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc, |
193 | gpt_header * pgpt_head); |
194 | int is_pte_valid(gpt_entry * pte); |
195 | |
196 |