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5f597758 | 1 | /** @file\r |
e9b67286 | 2 | The variable data structures are related to EDK II-specific implementation of UEFI variables.\r |
3 | VariableFormat.h defines variable data headers and variable storage region headers.\r | |
3cfb790c | 4 | \r |
378ea6e4 | 5 | Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r |
b6477d82 SZ |
6 | This program and the accompanying materials are licensed and made available under\r |
7 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
64a80549 | 8 | The full text of the license may be found at\r |
b6477d82 | 9 | http://opensource.org/licenses/bsd-license.php.\r |
ebafc55b | 10 | \r |
b6477d82 | 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
64a80549 | 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
3cfb790c | 13 | \r |
14 | **/\r | |
15 | \r | |
16 | #ifndef __VARIABLE_FORMAT_H__\r | |
17 | #define __VARIABLE_FORMAT_H__\r | |
18 | \r | |
3709c4cd | 19 | #define EFI_VARIABLE_GUID \\r |
20 | { 0xddcf3616, 0x3275, 0x4164, { 0x98, 0xb6, 0xfe, 0x85, 0x70, 0x7f, 0xfe, 0x7d } }\r | |
21 | \r | |
1fe6c125 SZ |
22 | #define EFI_AUTHENTICATED_VARIABLE_GUID \\r |
23 | { 0xaaf32c78, 0x947b, 0x439a, { 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92 } }\r | |
24 | \r | |
3709c4cd | 25 | extern EFI_GUID gEfiVariableGuid;\r |
1fe6c125 | 26 | extern EFI_GUID gEfiAuthenticatedVariableGuid;\r |
3709c4cd | 27 | \r |
ebafc55b | 28 | ///\r |
e9b67286 | 29 | /// Alignment of variable name and data, according to the architecture:\r |
64a80549 | 30 | /// * For IA-32 and Intel(R) 64 architectures: 1.\r |
31 | /// * For IA-64 architecture: 8.\r | |
ebafc55b | 32 | ///\r |
3cfb790c | 33 | #if defined (MDE_CPU_IPF)\r |
9cad030b | 34 | #define ALIGNMENT 8\r |
3cfb790c | 35 | #else\r |
9cad030b | 36 | #define ALIGNMENT 1\r |
3cfb790c | 37 | #endif\r |
38 | \r | |
e5618791 | 39 | //\r |
e9b67286 | 40 | // GET_PAD_SIZE calculates the miminal pad bytes needed to make the current pad size satisfy the alignment requirement.\r |
e5618791 | 41 | //\r |
d4cb8e71 | 42 | #if (ALIGNMENT == 1)\r |
e5618791 LG |
43 | #define GET_PAD_SIZE(a) (0)\r |
44 | #else\r | |
45 | #define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))\r | |
46 | #endif\r | |
47 | \r | |
48 | ///\r | |
64a80549 | 49 | /// Alignment of Variable Data Header in Variable Store region.\r |
e5618791 | 50 | ///\r |
9cad030b | 51 | #define HEADER_ALIGNMENT 4\r |
e5618791 | 52 | #define HEADER_ALIGN(Header) (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))\r |
9cad030b | 53 | \r |
ebafc55b | 54 | ///\r |
64a80549 | 55 | /// Status of Variable Store Region.\r |
ebafc55b | 56 | ///\r |
3cfb790c | 57 | typedef enum {\r |
58 | EfiRaw,\r | |
59 | EfiValid,\r | |
60 | EfiInvalid,\r | |
61 | EfiUnknown\r | |
62 | } VARIABLE_STORE_STATUS;\r | |
63 | \r | |
3cfb790c | 64 | #pragma pack(1)\r |
65 | \r | |
3709c4cd | 66 | #define VARIABLE_STORE_SIGNATURE EFI_VARIABLE_GUID\r |
1fe6c125 | 67 | #define AUTHENTICATED_VARIABLE_STORE_SIGNATURE EFI_AUTHENTICATED_VARIABLE_GUID\r |
ebafc55b LG |
68 | \r |
69 | ///\r | |
64a80549 | 70 | /// Variable Store Header Format and State.\r |
ebafc55b LG |
71 | ///\r |
72 | #define VARIABLE_STORE_FORMATTED 0x5a\r | |
73 | #define VARIABLE_STORE_HEALTHY 0xfe\r | |
74 | \r | |
75 | ///\r | |
64a80549 | 76 | /// Variable Store region header.\r |
ebafc55b | 77 | ///\r |
3cfb790c | 78 | typedef struct {\r |
ebafc55b LG |
79 | ///\r |
80 | /// Variable store region signature.\r | |
81 | ///\r | |
3709c4cd | 82 | EFI_GUID Signature;\r |
ebafc55b | 83 | ///\r |
b6477d82 | 84 | /// Size of entire variable store,\r |
3709c4cd | 85 | /// including size of variable store header but not including the size of FvHeader.\r |
ebafc55b | 86 | ///\r |
3cfb790c | 87 | UINT32 Size;\r |
ebafc55b | 88 | ///\r |
64a80549 | 89 | /// Variable region format state.\r |
ebafc55b | 90 | ///\r |
3cfb790c | 91 | UINT8 Format;\r |
ebafc55b | 92 | ///\r |
64a80549 | 93 | /// Variable region healthy state.\r |
ebafc55b | 94 | ///\r |
3cfb790c | 95 | UINT8 State;\r |
96 | UINT16 Reserved;\r | |
97 | UINT32 Reserved1;\r | |
98 | } VARIABLE_STORE_HEADER;\r | |
99 | \r | |
ebafc55b | 100 | ///\r |
64a80549 | 101 | /// Variable data start flag.\r |
ebafc55b LG |
102 | ///\r |
103 | #define VARIABLE_DATA 0x55AA\r | |
104 | \r | |
105 | ///\r | |
64a80549 | 106 | /// Variable State flags.\r |
ebafc55b | 107 | ///\r |
64a80549 | 108 | #define VAR_IN_DELETED_TRANSITION 0xfe ///< Variable is in obsolete transition.\r |
109 | #define VAR_DELETED 0xfd ///< Variable is obsolete.\r | |
110 | #define VAR_HEADER_VALID_ONLY 0x7f ///< Variable header has been valid.\r | |
111 | #define VAR_ADDED 0x3f ///< Variable has been completely added.\r | |
ebafc55b | 112 | \r |
b6477d82 SZ |
113 | ///\r |
114 | /// Variable Attribute combinations.\r | |
115 | ///\r | |
116 | #define VARIABLE_ATTRIBUTE_NV_BS (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS)\r | |
117 | #define VARIABLE_ATTRIBUTE_BS_RT (EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)\r | |
118 | #define VARIABLE_ATTRIBUTE_AT_AW (EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r | |
378ea6e4 | 119 | #define VARIABLE_ATTRIBUTE_BS_RT_AT (VARIABLE_ATTRIBUTE_BS_RT | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)\r |
b6477d82 SZ |
120 | #define VARIABLE_ATTRIBUTE_NV_BS_RT (VARIABLE_ATTRIBUTE_BS_RT | EFI_VARIABLE_NON_VOLATILE)\r |
121 | #define VARIABLE_ATTRIBUTE_NV_BS_RT_HR (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_HARDWARE_ERROR_RECORD)\r | |
122 | #define VARIABLE_ATTRIBUTE_NV_BS_RT_AT (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)\r | |
123 | #define VARIABLE_ATTRIBUTE_NV_BS_RT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r | |
124 | #define VARIABLE_ATTRIBUTE_NV_BS_RT_HR_AT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT_HR | VARIABLE_ATTRIBUTE_AT_AW)\r | |
125 | \r | |
ebafc55b | 126 | ///\r |
64a80549 | 127 | /// Single Variable Data Header Structure.\r |
ebafc55b | 128 | ///\r |
3cfb790c | 129 | typedef struct {\r |
ebafc55b | 130 | ///\r |
64a80549 | 131 | /// Variable Data Start Flag.\r |
ebafc55b | 132 | ///\r |
3cfb790c | 133 | UINT16 StartId;\r |
ebafc55b | 134 | ///\r |
64a80549 | 135 | /// Variable State defined above.\r |
ebafc55b | 136 | ///\r |
3cfb790c | 137 | UINT8 State;\r |
138 | UINT8 Reserved;\r | |
ebafc55b | 139 | ///\r |
64a80549 | 140 | /// Attributes of variable defined in UEFI specification.\r |
ebafc55b | 141 | ///\r |
3cfb790c | 142 | UINT32 Attributes;\r |
ebafc55b | 143 | ///\r |
64a80549 | 144 | /// Size of variable null-terminated Unicode string name.\r |
ebafc55b | 145 | ///\r |
3cfb790c | 146 | UINT32 NameSize;\r |
ebafc55b | 147 | ///\r |
64a80549 | 148 | /// Size of the variable data without this header.\r |
ebafc55b | 149 | ///\r |
3cfb790c | 150 | UINT32 DataSize;\r |
ebafc55b | 151 | ///\r |
e9b67286 | 152 | /// A unique identifier for the vendor that produces and consumes this varaible.\r |
ebafc55b | 153 | ///\r |
3cfb790c | 154 | EFI_GUID VendorGuid;\r |
155 | } VARIABLE_HEADER;\r | |
156 | \r | |
1fe6c125 SZ |
157 | ///\r |
158 | /// Single Authenticated Variable Data Header Structure.\r | |
159 | ///\r | |
160 | typedef struct {\r | |
161 | ///\r | |
162 | /// Variable Data Start Flag.\r | |
163 | ///\r | |
164 | UINT16 StartId;\r | |
165 | ///\r | |
166 | /// Variable State defined above.\r | |
167 | ///\r | |
168 | UINT8 State;\r | |
169 | UINT8 Reserved;\r | |
170 | ///\r | |
171 | /// Attributes of variable defined in UEFI specification.\r | |
172 | ///\r | |
173 | UINT32 Attributes;\r | |
174 | ///\r | |
175 | /// Associated monotonic count value against replay attack.\r | |
176 | ///\r | |
177 | UINT64 MonotonicCount;\r | |
178 | ///\r | |
179 | /// Associated TimeStamp value against replay attack.\r | |
180 | ///\r | |
181 | EFI_TIME TimeStamp;\r | |
182 | ///\r | |
183 | /// Index of associated public key in database.\r | |
184 | ///\r | |
185 | UINT32 PubKeyIndex;\r | |
186 | ///\r | |
187 | /// Size of variable null-terminated Unicode string name.\r | |
188 | ///\r | |
189 | UINT32 NameSize;\r | |
190 | ///\r | |
191 | /// Size of the variable data without this header.\r | |
192 | ///\r | |
193 | UINT32 DataSize;\r | |
194 | ///\r | |
195 | /// A unique identifier for the vendor that produces and consumes this varaible.\r | |
196 | ///\r | |
197 | EFI_GUID VendorGuid;\r | |
198 | } AUTHENTICATED_VARIABLE_HEADER;\r | |
199 | \r | |
b6477d82 SZ |
200 | typedef struct {\r |
201 | EFI_GUID *Guid;\r | |
202 | CHAR16 *Name;\r | |
203 | UINTN VariableSize;\r | |
204 | } VARIABLE_ENTRY_CONSISTENCY;\r | |
205 | \r | |
3cfb790c | 206 | #pragma pack()\r |
207 | \r | |
3709c4cd | 208 | typedef struct _VARIABLE_INFO_ENTRY VARIABLE_INFO_ENTRY;\r |
209 | \r | |
210 | ///\r | |
211 | /// This structure contains the variable list that is put in EFI system table.\r | |
e9b67286 | 212 | /// The variable driver collects all variables that were used at boot service time and produces this list.\r |
b6477d82 | 213 | /// This is an optional feature to dump all used variables in shell environment.\r |
3709c4cd | 214 | ///\r |
215 | struct _VARIABLE_INFO_ENTRY {\r | |
64a80549 | 216 | VARIABLE_INFO_ENTRY *Next; ///< Pointer to next entry.\r |
217 | EFI_GUID VendorGuid; ///< Guid of Variable.\r | |
b6477d82 | 218 | CHAR16 *Name; ///< Name of Variable.\r |
64a80549 | 219 | UINT32 Attributes; ///< Attributes of variable defined in UEFI specification.\r |
220 | UINT32 ReadCount; ///< Number of times to read this variable.\r | |
221 | UINT32 WriteCount; ///< Number of times to write this variable.\r | |
222 | UINT32 DeleteCount; ///< Number of times to delete this variable.\r | |
223 | UINT32 CacheCount; ///< Number of times that cache hits this variable.\r | |
224 | BOOLEAN Volatile; ///< TRUE if volatile, FALSE if non-volatile.\r | |
3709c4cd | 225 | };\r |
226 | \r | |
3cfb790c | 227 | #endif // _EFI_VARIABLE_H_\r |