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1 | /** @file\r | |
2 | This file declares the Firmware Volume Protocol.\r | |
3 | \r | |
4 | The Firmware Volume Protocol provides file-level access to the firmware volume.\r | |
5 | Each firmware volume driver must produce an instance of the Firmware Volume\r | |
6 | Protocol if the firmware volume is to be visible to the system. The Firmware\r | |
7 | Volume Protocol also provides mechanisms for determining and modifying some\r | |
8 | attributes of the firmware volume.\r | |
9 | \r | |
10 | Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
11 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
12 | \r | |
13 | @par Revision Reference:\r | |
14 | This protocol is defined in Firmware Volume specification.\r | |
15 | Version 0.9.\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | #ifndef _FIRMWARE_VOLUME_H_\r | |
20 | #define _FIRMWARE_VOLUME_H_\r | |
21 | \r | |
22 | \r | |
23 | //\r | |
24 | // Firmware Volume Protocol GUID definition\r | |
25 | //\r | |
26 | #define EFI_FIRMWARE_VOLUME_PROTOCOL_GUID \\r | |
27 | { \\r | |
28 | 0x389F751F, 0x1838, 0x4388, {0x83, 0x90, 0xCD, 0x81, 0x54, 0xBD, 0x27, 0xF8 } \\r | |
29 | }\r | |
30 | \r | |
31 | #define FV_DEVICE_SIGNATURE SIGNATURE_32 ('_', 'F', 'V', '_')\r | |
32 | \r | |
33 | typedef struct _EFI_FIRMWARE_VOLUME_PROTOCOL EFI_FIRMWARE_VOLUME_PROTOCOL;\r | |
34 | \r | |
35 | //\r | |
36 | // FRAMEWORK_EFI_FV_ATTRIBUTES bit definitions\r | |
37 | //\r | |
38 | typedef UINT64 FRAMEWORK_EFI_FV_ATTRIBUTES;\r | |
39 | \r | |
40 | //\r | |
41 | // ************************************************************\r | |
42 | // FRAMEWORK_EFI_FV_ATTRIBUTES bit definitions\r | |
43 | // ************************************************************\r | |
44 | //\r | |
45 | #define EFI_FV_READ_DISABLE_CAP 0x0000000000000001ULL\r | |
46 | #define EFI_FV_READ_ENABLE_CAP 0x0000000000000002ULL\r | |
47 | #define EFI_FV_READ_STATUS 0x0000000000000004ULL\r | |
48 | \r | |
49 | #define EFI_FV_WRITE_DISABLE_CAP 0x0000000000000008ULL\r | |
50 | #define EFI_FV_WRITE_ENABLE_CAP 0x0000000000000010ULL\r | |
51 | #define EFI_FV_WRITE_STATUS 0x0000000000000020ULL\r | |
52 | \r | |
53 | #define EFI_FV_LOCK_CAP 0x0000000000000040ULL\r | |
54 | #define EFI_FV_LOCK_STATUS 0x0000000000000080ULL\r | |
55 | #define EFI_FV_WRITE_POLICY_RELIABLE 0x0000000000000100ULL\r | |
56 | \r | |
57 | #define EFI_FV_ALIGNMENT_CAP 0x0000000000008000ULL\r | |
58 | #define EFI_FV_ALIGNMENT_2 0x0000000000010000ULL\r | |
59 | #define EFI_FV_ALIGNMENT_4 0x0000000000020000ULL\r | |
60 | #define EFI_FV_ALIGNMENT_8 0x0000000000040000ULL\r | |
61 | #define EFI_FV_ALIGNMENT_16 0x0000000000080000ULL\r | |
62 | #define EFI_FV_ALIGNMENT_32 0x0000000000100000ULL\r | |
63 | #define EFI_FV_ALIGNMENT_64 0x0000000000200000ULL\r | |
64 | #define EFI_FV_ALIGNMENT_128 0x0000000000400000ULL\r | |
65 | #define EFI_FV_ALIGNMENT_256 0x0000000000800000ULL\r | |
66 | #define EFI_FV_ALIGNMENT_512 0x0000000001000000ULL\r | |
67 | #define EFI_FV_ALIGNMENT_1K 0x0000000002000000ULL\r | |
68 | #define EFI_FV_ALIGNMENT_2K 0x0000000004000000ULL\r | |
69 | #define EFI_FV_ALIGNMENT_4K 0x0000000008000000ULL\r | |
70 | #define EFI_FV_ALIGNMENT_8K 0x0000000010000000ULL\r | |
71 | #define EFI_FV_ALIGNMENT_16K 0x0000000020000000ULL\r | |
72 | #define EFI_FV_ALIGNMENT_32K 0x0000000040000000ULL\r | |
73 | #define EFI_FV_ALIGNMENT_64K 0x0000000080000000ULL\r | |
74 | \r | |
75 | //\r | |
76 | // Protocol API definitions\r | |
77 | //\r | |
78 | \r | |
79 | /**\r | |
80 | Retrieves attributes, insures positive polarity of attribute bits, and returns\r | |
81 | resulting attributes in an output parameter.\r | |
82 | \r | |
83 | @param This Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.\r | |
84 | @param Attributes Output buffer containing attributes.\r | |
85 | \r | |
86 | @retval EFI_SUCCESS The firmware volume attributes were returned.\r | |
87 | **/\r | |
88 | typedef\r | |
89 | EFI_STATUS\r | |
90 | (EFIAPI *FRAMEWORK_EFI_FV_GET_ATTRIBUTES)(\r | |
91 | IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,\r | |
92 | OUT FRAMEWORK_EFI_FV_ATTRIBUTES *Attributes\r | |
93 | );\r | |
94 | \r | |
95 | /**\r | |
96 | Sets volume attributes\r | |
97 | \r | |
98 | @param This Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.\r | |
99 | @param Attributes On input, Attributes is a pointer to an\r | |
100 | EFI_FV_ATTRIBUTES containing the desired firmware\r | |
101 | volume settings. On successful return, it contains\r | |
102 | the new settings of the firmware volume. On\r | |
103 | unsuccessful return, Attributes is not modified\r | |
104 | and the firmware volume settings are not changed.\r | |
105 | \r | |
106 | @retval EFI_INVALID_PARAMETER A bit in Attributes was invalid.\r | |
107 | @retval EFI_SUCCESS The requested firmware volume attributes were set\r | |
108 | and the resulting EFI_FV_ATTRIBUTES is returned in\r | |
109 | Attributes.\r | |
110 | @retval EFI_ACCESS_DENIED The Device is locked and does not permit modification.\r | |
111 | \r | |
112 | **/\r | |
113 | typedef\r | |
114 | EFI_STATUS\r | |
115 | (EFIAPI *FRAMEWORK_EFI_FV_SET_ATTRIBUTES)(\r | |
116 | IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,\r | |
117 | IN OUT FRAMEWORK_EFI_FV_ATTRIBUTES *Attributes\r | |
118 | );\r | |
119 | \r | |
120 | /**\r | |
121 | Read the requested file (NameGuid) or file information from the firmware volume\r | |
122 | and returns data in Buffer.\r | |
123 | \r | |
124 | @param This The EFI_FIRMWARE_VOLUME_PROTOCOL instance.\r | |
125 | @param NameGuid The pointer to EFI_GUID, which is the filename of\r | |
126 | the file to read.\r | |
127 | @param Buffer The pointer to pointer to buffer in which contents of file are returned.\r | |
128 | <br>\r | |
129 | If Buffer is NULL, only type, attributes, and size\r | |
130 | are returned as there is no output buffer.\r | |
131 | <br>\r | |
132 | If Buffer != NULL and *Buffer == NULL, the output\r | |
133 | buffer is allocated from BS pool by ReadFile.\r | |
134 | <br>\r | |
135 | If Buffer != NULL and *Buffer != NULL, the output\r | |
136 | buffer has been allocated by the caller and is being\r | |
137 | passed in.\r | |
138 | @param BufferSize On input: The buffer size. On output: The size\r | |
139 | required to complete the read.\r | |
140 | @param FoundType The pointer to the type of the file whose data\r | |
141 | is returned.\r | |
142 | @param FileAttributes The pointer to attributes of the file whose data\r | |
143 | is returned.\r | |
144 | @param AuthenticationStatus The pointer to the authentication status of the data.\r | |
145 | \r | |
146 | @retval EFI_SUCCESS The call completed successfully.\r | |
147 | @retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.\r | |
148 | The buffer filled, and the output is truncated.\r | |
149 | @retval EFI_NOT_FOUND NameGuid was not found in the firmware volume.\r | |
150 | @retval EFI_DEVICE_ERROR A hardware error occurred when attempting to\r | |
151 | access the firmware volume.\r | |
152 | @retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.\r | |
153 | @retval EFI_OUT_OF_RESOURCES An allocation failure occurred.\r | |
154 | \r | |
155 | **/\r | |
156 | typedef\r | |
157 | EFI_STATUS\r | |
158 | (EFIAPI *FRAMEWORK_EFI_FV_READ_FILE)(\r | |
159 | IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,\r | |
160 | IN EFI_GUID *NameGuid,\r | |
161 | IN OUT VOID **Buffer,\r | |
162 | IN OUT UINTN *BufferSize,\r | |
163 | OUT EFI_FV_FILETYPE *FoundType,\r | |
164 | OUT EFI_FV_FILE_ATTRIBUTES *FileAttributes,\r | |
165 | OUT UINT32 *AuthenticationStatus\r | |
166 | );\r | |
167 | \r | |
168 | /**\r | |
169 | Read the requested section from the specified file and returns data in Buffer.\r | |
170 | \r | |
171 | @param This Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.\r | |
172 | @param NameGuid Filename identifying the file from which to read.\r | |
173 | @param SectionType The section type to retrieve.\r | |
174 | @param SectionInstance The instance of SectionType to retrieve.\r | |
175 | @param Buffer Pointer to pointer to buffer in which contents of\r | |
176 | a file are returned.\r | |
177 | <br>\r | |
178 | If Buffer is NULL, only type, attributes, and size\r | |
179 | are returned as there is no output buffer.\r | |
180 | <br>\r | |
181 | If Buffer != NULL and *Buffer == NULL, the output\r | |
182 | buffer is allocated from BS pool by ReadFile.\r | |
183 | <br>\r | |
184 | If Buffer != NULL and *Buffer != NULL, the output\r | |
185 | buffer has been allocated by the caller and is being\r | |
186 | passed in.\r | |
187 | @param BufferSize The pointer to the buffer size passed in, and on\r | |
188 | output the size required to complete the read.\r | |
189 | @param AuthenticationStatus The pointer to the authentication status of the data.\r | |
190 | \r | |
191 | @retval EFI_SUCCESS The call completed successfully.\r | |
192 | @retval EFI_WARN_BUFFER_TOO_SMALL The buffer is too small to contain the requested output.\r | |
193 | The buffer is filled and the output is truncated.\r | |
194 | @retval EFI_OUT_OF_RESOURCES An allocation failure occurred.\r | |
195 | @retval EFI_NOT_FOUND The name was not found in the firmware volume.\r | |
196 | @retval EFI_DEVICE_ERROR A hardware error occurred when attempting to\r | |
197 | access the firmware volume.\r | |
198 | @retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.\r | |
199 | \r | |
200 | **/\r | |
201 | typedef\r | |
202 | EFI_STATUS\r | |
203 | (EFIAPI *FRAMEWORK_EFI_FV_READ_SECTION)(\r | |
204 | IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,\r | |
205 | IN EFI_GUID *NameGuid,\r | |
206 | IN EFI_SECTION_TYPE SectionType,\r | |
207 | IN UINTN SectionInstance,\r | |
208 | IN OUT VOID **Buffer,\r | |
209 | IN OUT UINTN *BufferSize,\r | |
210 | OUT UINT32 *AuthenticationStatus\r | |
211 | );\r | |
212 | \r | |
213 | typedef UINT32 FRAMEWORK_EFI_FV_WRITE_POLICY;\r | |
214 | \r | |
215 | #define FRAMEWORK_EFI_FV_UNRELIABLE_WRITE 0x00000000\r | |
216 | #define FRAMEWORK_EFI_FV_RELIABLE_WRITE 0x00000001\r | |
217 | \r | |
218 | typedef struct {\r | |
219 | EFI_GUID *NameGuid;\r | |
220 | EFI_FV_FILETYPE Type;\r | |
221 | EFI_FV_FILE_ATTRIBUTES FileAttributes;\r | |
222 | VOID *Buffer;\r | |
223 | UINT32 BufferSize;\r | |
224 | } FRAMEWORK_EFI_FV_WRITE_FILE_DATA;\r | |
225 | \r | |
226 | /**\r | |
227 | Write the supplied file (NameGuid) to the FV.\r | |
228 | \r | |
229 | @param This Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.\r | |
230 | @param NumberOfFiles Indicates the number of file records pointed to\r | |
231 | by FileData.\r | |
232 | @param WritePolicy Indicates the level of reliability of the write\r | |
233 | with respect to things like power failure events.\r | |
234 | @param FileData A pointer to an array of EFI_FV_WRITE_FILE_DATA\r | |
235 | structures. Each element in the array indicates\r | |
236 | a file to write, and there are NumberOfFiles\r | |
237 | elements in the input array.\r | |
238 | \r | |
239 | @retval EFI_SUCCESS The write completed successfully.\r | |
240 | @retval EFI_OUT_OF_RESOURCES The firmware volume does not have enough free\r | |
241 | space to store file(s).\r | |
242 | @retval EFI_DEVICE_ERROR A hardware error occurred when attempting to\r | |
243 | access the firmware volume.\r | |
244 | @retval EFI_WRITE_PROTECTED The firmware volume is configured to disallow writes.\r | |
245 | @retval EFI_NOT_FOUND A delete was requested, but the requested file was\r | |
246 | not found in the firmware volume.\r | |
247 | @retval EFI_INVALID_PARAMETER A delete was requested with a multiple file write.\r | |
248 | An unsupported WritePolicy was requested.\r | |
249 | An unknown file type was specified.\r | |
250 | A file system specific error has occurred.\r | |
251 | **/\r | |
252 | typedef\r | |
253 | EFI_STATUS\r | |
254 | (EFIAPI *FRAMEWORK_EFI_FV_WRITE_FILE)(\r | |
255 | IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,\r | |
256 | IN UINT32 NumberOfFiles,\r | |
257 | IN FRAMEWORK_EFI_FV_WRITE_POLICY WritePolicy,\r | |
258 | IN FRAMEWORK_EFI_FV_WRITE_FILE_DATA *FileData\r | |
259 | );\r | |
260 | \r | |
261 | /**\r | |
262 | Given the input key, search for the next matching file in the volume.\r | |
263 | \r | |
264 | @param This Indicates the EFI_FIRMWARE_VOLUME_PROTOCOL instance.\r | |
265 | @param Key Pointer to a caller allocated buffer that contains\r | |
266 | an implementation-specific key that is used to track\r | |
267 | where to begin searching on successive calls.\r | |
268 | @param FileType The pointer to the file type to filter for.\r | |
269 | @param NameGuid The pointer to Guid filename of the file found.\r | |
270 | @param Attributes The pointer to Attributes of the file found.\r | |
271 | @param Size The pointer to Size in bytes of the file found.\r | |
272 | \r | |
273 | @retval EFI_SUCCESS The output parameters are filled with data obtained from\r | |
274 | the first matching file that was found.\r | |
275 | @retval EFI_NOT_FOUND No files of type FileType were found.\r | |
276 | @retval EFI_DEVICE_ERROR A hardware error occurred when attempting to access\r | |
277 | the firmware volume.\r | |
278 | @retval EFI_ACCESS_DENIED The firmware volume is configured to disallow reads.\r | |
279 | \r | |
280 | **/\r | |
281 | typedef\r | |
282 | EFI_STATUS\r | |
283 | (EFIAPI *FRAMEWORK_EFI_FV_GET_NEXT_FILE)(\r | |
284 | IN EFI_FIRMWARE_VOLUME_PROTOCOL *This,\r | |
285 | IN OUT VOID *Key,\r | |
286 | IN OUT EFI_FV_FILETYPE *FileType,\r | |
287 | OUT EFI_GUID *NameGuid,\r | |
288 | OUT EFI_FV_FILE_ATTRIBUTES *Attributes,\r | |
289 | OUT UINTN *Size\r | |
290 | );\r | |
291 | \r | |
292 | //\r | |
293 | // Protocol interface structure\r | |
294 | //\r | |
295 | struct _EFI_FIRMWARE_VOLUME_PROTOCOL {\r | |
296 | ///\r | |
297 | /// Retrieves volume capabilities and current settings.\r | |
298 | ///\r | |
299 | FRAMEWORK_EFI_FV_GET_ATTRIBUTES GetVolumeAttributes;\r | |
300 | \r | |
301 | ///\r | |
302 | /// Modifies the current settings of the firmware volume.\r | |
303 | ///\r | |
304 | FRAMEWORK_EFI_FV_SET_ATTRIBUTES SetVolumeAttributes;\r | |
305 | \r | |
306 | ///\r | |
307 | /// Reads an entire file from the firmware volume.\r | |
308 | ///\r | |
309 | FRAMEWORK_EFI_FV_READ_FILE ReadFile;\r | |
310 | \r | |
311 | ///\r | |
312 | /// Reads a single section from a file into a buffer.\r | |
313 | ///\r | |
314 | FRAMEWORK_EFI_FV_READ_SECTION ReadSection;\r | |
315 | \r | |
316 | ///\r | |
317 | /// Writes an entire file into the firmware volume.\r | |
318 | ///\r | |
319 | FRAMEWORK_EFI_FV_WRITE_FILE WriteFile;\r | |
320 | \r | |
321 | ///\r | |
322 | /// Provides service to allow searching the firmware volume.\r | |
323 | ///\r | |
324 | FRAMEWORK_EFI_FV_GET_NEXT_FILE GetNextFile;\r | |
325 | \r | |
326 | ///\r | |
327 | /// Data field that indicates the size in bytes of the Key input buffer for\r | |
328 | /// the GetNextFile() API.\r | |
329 | ///\r | |
330 | UINT32 KeySize;\r | |
331 | \r | |
332 | ///\r | |
333 | /// Handle of the parent firmware volume.\r | |
334 | ///\r | |
335 | EFI_HANDLE ParentHandle;\r | |
336 | };\r | |
337 | \r | |
338 | extern EFI_GUID gEfiFirmwareVolumeProtocolGuid;\r | |
339 | \r | |
340 | #endif\r |