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23c98c94 | 1 | /** @file\r |
504214c4 | 2 | Implements functions to read firmware file\r |
28a00297 | 3 | \r |
e411f8ca | 4 | Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r |
cd5ebaa0 | 5 | This program and the accompanying materials\r |
23c98c94 | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
28a00297 | 12 | \r |
504214c4 | 13 | **/\r |
28a00297 | 14 | \r |
9c4ac31c | 15 | #include "DxeMain.h"\r |
ec90508b | 16 | #include "FwVolDriver.h"\r |
28a00297 | 17 | \r |
ec90508b | 18 | /**\r |
e411f8ca SZ |
19 | Required Alignment Alignment Value in FFS FFS_ATTRIB_DATA_ALIGNMENT2 Alignment Value in\r |
20 | (bytes) Attributes Field in FFS Attributes Field Firmware Volume Interfaces\r | |
21 | 1 0 0 0\r | |
22 | 16 1 0 4\r | |
23 | 128 2 0 7\r | |
24 | 512 3 0 9\r | |
25 | 1 KB 4 0 10\r | |
26 | 4 KB 5 0 12\r | |
27 | 32 KB 6 0 15\r | |
28 | 64 KB 7 0 16\r | |
29 | 128 KB 0 1 17\r | |
30 | 256 KB 1 1 18\r | |
31 | 512 KB 2 1 19\r | |
32 | 1 MB 3 1 20\r | |
33 | 2 MB 4 1 21\r | |
34 | 4 MB 5 1 22\r | |
35 | 8 MB 6 1 23\r | |
36 | 16 MB 7 1 24\r | |
ec90508b | 37 | **/\r |
022c6d45 | 38 | UINT8 mFvAttributes[] = {0, 4, 7, 9, 10, 12, 15, 16};\r |
e411f8ca | 39 | UINT8 mFvAttributes2[] = {17, 18, 19, 20, 21, 22, 23, 24};\r |
28a00297 | 40 | \r |
162ed594 | 41 | /**\r |
42 | Convert the FFS File Attributes to FV File Attributes\r | |
43 | \r | |
022c6d45 | 44 | @param FfsAttributes The attributes of UINT8 type.\r |
162ed594 | 45 | \r |
46 | @return The attributes of EFI_FV_FILE_ATTRIBUTES\r | |
47 | \r | |
48 | **/\r | |
28a00297 | 49 | EFI_FV_FILE_ATTRIBUTES\r |
50 | FfsAttributes2FvFileAttributes (\r | |
51 | IN EFI_FFS_FILE_ATTRIBUTES FfsAttributes\r | |
52 | )\r | |
28a00297 | 53 | {\r |
795bb9b6 SZ |
54 | UINT8 DataAlignment;\r |
55 | EFI_FV_FILE_ATTRIBUTES FileAttribute;\r | |
28a00297 | 56 | \r |
795bb9b6 SZ |
57 | DataAlignment = (UINT8) ((FfsAttributes & FFS_ATTRIB_DATA_ALIGNMENT) >> 3);\r |
58 | ASSERT (DataAlignment < 8);\r | |
28a00297 | 59 | \r |
e411f8ca SZ |
60 | if ((FfsAttributes & FFS_ATTRIB_DATA_ALIGNMENT_2) != 0) {\r |
61 | FileAttribute = (EFI_FV_FILE_ATTRIBUTES) mFvAttributes2[DataAlignment];\r | |
62 | } else {\r | |
63 | FileAttribute = (EFI_FV_FILE_ATTRIBUTES) mFvAttributes[DataAlignment];\r | |
64 | }\r | |
28a00297 | 65 | \r |
795bb9b6 SZ |
66 | if ((FfsAttributes & FFS_ATTRIB_FIXED) == FFS_ATTRIB_FIXED) {\r |
67 | FileAttribute |= EFI_FV_FILE_ATTRIB_FIXED;\r | |
68 | }\r | |
69 | \r | |
70 | return FileAttribute;\r | |
71 | }\r | |
162ed594 | 72 | \r |
73 | /**\r | |
74 | Given the input key, search for the next matching file in the volume.\r | |
75 | \r | |
022c6d45 | 76 | @param This Indicates the calling context.\r |
77 | @param Key Key is a pointer to a caller allocated\r | |
78 | buffer that contains implementation specific\r | |
79 | data that is used to track where to begin\r | |
80 | the search for the next file. The size of\r | |
81 | the buffer must be at least This->KeySize\r | |
82 | bytes long. To reinitialize the search and\r | |
83 | begin from the beginning of the firmware\r | |
84 | volume, the entire buffer must be cleared to\r | |
85 | zero. Other than clearing the buffer to\r | |
86 | initiate a new search, the caller must not\r | |
87 | modify the data in the buffer between calls\r | |
88 | to GetNextFile().\r | |
89 | @param FileType FileType is a pointer to a caller allocated\r | |
90 | EFI_FV_FILETYPE. The GetNextFile() API can\r | |
91 | filter it's search for files based on the\r | |
92 | value of *FileType input. A *FileType input\r | |
93 | of 0 causes GetNextFile() to search for\r | |
94 | files of all types. If a file is found, the\r | |
95 | file's type is returned in *FileType.\r | |
96 | *FileType is not modified if no file is\r | |
97 | found.\r | |
98 | @param NameGuid NameGuid is a pointer to a caller allocated\r | |
99 | EFI_GUID. If a file is found, the file's\r | |
100 | name is returned in *NameGuid. *NameGuid is\r | |
101 | not modified if no file is found.\r | |
102 | @param Attributes Attributes is a pointer to a caller\r | |
103 | allocated EFI_FV_FILE_ATTRIBUTES. If a file\r | |
104 | is found, the file's attributes are returned\r | |
105 | in *Attributes. *Attributes is not modified\r | |
106 | if no file is found.\r | |
107 | @param Size Size is a pointer to a caller allocated\r | |
108 | UINTN. If a file is found, the file's size\r | |
109 | is returned in *Size. *Size is not modified\r | |
110 | if no file is found.\r | |
111 | \r | |
112 | @retval EFI_SUCCESS Successfully find the file.\r | |
113 | @retval EFI_DEVICE_ERROR Device error.\r | |
114 | @retval EFI_ACCESS_DENIED Fv could not read.\r | |
115 | @retval EFI_NOT_FOUND No matching file found.\r | |
162ed594 | 116 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
117 | \r | |
118 | **/\r | |
28a00297 | 119 | EFI_STATUS\r |
120 | EFIAPI\r | |
121 | FvGetNextFile (\r | |
0c2b5da8 | 122 | IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r |
123 | IN OUT VOID *Key,\r | |
124 | IN OUT EFI_FV_FILETYPE *FileType,\r | |
28a00297 | 125 | OUT EFI_GUID *NameGuid,\r |
126 | OUT EFI_FV_FILE_ATTRIBUTES *Attributes,\r | |
162ed594 | 127 | OUT UINTN *Size\r |
28a00297 | 128 | )\r |
28a00297 | 129 | {\r |
130 | EFI_STATUS Status;\r | |
131 | FV_DEVICE *FvDevice;\r | |
132 | EFI_FV_ATTRIBUTES FvAttributes;\r | |
133 | EFI_FFS_FILE_HEADER *FfsFileHeader;\r | |
134 | UINTN *KeyValue;\r | |
135 | LIST_ENTRY *Link;\r | |
136 | FFS_FILE_LIST_ENTRY *FfsFileEntry;\r | |
28a00297 | 137 | \r |
138 | FvDevice = FV_DEVICE_FROM_THIS (This);\r | |
139 | \r | |
140 | Status = FvGetVolumeAttributes (This, &FvAttributes);\r | |
141 | if (EFI_ERROR (Status)){\r | |
142 | return Status;\r | |
143 | }\r | |
144 | \r | |
145 | //\r | |
146 | // Check if read operation is enabled\r | |
147 | //\r | |
0c2b5da8 | 148 | if ((FvAttributes & EFI_FV2_READ_STATUS) == 0) {\r |
28a00297 | 149 | return EFI_ACCESS_DENIED;\r |
150 | }\r | |
151 | \r | |
202c3279 | 152 | if (*FileType > EFI_FV_FILETYPE_SMM_CORE) {\r |
28a00297 | 153 | //\r |
202c3279 | 154 | // File type needs to be in 0 - 0x0D\r |
28a00297 | 155 | //\r |
26fa3b49 | 156 | return EFI_NOT_FOUND;\r |
28a00297 | 157 | }\r |
158 | \r | |
159 | KeyValue = (UINTN *)Key;\r | |
160 | for (;;) {\r | |
161 | if (*KeyValue == 0) {\r | |
162 | //\r | |
163 | // Search for 1st matching file\r | |
164 | //\r | |
165 | Link = &FvDevice->FfsFileListHeader;\r | |
166 | } else {\r | |
167 | //\r | |
168 | // Key is pointer to FFsFileEntry, so get next one\r | |
169 | //\r | |
170 | Link = (LIST_ENTRY *)(*KeyValue);\r | |
171 | }\r | |
172 | \r | |
173 | if (Link->ForwardLink == &FvDevice->FfsFileListHeader) {\r | |
174 | //\r | |
175 | // Next is end of list so we did not find data\r | |
176 | //\r | |
177 | return EFI_NOT_FOUND;\r | |
178 | }\r | |
179 | \r | |
180 | FfsFileEntry = (FFS_FILE_LIST_ENTRY *)Link->ForwardLink;\r | |
181 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)FfsFileEntry->FfsHeader;\r | |
182 | \r | |
183 | //\r | |
184 | // remember the key\r | |
185 | //\r | |
186 | *KeyValue = (UINTN)FfsFileEntry;\r | |
187 | \r | |
188 | if (FfsFileHeader->Type == EFI_FV_FILETYPE_FFS_PAD) {\r | |
189 | //\r | |
190 | // we ignore pad files\r | |
191 | //\r | |
192 | continue;\r | |
193 | }\r | |
194 | \r | |
ef816997 | 195 | if (*FileType == EFI_FV_FILETYPE_ALL) {\r |
28a00297 | 196 | //\r |
197 | // Process all file types so we have a match\r | |
198 | //\r | |
199 | break;\r | |
200 | }\r | |
201 | \r | |
202 | if (*FileType == FfsFileHeader->Type) {\r | |
203 | //\r | |
204 | // Found a matching file type\r | |
205 | //\r | |
206 | break;\r | |
207 | }\r | |
208 | \r | |
022c6d45 | 209 | }\r |
28a00297 | 210 | \r |
211 | //\r | |
212 | // Return FileType, NameGuid, and Attributes\r | |
213 | //\r | |
214 | *FileType = FfsFileHeader->Type;\r | |
e94a9ff7 | 215 | CopyGuid (NameGuid, &FfsFileHeader->Name);\r |
28a00297 | 216 | *Attributes = FfsAttributes2FvFileAttributes (FfsFileHeader->Attributes);\r |
795bb9b6 SZ |
217 | if ((FvDevice->FwVolHeader->Attributes & EFI_FVB2_MEMORY_MAPPED) == EFI_FVB2_MEMORY_MAPPED) {\r |
218 | *Attributes |= EFI_FV_FILE_ATTRIB_MEMORY_MAPPED;\r | |
219 | }\r | |
28a00297 | 220 | \r |
28a00297 | 221 | //\r |
222 | // we need to substract the header size\r | |
223 | //\r | |
6c85d162 SZ |
224 | if (IS_FFS_FILE2 (FfsFileHeader)) {\r |
225 | *Size = FFS_FILE2_SIZE (FfsFileHeader) - sizeof (EFI_FFS_FILE_HEADER2);\r | |
226 | } else {\r | |
227 | *Size = FFS_FILE_SIZE (FfsFileHeader) - sizeof (EFI_FFS_FILE_HEADER);\r | |
228 | }\r | |
28a00297 | 229 | \r |
28a00297 | 230 | return EFI_SUCCESS;\r |
231 | }\r | |
232 | \r | |
233 | \r | |
162ed594 | 234 | \r |
235 | /**\r | |
236 | Locates a file in the firmware volume and\r | |
237 | copies it to the supplied buffer.\r | |
238 | \r | |
022c6d45 | 239 | @param This Indicates the calling context.\r |
240 | @param NameGuid Pointer to an EFI_GUID, which is the\r | |
241 | filename.\r | |
242 | @param Buffer Buffer is a pointer to pointer to a buffer\r | |
243 | in which the file or section contents or are\r | |
244 | returned.\r | |
245 | @param BufferSize BufferSize is a pointer to caller allocated\r | |
246 | UINTN. On input *BufferSize indicates the\r | |
247 | size in bytes of the memory region pointed\r | |
248 | to by Buffer. On output, *BufferSize\r | |
249 | contains the number of bytes required to\r | |
250 | read the file.\r | |
251 | @param FoundType FoundType is a pointer to a caller allocated\r | |
252 | EFI_FV_FILETYPE that on successful return\r | |
253 | from Read() contains the type of file read.\r | |
254 | This output reflects the file type\r | |
255 | irrespective of the value of the SectionType\r | |
256 | input.\r | |
257 | @param FileAttributes FileAttributes is a pointer to a caller\r | |
258 | allocated EFI_FV_FILE_ATTRIBUTES. On\r | |
259 | successful return from Read(),\r | |
260 | *FileAttributes contains the attributes of\r | |
261 | the file read.\r | |
262 | @param AuthenticationStatus AuthenticationStatus is a pointer to a\r | |
263 | caller allocated UINTN in which the\r | |
264 | authentication status is returned.\r | |
265 | \r | |
266 | @retval EFI_SUCCESS Successfully read to memory buffer.\r | |
267 | @retval EFI_WARN_BUFFER_TOO_SMALL Buffer too small.\r | |
268 | @retval EFI_NOT_FOUND Not found.\r | |
269 | @retval EFI_DEVICE_ERROR Device error.\r | |
270 | @retval EFI_ACCESS_DENIED Could not read.\r | |
271 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
162ed594 | 272 | @retval EFI_OUT_OF_RESOURCES Not enough buffer to be allocated.\r |
273 | \r | |
274 | **/\r | |
28a00297 | 275 | EFI_STATUS\r |
276 | EFIAPI\r | |
277 | FvReadFile (\r | |
0c2b5da8 | 278 | IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r |
279 | IN CONST EFI_GUID *NameGuid,\r | |
280 | IN OUT VOID **Buffer,\r | |
281 | IN OUT UINTN *BufferSize,\r | |
282 | OUT EFI_FV_FILETYPE *FoundType,\r | |
283 | OUT EFI_FV_FILE_ATTRIBUTES *FileAttributes,\r | |
284 | OUT UINT32 *AuthenticationStatus\r | |
28a00297 | 285 | )\r |
28a00297 | 286 | {\r |
287 | EFI_STATUS Status;\r | |
288 | FV_DEVICE *FvDevice;\r | |
289 | EFI_GUID SearchNameGuid;\r | |
290 | EFI_FV_FILETYPE LocalFoundType;\r | |
291 | EFI_FV_FILE_ATTRIBUTES LocalAttributes;\r | |
292 | UINTN FileSize;\r | |
293 | UINT8 *SrcPtr;\r | |
294 | EFI_FFS_FILE_HEADER *FfsHeader;\r | |
295 | UINTN InputBufferSize;\r | |
eb1cace2 | 296 | UINTN WholeFileSize;\r |
022c6d45 | 297 | \r |
e94a9ff7 | 298 | if (NameGuid == NULL) {\r |
28a00297 | 299 | return EFI_INVALID_PARAMETER;\r |
300 | }\r | |
301 | \r | |
302 | FvDevice = FV_DEVICE_FROM_THIS (This);\r | |
022c6d45 | 303 | \r |
28a00297 | 304 | \r |
305 | //\r | |
306 | // Keep looking until we find the matching NameGuid.\r | |
eb1cace2 | 307 | // The Key is really a FfsFileEntry\r |
28a00297 | 308 | //\r |
309 | FvDevice->LastKey = 0;\r | |
310 | do {\r | |
311 | LocalFoundType = 0;\r | |
312 | Status = FvGetNextFile (\r | |
313 | This,\r | |
314 | &FvDevice->LastKey,\r | |
315 | &LocalFoundType,\r | |
316 | &SearchNameGuid,\r | |
317 | &LocalAttributes,\r | |
318 | &FileSize\r | |
319 | );\r | |
320 | if (EFI_ERROR (Status)) {\r | |
321 | return EFI_NOT_FOUND;\r | |
322 | }\r | |
323 | } while (!CompareGuid (&SearchNameGuid, NameGuid));\r | |
324 | \r | |
325 | //\r | |
326 | // Get a pointer to the header\r | |
327 | //\r | |
328 | FfsHeader = FvDevice->LastKey->FfsHeader;\r | |
eb1cace2 SZ |
329 | if (FvDevice->IsMemoryMapped) {\r |
330 | //\r | |
331 | // Memory mapped FV has not been cached, so here is to cache by file.\r | |
332 | //\r | |
333 | if (!FvDevice->LastKey->FileCached) {\r | |
334 | //\r | |
335 | // Cache FFS file to memory buffer.\r | |
336 | //\r | |
337 | WholeFileSize = IS_FFS_FILE2 (FfsHeader) ? FFS_FILE2_SIZE (FfsHeader): FFS_FILE_SIZE (FfsHeader);\r | |
338 | FfsHeader = AllocateCopyPool (WholeFileSize, FfsHeader);\r | |
339 | if (FfsHeader == NULL) {\r | |
340 | return EFI_OUT_OF_RESOURCES;\r | |
341 | }\r | |
342 | //\r | |
343 | // Let FfsHeader in FfsFileEntry point to the cached file buffer.\r | |
344 | //\r | |
345 | FvDevice->LastKey->FfsHeader = FfsHeader;\r | |
346 | FvDevice->LastKey->FileCached = TRUE;\r | |
347 | }\r | |
348 | }\r | |
28a00297 | 349 | \r |
350 | //\r | |
351 | // Remember callers buffer size\r | |
352 | //\r | |
353 | InputBufferSize = *BufferSize;\r | |
354 | \r | |
355 | //\r | |
356 | // Calculate return values\r | |
357 | //\r | |
358 | *FoundType = FfsHeader->Type;\r | |
359 | *FileAttributes = FfsAttributes2FvFileAttributes (FfsHeader->Attributes);\r | |
795bb9b6 SZ |
360 | if ((FvDevice->FwVolHeader->Attributes & EFI_FVB2_MEMORY_MAPPED) == EFI_FVB2_MEMORY_MAPPED) {\r |
361 | *FileAttributes |= EFI_FV_FILE_ATTRIB_MEMORY_MAPPED;\r | |
362 | }\r | |
2bc08e8c SZ |
363 | //\r |
364 | // Inherit the authentication status.\r | |
365 | //\r | |
366 | *AuthenticationStatus = FvDevice->AuthenticationStatus;\r | |
28a00297 | 367 | *BufferSize = FileSize;\r |
368 | \r | |
369 | if (Buffer == NULL) {\r | |
370 | //\r | |
d613c2a8 | 371 | // If Buffer is NULL, we only want to get the information collected so far\r |
28a00297 | 372 | //\r |
373 | return EFI_SUCCESS;\r | |
374 | }\r | |
375 | \r | |
376 | //\r | |
377 | // Skip over file header\r | |
378 | //\r | |
6c85d162 SZ |
379 | if (IS_FFS_FILE2 (FfsHeader)) {\r |
380 | SrcPtr = ((UINT8 *) FfsHeader) + sizeof (EFI_FFS_FILE_HEADER2);\r | |
381 | } else {\r | |
382 | SrcPtr = ((UINT8 *) FfsHeader) + sizeof (EFI_FFS_FILE_HEADER);\r | |
383 | }\r | |
28a00297 | 384 | \r |
385 | Status = EFI_SUCCESS;\r | |
386 | if (*Buffer == NULL) {\r | |
387 | //\r | |
388 | // Caller passed in a pointer so allocate buffer for them\r | |
389 | //\r | |
9c4ac31c | 390 | *Buffer = AllocatePool (FileSize);\r |
28a00297 | 391 | if (*Buffer == NULL) {\r |
392 | return EFI_OUT_OF_RESOURCES;\r | |
393 | }\r | |
394 | } else if (FileSize > InputBufferSize) {\r | |
395 | //\r | |
396 | // Callers buffer was not big enough\r | |
022c6d45 | 397 | //\r |
28a00297 | 398 | Status = EFI_WARN_BUFFER_TOO_SMALL;\r |
399 | FileSize = InputBufferSize;\r | |
400 | }\r | |
022c6d45 | 401 | \r |
28a00297 | 402 | //\r |
022c6d45 | 403 | // Copy data into callers buffer\r |
28a00297 | 404 | //\r |
405 | CopyMem (*Buffer, SrcPtr, FileSize);\r | |
406 | \r | |
407 | return Status;\r | |
408 | }\r | |
409 | \r | |
410 | \r | |
162ed594 | 411 | \r |
412 | /**\r | |
413 | Locates a section in a given FFS File and\r | |
414 | copies it to the supplied buffer (not including section header).\r | |
415 | \r | |
022c6d45 | 416 | @param This Indicates the calling context.\r |
417 | @param NameGuid Pointer to an EFI_GUID, which is the\r | |
418 | filename.\r | |
419 | @param SectionType Indicates the section type to return.\r | |
420 | @param SectionInstance Indicates which instance of sections with a\r | |
421 | type of SectionType to return.\r | |
422 | @param Buffer Buffer is a pointer to pointer to a buffer\r | |
423 | in which the file or section contents or are\r | |
424 | returned.\r | |
425 | @param BufferSize BufferSize is a pointer to caller allocated\r | |
162ed594 | 426 | UINTN.\r |
022c6d45 | 427 | @param AuthenticationStatus AuthenticationStatus is a pointer to a\r |
428 | caller allocated UINT32 in which the\r | |
429 | authentication status is returned.\r | |
430 | \r | |
431 | @retval EFI_SUCCESS Successfully read the file section into\r | |
432 | buffer.\r | |
433 | @retval EFI_WARN_BUFFER_TOO_SMALL Buffer too small.\r | |
434 | @retval EFI_NOT_FOUND Section not found.\r | |
435 | @retval EFI_DEVICE_ERROR Device error.\r | |
436 | @retval EFI_ACCESS_DENIED Could not read.\r | |
162ed594 | 437 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r |
438 | \r | |
439 | **/\r | |
28a00297 | 440 | EFI_STATUS\r |
441 | EFIAPI\r | |
442 | FvReadFileSection (\r | |
0c2b5da8 | 443 | IN CONST EFI_FIRMWARE_VOLUME2_PROTOCOL *This,\r |
444 | IN CONST EFI_GUID *NameGuid,\r | |
445 | IN EFI_SECTION_TYPE SectionType,\r | |
446 | IN UINTN SectionInstance,\r | |
447 | IN OUT VOID **Buffer,\r | |
448 | IN OUT UINTN *BufferSize,\r | |
449 | OUT UINT32 *AuthenticationStatus\r | |
28a00297 | 450 | )\r |
28a00297 | 451 | {\r |
452 | EFI_STATUS Status;\r | |
453 | FV_DEVICE *FvDevice;\r | |
454 | EFI_FV_FILETYPE FileType;\r | |
455 | EFI_FV_FILE_ATTRIBUTES FileAttributes;\r | |
456 | UINTN FileSize;\r | |
457 | UINT8 *FileBuffer;\r | |
28a00297 | 458 | FFS_FILE_LIST_ENTRY *FfsEntry;\r |
022c6d45 | 459 | \r |
e94a9ff7 | 460 | if (NameGuid == NULL || Buffer == NULL) {\r |
28a00297 | 461 | return EFI_INVALID_PARAMETER;\r |
462 | }\r | |
463 | \r | |
464 | FvDevice = FV_DEVICE_FROM_THIS (This);\r | |
465 | \r | |
466 | //\r | |
eb1cace2 | 467 | // Read the file\r |
28a00297 | 468 | //\r |
28a00297 | 469 | Status = FvReadFile (\r |
470 | This,\r | |
471 | NameGuid,\r | |
eb1cace2 | 472 | NULL,\r |
28a00297 | 473 | &FileSize,\r |
474 | &FileType,\r | |
475 | &FileAttributes,\r | |
476 | AuthenticationStatus\r | |
022c6d45 | 477 | );\r |
28a00297 | 478 | //\r |
479 | // Get the last key used by our call to FvReadFile as it is the FfsEntry for this file.\r | |
022c6d45 | 480 | //\r |
e94a9ff7 | 481 | FfsEntry = (FFS_FILE_LIST_ENTRY *) FvDevice->LastKey;\r |
28a00297 | 482 | \r |
483 | if (EFI_ERROR (Status)) {\r | |
484 | return Status;\r | |
485 | }\r | |
eb1cace2 SZ |
486 | if (IS_FFS_FILE2 (FfsEntry->FfsHeader)) {\r |
487 | FileBuffer = ((UINT8 *) FfsEntry->FfsHeader) + sizeof (EFI_FFS_FILE_HEADER2);\r | |
488 | } else {\r | |
489 | FileBuffer = ((UINT8 *) FfsEntry->FfsHeader) + sizeof (EFI_FFS_FILE_HEADER);\r | |
490 | }\r | |
28a00297 | 491 | //\r |
492 | // Check to see that the file actually HAS sections before we go any further.\r | |
493 | //\r | |
494 | if (FileType == EFI_FV_FILETYPE_RAW) {\r | |
495 | Status = EFI_NOT_FOUND;\r | |
496 | goto Done;\r | |
497 | }\r | |
498 | \r | |
499 | //\r | |
6c85d162 | 500 | // Use FfsEntry to cache Section Extraction Protocol Information\r |
28a00297 | 501 | //\r |
502 | if (FfsEntry->StreamHandle == 0) {\r | |
797a9d67 | 503 | Status = OpenSectionStream (\r |
e94a9ff7 | 504 | FileSize,\r |
505 | FileBuffer,\r | |
506 | &FfsEntry->StreamHandle\r | |
507 | );\r | |
28a00297 | 508 | if (EFI_ERROR (Status)) {\r |
509 | goto Done;\r | |
510 | }\r | |
28a00297 | 511 | }\r |
512 | \r | |
513 | //\r | |
514 | // If SectionType == 0 We need the whole section stream\r | |
515 | //\r | |
797a9d67 | 516 | Status = GetSection (\r |
517 | FfsEntry->StreamHandle,\r | |
518 | (SectionType == 0) ? NULL : &SectionType,\r | |
519 | NULL,\r | |
520 | (SectionType == 0) ? 0 : SectionInstance,\r | |
521 | Buffer,\r | |
522 | BufferSize,\r | |
6c85d162 SZ |
523 | AuthenticationStatus,\r |
524 | FvDevice->IsFfs3Fv\r | |
797a9d67 | 525 | );\r |
28a00297 | 526 | \r |
0c3a1db4 SZ |
527 | if (!EFI_ERROR (Status)) {\r |
528 | //\r | |
529 | // Inherit the authentication status.\r | |
530 | //\r | |
531 | *AuthenticationStatus |= FvDevice->AuthenticationStatus;\r | |
532 | }\r | |
533 | \r | |
28a00297 | 534 | //\r |
535 | // Close of stream defered to close of FfsHeader list to allow SEP to cache data\r | |
536 | //\r | |
537 | \r | |
538 | Done:\r | |
28a00297 | 539 | return Status;\r |
540 | }\r | |
541 | \r | |
162ed594 | 542 | \r |