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162ed594 | 1 | /** @file\r |
28a00297 | 2 | Firmware File System driver that produce Firmware Volume protocol.\r |
022c6d45 | 3 | Layers on top of Firmware Block protocol to produce a file abstraction\r |
28a00297 | 4 | of FV based files.\r |
23c98c94 | 5 | \r |
6 | Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r | |
7 | All rights reserved. This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
28a00297 | 14 | \r |
15 | **/\r | |
16 | \r | |
9c4ac31c | 17 | #include "DxeMain.h"\r |
ec90508b | 18 | #include "FwVolDriver.h"\r |
28a00297 | 19 | \r |
28a00297 | 20 | \r |
21 | //\r | |
22 | // Protocol notify related globals\r | |
23 | //\r | |
24 | VOID *gEfiFwVolBlockNotifyReg;\r | |
25 | EFI_EVENT gEfiFwVolBlockEvent;\r | |
26 | \r | |
27 | FV_DEVICE mFvDevice = {\r | |
0c2b5da8 | 28 | FV2_DEVICE_SIGNATURE,\r |
28a00297 | 29 | NULL,\r |
30 | NULL,\r | |
31 | {\r | |
32 | FvGetVolumeAttributes,\r | |
33 | FvSetVolumeAttributes,\r | |
34 | FvReadFile,\r | |
35 | FvReadFileSection,\r | |
36 | FvWriteFile,\r | |
ec90508b | 37 | FvGetNextFile, \r |
38 | sizeof (UINTN),\r | |
0c2b5da8 | 39 | NULL,\r |
40 | FvGetVolumeInfo,\r | |
41 | FvSetVolumeInfo\r | |
28a00297 | 42 | },\r |
43 | NULL,\r | |
44 | NULL,\r | |
45 | NULL,\r | |
46 | NULL,\r | |
47 | { NULL, NULL },\r | |
48 | 0\r | |
49 | };\r | |
50 | \r | |
51 | \r | |
52 | //\r | |
53 | // FFS helper functions\r | |
54 | //\r | |
162ed594 | 55 | /**\r |
28a00297 | 56 | given the supplied FW_VOL_BLOCK_PROTOCOL, allocate a buffer for output and\r |
57 | copy the volume header into it.\r | |
58 | \r | |
022c6d45 | 59 | @param Fvb The FW_VOL_BLOCK_PROTOCOL instance from which to\r |
60 | read the volume header\r | |
61 | @param FwVolHeader Pointer to pointer to allocated buffer in which\r | |
62 | the volume header is returned.\r | |
28a00297 | 63 | \r |
022c6d45 | 64 | @retval EFI_OUT_OF_RESOURCES No enough buffer could be allocated.\r |
65 | @retval EFI_SUCCESS Successfully read volume header to the allocated\r | |
162ed594 | 66 | buffer.\r |
28a00297 | 67 | \r |
162ed594 | 68 | **/\r |
69 | EFI_STATUS\r | |
70 | GetFwVolHeader (\r | |
71 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r | |
72 | OUT EFI_FIRMWARE_VOLUME_HEADER **FwVolHeader\r | |
73 | )\r | |
28a00297 | 74 | {\r |
75 | EFI_STATUS Status;\r | |
76 | EFI_FIRMWARE_VOLUME_HEADER TempFvh;\r | |
77 | UINTN FvhLength;\r | |
78 | UINT8 *Buffer;\r | |
79 | \r | |
80 | \r | |
81 | //\r | |
82 | //Determine the real length of FV header\r | |
83 | //\r | |
84 | FvhLength = sizeof (EFI_FIRMWARE_VOLUME_HEADER);\r | |
85 | Status = Fvb->Read (Fvb, 0, 0, &FvhLength, (UINT8 *)&TempFvh);\r | |
13492369 | 86 | if (EFI_ERROR (Status)) {\r |
87 | return Status;\r | |
88 | }\r | |
28a00297 | 89 | \r |
90 | //\r | |
91 | // Allocate a buffer for the caller\r | |
92 | //\r | |
9c4ac31c | 93 | *FwVolHeader = AllocatePool (TempFvh.HeaderLength);\r |
28a00297 | 94 | if (*FwVolHeader == NULL) {\r |
95 | return EFI_OUT_OF_RESOURCES;\r | |
96 | }\r | |
97 | \r | |
98 | //\r | |
99 | // Copy the standard header into the buffer\r | |
100 | //\r | |
101 | CopyMem (*FwVolHeader, &TempFvh, sizeof (EFI_FIRMWARE_VOLUME_HEADER));\r | |
102 | \r | |
103 | //\r | |
104 | // Read the rest of the header\r | |
105 | //\r | |
106 | FvhLength = TempFvh.HeaderLength - sizeof (EFI_FIRMWARE_VOLUME_HEADER);\r | |
107 | Buffer = (UINT8 *)*FwVolHeader + sizeof (EFI_FIRMWARE_VOLUME_HEADER);\r | |
108 | Status = Fvb->Read (Fvb, 0, sizeof (EFI_FIRMWARE_VOLUME_HEADER), &FvhLength, Buffer);\r | |
109 | if (EFI_ERROR (Status)) {\r | |
110 | //\r | |
111 | // Read failed so free buffer\r | |
112 | //\r | |
113 | CoreFreePool (*FwVolHeader);\r | |
114 | }\r | |
022c6d45 | 115 | \r |
28a00297 | 116 | return Status;\r |
117 | }\r | |
118 | \r | |
119 | \r | |
28a00297 | 120 | \r |
162ed594 | 121 | /**\r |
28a00297 | 122 | Free FvDevice resource when error happens\r |
123 | \r | |
022c6d45 | 124 | @param FvDevice pointer to the FvDevice to be freed.\r |
28a00297 | 125 | \r |
162ed594 | 126 | **/\r |
162ed594 | 127 | VOID\r |
128 | FreeFvDeviceResource (\r | |
129 | IN FV_DEVICE *FvDevice\r | |
130 | )\r | |
28a00297 | 131 | {\r |
132 | FFS_FILE_LIST_ENTRY *FfsFileEntry;\r | |
133 | LIST_ENTRY *NextEntry;\r | |
134 | \r | |
135 | //\r | |
136 | // Free File List Entry\r | |
137 | //\r | |
138 | FfsFileEntry = (FFS_FILE_LIST_ENTRY *)FvDevice->FfsFileListHeader.ForwardLink;\r | |
139 | while (&FfsFileEntry->Link != &FvDevice->FfsFileListHeader) {\r | |
140 | NextEntry = (&FfsFileEntry->Link)->ForwardLink;\r | |
022c6d45 | 141 | \r |
28a00297 | 142 | if (FfsFileEntry->StreamHandle != 0) {\r |
143 | //\r | |
144 | // Close stream and free resources from SEP\r | |
145 | //\r | |
797a9d67 | 146 | CloseSectionStream (FfsFileEntry->StreamHandle);\r |
28a00297 | 147 | }\r |
148 | \r | |
149 | CoreFreePool (FfsFileEntry);\r | |
150 | \r | |
e94a9ff7 | 151 | FfsFileEntry = (FFS_FILE_LIST_ENTRY *) NextEntry;\r |
28a00297 | 152 | }\r |
153 | \r | |
154 | \r | |
155 | //\r | |
156 | // Free the cache\r | |
157 | //\r | |
158 | CoreFreePool (FvDevice->CachedFv);\r | |
159 | \r | |
160 | //\r | |
161 | // Free Volume Header\r | |
162 | //\r | |
163 | CoreFreePool (FvDevice->FwVolHeader);\r | |
164 | \r | |
165 | return;\r | |
166 | }\r | |
167 | \r | |
168 | \r | |
28a00297 | 169 | \r |
162ed594 | 170 | /**\r |
e94a9ff7 | 171 | Check if an FV is consistent and allocate cache for it.\r |
28a00297 | 172 | \r |
022c6d45 | 173 | @param FvDevice A pointer to the FvDevice to be checked.\r |
28a00297 | 174 | \r |
022c6d45 | 175 | @retval EFI_OUT_OF_RESOURCES No enough buffer could be allocated.\r |
176 | @retval EFI_SUCCESS FV is consistent and cache is allocated.\r | |
162ed594 | 177 | @retval EFI_VOLUME_CORRUPTED File system is corrupted.\r |
28a00297 | 178 | \r |
162ed594 | 179 | **/\r |
180 | EFI_STATUS\r | |
181 | FvCheck (\r | |
182 | IN OUT FV_DEVICE *FvDevice\r | |
183 | )\r | |
28a00297 | 184 | {\r |
185 | EFI_STATUS Status;\r | |
186 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
187 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
8ee3a199 | 188 | EFI_FVB_ATTRIBUTES_2 FvbAttributes;\r |
28a00297 | 189 | EFI_FV_BLOCK_MAP_ENTRY *BlockMap;\r |
190 | FFS_FILE_LIST_ENTRY *FfsFileEntry;\r | |
191 | EFI_FFS_FILE_HEADER *FfsHeader;\r | |
192 | UINT8 *CacheLocation;\r | |
193 | UINTN LbaOffset;\r | |
194 | UINTN Index;\r | |
195 | EFI_LBA LbaIndex;\r | |
196 | UINTN Size;\r | |
197 | UINTN FileLength;\r | |
198 | EFI_FFS_FILE_STATE FileState;\r | |
199 | UINT8 *TopFvAddress;\r | |
200 | UINTN TestLength;\r | |
201 | \r | |
202 | \r | |
203 | Fvb = FvDevice->Fvb;\r | |
204 | FwVolHeader = FvDevice->FwVolHeader;\r | |
022c6d45 | 205 | \r |
28a00297 | 206 | Status = Fvb->GetAttributes (Fvb, &FvbAttributes);\r |
207 | if (EFI_ERROR (Status)) {\r | |
208 | return Status;\r | |
209 | }\r | |
210 | \r | |
211 | //\r | |
212 | // Size is the size of the FV minus the head. We have already allocated\r | |
213 | // the header to check to make sure the volume is valid\r | |
214 | //\r | |
215 | Size = (UINTN)(FwVolHeader->FvLength - FwVolHeader->HeaderLength);\r | |
9c4ac31c | 216 | FvDevice->CachedFv = AllocatePool (Size);\r |
28a00297 | 217 | \r |
218 | if (FvDevice->CachedFv == NULL) {\r | |
219 | return EFI_OUT_OF_RESOURCES;\r | |
220 | }\r | |
221 | \r | |
222 | //\r | |
223 | // Remember a pointer to the end fo the CachedFv\r | |
224 | //\r | |
225 | FvDevice->EndOfCachedFv = FvDevice->CachedFv + Size;\r | |
226 | \r | |
227 | //\r | |
228 | // Copy FV minus header into memory using the block map we have all ready\r | |
229 | // read into memory.\r | |
230 | //\r | |
231 | BlockMap = FwVolHeader->BlockMap;\r | |
232 | CacheLocation = FvDevice->CachedFv;\r | |
233 | LbaIndex = 0;\r | |
234 | LbaOffset = FwVolHeader->HeaderLength;\r | |
235 | while ((BlockMap->NumBlocks != 0) || (BlockMap->Length != 0)) {\r | |
022c6d45 | 236 | \r |
28a00297 | 237 | for (Index = 0; Index < BlockMap->NumBlocks; Index ++) {\r |
238 | \r | |
239 | Size = BlockMap->Length;\r | |
240 | if (Index == 0) {\r | |
241 | //\r | |
242 | // Cache does not include FV Header\r | |
243 | //\r | |
244 | Size -= LbaOffset;\r | |
245 | }\r | |
246 | Status = Fvb->Read (Fvb,\r | |
e94a9ff7 | 247 | LbaIndex,\r |
248 | LbaOffset,\r | |
249 | &Size,\r | |
250 | CacheLocation\r | |
251 | );\r | |
28a00297 | 252 | //\r |
253 | // Not check EFI_BAD_BUFFER_SIZE, for Size = BlockMap->Length\r | |
254 | //\r | |
255 | if (EFI_ERROR (Status)) {\r | |
256 | goto Done;\r | |
257 | }\r | |
022c6d45 | 258 | \r |
28a00297 | 259 | //\r |
260 | // After we skip Fv Header always read from start of block\r | |
261 | //\r | |
262 | LbaOffset = 0;\r | |
263 | \r | |
264 | LbaIndex++;\r | |
265 | CacheLocation += Size;\r | |
266 | }\r | |
267 | BlockMap++;\r | |
268 | }\r | |
269 | \r | |
270 | //\r | |
271 | // Scan to check the free space & File list\r | |
272 | //\r | |
71f68914 | 273 | if ((FvbAttributes & EFI_FVB2_ERASE_POLARITY) != 0) {\r |
28a00297 | 274 | FvDevice->ErasePolarity = 1;\r |
275 | } else {\r | |
276 | FvDevice->ErasePolarity = 0;\r | |
022c6d45 | 277 | }\r |
28a00297 | 278 | \r |
279 | \r | |
280 | //\r | |
281 | // go through the whole FV cache, check the consistence of the FV.\r | |
282 | // Make a linked list off all the Ffs file headers\r | |
283 | //\r | |
284 | Status = EFI_SUCCESS;\r | |
285 | InitializeListHead (&FvDevice->FfsFileListHeader);\r | |
286 | \r | |
287 | //\r | |
288 | // Build FFS list\r | |
289 | //\r | |
e94a9ff7 | 290 | FfsHeader = (EFI_FFS_FILE_HEADER *) FvDevice->CachedFv;\r |
28a00297 | 291 | TopFvAddress = FvDevice->EndOfCachedFv;\r |
e94a9ff7 | 292 | while ((UINT8 *) FfsHeader < TopFvAddress) {\r |
28a00297 | 293 | \r |
e94a9ff7 | 294 | TestLength = TopFvAddress - ((UINT8 *) FfsHeader);\r |
28a00297 | 295 | if (TestLength > sizeof (EFI_FFS_FILE_HEADER)) {\r |
296 | TestLength = sizeof (EFI_FFS_FILE_HEADER);\r | |
297 | }\r | |
298 | \r | |
299 | if (IsBufferErased (FvDevice->ErasePolarity, FfsHeader, TestLength)) {\r | |
300 | //\r | |
301 | // We have found the free space so we are done!\r | |
302 | //\r | |
303 | goto Done;\r | |
304 | }\r | |
305 | \r | |
306 | if (!IsValidFfsHeader (FvDevice->ErasePolarity, FfsHeader, &FileState)) {\r | |
022c6d45 | 307 | if ((FileState == EFI_FILE_HEADER_INVALID) ||\r |
28a00297 | 308 | (FileState == EFI_FILE_HEADER_CONSTRUCTION)) {\r |
309 | FfsHeader++;\r | |
28a00297 | 310 | continue;\r |
28a00297 | 311 | } else {\r |
312 | //\r | |
313 | // File system is corrputed\r | |
314 | //\r | |
315 | Status = EFI_VOLUME_CORRUPTED;\r | |
316 | goto Done;\r | |
317 | }\r | |
318 | }\r | |
319 | \r | |
320 | if (!IsValidFfsFile (FvDevice->ErasePolarity, FfsHeader)) {\r | |
321 | //\r | |
322 | // File system is corrupted\r | |
323 | //\r | |
324 | Status = EFI_VOLUME_CORRUPTED;\r | |
325 | goto Done;\r | |
326 | }\r | |
327 | \r | |
328 | //\r | |
329 | // Size[3] is a three byte array, read 4 bytes and throw one away\r | |
330 | //\r | |
331 | FileLength = *(UINT32 *)&FfsHeader->Size[0] & 0x00FFFFFF;\r | |
332 | \r | |
333 | FileState = GetFileState (FvDevice->ErasePolarity, FfsHeader);\r | |
022c6d45 | 334 | \r |
28a00297 | 335 | //\r |
336 | // check for non-deleted file\r | |
337 | //\r | |
338 | if (FileState != EFI_FILE_DELETED) {\r | |
339 | //\r | |
340 | // Create a FFS list entry for each non-deleted file\r | |
341 | //\r | |
9c4ac31c | 342 | FfsFileEntry = AllocateZeroPool (sizeof (FFS_FILE_LIST_ENTRY));\r |
28a00297 | 343 | if (FfsFileEntry == NULL) {\r |
344 | Status = EFI_OUT_OF_RESOURCES;\r | |
345 | goto Done;\r | |
346 | }\r | |
022c6d45 | 347 | \r |
28a00297 | 348 | FfsFileEntry->FfsHeader = FfsHeader;\r |
349 | InsertTailList (&FvDevice->FfsFileListHeader, &FfsFileEntry->Link);\r | |
350 | }\r | |
351 | \r | |
352 | FfsHeader = (EFI_FFS_FILE_HEADER *)(((UINT8 *)FfsHeader) + FileLength);\r | |
022c6d45 | 353 | \r |
28a00297 | 354 | //\r |
355 | // Adjust pointer to the next 8-byte aligned boundry.\r | |
356 | //\r | |
357 | FfsHeader = (EFI_FFS_FILE_HEADER *)(((UINTN)FfsHeader + 7) & ~0x07);\r | |
022c6d45 | 358 | \r |
28a00297 | 359 | }\r |
360 | \r | |
361 | Done:\r | |
362 | if (EFI_ERROR (Status)) {\r | |
363 | FreeFvDeviceResource (FvDevice);\r | |
364 | }\r | |
365 | \r | |
366 | return Status;\r | |
367 | }\r | |
368 | \r | |
369 | \r | |
162ed594 | 370 | \r |
371 | /**\r | |
372 | This notification function is invoked when an instance of the\r | |
373 | EFI_FW_VOLUME_BLOCK_PROTOCOL is produced. It layers an instance of the\r | |
374 | EFI_FIRMWARE_VOLUME2_PROTOCOL on the same handle. This is the function where\r | |
375 | the actual initialization of the EFI_FIRMWARE_VOLUME2_PROTOCOL is done.\r | |
376 | \r | |
022c6d45 | 377 | @param Event The event that occured\r |
162ed594 | 378 | @param Context For EFI compatiblity. Not used.\r |
379 | \r | |
380 | **/\r | |
28a00297 | 381 | VOID\r |
382 | EFIAPI\r | |
383 | NotifyFwVolBlock (\r | |
384 | IN EFI_EVENT Event,\r | |
385 | IN VOID *Context\r | |
386 | )\r | |
28a00297 | 387 | {\r |
388 | EFI_HANDLE Handle;\r | |
389 | EFI_STATUS Status;\r | |
390 | UINTN BufferSize;\r | |
391 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
0c2b5da8 | 392 | EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r |
28a00297 | 393 | FV_DEVICE *FvDevice;\r |
394 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
395 | //\r | |
396 | // Examine all new handles\r | |
397 | //\r | |
398 | for (;;) {\r | |
399 | //\r | |
400 | // Get the next handle\r | |
401 | //\r | |
402 | BufferSize = sizeof (Handle);\r | |
403 | Status = CoreLocateHandle (\r | |
404 | ByRegisterNotify,\r | |
405 | NULL,\r | |
406 | gEfiFwVolBlockNotifyReg,\r | |
407 | &BufferSize,\r | |
408 | &Handle\r | |
409 | );\r | |
410 | \r | |
411 | //\r | |
412 | // If not found, we're done\r | |
413 | //\r | |
414 | if (EFI_NOT_FOUND == Status) {\r | |
415 | break;\r | |
416 | }\r | |
417 | \r | |
418 | if (EFI_ERROR (Status)) {\r | |
419 | continue;\r | |
420 | }\r | |
022c6d45 | 421 | \r |
28a00297 | 422 | //\r |
423 | // Get the FirmwareVolumeBlock protocol on that handle\r | |
424 | //\r | |
022c6d45 | 425 | Status = CoreHandleProtocol (Handle, &gEfiFirmwareVolumeBlockProtocolGuid, (VOID **)&Fvb);\r |
28a00297 | 426 | ASSERT_EFI_ERROR (Status);\r |
022c6d45 | 427 | \r |
28a00297 | 428 | \r |
429 | //\r | |
430 | // Make sure the Fv Header is O.K.\r | |
431 | //\r | |
432 | Status = GetFwVolHeader (Fvb, &FwVolHeader);\r | |
433 | if (EFI_ERROR (Status)) {\r | |
434 | return;\r | |
435 | }\r | |
436 | \r | |
437 | if (!VerifyFvHeaderChecksum (FwVolHeader)) {\r | |
438 | CoreFreePool (FwVolHeader);\r | |
439 | continue;\r | |
440 | }\r | |
441 | \r | |
442 | \r | |
443 | //\r | |
444 | // Check to see that the file system is indeed formatted in a way we can\r | |
445 | // understand it...\r | |
446 | //\r | |
9767823f | 447 | if (!CompareGuid (&FwVolHeader->FileSystemGuid, &gEfiFirmwareFileSystem2Guid)) {\r |
28a00297 | 448 | continue;\r |
449 | }\r | |
450 | \r | |
451 | //\r | |
452 | // Check if there is an FV protocol already installed in that handle\r | |
453 | //\r | |
0c2b5da8 | 454 | Status = CoreHandleProtocol (Handle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&Fv);\r |
28a00297 | 455 | if (!EFI_ERROR (Status)) {\r |
456 | //\r | |
457 | // Update Fv to use a new Fvb\r | |
458 | //\r | |
50d7ebad | 459 | FvDevice = BASE_CR (Fv, FV_DEVICE, Fv);\r |
0c2b5da8 | 460 | if (FvDevice->Signature == FV2_DEVICE_SIGNATURE) {\r |
28a00297 | 461 | //\r |
462 | // Only write into our device structure if it's our device structure\r | |
463 | //\r | |
464 | FvDevice->Fvb = Fvb;\r | |
465 | }\r | |
466 | \r | |
467 | } else {\r | |
468 | //\r | |
469 | // No FwVol protocol on the handle so create a new one\r | |
470 | //\r | |
9c4ac31c | 471 | FvDevice = AllocateCopyPool (sizeof (FV_DEVICE), &mFvDevice);\r |
28a00297 | 472 | if (FvDevice == NULL) {\r |
473 | return;\r | |
474 | }\r | |
022c6d45 | 475 | \r |
e94a9ff7 | 476 | FvDevice->Fvb = Fvb;\r |
477 | FvDevice->Handle = Handle;\r | |
478 | FvDevice->FwVolHeader = FwVolHeader;\r | |
28a00297 | 479 | FvDevice->Fv.ParentHandle = Fvb->ParentHandle;\r |
022c6d45 | 480 | \r |
28a00297 | 481 | //\r |
482 | // Install an New FV protocol on the existing handle\r | |
483 | //\r | |
484 | Status = CoreInstallProtocolInterface (\r | |
485 | &Handle,\r | |
0c2b5da8 | 486 | &gEfiFirmwareVolume2ProtocolGuid,\r |
28a00297 | 487 | EFI_NATIVE_INTERFACE,\r |
488 | &FvDevice->Fv\r | |
489 | );\r | |
490 | ASSERT_EFI_ERROR (Status);\r | |
491 | }\r | |
492 | }\r | |
022c6d45 | 493 | \r |
28a00297 | 494 | return;\r |
495 | }\r | |
496 | \r | |
497 | \r | |
162ed594 | 498 | \r |
499 | /**\r | |
13492369 | 500 | This routine is the driver initialization entry point. It registers\r |
501 | a notification function. This notification function are responsible\r | |
502 | for building the FV stack dynamically.\r | |
162ed594 | 503 | \r |
022c6d45 | 504 | @param ImageHandle The image handle.\r |
505 | @param SystemTable The system table.\r | |
162ed594 | 506 | \r |
507 | @retval EFI_SUCCESS Function successfully returned.\r | |
508 | \r | |
509 | **/\r | |
28a00297 | 510 | EFI_STATUS\r |
511 | EFIAPI\r | |
512 | FwVolDriverInit (\r | |
513 | IN EFI_HANDLE ImageHandle,\r | |
514 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
515 | )\r | |
28a00297 | 516 | {\r |
7899b797 | 517 | gEfiFwVolBlockEvent = EfiCreateProtocolNotifyEvent (\r |
28a00297 | 518 | &gEfiFirmwareVolumeBlockProtocolGuid,\r |
519 | TPL_CALLBACK,\r | |
520 | NotifyFwVolBlock,\r | |
521 | NULL,\r | |
7899b797 | 522 | &gEfiFwVolBlockNotifyReg\r |
28a00297 | 523 | );\r |
524 | return EFI_SUCCESS;\r | |
525 | }\r | |
526 | \r | |
162ed594 | 527 | \r |