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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2005 - 2008, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Fvb.c \r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Firmware Volume Block Protocol Runtime Abstraction\r | |
19 | \r | |
20 | mFvbEntry is an array of Handle Fvb pairs. The Fvb Lib Instance matches the \r | |
21 | index in the mFvbEntry array. This should be the same sequence as the FVB's\r | |
22 | were described in the HOB. We have to remember the handle so we can tell if \r | |
23 | the protocol has been reinstalled and it needs updateing.\r | |
24 | \r | |
25 | If you are using any of these lib functions.you must first call FvbInitialize ().\r | |
26 | \r | |
27 | Key:\r | |
28 | FVB - Firmware Volume Block\r | |
29 | \r | |
30 | --*/\r | |
31 | \r | |
32 | #include "Tiano.h"\r | |
33 | #include "EfiRuntimeLib.h"\r | |
34 | #include EFI_PROTOCOL_DEFINITION (FirmwareVolumeBlock)\r | |
35 | #include EFI_PROTOCOL_DEFINITION (FvbExtension)\r | |
36 | \r | |
37 | //\r | |
38 | // Lib will ASSERT if more FVB devices than this are added to the system.\r | |
39 | //\r | |
40 | UINTN mFvbCount;\r | |
41 | VOID *mFvbRegistration;\r | |
42 | VOID *mFvbExtRegistration;\r | |
43 | static EFI_EVENT mEfiFvbVirtualNotifyEvent;\r | |
44 | BOOLEAN gEfiFvbInitialized = FALSE;\r | |
45 | EFI_EVENT mFvbEvent;\r | |
46 | \r | |
47 | BOOLEAN\r | |
48 | IsMemoryRuntime (\r | |
49 | IN VOID *Address\r | |
50 | )\r | |
51 | /*++\r | |
52 | \r | |
53 | Routine Description:\r | |
54 | Check whether an address is runtime memory or not.\r | |
55 | \r | |
56 | Arguments:\r | |
57 | \r | |
58 | Address - The Address being checked.\r | |
59 | \r | |
60 | Returns: \r | |
61 | TRUE - The address is runtime memory.\r | |
62 | FALSE - The address is not runtime memory.\r | |
63 | \r | |
64 | --*/\r | |
65 | {\r | |
66 | EFI_STATUS Status;\r | |
67 | UINT8 TmpMemoryMap[1];\r | |
68 | UINTN MapKey;\r | |
69 | UINTN DescriptorSize;\r | |
70 | UINT32 DescriptorVersion;\r | |
71 | UINTN MemoryMapSize;\r | |
72 | EFI_MEMORY_DESCRIPTOR *MemoryMap;\r | |
73 | EFI_MEMORY_DESCRIPTOR *MemoryMapPtr;\r | |
74 | BOOLEAN IsRuntime;\r | |
75 | UINTN Index;\r | |
76 | \r | |
77 | IsRuntime = FALSE;\r | |
78 | \r | |
79 | //\r | |
80 | // Get System MemoryMapSize\r | |
81 | //\r | |
82 | MemoryMapSize = 1;\r | |
83 | Status = gBS->GetMemoryMap (\r | |
84 | &MemoryMapSize,\r | |
85 | (EFI_MEMORY_DESCRIPTOR *)TmpMemoryMap,\r | |
86 | &MapKey,\r | |
87 | &DescriptorSize,\r | |
88 | &DescriptorVersion\r | |
89 | );\r | |
90 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r | |
91 | //\r | |
92 | // Enlarge space here, because we will allocate pool now.\r | |
93 | //\r | |
94 | MemoryMapSize += EFI_PAGE_SIZE;\r | |
95 | Status = gBS->AllocatePool (\r | |
96 | EfiBootServicesData,\r | |
97 | MemoryMapSize,\r | |
98 | (VOID**)&MemoryMap\r | |
99 | );\r | |
100 | ASSERT_EFI_ERROR (Status);\r | |
101 | \r | |
102 | //\r | |
103 | // Get System MemoryMap\r | |
104 | //\r | |
105 | Status = gBS->GetMemoryMap (\r | |
106 | &MemoryMapSize,\r | |
107 | MemoryMap,\r | |
108 | &MapKey,\r | |
109 | &DescriptorSize,\r | |
110 | &DescriptorVersion\r | |
111 | );\r | |
112 | ASSERT_EFI_ERROR (Status);\r | |
113 | \r | |
114 | MemoryMapPtr = MemoryMap;\r | |
115 | //\r | |
116 | // Search the request Address\r | |
117 | //\r | |
118 | for (Index = 0; Index < (MemoryMapSize / DescriptorSize); Index++) {\r | |
119 | if (((EFI_PHYSICAL_ADDRESS)(UINTN)Address >= MemoryMap->PhysicalStart) &&\r | |
120 | ((EFI_PHYSICAL_ADDRESS)(UINTN)Address < MemoryMap->PhysicalStart\r | |
121 | + LShiftU64 (MemoryMap->NumberOfPages, EFI_PAGE_SHIFT))) {\r | |
122 | //\r | |
123 | // Found it\r | |
124 | //\r | |
125 | if (MemoryMap->Attribute & EFI_MEMORY_RUNTIME) {\r | |
126 | IsRuntime = TRUE;\r | |
127 | }\r | |
128 | break;\r | |
129 | }\r | |
130 | //\r | |
131 | // Get next item\r | |
132 | //\r | |
133 | MemoryMap = (EFI_MEMORY_DESCRIPTOR *)((UINTN)MemoryMap + DescriptorSize);\r | |
134 | }\r | |
135 | \r | |
136 | //\r | |
137 | // Done\r | |
138 | //\r | |
139 | gBS->FreePool (MemoryMapPtr);\r | |
140 | \r | |
141 | return IsRuntime;\r | |
142 | }\r | |
143 | \r | |
144 | VOID\r | |
145 | EFIAPI\r | |
146 | FvbNotificationFunction (\r | |
147 | IN EFI_EVENT Event,\r | |
148 | IN VOID *Context\r | |
149 | )\r | |
150 | /*++\r | |
151 | \r | |
152 | Routine Description:\r | |
153 | Update mFvbEntry. Add new entry, or update existing entry if Fvb protocol is\r | |
154 | reinstalled.\r | |
155 | \r | |
156 | Arguments:\r | |
157 | \r | |
158 | Event - The Event that is being processed\r | |
159 | \r | |
160 | Context - Event Context\r | |
161 | \r | |
162 | Returns: \r | |
163 | None\r | |
164 | \r | |
165 | --*/\r | |
166 | {\r | |
167 | EFI_STATUS Status;\r | |
168 | UINTN BufferSize;\r | |
169 | EFI_HANDLE Handle;\r | |
170 | UINTN Index;\r | |
171 | UINTN UpdateIndex;\r | |
172 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
173 | EFI_FVB_EXTENSION_PROTOCOL *FvbExtension;\r | |
174 | \r | |
175 | while (TRUE) {\r | |
176 | BufferSize = sizeof (Handle);\r | |
177 | Status = gBS->LocateHandle (\r | |
178 | ByRegisterNotify,\r | |
179 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
180 | mFvbRegistration,\r | |
181 | &BufferSize,\r | |
182 | &Handle\r | |
183 | );\r | |
184 | if (EFI_ERROR (Status)) {\r | |
185 | //\r | |
186 | // Exit Path of While Loop....\r | |
187 | //\r | |
188 | break;\r | |
189 | }\r | |
190 | \r | |
191 | UpdateIndex = MAX_FVB_COUNT;\r | |
192 | for (Index = 0; Index < mFvbCount; Index++) {\r | |
193 | if (mFvbEntry[Index].Handle == Handle) {\r | |
194 | //\r | |
195 | // If the handle is already in the table just update the protocol\r | |
196 | //\r | |
197 | UpdateIndex = Index;\r | |
198 | break;\r | |
199 | }\r | |
200 | }\r | |
201 | \r | |
202 | if (UpdateIndex == MAX_FVB_COUNT) {\r | |
203 | //\r | |
204 | // Use the next free slot for a new entry\r | |
205 | //\r | |
206 | UpdateIndex = mFvbCount;\r | |
207 | }\r | |
208 | //\r | |
209 | // The array does not have enough entries\r | |
210 | //\r | |
211 | ASSERT (UpdateIndex < MAX_FVB_COUNT);\r | |
212 | \r | |
213 | //\r | |
214 | // Get the interface pointer and if it's ours, skip it.\r | |
215 | // We check Runtime here, because it has no reason to register\r | |
216 | // a boot time FVB protocol.\r | |
217 | //\r | |
218 | Status = gBS->HandleProtocol (Handle, &gEfiFirmwareVolumeBlockProtocolGuid, (VOID **) &Fvb);\r | |
219 | ASSERT_EFI_ERROR (Status);\r | |
220 | if (IsMemoryRuntime (Fvb)) {\r | |
221 | //\r | |
222 | // Increase mFvbCount if we need to add a new entry\r | |
223 | //\r | |
224 | if (UpdateIndex == mFvbCount) {\r | |
225 | mFvbCount++;\r | |
226 | }\r | |
227 | mFvbEntry[UpdateIndex].Handle = Handle;\r | |
228 | mFvbEntry[UpdateIndex].Fvb = Fvb;\r | |
229 | mFvbEntry[UpdateIndex].FvbExtension = NULL;\r | |
230 | \r | |
231 | Status = gBS->HandleProtocol (Handle, &gEfiFvbExtensionProtocolGuid, (VOID **) &FvbExtension);\r | |
232 | if ((Status == EFI_SUCCESS) && IsMemoryRuntime (FvbExtension)) {\r | |
233 | mFvbEntry[UpdateIndex].FvbExtension = FvbExtension;\r | |
234 | }\r | |
235 | }\r | |
236 | }\r | |
237 | }\r | |
238 | \r | |
239 | EFI_STATUS\r | |
240 | EfiFvbInitialize (\r | |
241 | VOID\r | |
242 | )\r | |
243 | /*++\r | |
244 | \r | |
245 | Routine Description:\r | |
246 | Initialize globals and register Fvb Protocol notification function.\r | |
247 | \r | |
248 | Arguments:\r | |
249 | None \r | |
250 | \r | |
251 | Returns: \r | |
252 | EFI_SUCCESS - Fvb is successfully initialized\r | |
253 | others - Fail to initialize\r | |
254 | \r | |
255 | --*/\r | |
256 | {\r | |
257 | UINTN Status;\r | |
258 | mFvbCount = 0;\r | |
259 | \r | |
260 | Status = gBS->AllocatePool (\r | |
261 | EfiRuntimeServicesData,\r | |
262 | (UINTN) sizeof (FVB_ENTRY) * MAX_FVB_COUNT,\r | |
263 | (VOID *) &mFvbEntry\r | |
264 | );\r | |
265 | \r | |
266 | if (EFI_ERROR (Status)) {\r | |
267 | return Status;\r | |
268 | }\r | |
269 | \r | |
270 | EfiZeroMem (mFvbEntry, sizeof (FVB_ENTRY) * MAX_FVB_COUNT);\r | |
271 | \r | |
272 | mFvbEvent = RtEfiLibCreateProtocolNotifyEvent (\r | |
273 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
274 | EFI_TPL_CALLBACK,\r | |
275 | FvbNotificationFunction,\r | |
276 | NULL,\r | |
277 | &mFvbRegistration\r | |
278 | );\r | |
279 | \r | |
280 | //\r | |
281 | // Register SetVirtualAddressMap () notify function\r | |
282 | //\r | |
283 | // Status = gBS->CreateEvent (\r | |
284 | // EFI_EVENT_SIGNAL_VIRTUAL_ADDRESS_CHANGE,\r | |
285 | // EFI_TPL_NOTIFY,\r | |
286 | // EfiRuntimeLibFvbVirtualNotifyEvent,\r | |
287 | // NULL,\r | |
288 | // &mEfiFvbVirtualNotifyEvent\r | |
289 | // );\r | |
290 | // ASSERT_EFI_ERROR (Status);\r | |
291 | //\r | |
292 | gEfiFvbInitialized = TRUE;\r | |
293 | \r | |
294 | return EFI_SUCCESS;\r | |
295 | }\r | |
296 | \r | |
297 | EFI_STATUS\r | |
298 | EfiFvbShutdown (\r | |
299 | VOID\r | |
300 | )\r | |
301 | /*++\r | |
302 | \r | |
303 | Routine Description:\r | |
304 | Release resources allocated in EfiFvbInitialize.\r | |
305 | \r | |
306 | Arguments:\r | |
307 | None \r | |
308 | \r | |
309 | Returns: \r | |
310 | EFI_SUCCESS\r | |
311 | \r | |
312 | --*/\r | |
313 | {\r | |
314 | gBS->FreePool ((VOID *) mFvbEntry);\r | |
315 | \r | |
316 | gBS->CloseEvent (mFvbEvent);\r | |
317 | \r | |
318 | gEfiFvbInitialized = FALSE;\r | |
319 | \r | |
320 | return EFI_SUCCESS;\r | |
321 | }\r | |
322 | \r | |
323 | //\r | |
324 | // The following functions wrap Fvb protocol in the Runtime Lib functions.\r | |
325 | // The Instance translates into Fvb instance. The Fvb order defined by HOBs and\r | |
326 | // thus the sequence of FVB protocol addition define Instance.\r | |
327 | //\r | |
328 | // EfiFvbInitialize () must be called before any of the following functions\r | |
329 | // must be called.\r | |
330 | //\r | |
331 | \r | |
332 | EFI_STATUS\r | |
333 | EfiFvbReadBlock (\r | |
334 | IN UINTN Instance,\r | |
335 | IN EFI_LBA Lba,\r | |
336 | IN UINTN Offset,\r | |
337 | IN OUT UINTN *NumBytes,\r | |
338 | IN UINT8 *Buffer\r | |
339 | )\r | |
340 | /*++\r | |
341 | \r | |
342 | Routine Description:\r | |
343 | Reads specified number of bytes into a buffer from the specified block\r | |
344 | \r | |
345 | Arguments:\r | |
346 | Instance - The FV instance to be read from\r | |
347 | Lba - The logical block address to be read from\r | |
348 | Offset - Offset into the block at which to begin reading\r | |
349 | NumBytes - Pointer that on input contains the total size of\r | |
350 | the buffer. On output, it contains the total number\r | |
351 | of bytes read\r | |
352 | Buffer - Pointer to a caller allocated buffer that will be\r | |
353 | used to hold the data read\r | |
354 | \r | |
355 | Returns: \r | |
356 | \r | |
357 | Status code\r | |
358 | \r | |
359 | EFI_INVALID_PARAMETER - invalid parameter\r | |
360 | \r | |
361 | --*/\r | |
362 | {\r | |
363 | if (Instance >= mFvbCount) {\r | |
364 | return EFI_INVALID_PARAMETER;\r | |
365 | }\r | |
366 | \r | |
367 | return mFvbEntry[Instance].Fvb->Read (mFvbEntry[Instance].Fvb, Lba, Offset, NumBytes, Buffer);\r | |
368 | }\r | |
369 | \r | |
370 | EFI_STATUS\r | |
371 | EfiFvbWriteBlock (\r | |
372 | IN UINTN Instance,\r | |
373 | IN EFI_LBA Lba,\r | |
374 | IN UINTN Offset,\r | |
375 | IN OUT UINTN *NumBytes,\r | |
376 | IN UINT8 *Buffer\r | |
377 | )\r | |
378 | /*++\r | |
379 | \r | |
380 | Routine Description:\r | |
381 | Writes specified number of bytes from the input buffer to the block\r | |
382 | \r | |
383 | Arguments:\r | |
384 | Instance - The FV instance to be written to\r | |
385 | Lba - The starting logical block index to write to\r | |
386 | Offset - Offset into the block at which to begin writing\r | |
387 | NumBytes - Pointer that on input contains the total size of\r | |
388 | the buffer. On output, it contains the total number\r | |
389 | of bytes actually written\r | |
390 | Buffer - Pointer to a caller allocated buffer that contains\r | |
391 | the source for the write\r | |
392 | \r | |
393 | Returns: \r | |
394 | \r | |
395 | Status code\r | |
396 | \r | |
397 | EFI_INVALID_PARAMETER - invalid parameter\r | |
398 | \r | |
399 | --*/\r | |
400 | {\r | |
401 | if (Instance >= mFvbCount) {\r | |
402 | return EFI_INVALID_PARAMETER;\r | |
403 | }\r | |
404 | \r | |
405 | return mFvbEntry[Instance].Fvb->Write (mFvbEntry[Instance].Fvb, Lba, Offset, NumBytes, Buffer);\r | |
406 | }\r | |
407 | \r | |
408 | EFI_STATUS\r | |
409 | EfiFvbEraseBlock (\r | |
410 | IN UINTN Instance,\r | |
411 | IN EFI_LBA Lba\r | |
412 | )\r | |
413 | /*++\r | |
414 | \r | |
415 | Routine Description:\r | |
416 | Erases and initializes a firmware volume block\r | |
417 | \r | |
418 | Arguments:\r | |
419 | Instance - The FV instance to be erased\r | |
420 | Lba - The logical block index to be erased\r | |
421 | \r | |
422 | Returns: \r | |
423 | \r | |
424 | Status code\r | |
425 | \r | |
426 | EFI_INVALID_PARAMETER - invalid parameter\r | |
427 | \r | |
428 | --*/\r | |
429 | {\r | |
430 | if (Instance >= mFvbCount) {\r | |
431 | return EFI_INVALID_PARAMETER;\r | |
432 | }\r | |
433 | \r | |
434 | return mFvbEntry[Instance].Fvb->EraseBlocks (mFvbEntry[Instance].Fvb, Lba, -1);\r | |
435 | }\r | |
436 | \r | |
437 | EFI_STATUS\r | |
438 | EfiFvbGetVolumeAttributes (\r | |
439 | IN UINTN Instance,\r | |
440 | OUT EFI_FVB_ATTRIBUTES *Attributes\r | |
441 | )\r | |
442 | /*++\r | |
443 | \r | |
444 | Routine Description:\r | |
445 | Retrieves attributes, insures positive polarity of attribute bits, returns\r | |
446 | resulting attributes in output parameter\r | |
447 | \r | |
448 | Arguments:\r | |
449 | Instance - The FV instance whose attributes is going to be \r | |
450 | returned\r | |
451 | Attributes - Output buffer which contains attributes\r | |
452 | \r | |
453 | Returns: \r | |
454 | Status code\r | |
455 | \r | |
456 | EFI_INVALID_PARAMETER - invalid parameter\r | |
457 | \r | |
458 | --*/\r | |
459 | {\r | |
460 | if (Instance >= mFvbCount) {\r | |
461 | return EFI_INVALID_PARAMETER;\r | |
462 | }\r | |
463 | \r | |
464 | return mFvbEntry[Instance].Fvb->GetVolumeAttributes (mFvbEntry[Instance].Fvb, Attributes);\r | |
465 | }\r | |
466 | \r | |
467 | EFI_STATUS\r | |
468 | EfiFvbSetVolumeAttributes (\r | |
469 | IN UINTN Instance,\r | |
470 | IN EFI_FVB_ATTRIBUTES Attributes\r | |
471 | )\r | |
472 | /*++\r | |
473 | \r | |
474 | Routine Description:\r | |
475 | Modifies the current settings of the firmware volume according to the \r | |
476 | input parameter.\r | |
477 | \r | |
478 | Arguments:\r | |
479 | Instance - The FV instance whose attributes is going to be \r | |
480 | modified\r | |
481 | Attributes - It is a pointer to EFI_FVB_ATTRIBUTES \r | |
482 | containing the desired firmware volume settings.\r | |
483 | \r | |
484 | Returns: \r | |
485 | Status code\r | |
486 | \r | |
487 | EFI_INVALID_PARAMETER - invalid parameter\r | |
488 | \r | |
489 | --*/\r | |
490 | {\r | |
491 | if (Instance >= mFvbCount) {\r | |
492 | return EFI_INVALID_PARAMETER;\r | |
493 | }\r | |
494 | \r | |
495 | return mFvbEntry[Instance].Fvb->SetVolumeAttributes (mFvbEntry[Instance].Fvb, &Attributes);\r | |
496 | }\r | |
497 | \r | |
498 | EFI_STATUS\r | |
499 | EfiFvbGetPhysicalAddress (\r | |
500 | IN UINTN Instance,\r | |
501 | OUT EFI_PHYSICAL_ADDRESS *BaseAddress\r | |
502 | )\r | |
503 | /*++\r | |
504 | \r | |
505 | Routine Description:\r | |
506 | Retrieves the physical address of a memory mapped FV\r | |
507 | \r | |
508 | Arguments:\r | |
509 | Instance - The FV instance whose base address is going to be\r | |
510 | returned\r | |
511 | BaseAddress - Pointer to a caller allocated EFI_PHYSICAL_ADDRESS \r | |
512 | that on successful return, contains the base address\r | |
513 | of the firmware volume. \r | |
514 | \r | |
515 | Returns: \r | |
516 | \r | |
517 | Status code\r | |
518 | \r | |
519 | EFI_INVALID_PARAMETER - invalid parameter\r | |
520 | \r | |
521 | --*/\r | |
522 | {\r | |
523 | if (Instance >= mFvbCount) {\r | |
524 | return EFI_INVALID_PARAMETER;\r | |
525 | }\r | |
526 | \r | |
527 | return mFvbEntry[Instance].Fvb->GetPhysicalAddress (mFvbEntry[Instance].Fvb, BaseAddress);\r | |
528 | }\r | |
529 | \r | |
530 | EFI_STATUS\r | |
531 | EfiFvbGetBlockSize (\r | |
532 | IN UINTN Instance,\r | |
533 | IN EFI_LBA Lba,\r | |
534 | OUT UINTN *BlockSize,\r | |
535 | OUT UINTN *NumOfBlocks\r | |
536 | )\r | |
537 | /*++\r | |
538 | \r | |
539 | Routine Description:\r | |
540 | Retrieve the size of a logical block\r | |
541 | \r | |
542 | Arguments:\r | |
543 | Instance - The FV instance whose block size is going to be\r | |
544 | returned\r | |
545 | Lba - Indicates which block to return the size for.\r | |
546 | BlockSize - A pointer to a caller allocated UINTN in which\r | |
547 | the size of the block is returned\r | |
548 | NumOfBlocks - a pointer to a caller allocated UINTN in which the\r | |
549 | number of consecutive blocks starting with Lba is\r | |
550 | returned. All blocks in this range have a size of\r | |
551 | BlockSize\r | |
552 | \r | |
553 | Returns: \r | |
554 | EFI_SUCCESS - The firmware volume was read successfully and \r | |
555 | contents are in Buffer\r | |
556 | \r | |
557 | EFI_INVALID_PARAMETER - invalid parameter\r | |
558 | \r | |
559 | --*/\r | |
560 | {\r | |
561 | if (Instance >= mFvbCount) {\r | |
562 | return EFI_INVALID_PARAMETER;\r | |
563 | }\r | |
564 | \r | |
565 | return mFvbEntry[Instance].Fvb->GetBlockSize (mFvbEntry[Instance].Fvb, Lba, BlockSize, NumOfBlocks);\r | |
566 | }\r | |
567 | \r | |
568 | EFI_STATUS\r | |
569 | EfiFvbEraseCustomBlockRange (\r | |
570 | IN UINTN Instance,\r | |
571 | IN EFI_LBA StartLba,\r | |
572 | IN UINTN OffsetStartLba,\r | |
573 | IN EFI_LBA LastLba,\r | |
574 | IN UINTN OffsetLastLba\r | |
575 | )\r | |
576 | /*++\r | |
577 | \r | |
578 | Routine Description:\r | |
579 | Erases and initializes a specified range of a firmware volume\r | |
580 | \r | |
581 | Arguments:\r | |
582 | Instance - The FV instance to be erased\r | |
583 | StartLba - The starting logical block index to be erased\r | |
584 | OffsetStartLba - Offset into the starting block at which to \r | |
585 | begin erasing\r | |
586 | LastLba - The last logical block index to be erased\r | |
587 | OffsetLastLba - Offset into the last block at which to end erasing\r | |
588 | \r | |
589 | Returns: \r | |
590 | \r | |
591 | Status code\r | |
592 | \r | |
593 | EFI_INVALID_PARAMETER - invalid parameter\r | |
594 | \r | |
595 | EFI_UNSUPPORTED - not support\r | |
596 | \r | |
597 | --*/\r | |
598 | {\r | |
599 | if (Instance >= mFvbCount) {\r | |
600 | return EFI_INVALID_PARAMETER;\r | |
601 | }\r | |
602 | \r | |
603 | if (!(mFvbEntry[Instance].FvbExtension)) {\r | |
604 | return EFI_UNSUPPORTED;\r | |
605 | }\r | |
606 | \r | |
607 | if (!(mFvbEntry[Instance].FvbExtension->EraseFvbCustomBlock)) {\r | |
608 | return EFI_UNSUPPORTED;\r | |
609 | }\r | |
610 | \r | |
611 | return mFvbEntry[Instance].FvbExtension->EraseFvbCustomBlock (\r | |
612 | mFvbEntry[Instance].FvbExtension,\r | |
613 | StartLba,\r | |
614 | OffsetStartLba,\r | |
615 | LastLba,\r | |
616 | OffsetLastLba\r | |
617 | );\r | |
618 | }\r |