a190687a |
1 | /**@file\r |
2 | \r |
3 | Firmware Volume Block Protocol Runtime Abstraction\r |
4 | \r |
5 | mFvbEntry is an array of Handle Fvb pairs. The Fvb Lib Instance matches the\r |
6 | index in the mFvbEntry array. This should be the same sequence as the FVB's\r |
7 | were described in the HOB. We have to remember the handle so we can tell if\r |
8 | the protocol has been reinstalled and it needs updateing.\r |
9 | \r |
10 | If you are using any of these lib functions.you must first call FvbInitialize ().\r |
11 | \r |
12 | Copyright (c) 2006, Intel Corporation\r |
13 | All rights reserved. This program and the accompanying materials\r |
14 | are licensed and made available under the terms and conditions of the BSD License\r |
15 | which accompanies this distribution. The full text of the license may be found at\r |
16 | http://opensource.org/licenses/bsd-license.php\r |
17 | \r |
18 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
19 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
20 | \r |
21 | **/\r |
22 | \r |
23 | \r |
24 | #include "Fvb.h"\r |
25 | \r |
26 | //\r |
27 | // Event for Exit Boot Services Callback\r |
28 | //\r |
29 | STATIC EFI_EVENT mExitBootServicesEvent = NULL;\r |
30 | \r |
31 | //\r |
32 | // Lib will ASSERT if more FVB devices than this are added to the system.\r |
33 | //\r |
34 | STATIC FVB_ENTRY *mFvbEntry;\r |
35 | STATIC EFI_EVENT mFvbRegistration;\r |
36 | STATIC BOOLEAN mEfiFvbInitialized = FALSE;\r |
37 | STATIC UINTN mFvbCount;\r |
38 | \r |
39 | /**\r |
40 | Check whether an address is runtime memory or not.\r |
41 | \r |
42 | @param Address The Address being checked.\r |
43 | \r |
44 | @retval TRUE The address is runtime memory.\r |
45 | @retval FALSE The address is not runtime memory.\r |
46 | **/\r |
47 | BOOLEAN\r |
48 | IsRuntimeMemory (\r |
49 | IN VOID *Address\r |
50 | )\r |
51 | {\r |
52 | EFI_STATUS Status;\r |
53 | UINT8 TmpMemoryMap[1];\r |
54 | UINTN MapKey;\r |
55 | UINTN DescriptorSize;\r |
56 | UINT32 DescriptorVersion;\r |
57 | UINTN MemoryMapSize;\r |
58 | EFI_MEMORY_DESCRIPTOR *MemoryMap;\r |
59 | EFI_MEMORY_DESCRIPTOR *MemoryMapPtr;\r |
60 | BOOLEAN IsRuntime;\r |
61 | UINTN Index;\r |
62 | \r |
63 | IsRuntime = FALSE;\r |
64 | \r |
65 | //\r |
66 | // Get System MemoryMapSize\r |
67 | //\r |
68 | MemoryMapSize = 1;\r |
69 | Status = gBS->GetMemoryMap (\r |
70 | &MemoryMapSize,\r |
71 | (EFI_MEMORY_DESCRIPTOR *)TmpMemoryMap,\r |
72 | &MapKey,\r |
73 | &DescriptorSize,\r |
74 | &DescriptorVersion\r |
75 | );\r |
76 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r |
77 | //\r |
78 | // Enlarge space here, because we will allocate pool now.\r |
79 | //\r |
80 | MemoryMapSize += EFI_PAGE_SIZE;\r |
81 | Status = gBS->AllocatePool (\r |
82 | EfiBootServicesData,\r |
83 | MemoryMapSize,\r |
84 | (VOID**)&MemoryMap\r |
85 | );\r |
86 | ASSERT_EFI_ERROR (Status);\r |
87 | \r |
88 | //\r |
89 | // Get System MemoryMap\r |
90 | //\r |
91 | Status = gBS->GetMemoryMap (\r |
92 | &MemoryMapSize,\r |
93 | MemoryMap,\r |
94 | &MapKey,\r |
95 | &DescriptorSize,\r |
96 | &DescriptorVersion\r |
97 | );\r |
98 | ASSERT_EFI_ERROR (Status);\r |
99 | \r |
100 | MemoryMapPtr = MemoryMap;\r |
101 | //\r |
102 | // Search the request Address\r |
103 | //\r |
104 | for (Index = 0; Index < (MemoryMapSize / DescriptorSize); Index++) {\r |
105 | if (((EFI_PHYSICAL_ADDRESS)(UINTN)Address >= MemoryMap->PhysicalStart) &&\r |
106 | ((EFI_PHYSICAL_ADDRESS)(UINTN)Address < MemoryMap->PhysicalStart\r |
107 | + LShiftU64 (MemoryMap->NumberOfPages, EFI_PAGE_SHIFT))) {\r |
108 | //\r |
109 | // Found it\r |
110 | //\r |
111 | if (MemoryMap->Attribute & EFI_MEMORY_RUNTIME) {\r |
112 | IsRuntime = TRUE;\r |
113 | }\r |
114 | break;\r |
115 | }\r |
116 | //\r |
117 | // Get next item\r |
118 | //\r |
119 | MemoryMap = (EFI_MEMORY_DESCRIPTOR *)((UINTN)MemoryMap + DescriptorSize);\r |
120 | }\r |
121 | \r |
122 | //\r |
123 | // Done\r |
124 | //\r |
125 | gBS->FreePool (MemoryMapPtr);\r |
126 | \r |
127 | return IsRuntime;\r |
128 | }\r |
129 | \r |
130 | /**\r |
131 | Update mFvbEntry. Add new entry, or update existing entry if Fvb protocol is\r |
132 | reinstalled.\r |
133 | \r |
134 | @param Event The Event that is being processed\r |
135 | @param Context Event Context\r |
136 | \r |
137 | **/\r |
138 | STATIC\r |
139 | VOID\r |
140 | EFIAPI\r |
141 | FvbNotificationEvent (\r |
142 | IN EFI_EVENT Event,\r |
143 | IN VOID *Context\r |
144 | )\r |
145 | {\r |
146 | EFI_STATUS Status;\r |
147 | UINTN BufferSize;\r |
148 | EFI_HANDLE Handle;\r |
149 | UINTN Index;\r |
150 | UINTN UpdateIndex;\r |
151 | \r |
152 | while (TRUE) {\r |
153 | BufferSize = sizeof (Handle);\r |
154 | Status = gBS->LocateHandle (\r |
155 | ByRegisterNotify,\r |
156 | &gEfiFirmwareVolumeBlockProtocolGuid,\r |
157 | mFvbRegistration,\r |
158 | &BufferSize,\r |
159 | &Handle\r |
160 | );\r |
161 | if (EFI_ERROR (Status)) {\r |
162 | //\r |
163 | // Exit Path of While Loop....\r |
164 | //\r |
165 | break;\r |
166 | }\r |
167 | \r |
168 | UpdateIndex = MAX_FVB_COUNT;\r |
169 | for (Index = 0; Index < mFvbCount; Index++) {\r |
170 | if (mFvbEntry[Index].Handle == Handle) {\r |
171 | //\r |
172 | // If the handle is already in the table just update the protocol\r |
173 | //\r |
174 | UpdateIndex = Index;\r |
175 | break;\r |
176 | }\r |
177 | }\r |
178 | \r |
179 | if (UpdateIndex == MAX_FVB_COUNT) {\r |
180 | //\r |
181 | // Use the next free slot for a new entry\r |
182 | //\r |
183 | UpdateIndex = mFvbCount++;\r |
184 | //\r |
185 | // Check the UpdateIndex whether exceed the maximum value.\r |
186 | //\r |
187 | ASSERT (UpdateIndex < MAX_FVB_COUNT);\r |
188 | mFvbEntry[UpdateIndex].Handle = Handle;\r |
189 | }\r |
190 | //\r |
191 | // The array does not have enough entries\r |
192 | //\r |
193 | ASSERT (UpdateIndex < MAX_FVB_COUNT);\r |
194 | \r |
195 | //\r |
196 | // Get the interface pointer and if it's ours, skip it\r |
197 | //\r |
198 | Status = gBS->HandleProtocol (\r |
199 | Handle,\r |
200 | &gEfiFirmwareVolumeBlockProtocolGuid,\r |
201 | (VOID **) &mFvbEntry[UpdateIndex].Fvb\r |
202 | );\r |
203 | ASSERT_EFI_ERROR (Status);\r |
204 | \r |
205 | Status = gBS->HandleProtocol (\r |
206 | Handle,\r |
207 | &gEfiFvbExtensionProtocolGuid,\r |
208 | (VOID **) &mFvbEntry[UpdateIndex].FvbExtension\r |
209 | );\r |
210 | if (Status != EFI_SUCCESS) {\r |
211 | mFvbEntry[UpdateIndex].FvbExtension = NULL;\r |
212 | }\r |
213 | \r |
214 | //\r |
215 | // Check the FVB can be accessed in RUNTIME, The FVBs in FVB handle list comes\r |
216 | // from two way:\r |
217 | // 1) Dxe Core. (FVB information is transferred from FV HOB).\r |
218 | // 2) FVB driver.\r |
219 | // The FVB produced Dxe core is used for discoverying DXE driver and dispatch. These\r |
220 | // FVBs can only be accessed in boot time.\r |
221 | // FVB driver will discovery all FV in FLASH and these FVBs can be accessed in runtime.\r |
222 | // The FVB itself produced by FVB driver is allocated in runtime memory. So we can\r |
223 | // determine the what FVB can be accessed in RUNTIME by judging whether FVB itself is allocated\r |
224 | // in RUNTIME memory.\r |
225 | //\r |
226 | mFvbEntry[UpdateIndex].IsRuntimeAccess = IsRuntimeMemory (mFvbEntry[UpdateIndex].Fvb);\r |
227 | }\r |
228 | }\r |
229 | \r |
230 | /**\r |
231 | Convert all pointers in mFvbEntry after ExitBootServices.\r |
232 | \r |
233 | @param Event The Event that is being processed\r |
234 | @param Context Event Context\r |
235 | \r |
236 | **/\r |
237 | VOID\r |
238 | EFIAPI\r |
239 | FvbVirtualAddressChangeNotifyEvent (\r |
240 | IN EFI_EVENT Event,\r |
241 | IN VOID *Context\r |
242 | )\r |
243 | {\r |
244 | UINTN Index;\r |
245 | if (mFvbEntry != NULL) {\r |
246 | for (Index = 0; Index < MAX_FVB_COUNT; Index++) {\r |
247 | if (!mFvbEntry[Index].IsRuntimeAccess) {\r |
248 | continue;\r |
249 | }\r |
250 | \r |
251 | if (NULL != mFvbEntry[Index].Fvb) {\r |
252 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->GetBlockSize);\r |
253 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->GetPhysicalAddress);\r |
254 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->GetAttributes);\r |
255 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->SetAttributes);\r |
256 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->Read);\r |
257 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->Write);\r |
258 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb->EraseBlocks);\r |
259 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].Fvb);\r |
260 | }\r |
261 | \r |
262 | if (NULL != mFvbEntry[Index].FvbExtension) {\r |
263 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].FvbExtension->EraseFvbCustomBlock);\r |
264 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry[Index].FvbExtension);\r |
265 | }\r |
266 | }\r |
267 | \r |
268 | EfiConvertPointer (0x0, (VOID **) &mFvbEntry);\r |
269 | }\r |
270 | }\r |
271 | \r |
272 | /**\r |
273 | Library constructor function entry.\r |
274 | \r |
275 | @param ImageHandle The handle of image who call this libary.\r |
276 | @param SystemTable The point of System Table.\r |
277 | \r |
278 | @retval EFI_SUCESS Sucess construct this library.\r |
279 | @retval Others Fail to contruct this libary.\r |
280 | **/\r |
281 | EFI_STATUS\r |
282 | EFIAPI\r |
283 | FvbLibInitialize (\r |
284 | IN EFI_HANDLE ImageHandle,\r |
285 | IN EFI_SYSTEM_TABLE *SystemTable\r |
286 | )\r |
287 | {\r |
288 | UINTN Status;\r |
289 | mFvbCount = 0;\r |
290 | \r |
291 | Status = gBS->AllocatePool (\r |
292 | EfiRuntimeServicesData,\r |
293 | (UINTN) sizeof (FVB_ENTRY) * MAX_FVB_COUNT,\r |
294 | (VOID *) &mFvbEntry\r |
295 | );\r |
296 | \r |
297 | if (EFI_ERROR (Status)) {\r |
298 | return Status;\r |
299 | }\r |
300 | \r |
301 | ZeroMem (mFvbEntry, sizeof (FVB_ENTRY) * MAX_FVB_COUNT);\r |
302 | \r |
303 | EfiCreateProtocolNotifyEvent (\r |
304 | &gEfiFirmwareVolumeBlockProtocolGuid,\r |
305 | TPL_CALLBACK,\r |
306 | FvbNotificationEvent,\r |
307 | NULL,\r |
308 | &mFvbRegistration\r |
309 | );\r |
310 | \r |
311 | //\r |
312 | // Register SetVirtualAddressMap () notify function\r |
313 | //\r |
314 | Status = gBS->CreateEvent (\r |
315 | EVT_SIGNAL_EXIT_BOOT_SERVICES,\r |
316 | TPL_NOTIFY,\r |
317 | FvbVirtualAddressChangeNotifyEvent,\r |
318 | NULL,\r |
319 | &mExitBootServicesEvent\r |
320 | );\r |
321 | ASSERT_EFI_ERROR (Status);\r |
322 | \r |
323 | mEfiFvbInitialized = TRUE;\r |
324 | \r |
325 | return EFI_SUCCESS;\r |
326 | }\r |
327 | \r |
328 | //\r |
329 | // =============================================================================\r |
330 | // The following functions wrap Fvb protocol in the Runtime Lib functions.\r |
331 | // The Instance translates into Fvb instance. The Fvb order defined by HOBs and\r |
332 | // thus the sequence of FVB protocol addition define Instance.\r |
333 | //\r |
334 | // EfiFvbInitialize () must be called before any of the following functions\r |
335 | // must be called.\r |
336 | // =============================================================================\r |
337 | //\r |
338 | \r |
339 | /**\r |
340 | Reads specified number of bytes into a buffer from the specified block\r |
341 | \r |
342 | @param Instance The FV instance to be read from.\r |
343 | @param Lba The logical block address to be read from\r |
344 | @param Offset Offset into the block at which to begin reading\r |
345 | @param NumBytes Pointer that on input contains the total size of\r |
346 | the buffer. On output, it contains the total number\r |
347 | of bytes read\r |
348 | @param Buffer Pointer to a caller allocated buffer that will be\r |
349 | used to hold the data read\r |
350 | \r |
351 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
352 | @retval EFI_SUCESS Sucess to Read block\r |
353 | @retval Others Fail to read block\r |
354 | **/\r |
355 | EFI_STATUS\r |
356 | EfiFvbReadBlock (\r |
357 | IN UINTN Instance,\r |
358 | IN EFI_LBA Lba,\r |
359 | IN UINTN Offset,\r |
360 | IN OUT UINTN *NumBytes,\r |
361 | IN UINT8 *Buffer\r |
362 | )\r |
363 | {\r |
364 | if (Instance >= mFvbCount) {\r |
365 | return EFI_INVALID_PARAMETER;\r |
366 | }\r |
367 | \r |
368 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
369 | return EFI_INVALID_PARAMETER;\r |
370 | }\r |
371 | \r |
372 | return mFvbEntry[Instance].Fvb->Read (mFvbEntry[Instance].Fvb, Lba, Offset, NumBytes, Buffer);\r |
373 | }\r |
374 | \r |
375 | /**\r |
376 | Writes specified number of bytes from the input buffer to the block\r |
377 | \r |
378 | @param Instance The FV instance to be written to\r |
379 | @param Lba The starting logical block index to write to\r |
380 | @param Offset Offset into the block at which to begin writing\r |
381 | @param NumBytes Pointer that on input contains the total size of\r |
382 | the buffer. On output, it contains the total number\r |
383 | of bytes actually written\r |
384 | @param Buffer Pointer to a caller allocated buffer that contains\r |
385 | the source for the write\r |
386 | \r |
387 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
388 | @retval EFI_SUCESS Sucess to write block\r |
389 | @retval Others Fail to write block\r |
390 | **/\r |
391 | EFI_STATUS\r |
392 | EfiFvbWriteBlock (\r |
393 | IN UINTN Instance,\r |
394 | IN EFI_LBA Lba,\r |
395 | IN UINTN Offset,\r |
396 | IN OUT UINTN *NumBytes,\r |
397 | IN UINT8 *Buffer\r |
398 | )\r |
399 | {\r |
400 | if (Instance >= mFvbCount) {\r |
401 | return EFI_INVALID_PARAMETER;\r |
402 | }\r |
403 | \r |
404 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
405 | return EFI_INVALID_PARAMETER;\r |
406 | }\r |
407 | \r |
408 | return mFvbEntry[Instance].Fvb->Write (mFvbEntry[Instance].Fvb, Lba, Offset, NumBytes, Buffer);\r |
409 | }\r |
410 | \r |
411 | /**\r |
412 | Erases and initializes a firmware volume block\r |
413 | \r |
414 | @param Instance The FV instance to be erased\r |
415 | @param Lba The logical block index to be erased\r |
416 | \r |
417 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
418 | @retval EFI_SUCESS Sucess to erase block\r |
419 | @retval Others Fail to erase block\r |
420 | **/\r |
421 | EFI_STATUS\r |
422 | EfiFvbEraseBlock (\r |
423 | IN UINTN Instance,\r |
424 | IN EFI_LBA Lba\r |
425 | )\r |
426 | {\r |
427 | if (Instance >= mFvbCount) {\r |
428 | return EFI_INVALID_PARAMETER;\r |
429 | }\r |
430 | \r |
431 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
432 | return EFI_INVALID_PARAMETER;\r |
433 | }\r |
434 | \r |
435 | return mFvbEntry[Instance].Fvb->EraseBlocks (mFvbEntry[Instance].Fvb, Lba, -1);\r |
436 | }\r |
437 | \r |
438 | /**\r |
439 | Retrieves attributes, insures positive polarity of attribute bits, returns\r |
440 | resulting attributes in output parameter\r |
441 | \r |
442 | @param Instance The FV instance whose attributes is going to be returned\r |
443 | @param Attributes Output buffer which contains attributes\r |
444 | \r |
445 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
446 | @retval EFI_SUCESS Sucess to get Fv attribute\r |
447 | @retval Others Fail to get Fv attribute\r |
448 | **/\r |
449 | EFI_STATUS\r |
450 | EfiFvbGetVolumeAttributes (\r |
451 | IN UINTN Instance,\r |
452 | OUT EFI_FVB_ATTRIBUTES *Attributes\r |
453 | )\r |
454 | {\r |
455 | if (Instance >= mFvbCount) {\r |
456 | return EFI_INVALID_PARAMETER;\r |
457 | }\r |
458 | \r |
459 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
460 | return EFI_INVALID_PARAMETER;\r |
461 | }\r |
462 | \r |
463 | return mFvbEntry[Instance].Fvb->GetAttributes (mFvbEntry[Instance].Fvb, Attributes);\r |
464 | }\r |
465 | \r |
466 | /**\r |
467 | Modifies the current settings of the firmware volume according to the\r |
468 | input parameter, and returns the new setting of the volume\r |
469 | \r |
470 | @param Instance The FV instance whose attributes is going to be\r |
471 | modified\r |
472 | @param Attributes On input, it is a pointer to EFI_FVB_ATTRIBUTES\r |
473 | containing the desired firmware volume settings.\r |
474 | On successful return, it contains the new settings\r |
475 | of the firmware volume\r |
476 | \r |
477 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
478 | @retval EFI_SUCESS Sucess to set Fv attribute\r |
479 | @retval Others Fail to set Fv attribute\r |
480 | **/\r |
481 | EFI_STATUS\r |
482 | EfiFvbSetVolumeAttributes (\r |
d3a58e2d |
483 | IN UINTN Instance,\r |
484 | IN OUT EFI_FVB_ATTRIBUTES *Attributes\r |
a190687a |
485 | )\r |
486 | {\r |
487 | if (Instance >= mFvbCount) {\r |
488 | return EFI_INVALID_PARAMETER;\r |
489 | }\r |
490 | \r |
491 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
492 | return EFI_INVALID_PARAMETER;\r |
493 | }\r |
494 | \r |
d3a58e2d |
495 | return mFvbEntry[Instance].Fvb->SetAttributes (mFvbEntry[Instance].Fvb, Attributes);\r |
a190687a |
496 | }\r |
497 | \r |
498 | /**\r |
499 | Retrieves the physical address of a memory mapped FV\r |
500 | \r |
501 | @param Instance The FV instance whose base address is going to be\r |
502 | returned\r |
503 | @param BaseAddress Pointer to a caller allocated EFI_PHYSICAL_ADDRESS\r |
504 | that on successful return, contains the base address\r |
505 | of the firmware volume.\r |
506 | \r |
507 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
508 | @retval EFI_SUCESS Sucess to get physical address\r |
509 | @retval Others Fail to get physical address\r |
510 | **/\r |
511 | EFI_STATUS\r |
512 | EfiFvbGetPhysicalAddress (\r |
513 | IN UINTN Instance,\r |
514 | OUT EFI_PHYSICAL_ADDRESS *BaseAddress\r |
515 | )\r |
516 | {\r |
517 | if (Instance >= mFvbCount) {\r |
518 | return EFI_INVALID_PARAMETER;\r |
519 | }\r |
520 | \r |
521 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
522 | return EFI_INVALID_PARAMETER;\r |
523 | }\r |
524 | \r |
525 | return mFvbEntry[Instance].Fvb->GetPhysicalAddress (mFvbEntry[Instance].Fvb, BaseAddress);\r |
526 | }\r |
527 | \r |
528 | /**\r |
529 | Retrieve the size of a logical block\r |
530 | \r |
531 | @param Instance The FV instance whose block size is going to be\r |
532 | returned\r |
533 | @param Lba Indicates which block to return the size for.\r |
534 | @param BlockSize A pointer to a caller allocated UINTN in which\r |
535 | the size of the block is returned\r |
536 | @param NumOfBlocks a pointer to a caller allocated UINTN in which the\r |
537 | number of consecutive blocks starting with Lba is\r |
538 | returned. All blocks in this range have a size of\r |
539 | BlockSize\r |
540 | \r |
541 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
542 | @retval EFI_SUCESS Sucess to get block size\r |
543 | @retval Others Fail to get block size\r |
544 | **/\r |
545 | EFI_STATUS\r |
546 | EfiFvbGetBlockSize (\r |
547 | IN UINTN Instance,\r |
548 | IN EFI_LBA Lba,\r |
549 | OUT UINTN *BlockSize,\r |
550 | OUT UINTN *NumOfBlocks\r |
551 | )\r |
552 | {\r |
553 | if (Instance >= mFvbCount) {\r |
554 | return EFI_INVALID_PARAMETER;\r |
555 | }\r |
556 | \r |
557 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
558 | return EFI_INVALID_PARAMETER;\r |
559 | }\r |
560 | \r |
561 | return mFvbEntry[Instance].Fvb->GetBlockSize (mFvbEntry[Instance].Fvb, Lba, BlockSize, NumOfBlocks);\r |
562 | }\r |
563 | \r |
564 | /**\r |
565 | Erases and initializes a specified range of a firmware volume\r |
566 | \r |
567 | @param Instance The FV instance to be erased\r |
568 | @param StartLba The starting logical block index to be erased\r |
569 | @param OffsetStartLba Offset into the starting block at which to\r |
570 | begin erasing\r |
571 | @param LastLba The last logical block index to be erased\r |
572 | @param OffsetLastLba Offset into the last block at which to end erasing\r |
573 | \r |
574 | @retval EFI_INVALID_PARAMETER Invalid parameter\r |
575 | @retval EFI_SUCESS Sucess to erase custom block range\r |
576 | @retval Others Fail to erase custom block range\r |
577 | **/\r |
578 | EFI_STATUS\r |
579 | EfiFvbEraseCustomBlockRange (\r |
580 | IN UINTN Instance,\r |
581 | IN EFI_LBA StartLba,\r |
582 | IN UINTN OffsetStartLba,\r |
583 | IN EFI_LBA LastLba,\r |
584 | IN UINTN OffsetLastLba\r |
585 | )\r |
586 | {\r |
587 | if (Instance >= mFvbCount) {\r |
588 | return EFI_INVALID_PARAMETER;\r |
589 | }\r |
590 | \r |
591 | if (EfiAtRuntime() && !mFvbEntry[Instance].IsRuntimeAccess) {\r |
592 | return EFI_INVALID_PARAMETER;\r |
593 | }\r |
594 | \r |
595 | if (!(mFvbEntry[Instance].FvbExtension)) {\r |
596 | return EFI_UNSUPPORTED;\r |
597 | }\r |
598 | \r |
599 | if (!(mFvbEntry[Instance].FvbExtension->EraseFvbCustomBlock)) {\r |
600 | return EFI_UNSUPPORTED;\r |
601 | }\r |
602 | \r |
603 | return mFvbEntry[Instance].FvbExtension->EraseFvbCustomBlock (\r |
604 | mFvbEntry[Instance].FvbExtension,\r |
605 | StartLba,\r |
606 | OffsetStartLba,\r |
607 | LastLba,\r |
608 | OffsetLastLba\r |
609 | );\r |
610 | }\r |