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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 | |
483 | IN UINTN Instance,\r | |
484 | IN EFI_FVB_ATTRIBUTES Attributes\r | |
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 | |
495 | return mFvbEntry[Instance].Fvb->SetAttributes (mFvbEntry[Instance].Fvb, &Attributes);\r | |
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 |