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1 | /** @file\r | |
2 | \r | |
3 | The common variable operation routines shared by DXE_RUNTIME variable \r | |
4 | module and DXE_SMM variable module.\r | |
5 | \r | |
6 | Caution: This module requires additional review when modified.\r | |
7 | This driver will have external input - variable data. They may be input in SMM mode.\r | |
8 | This external input must be validated carefully to avoid security issue like\r | |
9 | buffer overflow, integer overflow.\r | |
10 | \r | |
11 | VariableServiceGetNextVariableName () and VariableServiceQueryVariableInfo() are external API.\r | |
12 | They need check input parameter.\r | |
13 | \r | |
14 | VariableServiceGetVariable() and VariableServiceSetVariable() are external API\r | |
15 | to receive datasize and data buffer. The size should be checked carefully.\r | |
16 | \r | |
17 | Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
18 | This program and the accompanying materials \r | |
19 | are licensed and made available under the terms and conditions of the BSD License \r | |
20 | which accompanies this distribution. The full text of the license may be found at \r | |
21 | http://opensource.org/licenses/bsd-license.php \r | |
22 | \r | |
23 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
24 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
25 | \r | |
26 | **/\r | |
27 | \r | |
28 | #include "Variable.h"\r | |
29 | \r | |
30 | VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r | |
31 | \r | |
32 | ///\r | |
33 | /// Define a memory cache that improves the search performance for a variable.\r | |
34 | ///\r | |
35 | VARIABLE_STORE_HEADER *mNvVariableCache = NULL;\r | |
36 | \r | |
37 | ///\r | |
38 | /// The memory entry used for variable statistics data.\r | |
39 | ///\r | |
40 | VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r | |
41 | \r | |
42 | ///\r | |
43 | /// The list to store the variables which cannot be set after the EFI_END_OF_DXE_EVENT_GROUP_GUID\r | |
44 | /// or EVT_GROUP_READY_TO_BOOT event.\r | |
45 | ///\r | |
46 | LIST_ENTRY mLockedVariableList = INITIALIZE_LIST_HEAD_VARIABLE (mLockedVariableList);\r | |
47 | \r | |
48 | ///\r | |
49 | /// The flag to indicate whether the platform has left the DXE phase of execution.\r | |
50 | ///\r | |
51 | BOOLEAN mEndOfDxe = FALSE;\r | |
52 | \r | |
53 | ///\r | |
54 | /// The flag to indicate whether the variable storage locking is enabled.\r | |
55 | ///\r | |
56 | BOOLEAN mEnableLocking = TRUE;\r | |
57 | \r | |
58 | //\r | |
59 | // It will record the current boot error flag before EndOfDxe.\r | |
60 | //\r | |
61 | VAR_ERROR_FLAG mCurrentBootVarErrFlag = VAR_ERROR_FLAG_NO_ERROR;\r | |
62 | \r | |
63 | /**\r | |
64 | Routine used to track statistical information about variable usage. \r | |
65 | The data is stored in the EFI system table so it can be accessed later.\r | |
66 | VariableInfo.efi can dump out the table. Only Boot Services variable \r | |
67 | accesses are tracked by this code. The PcdVariableCollectStatistics\r | |
68 | build flag controls if this feature is enabled. \r | |
69 | \r | |
70 | A read that hits in the cache will have Read and Cache true for \r | |
71 | the transaction. Data is allocated by this routine, but never\r | |
72 | freed.\r | |
73 | \r | |
74 | @param[in] VariableName Name of the Variable to track.\r | |
75 | @param[in] VendorGuid Guid of the Variable to track.\r | |
76 | @param[in] Volatile TRUE if volatile FALSE if non-volatile.\r | |
77 | @param[in] Read TRUE if GetVariable() was called.\r | |
78 | @param[in] Write TRUE if SetVariable() was called.\r | |
79 | @param[in] Delete TRUE if deleted via SetVariable().\r | |
80 | @param[in] Cache TRUE for a cache hit.\r | |
81 | \r | |
82 | **/\r | |
83 | VOID\r | |
84 | UpdateVariableInfo (\r | |
85 | IN CHAR16 *VariableName,\r | |
86 | IN EFI_GUID *VendorGuid,\r | |
87 | IN BOOLEAN Volatile,\r | |
88 | IN BOOLEAN Read,\r | |
89 | IN BOOLEAN Write,\r | |
90 | IN BOOLEAN Delete,\r | |
91 | IN BOOLEAN Cache\r | |
92 | )\r | |
93 | {\r | |
94 | VARIABLE_INFO_ENTRY *Entry;\r | |
95 | \r | |
96 | if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r | |
97 | \r | |
98 | if (AtRuntime ()) {\r | |
99 | // Don't collect statistics at runtime.\r | |
100 | return;\r | |
101 | }\r | |
102 | \r | |
103 | if (gVariableInfo == NULL) {\r | |
104 | //\r | |
105 | // On the first call allocate a entry and place a pointer to it in\r | |
106 | // the EFI System Table.\r | |
107 | //\r | |
108 | gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r | |
109 | ASSERT (gVariableInfo != NULL);\r | |
110 | \r | |
111 | CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);\r | |
112 | gVariableInfo->Name = AllocateZeroPool (StrSize (VariableName));\r | |
113 | ASSERT (gVariableInfo->Name != NULL);\r | |
114 | StrnCpy (gVariableInfo->Name, VariableName, StrLen (VariableName));\r | |
115 | gVariableInfo->Volatile = Volatile;\r | |
116 | }\r | |
117 | \r | |
118 | \r | |
119 | for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {\r | |
120 | if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {\r | |
121 | if (StrCmp (VariableName, Entry->Name) == 0) {\r | |
122 | if (Read) {\r | |
123 | Entry->ReadCount++;\r | |
124 | }\r | |
125 | if (Write) {\r | |
126 | Entry->WriteCount++;\r | |
127 | }\r | |
128 | if (Delete) {\r | |
129 | Entry->DeleteCount++;\r | |
130 | }\r | |
131 | if (Cache) {\r | |
132 | Entry->CacheCount++;\r | |
133 | }\r | |
134 | \r | |
135 | return;\r | |
136 | }\r | |
137 | }\r | |
138 | \r | |
139 | if (Entry->Next == NULL) {\r | |
140 | //\r | |
141 | // If the entry is not in the table add it.\r | |
142 | // Next iteration of the loop will fill in the data.\r | |
143 | //\r | |
144 | Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r | |
145 | ASSERT (Entry->Next != NULL);\r | |
146 | \r | |
147 | CopyGuid (&Entry->Next->VendorGuid, VendorGuid);\r | |
148 | Entry->Next->Name = AllocateZeroPool (StrSize (VariableName));\r | |
149 | ASSERT (Entry->Next->Name != NULL);\r | |
150 | StrnCpy (Entry->Next->Name, VariableName, StrLen (VariableName));\r | |
151 | Entry->Next->Volatile = Volatile;\r | |
152 | }\r | |
153 | \r | |
154 | }\r | |
155 | }\r | |
156 | }\r | |
157 | \r | |
158 | \r | |
159 | /**\r | |
160 | \r | |
161 | This code checks if variable header is valid or not.\r | |
162 | \r | |
163 | @param Variable Pointer to the Variable Header.\r | |
164 | @param VariableStoreEnd Pointer to the Variable Store End.\r | |
165 | \r | |
166 | @retval TRUE Variable header is valid.\r | |
167 | @retval FALSE Variable header is not valid.\r | |
168 | \r | |
169 | **/\r | |
170 | BOOLEAN\r | |
171 | IsValidVariableHeader (\r | |
172 | IN VARIABLE_HEADER *Variable,\r | |
173 | IN VARIABLE_HEADER *VariableStoreEnd\r | |
174 | )\r | |
175 | {\r | |
176 | if ((Variable == NULL) || (Variable >= VariableStoreEnd) || (Variable->StartId != VARIABLE_DATA)) {\r | |
177 | //\r | |
178 | // Variable is NULL or has reached the end of variable store,\r | |
179 | // or the StartId is not correct.\r | |
180 | //\r | |
181 | return FALSE;\r | |
182 | }\r | |
183 | \r | |
184 | return TRUE;\r | |
185 | }\r | |
186 | \r | |
187 | \r | |
188 | /**\r | |
189 | \r | |
190 | This function writes data to the FWH at the correct LBA even if the LBAs\r | |
191 | are fragmented.\r | |
192 | \r | |
193 | @param Global Pointer to VARAIBLE_GLOBAL structure.\r | |
194 | @param Volatile Point out the Variable is Volatile or Non-Volatile.\r | |
195 | @param SetByIndex TRUE if target pointer is given as index.\r | |
196 | FALSE if target pointer is absolute.\r | |
197 | @param Fvb Pointer to the writable FVB protocol.\r | |
198 | @param DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r | |
199 | structure.\r | |
200 | @param DataSize Size of data to be written.\r | |
201 | @param Buffer Pointer to the buffer from which data is written.\r | |
202 | \r | |
203 | @retval EFI_INVALID_PARAMETER Parameters not valid.\r | |
204 | @retval EFI_SUCCESS Variable store successfully updated.\r | |
205 | \r | |
206 | **/\r | |
207 | EFI_STATUS\r | |
208 | UpdateVariableStore (\r | |
209 | IN VARIABLE_GLOBAL *Global,\r | |
210 | IN BOOLEAN Volatile,\r | |
211 | IN BOOLEAN SetByIndex,\r | |
212 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r | |
213 | IN UINTN DataPtrIndex,\r | |
214 | IN UINT32 DataSize,\r | |
215 | IN UINT8 *Buffer\r | |
216 | )\r | |
217 | {\r | |
218 | EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r | |
219 | UINTN BlockIndex2;\r | |
220 | UINTN LinearOffset;\r | |
221 | UINTN CurrWriteSize;\r | |
222 | UINTN CurrWritePtr;\r | |
223 | UINT8 *CurrBuffer;\r | |
224 | EFI_LBA LbaNumber;\r | |
225 | UINTN Size;\r | |
226 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
227 | VARIABLE_STORE_HEADER *VolatileBase;\r | |
228 | EFI_PHYSICAL_ADDRESS FvVolHdr;\r | |
229 | EFI_PHYSICAL_ADDRESS DataPtr;\r | |
230 | EFI_STATUS Status;\r | |
231 | \r | |
232 | FwVolHeader = NULL;\r | |
233 | DataPtr = DataPtrIndex;\r | |
234 | \r | |
235 | //\r | |
236 | // Check if the Data is Volatile.\r | |
237 | //\r | |
238 | if (!Volatile) {\r | |
239 | ASSERT (Fvb != NULL);\r | |
240 | Status = Fvb->GetPhysicalAddress(Fvb, &FvVolHdr);\r | |
241 | ASSERT_EFI_ERROR (Status);\r | |
242 | \r | |
243 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvVolHdr);\r | |
244 | //\r | |
245 | // Data Pointer should point to the actual Address where data is to be\r | |
246 | // written.\r | |
247 | //\r | |
248 | if (SetByIndex) {\r | |
249 | DataPtr += mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r | |
250 | }\r | |
251 | \r | |
252 | if ((DataPtr + DataSize) >= ((EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) FwVolHeader + FwVolHeader->FvLength))) {\r | |
253 | return EFI_INVALID_PARAMETER;\r | |
254 | }\r | |
255 | } else {\r | |
256 | //\r | |
257 | // Data Pointer should point to the actual Address where data is to be\r | |
258 | // written.\r | |
259 | //\r | |
260 | VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r | |
261 | if (SetByIndex) {\r | |
262 | DataPtr += mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r | |
263 | }\r | |
264 | \r | |
265 | if ((DataPtr + DataSize) >= ((UINTN) ((UINT8 *) VolatileBase + VolatileBase->Size))) {\r | |
266 | return EFI_INVALID_PARAMETER;\r | |
267 | }\r | |
268 | \r | |
269 | //\r | |
270 | // If Volatile Variable just do a simple mem copy.\r | |
271 | // \r | |
272 | CopyMem ((UINT8 *)(UINTN)DataPtr, Buffer, DataSize);\r | |
273 | return EFI_SUCCESS;\r | |
274 | }\r | |
275 | \r | |
276 | //\r | |
277 | // If we are here we are dealing with Non-Volatile Variables.\r | |
278 | //\r | |
279 | LinearOffset = (UINTN) FwVolHeader;\r | |
280 | CurrWritePtr = (UINTN) DataPtr;\r | |
281 | CurrWriteSize = DataSize;\r | |
282 | CurrBuffer = Buffer;\r | |
283 | LbaNumber = 0;\r | |
284 | \r | |
285 | if (CurrWritePtr < LinearOffset) {\r | |
286 | return EFI_INVALID_PARAMETER;\r | |
287 | }\r | |
288 | \r | |
289 | for (PtrBlockMapEntry = FwVolHeader->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r | |
290 | for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r | |
291 | //\r | |
292 | // Check to see if the Variable Writes are spanning through multiple\r | |
293 | // blocks.\r | |
294 | //\r | |
295 | if ((CurrWritePtr >= LinearOffset) && (CurrWritePtr < LinearOffset + PtrBlockMapEntry->Length)) {\r | |
296 | if ((CurrWritePtr + CurrWriteSize) <= (LinearOffset + PtrBlockMapEntry->Length)) {\r | |
297 | Status = Fvb->Write (\r | |
298 | Fvb,\r | |
299 | LbaNumber,\r | |
300 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
301 | &CurrWriteSize,\r | |
302 | CurrBuffer\r | |
303 | );\r | |
304 | return Status;\r | |
305 | } else {\r | |
306 | Size = (UINT32) (LinearOffset + PtrBlockMapEntry->Length - CurrWritePtr);\r | |
307 | Status = Fvb->Write (\r | |
308 | Fvb,\r | |
309 | LbaNumber,\r | |
310 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
311 | &Size,\r | |
312 | CurrBuffer\r | |
313 | );\r | |
314 | if (EFI_ERROR (Status)) {\r | |
315 | return Status;\r | |
316 | }\r | |
317 | \r | |
318 | CurrWritePtr = LinearOffset + PtrBlockMapEntry->Length;\r | |
319 | CurrBuffer = CurrBuffer + Size;\r | |
320 | CurrWriteSize = CurrWriteSize - Size;\r | |
321 | }\r | |
322 | }\r | |
323 | \r | |
324 | LinearOffset += PtrBlockMapEntry->Length;\r | |
325 | LbaNumber++;\r | |
326 | }\r | |
327 | }\r | |
328 | \r | |
329 | return EFI_SUCCESS;\r | |
330 | }\r | |
331 | \r | |
332 | \r | |
333 | /**\r | |
334 | \r | |
335 | This code gets the current status of Variable Store.\r | |
336 | \r | |
337 | @param VarStoreHeader Pointer to the Variable Store Header.\r | |
338 | \r | |
339 | @retval EfiRaw Variable store status is raw.\r | |
340 | @retval EfiValid Variable store status is valid.\r | |
341 | @retval EfiInvalid Variable store status is invalid.\r | |
342 | \r | |
343 | **/\r | |
344 | VARIABLE_STORE_STATUS\r | |
345 | GetVariableStoreStatus (\r | |
346 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
347 | )\r | |
348 | {\r | |
349 | if (CompareGuid (&VarStoreHeader->Signature, &gEfiVariableGuid) &&\r | |
350 | VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r | |
351 | VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r | |
352 | ) {\r | |
353 | \r | |
354 | return EfiValid;\r | |
355 | } else if (((UINT32 *)(&VarStoreHeader->Signature))[0] == 0xffffffff &&\r | |
356 | ((UINT32 *)(&VarStoreHeader->Signature))[1] == 0xffffffff &&\r | |
357 | ((UINT32 *)(&VarStoreHeader->Signature))[2] == 0xffffffff &&\r | |
358 | ((UINT32 *)(&VarStoreHeader->Signature))[3] == 0xffffffff &&\r | |
359 | VarStoreHeader->Size == 0xffffffff &&\r | |
360 | VarStoreHeader->Format == 0xff &&\r | |
361 | VarStoreHeader->State == 0xff\r | |
362 | ) {\r | |
363 | \r | |
364 | return EfiRaw;\r | |
365 | } else {\r | |
366 | return EfiInvalid;\r | |
367 | }\r | |
368 | }\r | |
369 | \r | |
370 | \r | |
371 | /**\r | |
372 | \r | |
373 | This code gets the size of name of variable.\r | |
374 | \r | |
375 | @param Variable Pointer to the Variable Header.\r | |
376 | \r | |
377 | @return UINTN Size of variable in bytes.\r | |
378 | \r | |
379 | **/\r | |
380 | UINTN\r | |
381 | NameSizeOfVariable (\r | |
382 | IN VARIABLE_HEADER *Variable\r | |
383 | )\r | |
384 | {\r | |
385 | if (Variable->State == (UINT8) (-1) ||\r | |
386 | Variable->DataSize == (UINT32) (-1) ||\r | |
387 | Variable->NameSize == (UINT32) (-1) ||\r | |
388 | Variable->Attributes == (UINT32) (-1)) {\r | |
389 | return 0;\r | |
390 | }\r | |
391 | return (UINTN) Variable->NameSize;\r | |
392 | }\r | |
393 | \r | |
394 | /**\r | |
395 | \r | |
396 | This code gets the size of variable data.\r | |
397 | \r | |
398 | @param Variable Pointer to the Variable Header.\r | |
399 | \r | |
400 | @return Size of variable in bytes.\r | |
401 | \r | |
402 | **/\r | |
403 | UINTN\r | |
404 | DataSizeOfVariable (\r | |
405 | IN VARIABLE_HEADER *Variable\r | |
406 | )\r | |
407 | {\r | |
408 | if (Variable->State == (UINT8) (-1) ||\r | |
409 | Variable->DataSize == (UINT32) (-1) ||\r | |
410 | Variable->NameSize == (UINT32) (-1) ||\r | |
411 | Variable->Attributes == (UINT32) (-1)) {\r | |
412 | return 0;\r | |
413 | }\r | |
414 | return (UINTN) Variable->DataSize;\r | |
415 | }\r | |
416 | \r | |
417 | /**\r | |
418 | \r | |
419 | This code gets the pointer to the variable name.\r | |
420 | \r | |
421 | @param Variable Pointer to the Variable Header.\r | |
422 | \r | |
423 | @return Pointer to Variable Name which is Unicode encoding.\r | |
424 | \r | |
425 | **/\r | |
426 | CHAR16 *\r | |
427 | GetVariableNamePtr (\r | |
428 | IN VARIABLE_HEADER *Variable\r | |
429 | )\r | |
430 | {\r | |
431 | \r | |
432 | return (CHAR16 *) (Variable + 1);\r | |
433 | }\r | |
434 | \r | |
435 | /**\r | |
436 | \r | |
437 | This code gets the pointer to the variable data.\r | |
438 | \r | |
439 | @param Variable Pointer to the Variable Header.\r | |
440 | \r | |
441 | @return Pointer to Variable Data.\r | |
442 | \r | |
443 | **/\r | |
444 | UINT8 *\r | |
445 | GetVariableDataPtr (\r | |
446 | IN VARIABLE_HEADER *Variable\r | |
447 | )\r | |
448 | {\r | |
449 | UINTN Value;\r | |
450 | \r | |
451 | //\r | |
452 | // Be careful about pad size for alignment.\r | |
453 | //\r | |
454 | Value = (UINTN) GetVariableNamePtr (Variable);\r | |
455 | Value += NameSizeOfVariable (Variable);\r | |
456 | Value += GET_PAD_SIZE (NameSizeOfVariable (Variable));\r | |
457 | \r | |
458 | return (UINT8 *) Value;\r | |
459 | }\r | |
460 | \r | |
461 | \r | |
462 | /**\r | |
463 | \r | |
464 | This code gets the pointer to the next variable header.\r | |
465 | \r | |
466 | @param Variable Pointer to the Variable Header.\r | |
467 | \r | |
468 | @return Pointer to next variable header.\r | |
469 | \r | |
470 | **/\r | |
471 | VARIABLE_HEADER *\r | |
472 | GetNextVariablePtr (\r | |
473 | IN VARIABLE_HEADER *Variable\r | |
474 | )\r | |
475 | {\r | |
476 | UINTN Value;\r | |
477 | \r | |
478 | Value = (UINTN) GetVariableDataPtr (Variable);\r | |
479 | Value += DataSizeOfVariable (Variable);\r | |
480 | Value += GET_PAD_SIZE (DataSizeOfVariable (Variable));\r | |
481 | \r | |
482 | //\r | |
483 | // Be careful about pad size for alignment.\r | |
484 | //\r | |
485 | return (VARIABLE_HEADER *) HEADER_ALIGN (Value);\r | |
486 | }\r | |
487 | \r | |
488 | /**\r | |
489 | \r | |
490 | Gets the pointer to the first variable header in given variable store area.\r | |
491 | \r | |
492 | @param VarStoreHeader Pointer to the Variable Store Header.\r | |
493 | \r | |
494 | @return Pointer to the first variable header.\r | |
495 | \r | |
496 | **/\r | |
497 | VARIABLE_HEADER *\r | |
498 | GetStartPointer (\r | |
499 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
500 | )\r | |
501 | {\r | |
502 | //\r | |
503 | // The end of variable store.\r | |
504 | //\r | |
505 | return (VARIABLE_HEADER *) HEADER_ALIGN (VarStoreHeader + 1);\r | |
506 | }\r | |
507 | \r | |
508 | /**\r | |
509 | \r | |
510 | Gets the pointer to the end of the variable storage area.\r | |
511 | \r | |
512 | This function gets pointer to the end of the variable storage\r | |
513 | area, according to the input variable store header.\r | |
514 | \r | |
515 | @param VarStoreHeader Pointer to the Variable Store Header.\r | |
516 | \r | |
517 | @return Pointer to the end of the variable storage area. \r | |
518 | \r | |
519 | **/\r | |
520 | VARIABLE_HEADER *\r | |
521 | GetEndPointer (\r | |
522 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
523 | )\r | |
524 | {\r | |
525 | //\r | |
526 | // The end of variable store\r | |
527 | //\r | |
528 | return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r | |
529 | }\r | |
530 | \r | |
531 | /**\r | |
532 | Record variable error flag.\r | |
533 | \r | |
534 | @param[in] Flag Variable error flag to record.\r | |
535 | @param[in] VariableName Name of variable.\r | |
536 | @param[in] VendorGuid Guid of variable.\r | |
537 | @param[in] Attributes Attributes of the variable.\r | |
538 | @param[in] VariableSize Size of the variable.\r | |
539 | \r | |
540 | **/\r | |
541 | VOID\r | |
542 | RecordVarErrorFlag (\r | |
543 | IN VAR_ERROR_FLAG Flag,\r | |
544 | IN CHAR16 *VariableName,\r | |
545 | IN EFI_GUID *VendorGuid,\r | |
546 | IN UINT32 Attributes,\r | |
547 | IN UINTN VariableSize\r | |
548 | )\r | |
549 | {\r | |
550 | EFI_STATUS Status;\r | |
551 | VARIABLE_POINTER_TRACK Variable;\r | |
552 | VAR_ERROR_FLAG *VarErrFlag;\r | |
553 | VAR_ERROR_FLAG TempFlag;\r | |
554 | \r | |
555 | DEBUG_CODE (\r | |
556 | DEBUG ((EFI_D_ERROR, "RecordVarErrorFlag (0x%02x) %s:%g - 0x%08x - 0x%x\n", Flag, VariableName, VendorGuid, Attributes, VariableSize));\r | |
557 | if (Flag == VAR_ERROR_FLAG_SYSTEM_ERROR) {\r | |
558 | if (AtRuntime ()) {\r | |
559 | DEBUG ((EFI_D_ERROR, "CommonRuntimeVariableSpace = 0x%x - CommonVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonRuntimeVariableSpace, mVariableModuleGlobal->CommonVariableTotalSize));\r | |
560 | } else {\r | |
561 | DEBUG ((EFI_D_ERROR, "CommonVariableSpace = 0x%x - CommonVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonVariableSpace, mVariableModuleGlobal->CommonVariableTotalSize));\r | |
562 | }\r | |
563 | } else {\r | |
564 | DEBUG ((EFI_D_ERROR, "CommonMaxUserVariableSpace = 0x%x - CommonUserVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonMaxUserVariableSpace, mVariableModuleGlobal->CommonUserVariableTotalSize));\r | |
565 | }\r | |
566 | );\r | |
567 | \r | |
568 | if (!mEndOfDxe) {\r | |
569 | //\r | |
570 | // Before EndOfDxe, just record the current boot variable error flag to local variable,\r | |
571 | // and leave the variable error flag in NV flash as the last boot variable error flag.\r | |
572 | // After EndOfDxe in InitializeVarErrorFlag (), the variable error flag in NV flash\r | |
573 | // will be initialized to this local current boot variable error flag.\r | |
574 | //\r | |
575 | mCurrentBootVarErrFlag &= Flag;\r | |
576 | return;\r | |
577 | }\r | |
578 | \r | |
579 | //\r | |
580 | // Record error flag (it should have be initialized).\r | |
581 | //\r | |
582 | Status = FindVariable (\r | |
583 | VAR_ERROR_FLAG_NAME,\r | |
584 | &gEdkiiVarErrorFlagGuid,\r | |
585 | &Variable,\r | |
586 | &mVariableModuleGlobal->VariableGlobal,\r | |
587 | FALSE\r | |
588 | );\r | |
589 | if (!EFI_ERROR (Status)) {\r | |
590 | VarErrFlag = (VAR_ERROR_FLAG *) GetVariableDataPtr (Variable.CurrPtr);\r | |
591 | TempFlag = *VarErrFlag;\r | |
592 | TempFlag &= Flag;\r | |
593 | if (TempFlag == *VarErrFlag) {\r | |
594 | return;\r | |
595 | }\r | |
596 | Status = UpdateVariableStore (\r | |
597 | &mVariableModuleGlobal->VariableGlobal,\r | |
598 | FALSE,\r | |
599 | FALSE,\r | |
600 | mVariableModuleGlobal->FvbInstance,\r | |
601 | (UINTN) VarErrFlag - (UINTN) mNvVariableCache + (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
602 | sizeof (TempFlag),\r | |
603 | &TempFlag\r | |
604 | );\r | |
605 | if (!EFI_ERROR (Status)) {\r | |
606 | //\r | |
607 | // Update the data in NV cache.\r | |
608 | //\r | |
609 | *VarErrFlag = Flag;\r | |
610 | }\r | |
611 | }\r | |
612 | }\r | |
613 | \r | |
614 | /**\r | |
615 | Initialize variable error flag.\r | |
616 | \r | |
617 | Before EndOfDxe, the variable indicates the last boot variable error flag,\r | |
618 | then it means the last boot variable error flag must be got before EndOfDxe.\r | |
619 | After EndOfDxe, the variable indicates the current boot variable error flag,\r | |
620 | then it means the current boot variable error flag must be got after EndOfDxe.\r | |
621 | \r | |
622 | **/\r | |
623 | VOID\r | |
624 | InitializeVarErrorFlag (\r | |
625 | VOID\r | |
626 | )\r | |
627 | {\r | |
628 | EFI_STATUS Status;\r | |
629 | VARIABLE_POINTER_TRACK Variable;\r | |
630 | VAR_ERROR_FLAG Flag;\r | |
631 | VAR_ERROR_FLAG VarErrFlag;\r | |
632 | \r | |
633 | if (!mEndOfDxe) {\r | |
634 | return;\r | |
635 | }\r | |
636 | \r | |
637 | Flag = mCurrentBootVarErrFlag;\r | |
638 | DEBUG ((EFI_D_INFO, "Initialize variable error flag (%02x)\n", Flag));\r | |
639 | \r | |
640 | Status = FindVariable (\r | |
641 | VAR_ERROR_FLAG_NAME,\r | |
642 | &gEdkiiVarErrorFlagGuid,\r | |
643 | &Variable,\r | |
644 | &mVariableModuleGlobal->VariableGlobal,\r | |
645 | FALSE\r | |
646 | );\r | |
647 | if (!EFI_ERROR (Status)) {\r | |
648 | VarErrFlag = *((VAR_ERROR_FLAG *) GetVariableDataPtr (Variable.CurrPtr));\r | |
649 | if (VarErrFlag == Flag) {\r | |
650 | return;\r | |
651 | }\r | |
652 | }\r | |
653 | \r | |
654 | UpdateVariable (\r | |
655 | VAR_ERROR_FLAG_NAME,\r | |
656 | &gEdkiiVarErrorFlagGuid,\r | |
657 | &Flag,\r | |
658 | sizeof (Flag),\r | |
659 | VARIABLE_ATTRIBUTE_NV_BS_RT,\r | |
660 | &Variable\r | |
661 | );\r | |
662 | }\r | |
663 | \r | |
664 | /**\r | |
665 | Is user variable?\r | |
666 | \r | |
667 | @param[in] Variable Pointer to variable header.\r | |
668 | \r | |
669 | @retval TRUE User variable.\r | |
670 | @retval FALSE System variable.\r | |
671 | \r | |
672 | **/\r | |
673 | BOOLEAN\r | |
674 | IsUserVariable (\r | |
675 | IN VARIABLE_HEADER *Variable\r | |
676 | )\r | |
677 | {\r | |
678 | VAR_CHECK_VARIABLE_PROPERTY Property;\r | |
679 | \r | |
680 | //\r | |
681 | // Only after End Of Dxe, the variables belong to system variable are fixed.\r | |
682 | // If PcdMaxUserNvStorageVariableSize is 0, it means user variable share the same NV storage with system variable,\r | |
683 | // then no need to check if the variable is user variable or not specially.\r | |
684 | //\r | |
685 | if (mEndOfDxe && (mVariableModuleGlobal->CommonMaxUserVariableSpace != mVariableModuleGlobal->CommonVariableSpace)) {\r | |
686 | if (InternalVarCheckVariablePropertyGet (GetVariableNamePtr (Variable), &Variable->VendorGuid, &Property) == EFI_NOT_FOUND) {\r | |
687 | return TRUE;\r | |
688 | }\r | |
689 | }\r | |
690 | return FALSE;\r | |
691 | }\r | |
692 | \r | |
693 | /**\r | |
694 | Calculate common user variable total size.\r | |
695 | \r | |
696 | **/\r | |
697 | VOID\r | |
698 | CalculateCommonUserVariableTotalSize (\r | |
699 | VOID\r | |
700 | )\r | |
701 | {\r | |
702 | VARIABLE_HEADER *Variable;\r | |
703 | VARIABLE_HEADER *NextVariable;\r | |
704 | UINTN VariableSize;\r | |
705 | VAR_CHECK_VARIABLE_PROPERTY Property;\r | |
706 | \r | |
707 | //\r | |
708 | // Only after End Of Dxe, the variables belong to system variable are fixed.\r | |
709 | // If PcdMaxUserNvStorageVariableSize is 0, it means user variable share the same NV storage with system variable,\r | |
710 | // then no need to calculate the common user variable total size specially.\r | |
711 | //\r | |
712 | if (mEndOfDxe && (mVariableModuleGlobal->CommonMaxUserVariableSpace != mVariableModuleGlobal->CommonVariableSpace)) {\r | |
713 | Variable = GetStartPointer (mNvVariableCache);\r | |
714 | while (IsValidVariableHeader (Variable, GetEndPointer (mNvVariableCache))) {\r | |
715 | NextVariable = GetNextVariablePtr (Variable);\r | |
716 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
717 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
718 | if (InternalVarCheckVariablePropertyGet (GetVariableNamePtr (Variable), &Variable->VendorGuid, &Property) == EFI_NOT_FOUND) {\r | |
719 | //\r | |
720 | // No property, it is user variable.\r | |
721 | //\r | |
722 | mVariableModuleGlobal->CommonUserVariableTotalSize += VariableSize;\r | |
723 | }\r | |
724 | }\r | |
725 | \r | |
726 | Variable = NextVariable;\r | |
727 | }\r | |
728 | }\r | |
729 | }\r | |
730 | \r | |
731 | /**\r | |
732 | Initialize variable quota.\r | |
733 | \r | |
734 | **/\r | |
735 | VOID\r | |
736 | InitializeVariableQuota (\r | |
737 | VOID\r | |
738 | )\r | |
739 | {\r | |
740 | STATIC BOOLEAN Initialized;\r | |
741 | \r | |
742 | if (!mEndOfDxe || Initialized) {\r | |
743 | return;\r | |
744 | }\r | |
745 | Initialized = TRUE;\r | |
746 | \r | |
747 | InitializeVarErrorFlag ();\r | |
748 | CalculateCommonUserVariableTotalSize ();\r | |
749 | }\r | |
750 | \r | |
751 | /**\r | |
752 | \r | |
753 | Variable store garbage collection and reclaim operation.\r | |
754 | \r | |
755 | @param VariableBase Base address of variable store.\r | |
756 | @param LastVariableOffset Offset of last variable.\r | |
757 | @param IsVolatile The variable store is volatile or not;\r | |
758 | if it is non-volatile, need FTW.\r | |
759 | @param UpdatingPtrTrack Pointer to updating variable pointer track structure.\r | |
760 | @param NewVariable Pointer to new variable.\r | |
761 | @param NewVariableSize New variable size.\r | |
762 | \r | |
763 | @return EFI_OUT_OF_RESOURCES\r | |
764 | @return EFI_SUCCESS\r | |
765 | @return Others\r | |
766 | \r | |
767 | **/\r | |
768 | EFI_STATUS\r | |
769 | Reclaim (\r | |
770 | IN EFI_PHYSICAL_ADDRESS VariableBase,\r | |
771 | OUT UINTN *LastVariableOffset,\r | |
772 | IN BOOLEAN IsVolatile,\r | |
773 | IN OUT VARIABLE_POINTER_TRACK *UpdatingPtrTrack,\r | |
774 | IN VARIABLE_HEADER *NewVariable,\r | |
775 | IN UINTN NewVariableSize\r | |
776 | )\r | |
777 | {\r | |
778 | VARIABLE_HEADER *Variable;\r | |
779 | VARIABLE_HEADER *AddedVariable;\r | |
780 | VARIABLE_HEADER *NextVariable;\r | |
781 | VARIABLE_HEADER *NextAddedVariable;\r | |
782 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
783 | UINT8 *ValidBuffer;\r | |
784 | UINTN MaximumBufferSize;\r | |
785 | UINTN VariableSize;\r | |
786 | UINTN NameSize;\r | |
787 | UINT8 *CurrPtr;\r | |
788 | VOID *Point0;\r | |
789 | VOID *Point1;\r | |
790 | BOOLEAN FoundAdded;\r | |
791 | EFI_STATUS Status;\r | |
792 | UINTN CommonVariableTotalSize;\r | |
793 | UINTN CommonUserVariableTotalSize;\r | |
794 | UINTN HwErrVariableTotalSize;\r | |
795 | VARIABLE_HEADER *UpdatingVariable;\r | |
796 | VARIABLE_HEADER *UpdatingInDeletedTransition;\r | |
797 | \r | |
798 | UpdatingVariable = NULL;\r | |
799 | UpdatingInDeletedTransition = NULL;\r | |
800 | if (UpdatingPtrTrack != NULL) {\r | |
801 | UpdatingVariable = UpdatingPtrTrack->CurrPtr;\r | |
802 | UpdatingInDeletedTransition = UpdatingPtrTrack->InDeletedTransitionPtr;\r | |
803 | }\r | |
804 | \r | |
805 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r | |
806 | \r | |
807 | CommonVariableTotalSize = 0;\r | |
808 | CommonUserVariableTotalSize = 0;\r | |
809 | HwErrVariableTotalSize = 0;\r | |
810 | \r | |
811 | if (IsVolatile) {\r | |
812 | //\r | |
813 | // Start Pointers for the variable.\r | |
814 | //\r | |
815 | Variable = GetStartPointer (VariableStoreHeader);\r | |
816 | MaximumBufferSize = sizeof (VARIABLE_STORE_HEADER);\r | |
817 | \r | |
818 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r | |
819 | NextVariable = GetNextVariablePtr (Variable);\r | |
820 | if ((Variable->State == VAR_ADDED || Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) &&\r | |
821 | Variable != UpdatingVariable &&\r | |
822 | Variable != UpdatingInDeletedTransition\r | |
823 | ) {\r | |
824 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
825 | MaximumBufferSize += VariableSize;\r | |
826 | }\r | |
827 | \r | |
828 | Variable = NextVariable;\r | |
829 | }\r | |
830 | \r | |
831 | if (NewVariable != NULL) {\r | |
832 | //\r | |
833 | // Add the new variable size.\r | |
834 | //\r | |
835 | MaximumBufferSize += NewVariableSize;\r | |
836 | }\r | |
837 | \r | |
838 | //\r | |
839 | // Reserve the 1 Bytes with Oxff to identify the\r | |
840 | // end of the variable buffer.\r | |
841 | //\r | |
842 | MaximumBufferSize += 1;\r | |
843 | ValidBuffer = AllocatePool (MaximumBufferSize);\r | |
844 | if (ValidBuffer == NULL) {\r | |
845 | return EFI_OUT_OF_RESOURCES;\r | |
846 | }\r | |
847 | } else {\r | |
848 | //\r | |
849 | // For NV variable reclaim, don't allocate pool here and just use mNvVariableCache\r | |
850 | // as the buffer to reduce SMRAM consumption for SMM variable driver.\r | |
851 | //\r | |
852 | MaximumBufferSize = mNvVariableCache->Size;\r | |
853 | ValidBuffer = (UINT8 *) mNvVariableCache;\r | |
854 | }\r | |
855 | \r | |
856 | SetMem (ValidBuffer, MaximumBufferSize, 0xff);\r | |
857 | \r | |
858 | //\r | |
859 | // Copy variable store header.\r | |
860 | //\r | |
861 | CopyMem (ValidBuffer, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r | |
862 | CurrPtr = (UINT8 *) GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
863 | \r | |
864 | //\r | |
865 | // Reinstall all ADDED variables as long as they are not identical to Updating Variable.\r | |
866 | // \r | |
867 | Variable = GetStartPointer (VariableStoreHeader);\r | |
868 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r | |
869 | NextVariable = GetNextVariablePtr (Variable);\r | |
870 | if (Variable != UpdatingVariable && Variable->State == VAR_ADDED) {\r | |
871 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
872 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
873 | CurrPtr += VariableSize;\r | |
874 | if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
875 | HwErrVariableTotalSize += VariableSize;\r | |
876 | } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
877 | CommonVariableTotalSize += VariableSize;\r | |
878 | if (IsUserVariable (Variable)) {\r | |
879 | CommonUserVariableTotalSize += VariableSize;\r | |
880 | }\r | |
881 | }\r | |
882 | }\r | |
883 | Variable = NextVariable;\r | |
884 | }\r | |
885 | \r | |
886 | //\r | |
887 | // Reinstall all in delete transition variables.\r | |
888 | // \r | |
889 | Variable = GetStartPointer (VariableStoreHeader);\r | |
890 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r | |
891 | NextVariable = GetNextVariablePtr (Variable);\r | |
892 | if (Variable != UpdatingVariable && Variable != UpdatingInDeletedTransition && Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
893 | \r | |
894 | //\r | |
895 | // Buffer has cached all ADDED variable. \r | |
896 | // Per IN_DELETED variable, we have to guarantee that\r | |
897 | // no ADDED one in previous buffer. \r | |
898 | // \r | |
899 | \r | |
900 | FoundAdded = FALSE;\r | |
901 | AddedVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
902 | while (IsValidVariableHeader (AddedVariable, GetEndPointer ((VARIABLE_STORE_HEADER *) ValidBuffer))) {\r | |
903 | NextAddedVariable = GetNextVariablePtr (AddedVariable);\r | |
904 | NameSize = NameSizeOfVariable (AddedVariable);\r | |
905 | if (CompareGuid (&AddedVariable->VendorGuid, &Variable->VendorGuid) &&\r | |
906 | NameSize == NameSizeOfVariable (Variable)\r | |
907 | ) {\r | |
908 | Point0 = (VOID *) GetVariableNamePtr (AddedVariable);\r | |
909 | Point1 = (VOID *) GetVariableNamePtr (Variable);\r | |
910 | if (CompareMem (Point0, Point1, NameSize) == 0) {\r | |
911 | FoundAdded = TRUE;\r | |
912 | break;\r | |
913 | }\r | |
914 | }\r | |
915 | AddedVariable = NextAddedVariable;\r | |
916 | }\r | |
917 | if (!FoundAdded) {\r | |
918 | //\r | |
919 | // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED.\r | |
920 | //\r | |
921 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
922 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
923 | ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r | |
924 | CurrPtr += VariableSize;\r | |
925 | if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
926 | HwErrVariableTotalSize += VariableSize;\r | |
927 | } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
928 | CommonVariableTotalSize += VariableSize;\r | |
929 | if (IsUserVariable (Variable)) {\r | |
930 | CommonUserVariableTotalSize += VariableSize;\r | |
931 | }\r | |
932 | }\r | |
933 | }\r | |
934 | }\r | |
935 | \r | |
936 | Variable = NextVariable;\r | |
937 | }\r | |
938 | \r | |
939 | //\r | |
940 | // Install the new variable if it is not NULL.\r | |
941 | //\r | |
942 | if (NewVariable != NULL) {\r | |
943 | if ((UINTN) (CurrPtr - ValidBuffer) + NewVariableSize > VariableStoreHeader->Size) {\r | |
944 | //\r | |
945 | // No enough space to store the new variable.\r | |
946 | //\r | |
947 | Status = EFI_OUT_OF_RESOURCES;\r | |
948 | goto Done;\r | |
949 | }\r | |
950 | if (!IsVolatile) {\r | |
951 | if ((NewVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
952 | HwErrVariableTotalSize += NewVariableSize;\r | |
953 | } else if ((NewVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
954 | CommonVariableTotalSize += NewVariableSize;\r | |
955 | if (IsUserVariable (NewVariable)) {\r | |
956 | CommonUserVariableTotalSize += NewVariableSize;\r | |
957 | }\r | |
958 | }\r | |
959 | if ((HwErrVariableTotalSize > PcdGet32 (PcdHwErrStorageSize)) ||\r | |
960 | (CommonVariableTotalSize > mVariableModuleGlobal->CommonVariableSpace) ||\r | |
961 | (CommonUserVariableTotalSize > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r | |
962 | //\r | |
963 | // No enough space to store the new variable by NV or NV+HR attribute.\r | |
964 | //\r | |
965 | Status = EFI_OUT_OF_RESOURCES;\r | |
966 | goto Done;\r | |
967 | }\r | |
968 | }\r | |
969 | \r | |
970 | CopyMem (CurrPtr, (UINT8 *) NewVariable, NewVariableSize);\r | |
971 | ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r | |
972 | if (UpdatingVariable != NULL) {\r | |
973 | UpdatingPtrTrack->CurrPtr = (VARIABLE_HEADER *)((UINTN)UpdatingPtrTrack->StartPtr + ((UINTN)CurrPtr - (UINTN)GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer)));\r | |
974 | UpdatingPtrTrack->InDeletedTransitionPtr = NULL;\r | |
975 | }\r | |
976 | CurrPtr += NewVariableSize;\r | |
977 | }\r | |
978 | \r | |
979 | if (IsVolatile) {\r | |
980 | //\r | |
981 | // If volatile variable store, just copy valid buffer.\r | |
982 | //\r | |
983 | SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r | |
984 | CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) (CurrPtr - ValidBuffer));\r | |
985 | *LastVariableOffset = (UINTN) (CurrPtr - ValidBuffer);\r | |
986 | Status = EFI_SUCCESS;\r | |
987 | } else {\r | |
988 | //\r | |
989 | // If non-volatile variable store, perform FTW here.\r | |
990 | //\r | |
991 | Status = FtwVariableSpace (\r | |
992 | VariableBase,\r | |
993 | (VARIABLE_STORE_HEADER *) ValidBuffer\r | |
994 | );\r | |
995 | if (!EFI_ERROR (Status)) {\r | |
996 | *LastVariableOffset = (UINTN) (CurrPtr - ValidBuffer);\r | |
997 | mVariableModuleGlobal->HwErrVariableTotalSize = HwErrVariableTotalSize;\r | |
998 | mVariableModuleGlobal->CommonVariableTotalSize = CommonVariableTotalSize;\r | |
999 | mVariableModuleGlobal->CommonUserVariableTotalSize = CommonUserVariableTotalSize;\r | |
1000 | } else {\r | |
1001 | Variable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableBase);\r | |
1002 | while (IsValidVariableHeader (Variable, GetEndPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableBase))) {\r | |
1003 | NextVariable = GetNextVariablePtr (Variable);\r | |
1004 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
1005 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
1006 | mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r | |
1007 | } else if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
1008 | mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r | |
1009 | if (IsUserVariable (Variable)) {\r | |
1010 | mVariableModuleGlobal->CommonUserVariableTotalSize += VariableSize;\r | |
1011 | }\r | |
1012 | }\r | |
1013 | \r | |
1014 | Variable = NextVariable;\r | |
1015 | }\r | |
1016 | *LastVariableOffset = (UINTN) Variable - (UINTN) VariableBase;\r | |
1017 | }\r | |
1018 | }\r | |
1019 | \r | |
1020 | Done:\r | |
1021 | if (IsVolatile) {\r | |
1022 | FreePool (ValidBuffer);\r | |
1023 | } else {\r | |
1024 | //\r | |
1025 | // For NV variable reclaim, we use mNvVariableCache as the buffer, so copy the data back.\r | |
1026 | //\r | |
1027 | CopyMem (mNvVariableCache, (UINT8 *)(UINTN)VariableBase, VariableStoreHeader->Size);\r | |
1028 | }\r | |
1029 | \r | |
1030 | return Status;\r | |
1031 | }\r | |
1032 | \r | |
1033 | /**\r | |
1034 | Find the variable in the specified variable store.\r | |
1035 | \r | |
1036 | @param VariableName Name of the variable to be found\r | |
1037 | @param VendorGuid Vendor GUID to be found.\r | |
1038 | @param IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r | |
1039 | check at runtime when searching variable.\r | |
1040 | @param PtrTrack Variable Track Pointer structure that contains Variable Information.\r | |
1041 | \r | |
1042 | @retval EFI_SUCCESS Variable found successfully\r | |
1043 | @retval EFI_NOT_FOUND Variable not found\r | |
1044 | **/\r | |
1045 | EFI_STATUS\r | |
1046 | FindVariableEx (\r | |
1047 | IN CHAR16 *VariableName,\r | |
1048 | IN EFI_GUID *VendorGuid,\r | |
1049 | IN BOOLEAN IgnoreRtCheck,\r | |
1050 | IN OUT VARIABLE_POINTER_TRACK *PtrTrack\r | |
1051 | )\r | |
1052 | {\r | |
1053 | VARIABLE_HEADER *InDeletedVariable;\r | |
1054 | VOID *Point;\r | |
1055 | \r | |
1056 | PtrTrack->InDeletedTransitionPtr = NULL;\r | |
1057 | \r | |
1058 | //\r | |
1059 | // Find the variable by walk through HOB, volatile and non-volatile variable store.\r | |
1060 | //\r | |
1061 | InDeletedVariable = NULL;\r | |
1062 | \r | |
1063 | for ( PtrTrack->CurrPtr = PtrTrack->StartPtr\r | |
1064 | ; IsValidVariableHeader (PtrTrack->CurrPtr, PtrTrack->EndPtr)\r | |
1065 | ; PtrTrack->CurrPtr = GetNextVariablePtr (PtrTrack->CurrPtr)\r | |
1066 | ) {\r | |
1067 | if (PtrTrack->CurrPtr->State == VAR_ADDED || \r | |
1068 | PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r | |
1069 | ) {\r | |
1070 | if (IgnoreRtCheck || !AtRuntime () || ((PtrTrack->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r | |
1071 | if (VariableName[0] == 0) {\r | |
1072 | if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
1073 | InDeletedVariable = PtrTrack->CurrPtr;\r | |
1074 | } else {\r | |
1075 | PtrTrack->InDeletedTransitionPtr = InDeletedVariable;\r | |
1076 | return EFI_SUCCESS;\r | |
1077 | }\r | |
1078 | } else {\r | |
1079 | if (CompareGuid (VendorGuid, &PtrTrack->CurrPtr->VendorGuid)) {\r | |
1080 | Point = (VOID *) GetVariableNamePtr (PtrTrack->CurrPtr);\r | |
1081 | \r | |
1082 | ASSERT (NameSizeOfVariable (PtrTrack->CurrPtr) != 0);\r | |
1083 | if (CompareMem (VariableName, Point, NameSizeOfVariable (PtrTrack->CurrPtr)) == 0) {\r | |
1084 | if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
1085 | InDeletedVariable = PtrTrack->CurrPtr;\r | |
1086 | } else {\r | |
1087 | PtrTrack->InDeletedTransitionPtr = InDeletedVariable;\r | |
1088 | return EFI_SUCCESS;\r | |
1089 | }\r | |
1090 | }\r | |
1091 | }\r | |
1092 | }\r | |
1093 | }\r | |
1094 | }\r | |
1095 | }\r | |
1096 | \r | |
1097 | PtrTrack->CurrPtr = InDeletedVariable;\r | |
1098 | return (PtrTrack->CurrPtr == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;\r | |
1099 | }\r | |
1100 | \r | |
1101 | \r | |
1102 | /**\r | |
1103 | Finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
1104 | \r | |
1105 | This code finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
1106 | If VariableName is an empty string, then we just return the first\r | |
1107 | qualified variable without comparing VariableName and VendorGuid.\r | |
1108 | If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check\r | |
1109 | at runtime when searching existing variable, only VariableName and VendorGuid are compared.\r | |
1110 | Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.\r | |
1111 | \r | |
1112 | @param VariableName Name of the variable to be found.\r | |
1113 | @param VendorGuid Vendor GUID to be found.\r | |
1114 | @param PtrTrack VARIABLE_POINTER_TRACK structure for output,\r | |
1115 | including the range searched and the target position.\r | |
1116 | @param Global Pointer to VARIABLE_GLOBAL structure, including\r | |
1117 | base of volatile variable storage area, base of\r | |
1118 | NV variable storage area, and a lock.\r | |
1119 | @param IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r | |
1120 | check at runtime when searching variable.\r | |
1121 | \r | |
1122 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r | |
1123 | VendorGuid is NULL.\r | |
1124 | @retval EFI_SUCCESS Variable successfully found.\r | |
1125 | @retval EFI_NOT_FOUND Variable not found\r | |
1126 | \r | |
1127 | **/\r | |
1128 | EFI_STATUS\r | |
1129 | FindVariable (\r | |
1130 | IN CHAR16 *VariableName,\r | |
1131 | IN EFI_GUID *VendorGuid,\r | |
1132 | OUT VARIABLE_POINTER_TRACK *PtrTrack,\r | |
1133 | IN VARIABLE_GLOBAL *Global,\r | |
1134 | IN BOOLEAN IgnoreRtCheck\r | |
1135 | )\r | |
1136 | {\r | |
1137 | EFI_STATUS Status;\r | |
1138 | VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r | |
1139 | VARIABLE_STORE_TYPE Type;\r | |
1140 | \r | |
1141 | if (VariableName[0] != 0 && VendorGuid == NULL) {\r | |
1142 | return EFI_INVALID_PARAMETER;\r | |
1143 | }\r | |
1144 | \r | |
1145 | //\r | |
1146 | // 0: Volatile, 1: HOB, 2: Non-Volatile.\r | |
1147 | // The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName\r | |
1148 | // make use of this mapping to implement search algorithm.\r | |
1149 | //\r | |
1150 | VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) Global->VolatileVariableBase;\r | |
1151 | VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) Global->HobVariableBase;\r | |
1152 | VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r | |
1153 | \r | |
1154 | //\r | |
1155 | // Find the variable by walk through HOB, volatile and non-volatile variable store.\r | |
1156 | //\r | |
1157 | for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r | |
1158 | if (VariableStoreHeader[Type] == NULL) {\r | |
1159 | continue;\r | |
1160 | }\r | |
1161 | \r | |
1162 | PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r | |
1163 | PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r | |
1164 | PtrTrack->Volatile = (BOOLEAN) (Type == VariableStoreTypeVolatile);\r | |
1165 | \r | |
1166 | Status = FindVariableEx (VariableName, VendorGuid, IgnoreRtCheck, PtrTrack);\r | |
1167 | if (!EFI_ERROR (Status)) {\r | |
1168 | return Status;\r | |
1169 | }\r | |
1170 | }\r | |
1171 | return EFI_NOT_FOUND;\r | |
1172 | }\r | |
1173 | \r | |
1174 | /**\r | |
1175 | Get index from supported language codes according to language string.\r | |
1176 | \r | |
1177 | This code is used to get corresponding index in supported language codes. It can handle\r | |
1178 | RFC4646 and ISO639 language tags.\r | |
1179 | In ISO639 language tags, take 3-characters as a delimitation to find matched string and calculate the index.\r | |
1180 | In RFC4646 language tags, take semicolon as a delimitation to find matched string and calculate the index.\r | |
1181 | \r | |
1182 | For example:\r | |
1183 | SupportedLang = "engfraengfra"\r | |
1184 | Lang = "eng"\r | |
1185 | Iso639Language = TRUE\r | |
1186 | The return value is "0".\r | |
1187 | Another example:\r | |
1188 | SupportedLang = "en;fr;en-US;fr-FR"\r | |
1189 | Lang = "fr-FR"\r | |
1190 | Iso639Language = FALSE\r | |
1191 | The return value is "3".\r | |
1192 | \r | |
1193 | @param SupportedLang Platform supported language codes.\r | |
1194 | @param Lang Configured language.\r | |
1195 | @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r | |
1196 | \r | |
1197 | @retval The index of language in the language codes.\r | |
1198 | \r | |
1199 | **/\r | |
1200 | UINTN\r | |
1201 | GetIndexFromSupportedLangCodes(\r | |
1202 | IN CHAR8 *SupportedLang,\r | |
1203 | IN CHAR8 *Lang,\r | |
1204 | IN BOOLEAN Iso639Language\r | |
1205 | ) \r | |
1206 | {\r | |
1207 | UINTN Index;\r | |
1208 | UINTN CompareLength;\r | |
1209 | UINTN LanguageLength;\r | |
1210 | \r | |
1211 | if (Iso639Language) {\r | |
1212 | CompareLength = ISO_639_2_ENTRY_SIZE;\r | |
1213 | for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {\r | |
1214 | if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {\r | |
1215 | //\r | |
1216 | // Successfully find the index of Lang string in SupportedLang string.\r | |
1217 | //\r | |
1218 | Index = Index / CompareLength;\r | |
1219 | return Index;\r | |
1220 | }\r | |
1221 | }\r | |
1222 | ASSERT (FALSE);\r | |
1223 | return 0;\r | |
1224 | } else {\r | |
1225 | //\r | |
1226 | // Compare RFC4646 language code\r | |
1227 | //\r | |
1228 | Index = 0;\r | |
1229 | for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);\r | |
1230 | \r | |
1231 | for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang += CompareLength) {\r | |
1232 | //\r | |
1233 | // Skip ';' characters in SupportedLang\r | |
1234 | //\r | |
1235 | for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);\r | |
1236 | //\r | |
1237 | // Determine the length of the next language code in SupportedLang\r | |
1238 | //\r | |
1239 | for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);\r | |
1240 | \r | |
1241 | if ((CompareLength == LanguageLength) && \r | |
1242 | (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {\r | |
1243 | //\r | |
1244 | // Successfully find the index of Lang string in SupportedLang string.\r | |
1245 | //\r | |
1246 | return Index;\r | |
1247 | }\r | |
1248 | }\r | |
1249 | ASSERT (FALSE);\r | |
1250 | return 0;\r | |
1251 | }\r | |
1252 | }\r | |
1253 | \r | |
1254 | /**\r | |
1255 | Get language string from supported language codes according to index.\r | |
1256 | \r | |
1257 | This code is used to get corresponding language strings in supported language codes. It can handle\r | |
1258 | RFC4646 and ISO639 language tags.\r | |
1259 | In ISO639 language tags, take 3-characters as a delimitation. Find language string according to the index.\r | |
1260 | In RFC4646 language tags, take semicolon as a delimitation. Find language string according to the index.\r | |
1261 | \r | |
1262 | For example:\r | |
1263 | SupportedLang = "engfraengfra"\r | |
1264 | Index = "1"\r | |
1265 | Iso639Language = TRUE\r | |
1266 | The return value is "fra".\r | |
1267 | Another example:\r | |
1268 | SupportedLang = "en;fr;en-US;fr-FR"\r | |
1269 | Index = "1"\r | |
1270 | Iso639Language = FALSE\r | |
1271 | The return value is "fr".\r | |
1272 | \r | |
1273 | @param SupportedLang Platform supported language codes.\r | |
1274 | @param Index The index in supported language codes.\r | |
1275 | @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r | |
1276 | \r | |
1277 | @retval The language string in the language codes.\r | |
1278 | \r | |
1279 | **/\r | |
1280 | CHAR8 *\r | |
1281 | GetLangFromSupportedLangCodes (\r | |
1282 | IN CHAR8 *SupportedLang,\r | |
1283 | IN UINTN Index,\r | |
1284 | IN BOOLEAN Iso639Language\r | |
1285 | )\r | |
1286 | {\r | |
1287 | UINTN SubIndex;\r | |
1288 | UINTN CompareLength;\r | |
1289 | CHAR8 *Supported;\r | |
1290 | \r | |
1291 | SubIndex = 0;\r | |
1292 | Supported = SupportedLang;\r | |
1293 | if (Iso639Language) {\r | |
1294 | //\r | |
1295 | // According to the index of Lang string in SupportedLang string to get the language.\r | |
1296 | // This code will be invoked in RUNTIME, therefore there is not a memory allocate/free operation.\r | |
1297 | // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r | |
1298 | //\r | |
1299 | CompareLength = ISO_639_2_ENTRY_SIZE;\r | |
1300 | mVariableModuleGlobal->Lang[CompareLength] = '\0';\r | |
1301 | return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index * CompareLength, CompareLength);\r | |
1302 | \r | |
1303 | } else {\r | |
1304 | while (TRUE) {\r | |
1305 | //\r | |
1306 | // Take semicolon as delimitation, sequentially traverse supported language codes.\r | |
1307 | //\r | |
1308 | for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {\r | |
1309 | Supported++;\r | |
1310 | }\r | |
1311 | if ((*Supported == '\0') && (SubIndex != Index)) {\r | |
1312 | //\r | |
1313 | // Have completed the traverse, but not find corrsponding string.\r | |
1314 | // This case is not allowed to happen.\r | |
1315 | //\r | |
1316 | ASSERT(FALSE);\r | |
1317 | return NULL;\r | |
1318 | }\r | |
1319 | if (SubIndex == Index) {\r | |
1320 | //\r | |
1321 | // According to the index of Lang string in SupportedLang string to get the language.\r | |
1322 | // As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.\r | |
1323 | // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r | |
1324 | //\r | |
1325 | mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';\r | |
1326 | return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);\r | |
1327 | }\r | |
1328 | SubIndex++;\r | |
1329 | \r | |
1330 | //\r | |
1331 | // Skip ';' characters in Supported\r | |
1332 | //\r | |
1333 | for (; *Supported != '\0' && *Supported == ';'; Supported++);\r | |
1334 | }\r | |
1335 | }\r | |
1336 | }\r | |
1337 | \r | |
1338 | /**\r | |
1339 | Returns a pointer to an allocated buffer that contains the best matching language \r | |
1340 | from a set of supported languages. \r | |
1341 | \r | |
1342 | This function supports both ISO 639-2 and RFC 4646 language codes, but language \r | |
1343 | code types may not be mixed in a single call to this function. This function\r | |
1344 | supports a variable argument list that allows the caller to pass in a prioritized\r | |
1345 | list of language codes to test against all the language codes in SupportedLanguages.\r | |
1346 | \r | |
1347 | If SupportedLanguages is NULL, then ASSERT().\r | |
1348 | \r | |
1349 | @param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that\r | |
1350 | contains a set of language codes in the format \r | |
1351 | specified by Iso639Language.\r | |
1352 | @param[in] Iso639Language If TRUE, then all language codes are assumed to be\r | |
1353 | in ISO 639-2 format. If FALSE, then all language\r | |
1354 | codes are assumed to be in RFC 4646 language format\r | |
1355 | @param[in] ... A variable argument list that contains pointers to \r | |
1356 | Null-terminated ASCII strings that contain one or more\r | |
1357 | language codes in the format specified by Iso639Language.\r | |
1358 | The first language code from each of these language\r | |
1359 | code lists is used to determine if it is an exact or\r | |
1360 | close match to any of the language codes in \r | |
1361 | SupportedLanguages. Close matches only apply to RFC 4646\r | |
1362 | language codes, and the matching algorithm from RFC 4647\r | |
1363 | is used to determine if a close match is present. If \r | |
1364 | an exact or close match is found, then the matching\r | |
1365 | language code from SupportedLanguages is returned. If\r | |
1366 | no matches are found, then the next variable argument\r | |
1367 | parameter is evaluated. The variable argument list \r | |
1368 | is terminated by a NULL.\r | |
1369 | \r | |
1370 | @retval NULL The best matching language could not be found in SupportedLanguages.\r | |
1371 | @retval NULL There are not enough resources available to return the best matching \r | |
1372 | language.\r | |
1373 | @retval Other A pointer to a Null-terminated ASCII string that is the best matching \r | |
1374 | language in SupportedLanguages.\r | |
1375 | \r | |
1376 | **/\r | |
1377 | CHAR8 *\r | |
1378 | EFIAPI\r | |
1379 | VariableGetBestLanguage (\r | |
1380 | IN CONST CHAR8 *SupportedLanguages, \r | |
1381 | IN BOOLEAN Iso639Language,\r | |
1382 | ...\r | |
1383 | )\r | |
1384 | {\r | |
1385 | VA_LIST Args;\r | |
1386 | CHAR8 *Language;\r | |
1387 | UINTN CompareLength;\r | |
1388 | UINTN LanguageLength;\r | |
1389 | CONST CHAR8 *Supported;\r | |
1390 | CHAR8 *Buffer;\r | |
1391 | \r | |
1392 | ASSERT (SupportedLanguages != NULL);\r | |
1393 | \r | |
1394 | VA_START (Args, Iso639Language);\r | |
1395 | while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {\r | |
1396 | //\r | |
1397 | // Default to ISO 639-2 mode\r | |
1398 | //\r | |
1399 | CompareLength = 3;\r | |
1400 | LanguageLength = MIN (3, AsciiStrLen (Language));\r | |
1401 | \r | |
1402 | //\r | |
1403 | // If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language\r | |
1404 | //\r | |
1405 | if (!Iso639Language) {\r | |
1406 | for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);\r | |
1407 | }\r | |
1408 | \r | |
1409 | //\r | |
1410 | // Trim back the length of Language used until it is empty\r | |
1411 | //\r | |
1412 | while (LanguageLength > 0) {\r | |
1413 | //\r | |
1414 | // Loop through all language codes in SupportedLanguages\r | |
1415 | //\r | |
1416 | for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {\r | |
1417 | //\r | |
1418 | // In RFC 4646 mode, then Loop through all language codes in SupportedLanguages\r | |
1419 | //\r | |
1420 | if (!Iso639Language) {\r | |
1421 | //\r | |
1422 | // Skip ';' characters in Supported\r | |
1423 | //\r | |
1424 | for (; *Supported != '\0' && *Supported == ';'; Supported++);\r | |
1425 | //\r | |
1426 | // Determine the length of the next language code in Supported\r | |
1427 | //\r | |
1428 | for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);\r | |
1429 | //\r | |
1430 | // If Language is longer than the Supported, then skip to the next language\r | |
1431 | //\r | |
1432 | if (LanguageLength > CompareLength) {\r | |
1433 | continue;\r | |
1434 | }\r | |
1435 | }\r | |
1436 | //\r | |
1437 | // See if the first LanguageLength characters in Supported match Language\r | |
1438 | //\r | |
1439 | if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {\r | |
1440 | VA_END (Args);\r | |
1441 | \r | |
1442 | Buffer = Iso639Language ? mVariableModuleGlobal->Lang : mVariableModuleGlobal->PlatformLang;\r | |
1443 | Buffer[CompareLength] = '\0';\r | |
1444 | return CopyMem (Buffer, Supported, CompareLength);\r | |
1445 | }\r | |
1446 | }\r | |
1447 | \r | |
1448 | if (Iso639Language) {\r | |
1449 | //\r | |
1450 | // If ISO 639 mode, then each language can only be tested once\r | |
1451 | //\r | |
1452 | LanguageLength = 0;\r | |
1453 | } else {\r | |
1454 | //\r | |
1455 | // If RFC 4646 mode, then trim Language from the right to the next '-' character \r | |
1456 | //\r | |
1457 | for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);\r | |
1458 | }\r | |
1459 | }\r | |
1460 | }\r | |
1461 | VA_END (Args);\r | |
1462 | \r | |
1463 | //\r | |
1464 | // No matches were found \r | |
1465 | //\r | |
1466 | return NULL;\r | |
1467 | }\r | |
1468 | \r | |
1469 | /**\r | |
1470 | This function is to check if the remaining variable space is enough to set\r | |
1471 | all Variables from argument list successfully. The purpose of the check\r | |
1472 | is to keep the consistency of the Variables to be in variable storage.\r | |
1473 | \r | |
1474 | Note: Variables are assumed to be in same storage.\r | |
1475 | The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r | |
1476 | so follow the argument sequence to check the Variables.\r | |
1477 | \r | |
1478 | @param[in] Attributes Variable attributes for Variable entries.\r | |
1479 | @param ... The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r | |
1480 | A NULL terminates the list. The VariableSize of \r | |
1481 | VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r | |
1482 | It will be changed to variable total size as output.\r | |
1483 | \r | |
1484 | @retval TRUE Have enough variable space to set the Variables successfully.\r | |
1485 | @retval FALSE No enough variable space to set the Variables successfully.\r | |
1486 | \r | |
1487 | **/\r | |
1488 | BOOLEAN\r | |
1489 | EFIAPI\r | |
1490 | CheckRemainingSpaceForConsistency (\r | |
1491 | IN UINT32 Attributes,\r | |
1492 | ...\r | |
1493 | )\r | |
1494 | {\r | |
1495 | EFI_STATUS Status;\r | |
1496 | VA_LIST Args;\r | |
1497 | VARIABLE_ENTRY_CONSISTENCY *VariableEntry;\r | |
1498 | UINT64 MaximumVariableStorageSize;\r | |
1499 | UINT64 RemainingVariableStorageSize;\r | |
1500 | UINT64 MaximumVariableSize;\r | |
1501 | UINTN TotalNeededSize;\r | |
1502 | UINTN OriginalVarSize;\r | |
1503 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
1504 | VARIABLE_POINTER_TRACK VariablePtrTrack;\r | |
1505 | VARIABLE_HEADER *NextVariable;\r | |
1506 | UINTN VarNameSize;\r | |
1507 | UINTN VarDataSize;\r | |
1508 | \r | |
1509 | //\r | |
1510 | // Non-Volatile related.\r | |
1511 | //\r | |
1512 | VariableStoreHeader = mNvVariableCache;\r | |
1513 | \r | |
1514 | Status = VariableServiceQueryVariableInfoInternal (\r | |
1515 | Attributes,\r | |
1516 | &MaximumVariableStorageSize,\r | |
1517 | &RemainingVariableStorageSize,\r | |
1518 | &MaximumVariableSize\r | |
1519 | );\r | |
1520 | ASSERT_EFI_ERROR (Status);\r | |
1521 | \r | |
1522 | TotalNeededSize = 0;\r | |
1523 | VA_START (Args, Attributes);\r | |
1524 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r | |
1525 | while (VariableEntry != NULL) {\r | |
1526 | //\r | |
1527 | // Calculate variable total size.\r | |
1528 | //\r | |
1529 | VarNameSize = StrSize (VariableEntry->Name);\r | |
1530 | VarNameSize += GET_PAD_SIZE (VarNameSize);\r | |
1531 | VarDataSize = VariableEntry->VariableSize;\r | |
1532 | VarDataSize += GET_PAD_SIZE (VarDataSize);\r | |
1533 | VariableEntry->VariableSize = HEADER_ALIGN (sizeof (VARIABLE_HEADER) + VarNameSize + VarDataSize);\r | |
1534 | \r | |
1535 | TotalNeededSize += VariableEntry->VariableSize;\r | |
1536 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r | |
1537 | }\r | |
1538 | VA_END (Args);\r | |
1539 | \r | |
1540 | if (RemainingVariableStorageSize >= TotalNeededSize) {\r | |
1541 | //\r | |
1542 | // Already have enough space.\r | |
1543 | //\r | |
1544 | return TRUE;\r | |
1545 | } else if (AtRuntime ()) {\r | |
1546 | //\r | |
1547 | // At runtime, no reclaim.\r | |
1548 | // The original variable space of Variables can't be reused.\r | |
1549 | //\r | |
1550 | return FALSE;\r | |
1551 | }\r | |
1552 | \r | |
1553 | VA_START (Args, Attributes);\r | |
1554 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r | |
1555 | while (VariableEntry != NULL) {\r | |
1556 | //\r | |
1557 | // Check if Variable[Index] has been present and get its size.\r | |
1558 | //\r | |
1559 | OriginalVarSize = 0;\r | |
1560 | VariablePtrTrack.StartPtr = GetStartPointer (VariableStoreHeader);\r | |
1561 | VariablePtrTrack.EndPtr = GetEndPointer (VariableStoreHeader);\r | |
1562 | Status = FindVariableEx (\r | |
1563 | VariableEntry->Name,\r | |
1564 | VariableEntry->Guid,\r | |
1565 | FALSE,\r | |
1566 | &VariablePtrTrack\r | |
1567 | );\r | |
1568 | if (!EFI_ERROR (Status)) {\r | |
1569 | //\r | |
1570 | // Get size of Variable[Index].\r | |
1571 | //\r | |
1572 | NextVariable = GetNextVariablePtr (VariablePtrTrack.CurrPtr);\r | |
1573 | OriginalVarSize = (UINTN) NextVariable - (UINTN) VariablePtrTrack.CurrPtr;\r | |
1574 | //\r | |
1575 | // Add the original size of Variable[Index] to remaining variable storage size.\r | |
1576 | //\r | |
1577 | RemainingVariableStorageSize += OriginalVarSize;\r | |
1578 | }\r | |
1579 | if (VariableEntry->VariableSize > RemainingVariableStorageSize) {\r | |
1580 | //\r | |
1581 | // No enough space for Variable[Index].\r | |
1582 | //\r | |
1583 | VA_END (Args);\r | |
1584 | return FALSE;\r | |
1585 | }\r | |
1586 | //\r | |
1587 | // Sub the (new) size of Variable[Index] from remaining variable storage size.\r | |
1588 | //\r | |
1589 | RemainingVariableStorageSize -= VariableEntry->VariableSize;\r | |
1590 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r | |
1591 | }\r | |
1592 | VA_END (Args);\r | |
1593 | \r | |
1594 | return TRUE;\r | |
1595 | }\r | |
1596 | \r | |
1597 | /**\r | |
1598 | Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.\r | |
1599 | \r | |
1600 | When setting Lang/LangCodes, simultaneously update PlatformLang/PlatformLangCodes.\r | |
1601 | \r | |
1602 | According to UEFI spec, PlatformLangCodes/LangCodes are only set once in firmware initialization,\r | |
1603 | and are read-only. Therefore, in variable driver, only store the original value for other use.\r | |
1604 | \r | |
1605 | @param[in] VariableName Name of variable.\r | |
1606 | \r | |
1607 | @param[in] Data Variable data.\r | |
1608 | \r | |
1609 | @param[in] DataSize Size of data. 0 means delete.\r | |
1610 | \r | |
1611 | @retval EFI_SUCCESS The update operation is successful or ignored.\r | |
1612 | @retval EFI_WRITE_PROTECTED Update PlatformLangCodes/LangCodes at runtime.\r | |
1613 | @retval EFI_OUT_OF_RESOURCES No enough variable space to do the update operation.\r | |
1614 | @retval Others Other errors happened during the update operation.\r | |
1615 | \r | |
1616 | **/\r | |
1617 | EFI_STATUS\r | |
1618 | AutoUpdateLangVariable (\r | |
1619 | IN CHAR16 *VariableName,\r | |
1620 | IN VOID *Data,\r | |
1621 | IN UINTN DataSize\r | |
1622 | )\r | |
1623 | {\r | |
1624 | EFI_STATUS Status;\r | |
1625 | CHAR8 *BestPlatformLang;\r | |
1626 | CHAR8 *BestLang;\r | |
1627 | UINTN Index;\r | |
1628 | UINT32 Attributes;\r | |
1629 | VARIABLE_POINTER_TRACK Variable;\r | |
1630 | BOOLEAN SetLanguageCodes;\r | |
1631 | VARIABLE_ENTRY_CONSISTENCY VariableEntry[2];\r | |
1632 | \r | |
1633 | //\r | |
1634 | // Don't do updates for delete operation\r | |
1635 | //\r | |
1636 | if (DataSize == 0) {\r | |
1637 | return EFI_SUCCESS;\r | |
1638 | }\r | |
1639 | \r | |
1640 | SetLanguageCodes = FALSE;\r | |
1641 | \r | |
1642 | if (StrCmp (VariableName, EFI_PLATFORM_LANG_CODES_VARIABLE_NAME) == 0) {\r | |
1643 | //\r | |
1644 | // PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r | |
1645 | //\r | |
1646 | if (AtRuntime ()) {\r | |
1647 | return EFI_WRITE_PROTECTED;\r | |
1648 | }\r | |
1649 | \r | |
1650 | SetLanguageCodes = TRUE;\r | |
1651 | \r | |
1652 | //\r | |
1653 | // According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only\r | |
1654 | // Therefore, in variable driver, only store the original value for other use.\r | |
1655 | //\r | |
1656 | if (mVariableModuleGlobal->PlatformLangCodes != NULL) {\r | |
1657 | FreePool (mVariableModuleGlobal->PlatformLangCodes);\r | |
1658 | }\r | |
1659 | mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r | |
1660 | ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);\r | |
1661 | \r | |
1662 | //\r | |
1663 | // PlatformLang holds a single language from PlatformLangCodes, \r | |
1664 | // so the size of PlatformLangCodes is enough for the PlatformLang.\r | |
1665 | //\r | |
1666 | if (mVariableModuleGlobal->PlatformLang != NULL) {\r | |
1667 | FreePool (mVariableModuleGlobal->PlatformLang);\r | |
1668 | }\r | |
1669 | mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);\r | |
1670 | ASSERT (mVariableModuleGlobal->PlatformLang != NULL);\r | |
1671 | \r | |
1672 | } else if (StrCmp (VariableName, EFI_LANG_CODES_VARIABLE_NAME) == 0) {\r | |
1673 | //\r | |
1674 | // LangCodes is a volatile variable, so it can not be updated at runtime.\r | |
1675 | //\r | |
1676 | if (AtRuntime ()) {\r | |
1677 | return EFI_WRITE_PROTECTED;\r | |
1678 | }\r | |
1679 | \r | |
1680 | SetLanguageCodes = TRUE;\r | |
1681 | \r | |
1682 | //\r | |
1683 | // According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only\r | |
1684 | // Therefore, in variable driver, only store the original value for other use.\r | |
1685 | //\r | |
1686 | if (mVariableModuleGlobal->LangCodes != NULL) {\r | |
1687 | FreePool (mVariableModuleGlobal->LangCodes);\r | |
1688 | }\r | |
1689 | mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r | |
1690 | ASSERT (mVariableModuleGlobal->LangCodes != NULL);\r | |
1691 | }\r | |
1692 | \r | |
1693 | if (SetLanguageCodes \r | |
1694 | && (mVariableModuleGlobal->PlatformLangCodes != NULL)\r | |
1695 | && (mVariableModuleGlobal->LangCodes != NULL)) {\r | |
1696 | //\r | |
1697 | // Update Lang if PlatformLang is already set\r | |
1698 | // Update PlatformLang if Lang is already set\r | |
1699 | //\r | |
1700 | Status = FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
1701 | if (!EFI_ERROR (Status)) {\r | |
1702 | //\r | |
1703 | // Update Lang\r | |
1704 | //\r | |
1705 | VariableName = EFI_PLATFORM_LANG_VARIABLE_NAME;\r | |
1706 | Data = GetVariableDataPtr (Variable.CurrPtr);\r | |
1707 | DataSize = Variable.CurrPtr->DataSize;\r | |
1708 | } else {\r | |
1709 | Status = FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
1710 | if (!EFI_ERROR (Status)) {\r | |
1711 | //\r | |
1712 | // Update PlatformLang\r | |
1713 | //\r | |
1714 | VariableName = EFI_LANG_VARIABLE_NAME;\r | |
1715 | Data = GetVariableDataPtr (Variable.CurrPtr);\r | |
1716 | DataSize = Variable.CurrPtr->DataSize;\r | |
1717 | } else {\r | |
1718 | //\r | |
1719 | // Neither PlatformLang nor Lang is set, directly return\r | |
1720 | //\r | |
1721 | return EFI_SUCCESS;\r | |
1722 | }\r | |
1723 | }\r | |
1724 | }\r | |
1725 | \r | |
1726 | Status = EFI_SUCCESS;\r | |
1727 | \r | |
1728 | //\r | |
1729 | // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.\r | |
1730 | //\r | |
1731 | Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r | |
1732 | \r | |
1733 | if (StrCmp (VariableName, EFI_PLATFORM_LANG_VARIABLE_NAME) == 0) {\r | |
1734 | //\r | |
1735 | // Update Lang when PlatformLangCodes/LangCodes were set.\r | |
1736 | //\r | |
1737 | if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r | |
1738 | //\r | |
1739 | // When setting PlatformLang, firstly get most matched language string from supported language codes.\r | |
1740 | //\r | |
1741 | BestPlatformLang = VariableGetBestLanguage (mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);\r | |
1742 | if (BestPlatformLang != NULL) {\r | |
1743 | //\r | |
1744 | // Get the corresponding index in language codes.\r | |
1745 | //\r | |
1746 | Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, BestPlatformLang, FALSE);\r | |
1747 | \r | |
1748 | //\r | |
1749 | // Get the corresponding ISO639 language tag according to RFC4646 language tag.\r | |
1750 | //\r | |
1751 | BestLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, Index, TRUE);\r | |
1752 | \r | |
1753 | //\r | |
1754 | // Check the variable space for both Lang and PlatformLang variable.\r | |
1755 | //\r | |
1756 | VariableEntry[0].VariableSize = ISO_639_2_ENTRY_SIZE + 1;\r | |
1757 | VariableEntry[0].Guid = &gEfiGlobalVariableGuid;\r | |
1758 | VariableEntry[0].Name = EFI_LANG_VARIABLE_NAME;\r | |
1759 | \r | |
1760 | VariableEntry[1].VariableSize = AsciiStrSize (BestPlatformLang);\r | |
1761 | VariableEntry[1].Guid = &gEfiGlobalVariableGuid;\r | |
1762 | VariableEntry[1].Name = EFI_PLATFORM_LANG_VARIABLE_NAME;\r | |
1763 | if (!CheckRemainingSpaceForConsistency (VARIABLE_ATTRIBUTE_NV_BS_RT, &VariableEntry[0], &VariableEntry[1], NULL)) {\r | |
1764 | //\r | |
1765 | // No enough variable space to set both Lang and PlatformLang successfully.\r | |
1766 | //\r | |
1767 | Status = EFI_OUT_OF_RESOURCES;\r | |
1768 | } else {\r | |
1769 | //\r | |
1770 | // Successfully convert PlatformLang to Lang, and set the BestLang value into Lang variable simultaneously.\r | |
1771 | //\r | |
1772 | FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
1773 | \r | |
1774 | Status = UpdateVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestLang,\r | |
1775 | ISO_639_2_ENTRY_SIZE + 1, Attributes, &Variable);\r | |
1776 | }\r | |
1777 | \r | |
1778 | DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a Status: %r\n", BestPlatformLang, BestLang, Status));\r | |
1779 | }\r | |
1780 | }\r | |
1781 | \r | |
1782 | } else if (StrCmp (VariableName, EFI_LANG_VARIABLE_NAME) == 0) {\r | |
1783 | //\r | |
1784 | // Update PlatformLang when PlatformLangCodes/LangCodes were set.\r | |
1785 | //\r | |
1786 | if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r | |
1787 | //\r | |
1788 | // When setting Lang, firstly get most matched language string from supported language codes.\r | |
1789 | //\r | |
1790 | BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);\r | |
1791 | if (BestLang != NULL) {\r | |
1792 | //\r | |
1793 | // Get the corresponding index in language codes.\r | |
1794 | //\r | |
1795 | Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, BestLang, TRUE);\r | |
1796 | \r | |
1797 | //\r | |
1798 | // Get the corresponding RFC4646 language tag according to ISO639 language tag.\r | |
1799 | //\r | |
1800 | BestPlatformLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, Index, FALSE);\r | |
1801 | \r | |
1802 | //\r | |
1803 | // Check the variable space for both PlatformLang and Lang variable.\r | |
1804 | //\r | |
1805 | VariableEntry[0].VariableSize = AsciiStrSize (BestPlatformLang);\r | |
1806 | VariableEntry[0].Guid = &gEfiGlobalVariableGuid;\r | |
1807 | VariableEntry[0].Name = EFI_PLATFORM_LANG_VARIABLE_NAME;\r | |
1808 | \r | |
1809 | VariableEntry[1].VariableSize = ISO_639_2_ENTRY_SIZE + 1;\r | |
1810 | VariableEntry[1].Guid = &gEfiGlobalVariableGuid;\r | |
1811 | VariableEntry[1].Name = EFI_LANG_VARIABLE_NAME;\r | |
1812 | if (!CheckRemainingSpaceForConsistency (VARIABLE_ATTRIBUTE_NV_BS_RT, &VariableEntry[0], &VariableEntry[1], NULL)) {\r | |
1813 | //\r | |
1814 | // No enough variable space to set both PlatformLang and Lang successfully.\r | |
1815 | //\r | |
1816 | Status = EFI_OUT_OF_RESOURCES;\r | |
1817 | } else {\r | |
1818 | //\r | |
1819 | // Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.\r | |
1820 | //\r | |
1821 | FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
1822 | \r | |
1823 | Status = UpdateVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestPlatformLang, \r | |
1824 | AsciiStrSize (BestPlatformLang), Attributes, &Variable);\r | |
1825 | }\r | |
1826 | \r | |
1827 | DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a Status: %r\n", BestLang, BestPlatformLang, Status));\r | |
1828 | }\r | |
1829 | }\r | |
1830 | }\r | |
1831 | \r | |
1832 | if (SetLanguageCodes) {\r | |
1833 | //\r | |
1834 | // Continue to set PlatformLangCodes or LangCodes.\r | |
1835 | //\r | |
1836 | return EFI_SUCCESS;\r | |
1837 | } else {\r | |
1838 | return Status;\r | |
1839 | }\r | |
1840 | }\r | |
1841 | \r | |
1842 | /**\r | |
1843 | Update the variable region with Variable information. These are the same \r | |
1844 | arguments as the EFI Variable services.\r | |
1845 | \r | |
1846 | @param[in] VariableName Name of variable.\r | |
1847 | @param[in] VendorGuid Guid of variable.\r | |
1848 | @param[in] Data Variable data.\r | |
1849 | @param[in] DataSize Size of data. 0 means delete.\r | |
1850 | @param[in] Attributes Attribues of the variable.\r | |
1851 | @param[in, out] CacheVariable The variable information which is used to keep track of variable usage.\r | |
1852 | \r | |
1853 | @retval EFI_SUCCESS The update operation is success.\r | |
1854 | @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other data into this region.\r | |
1855 | \r | |
1856 | **/\r | |
1857 | EFI_STATUS\r | |
1858 | UpdateVariable (\r | |
1859 | IN CHAR16 *VariableName,\r | |
1860 | IN EFI_GUID *VendorGuid,\r | |
1861 | IN VOID *Data,\r | |
1862 | IN UINTN DataSize,\r | |
1863 | IN UINT32 Attributes OPTIONAL,\r | |
1864 | IN OUT VARIABLE_POINTER_TRACK *CacheVariable\r | |
1865 | )\r | |
1866 | {\r | |
1867 | EFI_STATUS Status;\r | |
1868 | VARIABLE_HEADER *NextVariable;\r | |
1869 | UINTN ScratchSize;\r | |
1870 | UINTN VarNameOffset;\r | |
1871 | UINTN VarDataOffset;\r | |
1872 | UINTN VarNameSize;\r | |
1873 | UINTN VarSize;\r | |
1874 | BOOLEAN Volatile;\r | |
1875 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
1876 | UINT8 State;\r | |
1877 | VARIABLE_POINTER_TRACK *Variable;\r | |
1878 | VARIABLE_POINTER_TRACK NvVariable;\r | |
1879 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
1880 | UINTN CacheOffset;\r | |
1881 | BOOLEAN IsCommonVariable;\r | |
1882 | BOOLEAN IsCommonUserVariable;\r | |
1883 | \r | |
1884 | if ((mVariableModuleGlobal->FvbInstance == NULL) && ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0)) {\r | |
1885 | //\r | |
1886 | // The FVB protocol is not ready. Trying to update NV variable prior to the installation\r | |
1887 | // of EFI_VARIABLE_WRITE_ARCH_PROTOCOL.\r | |
1888 | //\r | |
1889 | return EFI_NOT_AVAILABLE_YET; \r | |
1890 | }\r | |
1891 | \r | |
1892 | if ((CacheVariable->CurrPtr == NULL) || CacheVariable->Volatile) {\r | |
1893 | Variable = CacheVariable;\r | |
1894 | } else {\r | |
1895 | //\r | |
1896 | // Update/Delete existing NV variable.\r | |
1897 | // CacheVariable points to the variable in the memory copy of Flash area\r | |
1898 | // Now let Variable points to the same variable in Flash area.\r | |
1899 | //\r | |
1900 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r | |
1901 | Variable = &NvVariable; \r | |
1902 | Variable->StartPtr = GetStartPointer (VariableStoreHeader);\r | |
1903 | Variable->EndPtr = GetEndPointer (VariableStoreHeader);\r | |
1904 | Variable->CurrPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->CurrPtr - (UINTN)CacheVariable->StartPtr));\r | |
1905 | if (CacheVariable->InDeletedTransitionPtr != NULL) {\r | |
1906 | Variable->InDeletedTransitionPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->InDeletedTransitionPtr - (UINTN)CacheVariable->StartPtr));\r | |
1907 | } else {\r | |
1908 | Variable->InDeletedTransitionPtr = NULL;\r | |
1909 | }\r | |
1910 | Variable->Volatile = FALSE;\r | |
1911 | } \r | |
1912 | \r | |
1913 | Fvb = mVariableModuleGlobal->FvbInstance;\r | |
1914 | \r | |
1915 | if (Variable->CurrPtr != NULL) {\r | |
1916 | //\r | |
1917 | // Update/Delete existing variable.\r | |
1918 | //\r | |
1919 | if (AtRuntime ()) { \r | |
1920 | //\r | |
1921 | // If AtRuntime and the variable is Volatile and Runtime Access, \r | |
1922 | // the volatile is ReadOnly, and SetVariable should be aborted and \r | |
1923 | // return EFI_WRITE_PROTECTED.\r | |
1924 | //\r | |
1925 | if (Variable->Volatile) {\r | |
1926 | Status = EFI_WRITE_PROTECTED;\r | |
1927 | goto Done;\r | |
1928 | }\r | |
1929 | //\r | |
1930 | // Only variable that have NV|RT attributes can be updated/deleted in Runtime.\r | |
1931 | //\r | |
1932 | if (((Variable->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Variable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0)) {\r | |
1933 | Status = EFI_INVALID_PARAMETER;\r | |
1934 | goto Done; \r | |
1935 | }\r | |
1936 | }\r | |
1937 | \r | |
1938 | //\r | |
1939 | // Setting a data variable with no access, or zero DataSize attributes\r | |
1940 | // causes it to be deleted.\r | |
1941 | //\r | |
1942 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) { \r | |
1943 | if (Variable->InDeletedTransitionPtr != NULL) {\r | |
1944 | //\r | |
1945 | // Both ADDED and IN_DELETED_TRANSITION variable are present,\r | |
1946 | // set IN_DELETED_TRANSITION one to DELETED state first.\r | |
1947 | //\r | |
1948 | State = Variable->InDeletedTransitionPtr->State;\r | |
1949 | State &= VAR_DELETED;\r | |
1950 | Status = UpdateVariableStore (\r | |
1951 | &mVariableModuleGlobal->VariableGlobal,\r | |
1952 | Variable->Volatile,\r | |
1953 | FALSE,\r | |
1954 | Fvb,\r | |
1955 | (UINTN) &Variable->InDeletedTransitionPtr->State,\r | |
1956 | sizeof (UINT8),\r | |
1957 | &State\r | |
1958 | );\r | |
1959 | if (!EFI_ERROR (Status)) {\r | |
1960 | if (!Variable->Volatile) {\r | |
1961 | ASSERT (CacheVariable->InDeletedTransitionPtr != NULL);\r | |
1962 | CacheVariable->InDeletedTransitionPtr->State = State;\r | |
1963 | }\r | |
1964 | } else {\r | |
1965 | goto Done;\r | |
1966 | }\r | |
1967 | }\r | |
1968 | \r | |
1969 | State = Variable->CurrPtr->State;\r | |
1970 | State &= VAR_DELETED;\r | |
1971 | \r | |
1972 | Status = UpdateVariableStore (\r | |
1973 | &mVariableModuleGlobal->VariableGlobal,\r | |
1974 | Variable->Volatile,\r | |
1975 | FALSE,\r | |
1976 | Fvb,\r | |
1977 | (UINTN) &Variable->CurrPtr->State,\r | |
1978 | sizeof (UINT8),\r | |
1979 | &State\r | |
1980 | ); \r | |
1981 | if (!EFI_ERROR (Status)) {\r | |
1982 | UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, FALSE, TRUE, FALSE);\r | |
1983 | if (!Variable->Volatile) {\r | |
1984 | CacheVariable->CurrPtr->State = State;\r | |
1985 | FlushHobVariableToFlash (VariableName, VendorGuid);\r | |
1986 | }\r | |
1987 | }\r | |
1988 | goto Done; \r | |
1989 | }\r | |
1990 | //\r | |
1991 | // If the variable is marked valid, and the same data has been passed in,\r | |
1992 | // then return to the caller immediately.\r | |
1993 | //\r | |
1994 | if (DataSizeOfVariable (Variable->CurrPtr) == DataSize &&\r | |
1995 | (CompareMem (Data, GetVariableDataPtr (Variable->CurrPtr), DataSize) == 0)) {\r | |
1996 | \r | |
1997 | UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);\r | |
1998 | Status = EFI_SUCCESS;\r | |
1999 | goto Done;\r | |
2000 | } else if ((Variable->CurrPtr->State == VAR_ADDED) ||\r | |
2001 | (Variable->CurrPtr->State == (VAR_ADDED & VAR_IN_DELETED_TRANSITION))) {\r | |
2002 | \r | |
2003 | //\r | |
2004 | // Mark the old variable as in delete transition.\r | |
2005 | //\r | |
2006 | State = Variable->CurrPtr->State;\r | |
2007 | State &= VAR_IN_DELETED_TRANSITION;\r | |
2008 | \r | |
2009 | Status = UpdateVariableStore (\r | |
2010 | &mVariableModuleGlobal->VariableGlobal,\r | |
2011 | Variable->Volatile,\r | |
2012 | FALSE,\r | |
2013 | Fvb,\r | |
2014 | (UINTN) &Variable->CurrPtr->State,\r | |
2015 | sizeof (UINT8),\r | |
2016 | &State\r | |
2017 | ); \r | |
2018 | if (EFI_ERROR (Status)) {\r | |
2019 | goto Done; \r | |
2020 | } \r | |
2021 | if (!Variable->Volatile) {\r | |
2022 | CacheVariable->CurrPtr->State = State;\r | |
2023 | }\r | |
2024 | } \r | |
2025 | } else {\r | |
2026 | //\r | |
2027 | // Not found existing variable. Create a new variable.\r | |
2028 | // \r | |
2029 | \r | |
2030 | //\r | |
2031 | // Make sure we are trying to create a new variable.\r | |
2032 | // Setting a data variable with zero DataSize or no access attributes means to delete it. \r | |
2033 | //\r | |
2034 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r | |
2035 | Status = EFI_NOT_FOUND;\r | |
2036 | goto Done;\r | |
2037 | }\r | |
2038 | \r | |
2039 | //\r | |
2040 | // Only variable have NV|RT attribute can be created in Runtime.\r | |
2041 | //\r | |
2042 | if (AtRuntime () &&\r | |
2043 | (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r | |
2044 | Status = EFI_INVALID_PARAMETER;\r | |
2045 | goto Done;\r | |
2046 | } \r | |
2047 | }\r | |
2048 | \r | |
2049 | //\r | |
2050 | // Function part - create a new variable and copy the data.\r | |
2051 | // Both update a variable and create a variable will come here.\r | |
2052 | \r | |
2053 | //\r | |
2054 | // Tricky part: Use scratch data area at the end of volatile variable store\r | |
2055 | // as a temporary storage.\r | |
2056 | //\r | |
2057 | NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));\r | |
2058 | ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32 (PcdMaxHardwareErrorVariableSize));\r | |
2059 | \r | |
2060 | SetMem (NextVariable, ScratchSize, 0xff);\r | |
2061 | \r | |
2062 | NextVariable->StartId = VARIABLE_DATA;\r | |
2063 | NextVariable->Attributes = Attributes;\r | |
2064 | //\r | |
2065 | // NextVariable->State = VAR_ADDED;\r | |
2066 | //\r | |
2067 | NextVariable->Reserved = 0;\r | |
2068 | VarNameOffset = sizeof (VARIABLE_HEADER);\r | |
2069 | VarNameSize = StrSize (VariableName);\r | |
2070 | CopyMem (\r | |
2071 | (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r | |
2072 | VariableName,\r | |
2073 | VarNameSize\r | |
2074 | );\r | |
2075 | VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r | |
2076 | CopyMem (\r | |
2077 | (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r | |
2078 | Data,\r | |
2079 | DataSize\r | |
2080 | );\r | |
2081 | CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));\r | |
2082 | //\r | |
2083 | // There will be pad bytes after Data, the NextVariable->NameSize and\r | |
2084 | // NextVariable->DataSize should not include pad size so that variable\r | |
2085 | // service can get actual size in GetVariable.\r | |
2086 | //\r | |
2087 | NextVariable->NameSize = (UINT32)VarNameSize;\r | |
2088 | NextVariable->DataSize = (UINT32)DataSize;\r | |
2089 | \r | |
2090 | //\r | |
2091 | // The actual size of the variable that stores in storage should\r | |
2092 | // include pad size.\r | |
2093 | //\r | |
2094 | VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r | |
2095 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r | |
2096 | //\r | |
2097 | // Create a nonvolatile variable.\r | |
2098 | //\r | |
2099 | Volatile = FALSE;\r | |
2100 | \r | |
2101 | IsCommonVariable = FALSE;\r | |
2102 | IsCommonUserVariable = FALSE;\r | |
2103 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0) {\r | |
2104 | IsCommonVariable = TRUE;\r | |
2105 | IsCommonUserVariable = IsUserVariable (NextVariable);\r | |
2106 | }\r | |
2107 | if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0)\r | |
2108 | && ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r | |
2109 | || (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonVariableSpace))\r | |
2110 | || (IsCommonVariable && AtRuntime () && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonRuntimeVariableSpace))\r | |
2111 | || (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace))) {\r | |
2112 | if (AtRuntime ()) {\r | |
2113 | if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r | |
2114 | RecordVarErrorFlag (VAR_ERROR_FLAG_USER_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2115 | }\r | |
2116 | if (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonRuntimeVariableSpace)) {\r | |
2117 | RecordVarErrorFlag (VAR_ERROR_FLAG_SYSTEM_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2118 | }\r | |
2119 | Status = EFI_OUT_OF_RESOURCES;\r | |
2120 | goto Done;\r | |
2121 | }\r | |
2122 | //\r | |
2123 | // Perform garbage collection & reclaim operation, and integrate the new variable at the same time.\r | |
2124 | //\r | |
2125 | Status = Reclaim (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase, \r | |
2126 | &mVariableModuleGlobal->NonVolatileLastVariableOffset, FALSE, Variable, NextVariable, HEADER_ALIGN (VarSize));\r | |
2127 | if (!EFI_ERROR (Status)) {\r | |
2128 | //\r | |
2129 | // The new variable has been integrated successfully during reclaiming.\r | |
2130 | //\r | |
2131 | if (Variable->CurrPtr != NULL) {\r | |
2132 | CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN) CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable->StartPtr));\r | |
2133 | CacheVariable->InDeletedTransitionPtr = NULL;\r | |
2134 | }\r | |
2135 | UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, TRUE, FALSE, FALSE);\r | |
2136 | FlushHobVariableToFlash (VariableName, VendorGuid);\r | |
2137 | } else {\r | |
2138 | if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r | |
2139 | RecordVarErrorFlag (VAR_ERROR_FLAG_USER_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2140 | }\r | |
2141 | if (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonVariableSpace)) {\r | |
2142 | RecordVarErrorFlag (VAR_ERROR_FLAG_SYSTEM_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2143 | }\r | |
2144 | }\r | |
2145 | goto Done;\r | |
2146 | }\r | |
2147 | //\r | |
2148 | // Four steps\r | |
2149 | // 1. Write variable header\r | |
2150 | // 2. Set variable state to header valid \r | |
2151 | // 3. Write variable data\r | |
2152 | // 4. Set variable state to valid\r | |
2153 | //\r | |
2154 | //\r | |
2155 | // Step 1:\r | |
2156 | //\r | |
2157 | CacheOffset = mVariableModuleGlobal->NonVolatileLastVariableOffset;\r | |
2158 | Status = UpdateVariableStore (\r | |
2159 | &mVariableModuleGlobal->VariableGlobal,\r | |
2160 | FALSE,\r | |
2161 | TRUE,\r | |
2162 | Fvb,\r | |
2163 | mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
2164 | sizeof (VARIABLE_HEADER),\r | |
2165 | (UINT8 *) NextVariable\r | |
2166 | );\r | |
2167 | \r | |
2168 | if (EFI_ERROR (Status)) {\r | |
2169 | goto Done;\r | |
2170 | }\r | |
2171 | \r | |
2172 | //\r | |
2173 | // Step 2:\r | |
2174 | //\r | |
2175 | NextVariable->State = VAR_HEADER_VALID_ONLY;\r | |
2176 | Status = UpdateVariableStore (\r | |
2177 | &mVariableModuleGlobal->VariableGlobal,\r | |
2178 | FALSE,\r | |
2179 | TRUE,\r | |
2180 | Fvb,\r | |
2181 | mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r | |
2182 | sizeof (UINT8),\r | |
2183 | &NextVariable->State\r | |
2184 | );\r | |
2185 | \r | |
2186 | if (EFI_ERROR (Status)) {\r | |
2187 | goto Done;\r | |
2188 | }\r | |
2189 | //\r | |
2190 | // Step 3:\r | |
2191 | //\r | |
2192 | Status = UpdateVariableStore (\r | |
2193 | &mVariableModuleGlobal->VariableGlobal,\r | |
2194 | FALSE,\r | |
2195 | TRUE,\r | |
2196 | Fvb,\r | |
2197 | mVariableModuleGlobal->NonVolatileLastVariableOffset + sizeof (VARIABLE_HEADER),\r | |
2198 | (UINT32) VarSize - sizeof (VARIABLE_HEADER),\r | |
2199 | (UINT8 *) NextVariable + sizeof (VARIABLE_HEADER)\r | |
2200 | );\r | |
2201 | \r | |
2202 | if (EFI_ERROR (Status)) {\r | |
2203 | goto Done;\r | |
2204 | }\r | |
2205 | //\r | |
2206 | // Step 4:\r | |
2207 | //\r | |
2208 | NextVariable->State = VAR_ADDED;\r | |
2209 | Status = UpdateVariableStore (\r | |
2210 | &mVariableModuleGlobal->VariableGlobal,\r | |
2211 | FALSE,\r | |
2212 | TRUE,\r | |
2213 | Fvb,\r | |
2214 | mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r | |
2215 | sizeof (UINT8),\r | |
2216 | &NextVariable->State\r | |
2217 | );\r | |
2218 | \r | |
2219 | if (EFI_ERROR (Status)) {\r | |
2220 | goto Done;\r | |
2221 | }\r | |
2222 | \r | |
2223 | mVariableModuleGlobal->NonVolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r | |
2224 | \r | |
2225 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r | |
2226 | mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
2227 | } else {\r | |
2228 | mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
2229 | if (IsCommonUserVariable) {\r | |
2230 | mVariableModuleGlobal->CommonUserVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
2231 | }\r | |
2232 | }\r | |
2233 | //\r | |
2234 | // update the memory copy of Flash region.\r | |
2235 | //\r | |
2236 | CopyMem ((UINT8 *)mNvVariableCache + CacheOffset, (UINT8 *)NextVariable, VarSize);\r | |
2237 | } else {\r | |
2238 | //\r | |
2239 | // Create a volatile variable.\r | |
2240 | // \r | |
2241 | Volatile = TRUE;\r | |
2242 | \r | |
2243 | if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r | |
2244 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size) {\r | |
2245 | //\r | |
2246 | // Perform garbage collection & reclaim operation, and integrate the new variable at the same time.\r | |
2247 | //\r | |
2248 | Status = Reclaim (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase, \r | |
2249 | &mVariableModuleGlobal->VolatileLastVariableOffset, TRUE, Variable, NextVariable, HEADER_ALIGN (VarSize));\r | |
2250 | if (!EFI_ERROR (Status)) {\r | |
2251 | //\r | |
2252 | // The new variable has been integrated successfully during reclaiming.\r | |
2253 | //\r | |
2254 | if (Variable->CurrPtr != NULL) {\r | |
2255 | CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN) CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable->StartPtr));\r | |
2256 | CacheVariable->InDeletedTransitionPtr = NULL;\r | |
2257 | }\r | |
2258 | UpdateVariableInfo (VariableName, VendorGuid, TRUE, FALSE, TRUE, FALSE, FALSE);\r | |
2259 | }\r | |
2260 | goto Done;\r | |
2261 | }\r | |
2262 | \r | |
2263 | NextVariable->State = VAR_ADDED;\r | |
2264 | Status = UpdateVariableStore (\r | |
2265 | &mVariableModuleGlobal->VariableGlobal,\r | |
2266 | TRUE,\r | |
2267 | TRUE,\r | |
2268 | Fvb,\r | |
2269 | mVariableModuleGlobal->VolatileLastVariableOffset,\r | |
2270 | (UINT32) VarSize,\r | |
2271 | (UINT8 *) NextVariable\r | |
2272 | );\r | |
2273 | \r | |
2274 | if (EFI_ERROR (Status)) {\r | |
2275 | goto Done;\r | |
2276 | }\r | |
2277 | \r | |
2278 | mVariableModuleGlobal->VolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r | |
2279 | }\r | |
2280 | \r | |
2281 | //\r | |
2282 | // Mark the old variable as deleted.\r | |
2283 | //\r | |
2284 | if (!EFI_ERROR (Status) && Variable->CurrPtr != NULL) {\r | |
2285 | if (Variable->InDeletedTransitionPtr != NULL) {\r | |
2286 | //\r | |
2287 | // Both ADDED and IN_DELETED_TRANSITION old variable are present,\r | |
2288 | // set IN_DELETED_TRANSITION one to DELETED state first.\r | |
2289 | //\r | |
2290 | State = Variable->InDeletedTransitionPtr->State;\r | |
2291 | State &= VAR_DELETED;\r | |
2292 | Status = UpdateVariableStore (\r | |
2293 | &mVariableModuleGlobal->VariableGlobal,\r | |
2294 | Variable->Volatile,\r | |
2295 | FALSE,\r | |
2296 | Fvb,\r | |
2297 | (UINTN) &Variable->InDeletedTransitionPtr->State,\r | |
2298 | sizeof (UINT8),\r | |
2299 | &State\r | |
2300 | );\r | |
2301 | if (!EFI_ERROR (Status)) {\r | |
2302 | if (!Variable->Volatile) {\r | |
2303 | ASSERT (CacheVariable->InDeletedTransitionPtr != NULL);\r | |
2304 | CacheVariable->InDeletedTransitionPtr->State = State;\r | |
2305 | }\r | |
2306 | } else {\r | |
2307 | goto Done;\r | |
2308 | }\r | |
2309 | }\r | |
2310 | \r | |
2311 | State = Variable->CurrPtr->State;\r | |
2312 | State &= VAR_DELETED;\r | |
2313 | \r | |
2314 | Status = UpdateVariableStore (\r | |
2315 | &mVariableModuleGlobal->VariableGlobal,\r | |
2316 | Variable->Volatile,\r | |
2317 | FALSE,\r | |
2318 | Fvb,\r | |
2319 | (UINTN) &Variable->CurrPtr->State,\r | |
2320 | sizeof (UINT8),\r | |
2321 | &State\r | |
2322 | );\r | |
2323 | if (!EFI_ERROR (Status) && !Variable->Volatile) { \r | |
2324 | CacheVariable->CurrPtr->State = State;\r | |
2325 | }\r | |
2326 | }\r | |
2327 | \r | |
2328 | if (!EFI_ERROR (Status)) {\r | |
2329 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r | |
2330 | if (!Volatile) {\r | |
2331 | FlushHobVariableToFlash (VariableName, VendorGuid);\r | |
2332 | }\r | |
2333 | }\r | |
2334 | \r | |
2335 | Done:\r | |
2336 | return Status;\r | |
2337 | }\r | |
2338 | \r | |
2339 | /**\r | |
2340 | Check if a Unicode character is a hexadecimal character.\r | |
2341 | \r | |
2342 | This function checks if a Unicode character is a \r | |
2343 | hexadecimal character. The valid hexadecimal character is \r | |
2344 | L'0' to L'9', L'a' to L'f', or L'A' to L'F'.\r | |
2345 | \r | |
2346 | \r | |
2347 | @param Char The character to check against.\r | |
2348 | \r | |
2349 | @retval TRUE If the Char is a hexadecmial character.\r | |
2350 | @retval FALSE If the Char is not a hexadecmial character.\r | |
2351 | \r | |
2352 | **/\r | |
2353 | BOOLEAN\r | |
2354 | EFIAPI\r | |
2355 | IsHexaDecimalDigitCharacter (\r | |
2356 | IN CHAR16 Char\r | |
2357 | )\r | |
2358 | {\r | |
2359 | return (BOOLEAN) ((Char >= L'0' && Char <= L'9') || (Char >= L'A' && Char <= L'F') || (Char >= L'a' && Char <= L'f'));\r | |
2360 | }\r | |
2361 | \r | |
2362 | /**\r | |
2363 | \r | |
2364 | This code checks if variable is hardware error record variable or not.\r | |
2365 | \r | |
2366 | According to UEFI spec, hardware error record variable should use the EFI_HARDWARE_ERROR_VARIABLE VendorGuid\r | |
2367 | and have the L"HwErrRec####" name convention, #### is a printed hex value and no 0x or h is included in the hex value.\r | |
2368 | \r | |
2369 | @param VariableName Pointer to variable name.\r | |
2370 | @param VendorGuid Variable Vendor Guid.\r | |
2371 | \r | |
2372 | @retval TRUE Variable is hardware error record variable.\r | |
2373 | @retval FALSE Variable is not hardware error record variable.\r | |
2374 | \r | |
2375 | **/\r | |
2376 | BOOLEAN\r | |
2377 | EFIAPI\r | |
2378 | IsHwErrRecVariable (\r | |
2379 | IN CHAR16 *VariableName,\r | |
2380 | IN EFI_GUID *VendorGuid\r | |
2381 | )\r | |
2382 | {\r | |
2383 | if (!CompareGuid (VendorGuid, &gEfiHardwareErrorVariableGuid) ||\r | |
2384 | (StrLen (VariableName) != StrLen (L"HwErrRec####")) ||\r | |
2385 | (StrnCmp(VariableName, L"HwErrRec", StrLen (L"HwErrRec")) != 0) ||\r | |
2386 | !IsHexaDecimalDigitCharacter (VariableName[0x8]) ||\r | |
2387 | !IsHexaDecimalDigitCharacter (VariableName[0x9]) ||\r | |
2388 | !IsHexaDecimalDigitCharacter (VariableName[0xA]) ||\r | |
2389 | !IsHexaDecimalDigitCharacter (VariableName[0xB])) {\r | |
2390 | return FALSE;\r | |
2391 | }\r | |
2392 | \r | |
2393 | return TRUE;\r | |
2394 | }\r | |
2395 | \r | |
2396 | /**\r | |
2397 | Mark a variable that will become read-only after leaving the DXE phase of execution.\r | |
2398 | \r | |
2399 | @param[in] This The VARIABLE_LOCK_PROTOCOL instance.\r | |
2400 | @param[in] VariableName A pointer to the variable name that will be made read-only subsequently.\r | |
2401 | @param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.\r | |
2402 | \r | |
2403 | @retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked\r | |
2404 | as pending to be read-only.\r | |
2405 | @retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.\r | |
2406 | Or VariableName is an empty string.\r | |
2407 | @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r | |
2408 | already been signaled.\r | |
2409 | @retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.\r | |
2410 | **/\r | |
2411 | EFI_STATUS\r | |
2412 | EFIAPI\r | |
2413 | VariableLockRequestToLock (\r | |
2414 | IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,\r | |
2415 | IN CHAR16 *VariableName,\r | |
2416 | IN EFI_GUID *VendorGuid\r | |
2417 | )\r | |
2418 | {\r | |
2419 | VARIABLE_ENTRY *Entry;\r | |
2420 | CHAR16 *Name;\r | |
2421 | LIST_ENTRY *Link;\r | |
2422 | VARIABLE_ENTRY *LockedEntry;\r | |
2423 | \r | |
2424 | if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r | |
2425 | return EFI_INVALID_PARAMETER;\r | |
2426 | }\r | |
2427 | \r | |
2428 | if (mEndOfDxe) {\r | |
2429 | return EFI_ACCESS_DENIED;\r | |
2430 | }\r | |
2431 | \r | |
2432 | Entry = AllocateRuntimeZeroPool (sizeof (*Entry) + StrSize (VariableName));\r | |
2433 | if (Entry == NULL) {\r | |
2434 | return EFI_OUT_OF_RESOURCES;\r | |
2435 | }\r | |
2436 | \r | |
2437 | DEBUG ((EFI_D_INFO, "[Variable] Lock: %g:%s\n", VendorGuid, VariableName));\r | |
2438 | \r | |
2439 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2440 | \r | |
2441 | for ( Link = GetFirstNode (&mLockedVariableList)\r | |
2442 | ; !IsNull (&mLockedVariableList, Link)\r | |
2443 | ; Link = GetNextNode (&mLockedVariableList, Link)\r | |
2444 | ) {\r | |
2445 | LockedEntry = BASE_CR (Link, VARIABLE_ENTRY, Link);\r | |
2446 | Name = (CHAR16 *) ((UINTN) LockedEntry + sizeof (*LockedEntry));\r | |
2447 | if (CompareGuid (&LockedEntry->Guid, VendorGuid) && (StrCmp (Name, VariableName) == 0)) {\r | |
2448 | goto Done;\r | |
2449 | }\r | |
2450 | }\r | |
2451 | \r | |
2452 | Name = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r | |
2453 | StrnCpy (Name, VariableName, StrLen (VariableName));\r | |
2454 | CopyGuid (&Entry->Guid, VendorGuid);\r | |
2455 | InsertTailList (&mLockedVariableList, &Entry->Link);\r | |
2456 | \r | |
2457 | Done:\r | |
2458 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2459 | \r | |
2460 | return EFI_SUCCESS;\r | |
2461 | }\r | |
2462 | \r | |
2463 | /**\r | |
2464 | \r | |
2465 | This code finds variable in storage blocks (Volatile or Non-Volatile).\r | |
2466 | \r | |
2467 | Caution: This function may receive untrusted input.\r | |
2468 | This function may be invoked in SMM mode, and datasize is external input.\r | |
2469 | This function will do basic validation, before parse the data.\r | |
2470 | \r | |
2471 | @param VariableName Name of Variable to be found.\r | |
2472 | @param VendorGuid Variable vendor GUID.\r | |
2473 | @param Attributes Attribute value of the variable found.\r | |
2474 | @param DataSize Size of Data found. If size is less than the\r | |
2475 | data, this value contains the required size.\r | |
2476 | @param Data Data pointer.\r | |
2477 | \r | |
2478 | @return EFI_INVALID_PARAMETER Invalid parameter.\r | |
2479 | @return EFI_SUCCESS Find the specified variable.\r | |
2480 | @return EFI_NOT_FOUND Not found.\r | |
2481 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r | |
2482 | \r | |
2483 | **/\r | |
2484 | EFI_STATUS\r | |
2485 | EFIAPI\r | |
2486 | VariableServiceGetVariable (\r | |
2487 | IN CHAR16 *VariableName,\r | |
2488 | IN EFI_GUID *VendorGuid,\r | |
2489 | OUT UINT32 *Attributes OPTIONAL,\r | |
2490 | IN OUT UINTN *DataSize,\r | |
2491 | OUT VOID *Data\r | |
2492 | )\r | |
2493 | {\r | |
2494 | EFI_STATUS Status;\r | |
2495 | VARIABLE_POINTER_TRACK Variable;\r | |
2496 | UINTN VarDataSize;\r | |
2497 | \r | |
2498 | if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r | |
2499 | return EFI_INVALID_PARAMETER;\r | |
2500 | }\r | |
2501 | \r | |
2502 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2503 | \r | |
2504 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
2505 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r | |
2506 | goto Done;\r | |
2507 | }\r | |
2508 | \r | |
2509 | //\r | |
2510 | // Get data size\r | |
2511 | //\r | |
2512 | VarDataSize = DataSizeOfVariable (Variable.CurrPtr);\r | |
2513 | ASSERT (VarDataSize != 0);\r | |
2514 | \r | |
2515 | if (*DataSize >= VarDataSize) {\r | |
2516 | if (Data == NULL) {\r | |
2517 | Status = EFI_INVALID_PARAMETER;\r | |
2518 | goto Done;\r | |
2519 | }\r | |
2520 | \r | |
2521 | CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r | |
2522 | if (Attributes != NULL) {\r | |
2523 | *Attributes = Variable.CurrPtr->Attributes;\r | |
2524 | }\r | |
2525 | \r | |
2526 | *DataSize = VarDataSize;\r | |
2527 | UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r | |
2528 | \r | |
2529 | Status = EFI_SUCCESS;\r | |
2530 | goto Done;\r | |
2531 | } else {\r | |
2532 | *DataSize = VarDataSize;\r | |
2533 | Status = EFI_BUFFER_TOO_SMALL;\r | |
2534 | goto Done;\r | |
2535 | }\r | |
2536 | \r | |
2537 | Done:\r | |
2538 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2539 | return Status;\r | |
2540 | }\r | |
2541 | \r | |
2542 | \r | |
2543 | \r | |
2544 | /**\r | |
2545 | \r | |
2546 | This code Finds the Next available variable.\r | |
2547 | \r | |
2548 | Caution: This function may receive untrusted input.\r | |
2549 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
2550 | \r | |
2551 | @param VariableNameSize Size of the variable name.\r | |
2552 | @param VariableName Pointer to variable name.\r | |
2553 | @param VendorGuid Variable Vendor Guid.\r | |
2554 | \r | |
2555 | @return EFI_INVALID_PARAMETER Invalid parameter.\r | |
2556 | @return EFI_SUCCESS Find the specified variable.\r | |
2557 | @return EFI_NOT_FOUND Not found.\r | |
2558 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r | |
2559 | \r | |
2560 | **/\r | |
2561 | EFI_STATUS\r | |
2562 | EFIAPI\r | |
2563 | VariableServiceGetNextVariableName (\r | |
2564 | IN OUT UINTN *VariableNameSize,\r | |
2565 | IN OUT CHAR16 *VariableName,\r | |
2566 | IN OUT EFI_GUID *VendorGuid\r | |
2567 | )\r | |
2568 | {\r | |
2569 | VARIABLE_STORE_TYPE Type;\r | |
2570 | VARIABLE_POINTER_TRACK Variable;\r | |
2571 | VARIABLE_POINTER_TRACK VariableInHob;\r | |
2572 | VARIABLE_POINTER_TRACK VariablePtrTrack;\r | |
2573 | UINTN VarNameSize;\r | |
2574 | EFI_STATUS Status;\r | |
2575 | VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r | |
2576 | \r | |
2577 | if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r | |
2578 | return EFI_INVALID_PARAMETER;\r | |
2579 | }\r | |
2580 | \r | |
2581 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2582 | \r | |
2583 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
2584 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r | |
2585 | goto Done;\r | |
2586 | }\r | |
2587 | \r | |
2588 | if (VariableName[0] != 0) {\r | |
2589 | //\r | |
2590 | // If variable name is not NULL, get next variable.\r | |
2591 | //\r | |
2592 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
2593 | }\r | |
2594 | \r | |
2595 | //\r | |
2596 | // 0: Volatile, 1: HOB, 2: Non-Volatile.\r | |
2597 | // The index and attributes mapping must be kept in this order as FindVariable\r | |
2598 | // makes use of this mapping to implement search algorithm.\r | |
2599 | //\r | |
2600 | VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r | |
2601 | VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r | |
2602 | VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r | |
2603 | \r | |
2604 | while (TRUE) {\r | |
2605 | //\r | |
2606 | // Switch from Volatile to HOB, to Non-Volatile.\r | |
2607 | //\r | |
2608 | while (!IsValidVariableHeader (Variable.CurrPtr, Variable.EndPtr)) {\r | |
2609 | //\r | |
2610 | // Find current storage index\r | |
2611 | //\r | |
2612 | for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r | |
2613 | if ((VariableStoreHeader[Type] != NULL) && (Variable.StartPtr == GetStartPointer (VariableStoreHeader[Type]))) {\r | |
2614 | break;\r | |
2615 | }\r | |
2616 | }\r | |
2617 | ASSERT (Type < VariableStoreTypeMax);\r | |
2618 | //\r | |
2619 | // Switch to next storage\r | |
2620 | //\r | |
2621 | for (Type++; Type < VariableStoreTypeMax; Type++) {\r | |
2622 | if (VariableStoreHeader[Type] != NULL) {\r | |
2623 | break;\r | |
2624 | }\r | |
2625 | }\r | |
2626 | //\r | |
2627 | // Capture the case that \r | |
2628 | // 1. current storage is the last one, or\r | |
2629 | // 2. no further storage\r | |
2630 | //\r | |
2631 | if (Type == VariableStoreTypeMax) {\r | |
2632 | Status = EFI_NOT_FOUND;\r | |
2633 | goto Done;\r | |
2634 | }\r | |
2635 | Variable.StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r | |
2636 | Variable.EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r | |
2637 | Variable.CurrPtr = Variable.StartPtr;\r | |
2638 | }\r | |
2639 | \r | |
2640 | //\r | |
2641 | // Variable is found\r | |
2642 | //\r | |
2643 | if (Variable.CurrPtr->State == VAR_ADDED || Variable.CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
2644 | if (!AtRuntime () || ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r | |
2645 | if (Variable.CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
2646 | //\r | |
2647 | // If it is a IN_DELETED_TRANSITION variable,\r | |
2648 | // and there is also a same ADDED one at the same time,\r | |
2649 | // don't return it.\r | |
2650 | //\r | |
2651 | VariablePtrTrack.StartPtr = Variable.StartPtr;\r | |
2652 | VariablePtrTrack.EndPtr = Variable.EndPtr;\r | |
2653 | Status = FindVariableEx (\r | |
2654 | GetVariableNamePtr (Variable.CurrPtr),\r | |
2655 | &Variable.CurrPtr->VendorGuid,\r | |
2656 | FALSE,\r | |
2657 | &VariablePtrTrack\r | |
2658 | );\r | |
2659 | if (!EFI_ERROR (Status) && VariablePtrTrack.CurrPtr->State == VAR_ADDED) {\r | |
2660 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
2661 | continue;\r | |
2662 | }\r | |
2663 | }\r | |
2664 | \r | |
2665 | //\r | |
2666 | // Don't return NV variable when HOB overrides it\r | |
2667 | //\r | |
2668 | if ((VariableStoreHeader[VariableStoreTypeHob] != NULL) && (VariableStoreHeader[VariableStoreTypeNv] != NULL) && \r | |
2669 | (Variable.StartPtr == GetStartPointer (VariableStoreHeader[VariableStoreTypeNv]))\r | |
2670 | ) {\r | |
2671 | VariableInHob.StartPtr = GetStartPointer (VariableStoreHeader[VariableStoreTypeHob]);\r | |
2672 | VariableInHob.EndPtr = GetEndPointer (VariableStoreHeader[VariableStoreTypeHob]);\r | |
2673 | Status = FindVariableEx (\r | |
2674 | GetVariableNamePtr (Variable.CurrPtr),\r | |
2675 | &Variable.CurrPtr->VendorGuid,\r | |
2676 | FALSE,\r | |
2677 | &VariableInHob\r | |
2678 | );\r | |
2679 | if (!EFI_ERROR (Status)) {\r | |
2680 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
2681 | continue;\r | |
2682 | }\r | |
2683 | }\r | |
2684 | \r | |
2685 | VarNameSize = NameSizeOfVariable (Variable.CurrPtr);\r | |
2686 | ASSERT (VarNameSize != 0);\r | |
2687 | \r | |
2688 | if (VarNameSize <= *VariableNameSize) {\r | |
2689 | CopyMem (VariableName, GetVariableNamePtr (Variable.CurrPtr), VarNameSize);\r | |
2690 | CopyMem (VendorGuid, &Variable.CurrPtr->VendorGuid, sizeof (EFI_GUID));\r | |
2691 | Status = EFI_SUCCESS;\r | |
2692 | } else {\r | |
2693 | Status = EFI_BUFFER_TOO_SMALL;\r | |
2694 | }\r | |
2695 | \r | |
2696 | *VariableNameSize = VarNameSize;\r | |
2697 | goto Done;\r | |
2698 | }\r | |
2699 | }\r | |
2700 | \r | |
2701 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
2702 | }\r | |
2703 | \r | |
2704 | Done:\r | |
2705 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2706 | return Status;\r | |
2707 | }\r | |
2708 | \r | |
2709 | /**\r | |
2710 | \r | |
2711 | This code sets variable in storage blocks (Volatile or Non-Volatile).\r | |
2712 | \r | |
2713 | Caution: This function may receive untrusted input.\r | |
2714 | This function may be invoked in SMM mode, and datasize and data are external input.\r | |
2715 | This function will do basic validation, before parse the data.\r | |
2716 | \r | |
2717 | @param VariableName Name of Variable to be found.\r | |
2718 | @param VendorGuid Variable vendor GUID.\r | |
2719 | @param Attributes Attribute value of the variable found\r | |
2720 | @param DataSize Size of Data found. If size is less than the\r | |
2721 | data, this value contains the required size.\r | |
2722 | @param Data Data pointer.\r | |
2723 | \r | |
2724 | @return EFI_INVALID_PARAMETER Invalid parameter.\r | |
2725 | @return EFI_SUCCESS Set successfully.\r | |
2726 | @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r | |
2727 | @return EFI_NOT_FOUND Not found.\r | |
2728 | @return EFI_WRITE_PROTECTED Variable is read-only.\r | |
2729 | \r | |
2730 | **/\r | |
2731 | EFI_STATUS\r | |
2732 | EFIAPI\r | |
2733 | VariableServiceSetVariable (\r | |
2734 | IN CHAR16 *VariableName,\r | |
2735 | IN EFI_GUID *VendorGuid,\r | |
2736 | IN UINT32 Attributes,\r | |
2737 | IN UINTN DataSize,\r | |
2738 | IN VOID *Data\r | |
2739 | )\r | |
2740 | {\r | |
2741 | VARIABLE_POINTER_TRACK Variable;\r | |
2742 | EFI_STATUS Status;\r | |
2743 | VARIABLE_HEADER *NextVariable;\r | |
2744 | EFI_PHYSICAL_ADDRESS Point;\r | |
2745 | LIST_ENTRY *Link;\r | |
2746 | VARIABLE_ENTRY *Entry;\r | |
2747 | CHAR16 *Name;\r | |
2748 | \r | |
2749 | //\r | |
2750 | // Check input parameters.\r | |
2751 | //\r | |
2752 | if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r | |
2753 | return EFI_INVALID_PARAMETER;\r | |
2754 | } \r | |
2755 | \r | |
2756 | if (DataSize != 0 && Data == NULL) {\r | |
2757 | return EFI_INVALID_PARAMETER;\r | |
2758 | }\r | |
2759 | \r | |
2760 | //\r | |
2761 | // Not support authenticated or append variable write yet.\r | |
2762 | //\r | |
2763 | if ((Attributes & (EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_APPEND_WRITE)) != 0) {\r | |
2764 | return EFI_INVALID_PARAMETER;\r | |
2765 | }\r | |
2766 | \r | |
2767 | //\r | |
2768 | // Make sure if runtime bit is set, boot service bit is set also.\r | |
2769 | //\r | |
2770 | if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r | |
2771 | return EFI_INVALID_PARAMETER;\r | |
2772 | }\r | |
2773 | \r | |
2774 | if ((UINTN)(~0) - DataSize < StrSize(VariableName)){\r | |
2775 | //\r | |
2776 | // Prevent whole variable size overflow \r | |
2777 | // \r | |
2778 | return EFI_INVALID_PARAMETER;\r | |
2779 | }\r | |
2780 | \r | |
2781 | //\r | |
2782 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
2783 | // the DataSize is limited to maximum size of PcdGet32 (PcdMaxHardwareErrorVariableSize)\r | |
2784 | // bytes for HwErrRec, and PcdGet32 (PcdMaxVariableSize) bytes for the others.\r | |
2785 | //\r | |
2786 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
2787 | if ( StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER)) {\r | |
2788 | return EFI_INVALID_PARAMETER;\r | |
2789 | }\r | |
2790 | if (!IsHwErrRecVariable(VariableName, VendorGuid)) {\r | |
2791 | return EFI_INVALID_PARAMETER;\r | |
2792 | }\r | |
2793 | } else {\r | |
2794 | //\r | |
2795 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
2796 | // the DataSize is limited to maximum size of PcdGet32 (PcdMaxVariableSize) bytes.\r | |
2797 | //\r | |
2798 | if (StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER)) {\r | |
2799 | return EFI_INVALID_PARAMETER;\r | |
2800 | }\r | |
2801 | }\r | |
2802 | \r | |
2803 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2804 | \r | |
2805 | //\r | |
2806 | // Consider reentrant in MCA/INIT/NMI. It needs be reupdated.\r | |
2807 | //\r | |
2808 | if (1 < InterlockedIncrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState)) {\r | |
2809 | Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r | |
2810 | //\r | |
2811 | // Parse non-volatile variable data and get last variable offset.\r | |
2812 | //\r | |
2813 | NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point);\r | |
2814 | while (IsValidVariableHeader (NextVariable, GetEndPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point))) {\r | |
2815 | NextVariable = GetNextVariablePtr (NextVariable);\r | |
2816 | }\r | |
2817 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) Point;\r | |
2818 | }\r | |
2819 | \r | |
2820 | if (mEndOfDxe && mEnableLocking) {\r | |
2821 | //\r | |
2822 | // Treat the variables listed in the forbidden variable list as read-only after leaving DXE phase.\r | |
2823 | //\r | |
2824 | for ( Link = GetFirstNode (&mLockedVariableList)\r | |
2825 | ; !IsNull (&mLockedVariableList, Link)\r | |
2826 | ; Link = GetNextNode (&mLockedVariableList, Link)\r | |
2827 | ) {\r | |
2828 | Entry = BASE_CR (Link, VARIABLE_ENTRY, Link);\r | |
2829 | Name = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r | |
2830 | if (CompareGuid (&Entry->Guid, VendorGuid) && (StrCmp (Name, VariableName) == 0)) {\r | |
2831 | Status = EFI_WRITE_PROTECTED;\r | |
2832 | DEBUG ((EFI_D_INFO, "[Variable]: Changing readonly variable after leaving DXE phase - %g:%s\n", VendorGuid, VariableName));\r | |
2833 | goto Done;\r | |
2834 | }\r | |
2835 | }\r | |
2836 | }\r | |
2837 | \r | |
2838 | Status = InternalVarCheckSetVariableCheck (VariableName, VendorGuid, Attributes, DataSize, Data);\r | |
2839 | if (EFI_ERROR (Status)) {\r | |
2840 | goto Done;\r | |
2841 | }\r | |
2842 | \r | |
2843 | //\r | |
2844 | // Check whether the input variable is already existed.\r | |
2845 | //\r | |
2846 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, TRUE);\r | |
2847 | if (!EFI_ERROR (Status)) {\r | |
2848 | if (((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) && AtRuntime ()) {\r | |
2849 | Status = EFI_WRITE_PROTECTED;\r | |
2850 | goto Done;\r | |
2851 | }\r | |
2852 | if (Attributes != 0 && Attributes != Variable.CurrPtr->Attributes) {\r | |
2853 | //\r | |
2854 | // If a preexisting variable is rewritten with different attributes, SetVariable() shall not\r | |
2855 | // modify the variable and shall return EFI_INVALID_PARAMETER. Two exceptions to this rule:\r | |
2856 | // 1. No access attributes specified\r | |
2857 | // 2. The only attribute differing is EFI_VARIABLE_APPEND_WRITE\r | |
2858 | //\r | |
2859 | Status = EFI_INVALID_PARAMETER;\r | |
2860 | DEBUG ((EFI_D_INFO, "[Variable]: Rewritten a preexisting variable(0x%08x) with different attributes(0x%08x) - %g:%s\n", Variable.CurrPtr->Attributes, Attributes, VendorGuid, VariableName));\r | |
2861 | goto Done;\r | |
2862 | }\r | |
2863 | }\r | |
2864 | \r | |
2865 | if (!FeaturePcdGet (PcdUefiVariableDefaultLangDeprecate)) {\r | |
2866 | //\r | |
2867 | // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang.\r | |
2868 | //\r | |
2869 | Status = AutoUpdateLangVariable (VariableName, Data, DataSize);\r | |
2870 | if (EFI_ERROR (Status)) {\r | |
2871 | //\r | |
2872 | // The auto update operation failed, directly return to avoid inconsistency between PlatformLang and Lang.\r | |
2873 | //\r | |
2874 | goto Done;\r | |
2875 | }\r | |
2876 | }\r | |
2877 | \r | |
2878 | Status = UpdateVariable (VariableName, VendorGuid, Data, DataSize, Attributes, &Variable);\r | |
2879 | \r | |
2880 | Done:\r | |
2881 | InterlockedDecrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState);\r | |
2882 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2883 | \r | |
2884 | return Status;\r | |
2885 | }\r | |
2886 | \r | |
2887 | /**\r | |
2888 | \r | |
2889 | This code returns information about the EFI variables.\r | |
2890 | \r | |
2891 | Caution: This function may receive untrusted input.\r | |
2892 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
2893 | \r | |
2894 | @param Attributes Attributes bitmask to specify the type of variables\r | |
2895 | on which to return information.\r | |
2896 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
2897 | for the EFI variables associated with the attributes specified.\r | |
2898 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
2899 | for EFI variables associated with the attributes specified.\r | |
2900 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
2901 | associated with the attributes specified.\r | |
2902 | \r | |
2903 | @return EFI_SUCCESS Query successfully.\r | |
2904 | \r | |
2905 | **/\r | |
2906 | EFI_STATUS\r | |
2907 | EFIAPI\r | |
2908 | VariableServiceQueryVariableInfoInternal (\r | |
2909 | IN UINT32 Attributes,\r | |
2910 | OUT UINT64 *MaximumVariableStorageSize,\r | |
2911 | OUT UINT64 *RemainingVariableStorageSize,\r | |
2912 | OUT UINT64 *MaximumVariableSize\r | |
2913 | )\r | |
2914 | {\r | |
2915 | VARIABLE_HEADER *Variable;\r | |
2916 | VARIABLE_HEADER *NextVariable;\r | |
2917 | UINT64 VariableSize;\r | |
2918 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
2919 | UINT64 CommonVariableTotalSize;\r | |
2920 | UINT64 HwErrVariableTotalSize;\r | |
2921 | EFI_STATUS Status;\r | |
2922 | VARIABLE_POINTER_TRACK VariablePtrTrack;\r | |
2923 | \r | |
2924 | CommonVariableTotalSize = 0;\r | |
2925 | HwErrVariableTotalSize = 0;\r | |
2926 | \r | |
2927 | if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r | |
2928 | //\r | |
2929 | // Query is Volatile related.\r | |
2930 | //\r | |
2931 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r | |
2932 | } else {\r | |
2933 | //\r | |
2934 | // Query is Non-Volatile related.\r | |
2935 | //\r | |
2936 | VariableStoreHeader = mNvVariableCache;\r | |
2937 | }\r | |
2938 | \r | |
2939 | //\r | |
2940 | // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize\r | |
2941 | // with the storage size (excluding the storage header size).\r | |
2942 | //\r | |
2943 | *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r | |
2944 | \r | |
2945 | //\r | |
2946 | // Harware error record variable needs larger size.\r | |
2947 | //\r | |
2948 | if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
2949 | *MaximumVariableStorageSize = PcdGet32 (PcdHwErrStorageSize);\r | |
2950 | *MaximumVariableSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r | |
2951 | } else {\r | |
2952 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r | |
2953 | if (AtRuntime ()) {\r | |
2954 | *MaximumVariableStorageSize = mVariableModuleGlobal->CommonRuntimeVariableSpace;\r | |
2955 | } else {\r | |
2956 | *MaximumVariableStorageSize = mVariableModuleGlobal->CommonVariableSpace;\r | |
2957 | }\r | |
2958 | }\r | |
2959 | \r | |
2960 | //\r | |
2961 | // Let *MaximumVariableSize be PcdGet32 (PcdMaxVariableSize) with the exception of the variable header size.\r | |
2962 | //\r | |
2963 | *MaximumVariableSize = PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER);\r | |
2964 | }\r | |
2965 | \r | |
2966 | //\r | |
2967 | // Point to the starting address of the variables.\r | |
2968 | //\r | |
2969 | Variable = GetStartPointer (VariableStoreHeader);\r | |
2970 | \r | |
2971 | //\r | |
2972 | // Now walk through the related variable store.\r | |
2973 | //\r | |
2974 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r | |
2975 | NextVariable = GetNextVariablePtr (Variable);\r | |
2976 | VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r | |
2977 | \r | |
2978 | if (AtRuntime ()) {\r | |
2979 | //\r | |
2980 | // We don't take the state of the variables in mind\r | |
2981 | // when calculating RemainingVariableStorageSize,\r | |
2982 | // since the space occupied by variables not marked with\r | |
2983 | // VAR_ADDED is not allowed to be reclaimed in Runtime.\r | |
2984 | //\r | |
2985 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
2986 | HwErrVariableTotalSize += VariableSize;\r | |
2987 | } else {\r | |
2988 | CommonVariableTotalSize += VariableSize;\r | |
2989 | }\r | |
2990 | } else {\r | |
2991 | //\r | |
2992 | // Only care about Variables with State VAR_ADDED, because\r | |
2993 | // the space not marked as VAR_ADDED is reclaimable now.\r | |
2994 | //\r | |
2995 | if (Variable->State == VAR_ADDED) {\r | |
2996 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
2997 | HwErrVariableTotalSize += VariableSize;\r | |
2998 | } else {\r | |
2999 | CommonVariableTotalSize += VariableSize;\r | |
3000 | }\r | |
3001 | } else if (Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
3002 | //\r | |
3003 | // If it is a IN_DELETED_TRANSITION variable,\r | |
3004 | // and there is not also a same ADDED one at the same time,\r | |
3005 | // this IN_DELETED_TRANSITION variable is valid.\r | |
3006 | //\r | |
3007 | VariablePtrTrack.StartPtr = GetStartPointer (VariableStoreHeader);\r | |
3008 | VariablePtrTrack.EndPtr = GetEndPointer (VariableStoreHeader);\r | |
3009 | Status = FindVariableEx (\r | |
3010 | GetVariableNamePtr (Variable),\r | |
3011 | &Variable->VendorGuid,\r | |
3012 | FALSE,\r | |
3013 | &VariablePtrTrack\r | |
3014 | );\r | |
3015 | if (!EFI_ERROR (Status) && VariablePtrTrack.CurrPtr->State != VAR_ADDED) {\r | |
3016 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
3017 | HwErrVariableTotalSize += VariableSize;\r | |
3018 | } else {\r | |
3019 | CommonVariableTotalSize += VariableSize;\r | |
3020 | }\r | |
3021 | }\r | |
3022 | }\r | |
3023 | }\r | |
3024 | \r | |
3025 | //\r | |
3026 | // Go to the next one.\r | |
3027 | //\r | |
3028 | Variable = NextVariable;\r | |
3029 | }\r | |
3030 | \r | |
3031 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD){\r | |
3032 | *RemainingVariableStorageSize = *MaximumVariableStorageSize - HwErrVariableTotalSize;\r | |
3033 | } else {\r | |
3034 | if (*MaximumVariableStorageSize < CommonVariableTotalSize) {\r | |
3035 | *RemainingVariableStorageSize = 0;\r | |
3036 | } else {\r | |
3037 | *RemainingVariableStorageSize = *MaximumVariableStorageSize - CommonVariableTotalSize;\r | |
3038 | }\r | |
3039 | }\r | |
3040 | \r | |
3041 | if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {\r | |
3042 | *MaximumVariableSize = 0;\r | |
3043 | } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) < *MaximumVariableSize) {\r | |
3044 | *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (VARIABLE_HEADER);\r | |
3045 | }\r | |
3046 | \r | |
3047 | return EFI_SUCCESS;\r | |
3048 | }\r | |
3049 | \r | |
3050 | /**\r | |
3051 | \r | |
3052 | This code returns information about the EFI variables.\r | |
3053 | \r | |
3054 | Caution: This function may receive untrusted input.\r | |
3055 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
3056 | \r | |
3057 | @param Attributes Attributes bitmask to specify the type of variables\r | |
3058 | on which to return information.\r | |
3059 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
3060 | for the EFI variables associated with the attributes specified.\r | |
3061 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
3062 | for EFI variables associated with the attributes specified.\r | |
3063 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
3064 | associated with the attributes specified.\r | |
3065 | \r | |
3066 | @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r | |
3067 | @return EFI_SUCCESS Query successfully.\r | |
3068 | @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r | |
3069 | \r | |
3070 | **/\r | |
3071 | EFI_STATUS\r | |
3072 | EFIAPI\r | |
3073 | VariableServiceQueryVariableInfo (\r | |
3074 | IN UINT32 Attributes,\r | |
3075 | OUT UINT64 *MaximumVariableStorageSize,\r | |
3076 | OUT UINT64 *RemainingVariableStorageSize,\r | |
3077 | OUT UINT64 *MaximumVariableSize\r | |
3078 | )\r | |
3079 | {\r | |
3080 | EFI_STATUS Status;\r | |
3081 | \r | |
3082 | if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r | |
3083 | return EFI_INVALID_PARAMETER;\r | |
3084 | }\r | |
3085 | \r | |
3086 | if((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == 0) {\r | |
3087 | //\r | |
3088 | // Make sure the Attributes combination is supported by the platform.\r | |
3089 | //\r | |
3090 | return EFI_UNSUPPORTED;\r | |
3091 | } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r | |
3092 | //\r | |
3093 | // Make sure if runtime bit is set, boot service bit is set also.\r | |
3094 | //\r | |
3095 | return EFI_INVALID_PARAMETER;\r | |
3096 | } else if (AtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r | |
3097 | //\r | |
3098 | // Make sure RT Attribute is set if we are in Runtime phase.\r | |
3099 | //\r | |
3100 | return EFI_INVALID_PARAMETER;\r | |
3101 | } else if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
3102 | //\r | |
3103 | // Make sure Hw Attribute is set with NV.\r | |
3104 | //\r | |
3105 | return EFI_INVALID_PARAMETER;\r | |
3106 | } else if ((Attributes & (EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_APPEND_WRITE)) != 0) {\r | |
3107 | //\r | |
3108 | // Not support authenticated or append variable write yet.\r | |
3109 | //\r | |
3110 | return EFI_UNSUPPORTED;\r | |
3111 | }\r | |
3112 | \r | |
3113 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
3114 | \r | |
3115 | Status = VariableServiceQueryVariableInfoInternal (\r | |
3116 | Attributes,\r | |
3117 | MaximumVariableStorageSize,\r | |
3118 | RemainingVariableStorageSize,\r | |
3119 | MaximumVariableSize\r | |
3120 | );\r | |
3121 | \r | |
3122 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
3123 | return Status;\r | |
3124 | }\r | |
3125 | \r | |
3126 | /**\r | |
3127 | This function reclaims variable storage if free size is below the threshold.\r | |
3128 | \r | |
3129 | Caution: This function may be invoked at SMM mode.\r | |
3130 | Care must be taken to make sure not security issue.\r | |
3131 | \r | |
3132 | **/\r | |
3133 | VOID\r | |
3134 | ReclaimForOS(\r | |
3135 | VOID\r | |
3136 | )\r | |
3137 | {\r | |
3138 | EFI_STATUS Status;\r | |
3139 | UINTN RemainingCommonRuntimeVariableSpace;\r | |
3140 | UINTN RemainingHwErrVariableSpace;\r | |
3141 | STATIC BOOLEAN Reclaimed;\r | |
3142 | \r | |
3143 | //\r | |
3144 | // This function will be called only once at EndOfDxe or ReadyToBoot event.\r | |
3145 | //\r | |
3146 | if (Reclaimed) {\r | |
3147 | return;\r | |
3148 | }\r | |
3149 | Reclaimed = TRUE;\r | |
3150 | \r | |
3151 | Status = EFI_SUCCESS;\r | |
3152 | \r | |
3153 | if (mVariableModuleGlobal->CommonRuntimeVariableSpace < mVariableModuleGlobal->CommonVariableTotalSize) {\r | |
3154 | RemainingCommonRuntimeVariableSpace = 0;\r | |
3155 | } else {\r | |
3156 | RemainingCommonRuntimeVariableSpace = mVariableModuleGlobal->CommonRuntimeVariableSpace - mVariableModuleGlobal->CommonVariableTotalSize;\r | |
3157 | }\r | |
3158 | \r | |
3159 | RemainingHwErrVariableSpace = PcdGet32 (PcdHwErrStorageSize) - mVariableModuleGlobal->HwErrVariableTotalSize;\r | |
3160 | //\r | |
3161 | // Check if the free area is below a threshold.\r | |
3162 | //\r | |
3163 | if ((RemainingCommonRuntimeVariableSpace < PcdGet32 (PcdMaxVariableSize))\r | |
3164 | || ((PcdGet32 (PcdHwErrStorageSize) != 0) &&\r | |
3165 | (RemainingHwErrVariableSpace < PcdGet32 (PcdMaxHardwareErrorVariableSize)))){\r | |
3166 | Status = Reclaim (\r | |
3167 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
3168 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
3169 | FALSE,\r | |
3170 | NULL,\r | |
3171 | NULL,\r | |
3172 | 0\r | |
3173 | );\r | |
3174 | ASSERT_EFI_ERROR (Status);\r | |
3175 | }\r | |
3176 | }\r | |
3177 | \r | |
3178 | /**\r | |
3179 | Init non-volatile variable store.\r | |
3180 | \r | |
3181 | @retval EFI_SUCCESS Function successfully executed.\r | |
3182 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
3183 | @retval EFI_VOLUME_CORRUPTED Variable Store or Firmware Volume for Variable Store is corrupted.\r | |
3184 | \r | |
3185 | **/\r | |
3186 | EFI_STATUS\r | |
3187 | InitNonVolatileVariableStore (\r | |
3188 | VOID\r | |
3189 | )\r | |
3190 | {\r | |
3191 | EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r | |
3192 | VARIABLE_HEADER *Variable;\r | |
3193 | VARIABLE_HEADER *NextVariable;\r | |
3194 | EFI_PHYSICAL_ADDRESS VariableStoreBase;\r | |
3195 | UINT64 VariableStoreLength;\r | |
3196 | UINTN VariableSize;\r | |
3197 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
3198 | EFI_PHYSICAL_ADDRESS NvStorageBase;\r | |
3199 | UINT8 *NvStorageData;\r | |
3200 | UINT32 NvStorageSize;\r | |
3201 | FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *FtwLastWriteData;\r | |
3202 | UINT32 BackUpOffset;\r | |
3203 | UINT32 BackUpSize;\r | |
3204 | UINT32 HwErrStorageSize;\r | |
3205 | UINT32 MaxUserNvVariableSpaceSize;\r | |
3206 | UINT32 BoottimeReservedNvVariableSpaceSize;\r | |
3207 | \r | |
3208 | mVariableModuleGlobal->FvbInstance = NULL;\r | |
3209 | \r | |
3210 | //\r | |
3211 | // Allocate runtime memory used for a memory copy of the FLASH region.\r | |
3212 | // Keep the memory and the FLASH in sync as updates occur.\r | |
3213 | //\r | |
3214 | NvStorageSize = PcdGet32 (PcdFlashNvStorageVariableSize);\r | |
3215 | NvStorageData = AllocateRuntimeZeroPool (NvStorageSize);\r | |
3216 | if (NvStorageData == NULL) {\r | |
3217 | return EFI_OUT_OF_RESOURCES;\r | |
3218 | }\r | |
3219 | \r | |
3220 | NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r | |
3221 | if (NvStorageBase == 0) {\r | |
3222 | NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r | |
3223 | }\r | |
3224 | //\r | |
3225 | // Copy NV storage data to the memory buffer.\r | |
3226 | //\r | |
3227 | CopyMem (NvStorageData, (UINT8 *) (UINTN) NvStorageBase, NvStorageSize);\r | |
3228 | \r | |
3229 | //\r | |
3230 | // Check the FTW last write data hob.\r | |
3231 | //\r | |
3232 | GuidHob = GetFirstGuidHob (&gEdkiiFaultTolerantWriteGuid);\r | |
3233 | if (GuidHob != NULL) {\r | |
3234 | FtwLastWriteData = (FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *) GET_GUID_HOB_DATA (GuidHob);\r | |
3235 | if (FtwLastWriteData->TargetAddress == NvStorageBase) {\r | |
3236 | DEBUG ((EFI_D_INFO, "Variable: NV storage is backed up in spare block: 0x%x\n", (UINTN) FtwLastWriteData->SpareAddress));\r | |
3237 | //\r | |
3238 | // Copy the backed up NV storage data to the memory buffer from spare block.\r | |
3239 | //\r | |
3240 | CopyMem (NvStorageData, (UINT8 *) (UINTN) (FtwLastWriteData->SpareAddress), NvStorageSize);\r | |
3241 | } else if ((FtwLastWriteData->TargetAddress > NvStorageBase) &&\r | |
3242 | (FtwLastWriteData->TargetAddress < (NvStorageBase + NvStorageSize))) {\r | |
3243 | //\r | |
3244 | // Flash NV storage from the offset is backed up in spare block.\r | |
3245 | //\r | |
3246 | BackUpOffset = (UINT32) (FtwLastWriteData->TargetAddress - NvStorageBase);\r | |
3247 | BackUpSize = NvStorageSize - BackUpOffset;\r | |
3248 | DEBUG ((EFI_D_INFO, "Variable: High partial NV storage from offset: %x is backed up in spare block: 0x%x\n", BackUpOffset, (UINTN) FtwLastWriteData->SpareAddress));\r | |
3249 | //\r | |
3250 | // Copy the partial backed up NV storage data to the memory buffer from spare block.\r | |
3251 | //\r | |
3252 | CopyMem (NvStorageData + BackUpOffset, (UINT8 *) (UINTN) FtwLastWriteData->SpareAddress, BackUpSize);\r | |
3253 | }\r | |
3254 | }\r | |
3255 | \r | |
3256 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) NvStorageData;\r | |
3257 | \r | |
3258 | //\r | |
3259 | // Check if the Firmware Volume is not corrupted\r | |
3260 | //\r | |
3261 | if ((FvHeader->Signature != EFI_FVH_SIGNATURE) || (!CompareGuid (&gEfiSystemNvDataFvGuid, &FvHeader->FileSystemGuid))) {\r | |
3262 | FreePool (NvStorageData);\r | |
3263 | DEBUG ((EFI_D_ERROR, "Firmware Volume for Variable Store is corrupted\n"));\r | |
3264 | return EFI_VOLUME_CORRUPTED;\r | |
3265 | }\r | |
3266 | \r | |
3267 | VariableStoreBase = (EFI_PHYSICAL_ADDRESS) ((UINTN) FvHeader + FvHeader->HeaderLength);\r | |
3268 | VariableStoreLength = (UINT64) (NvStorageSize - FvHeader->HeaderLength);\r | |
3269 | \r | |
3270 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r | |
3271 | mNvVariableCache = (VARIABLE_STORE_HEADER *) (UINTN) VariableStoreBase;\r | |
3272 | if (GetVariableStoreStatus (mNvVariableCache) != EfiValid) {\r | |
3273 | FreePool (NvStorageData);\r | |
3274 | DEBUG((EFI_D_ERROR, "Variable Store header is corrupted\n"));\r | |
3275 | return EFI_VOLUME_CORRUPTED;\r | |
3276 | }\r | |
3277 | ASSERT(mNvVariableCache->Size == VariableStoreLength);\r | |
3278 | \r | |
3279 | \r | |
3280 | ASSERT (sizeof (VARIABLE_STORE_HEADER) <= VariableStoreLength);\r | |
3281 | \r | |
3282 | HwErrStorageSize = PcdGet32 (PcdHwErrStorageSize);\r | |
3283 | MaxUserNvVariableSpaceSize = PcdGet32 (PcdMaxUserNvVariableSpaceSize);\r | |
3284 | BoottimeReservedNvVariableSpaceSize = PcdGet32 (PcdBoottimeReservedNvVariableSpaceSize);\r | |
3285 | \r | |
3286 | //\r | |
3287 | // Note that in EdkII variable driver implementation, Hardware Error Record type variable\r | |
3288 | // is stored with common variable in the same NV region. So the platform integrator should\r | |
3289 | // ensure that the value of PcdHwErrStorageSize is less than the value of\r | |
3290 | // VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)).\r | |
3291 | //\r | |
3292 | ASSERT (HwErrStorageSize < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)));\r | |
3293 | //\r | |
3294 | // Ensure that the value of PcdMaxUserNvVariableSpaceSize is less than the value of\r | |
3295 | // VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32 (PcdHwErrStorageSize).\r | |
3296 | //\r | |
3297 | ASSERT (MaxUserNvVariableSpaceSize < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - HwErrStorageSize));\r | |
3298 | //\r | |
3299 | // Ensure that the value of PcdBoottimeReservedNvVariableSpaceSize is less than the value of\r | |
3300 | // VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32 (PcdHwErrStorageSize).\r | |
3301 | //\r | |
3302 | ASSERT (BoottimeReservedNvVariableSpaceSize < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - HwErrStorageSize));\r | |
3303 | \r | |
3304 | mVariableModuleGlobal->CommonVariableSpace = ((UINTN) VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - HwErrStorageSize);\r | |
3305 | mVariableModuleGlobal->CommonMaxUserVariableSpace = ((MaxUserNvVariableSpaceSize != 0) ? MaxUserNvVariableSpaceSize : mVariableModuleGlobal->CommonVariableSpace);\r | |
3306 | mVariableModuleGlobal->CommonRuntimeVariableSpace = mVariableModuleGlobal->CommonVariableSpace - BoottimeReservedNvVariableSpaceSize;\r | |
3307 | \r | |
3308 | DEBUG ((EFI_D_INFO, "Variable driver common space: 0x%x 0x%x 0x%x\n", mVariableModuleGlobal->CommonVariableSpace, mVariableModuleGlobal->CommonMaxUserVariableSpace, mVariableModuleGlobal->CommonRuntimeVariableSpace));\r | |
3309 | \r | |
3310 | //\r | |
3311 | // The max variable or hardware error variable size should be < variable store size.\r | |
3312 | //\r | |
3313 | ASSERT(MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32 (PcdMaxHardwareErrorVariableSize)) < VariableStoreLength);\r | |
3314 | \r | |
3315 | //\r | |
3316 | // Parse non-volatile variable data and get last variable offset.\r | |
3317 | //\r | |
3318 | Variable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase);\r | |
3319 | while (IsValidVariableHeader (Variable, GetEndPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase))) {\r | |
3320 | NextVariable = GetNextVariablePtr (Variable);\r | |
3321 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
3322 | if ((Variable->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
3323 | mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r | |
3324 | } else {\r | |
3325 | mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r | |
3326 | }\r | |
3327 | \r | |
3328 | Variable = NextVariable;\r | |
3329 | }\r | |
3330 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) Variable - (UINTN) VariableStoreBase;\r | |
3331 | \r | |
3332 | return EFI_SUCCESS;\r | |
3333 | }\r | |
3334 | \r | |
3335 | /**\r | |
3336 | Flush the HOB variable to flash.\r | |
3337 | \r | |
3338 | @param[in] VariableName Name of variable has been updated or deleted.\r | |
3339 | @param[in] VendorGuid Guid of variable has been updated or deleted.\r | |
3340 | \r | |
3341 | **/\r | |
3342 | VOID\r | |
3343 | FlushHobVariableToFlash (\r | |
3344 | IN CHAR16 *VariableName,\r | |
3345 | IN EFI_GUID *VendorGuid\r | |
3346 | )\r | |
3347 | {\r | |
3348 | EFI_STATUS Status;\r | |
3349 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
3350 | VARIABLE_HEADER *Variable;\r | |
3351 | VOID *VariableData;\r | |
3352 | BOOLEAN ErrorFlag;\r | |
3353 | \r | |
3354 | ErrorFlag = FALSE;\r | |
3355 | \r | |
3356 | //\r | |
3357 | // Flush the HOB variable to flash.\r | |
3358 | //\r | |
3359 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r | |
3360 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r | |
3361 | //\r | |
3362 | // Set HobVariableBase to 0, it can avoid SetVariable to call back.\r | |
3363 | //\r | |
3364 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = 0;\r | |
3365 | for ( Variable = GetStartPointer (VariableStoreHeader)\r | |
3366 | ; IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))\r | |
3367 | ; Variable = GetNextVariablePtr (Variable)\r | |
3368 | ) {\r | |
3369 | if (Variable->State != VAR_ADDED) {\r | |
3370 | //\r | |
3371 | // The HOB variable has been set to DELETED state in local.\r | |
3372 | //\r | |
3373 | continue;\r | |
3374 | }\r | |
3375 | ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);\r | |
3376 | if (VendorGuid == NULL || VariableName == NULL ||\r | |
3377 | !CompareGuid (VendorGuid, &Variable->VendorGuid) ||\r | |
3378 | StrCmp (VariableName, GetVariableNamePtr (Variable)) != 0) {\r | |
3379 | VariableData = GetVariableDataPtr (Variable);\r | |
3380 | Status = VariableServiceSetVariable (\r | |
3381 | GetVariableNamePtr (Variable),\r | |
3382 | &Variable->VendorGuid,\r | |
3383 | Variable->Attributes,\r | |
3384 | Variable->DataSize,\r | |
3385 | VariableData\r | |
3386 | );\r | |
3387 | DEBUG ((EFI_D_INFO, "Variable driver flush the HOB variable to flash: %g %s %r\n", &Variable->VendorGuid, GetVariableNamePtr (Variable), Status));\r | |
3388 | } else {\r | |
3389 | //\r | |
3390 | // The updated or deleted variable is matched with the HOB variable.\r | |
3391 | // Don't break here because we will try to set other HOB variables\r | |
3392 | // since this variable could be set successfully.\r | |
3393 | //\r | |
3394 | Status = EFI_SUCCESS;\r | |
3395 | }\r | |
3396 | if (!EFI_ERROR (Status)) {\r | |
3397 | //\r | |
3398 | // If set variable successful, or the updated or deleted variable is matched with the HOB variable,\r | |
3399 | // set the HOB variable to DELETED state in local.\r | |
3400 | //\r | |
3401 | DEBUG ((EFI_D_INFO, "Variable driver set the HOB variable to DELETED state in local: %g %s\n", &Variable->VendorGuid, GetVariableNamePtr (Variable)));\r | |
3402 | Variable->State &= VAR_DELETED;\r | |
3403 | } else {\r | |
3404 | ErrorFlag = TRUE;\r | |
3405 | }\r | |
3406 | }\r | |
3407 | if (ErrorFlag) {\r | |
3408 | //\r | |
3409 | // We still have HOB variable(s) not flushed in flash.\r | |
3410 | //\r | |
3411 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStoreHeader;\r | |
3412 | } else {\r | |
3413 | //\r | |
3414 | // All HOB variables have been flushed in flash.\r | |
3415 | //\r | |
3416 | DEBUG ((EFI_D_INFO, "Variable driver: all HOB variables have been flushed in flash.\n"));\r | |
3417 | if (!AtRuntime ()) {\r | |
3418 | FreePool ((VOID *) VariableStoreHeader);\r | |
3419 | }\r | |
3420 | }\r | |
3421 | }\r | |
3422 | \r | |
3423 | }\r | |
3424 | \r | |
3425 | /**\r | |
3426 | Initializes variable write service after FTW was ready.\r | |
3427 | \r | |
3428 | @retval EFI_SUCCESS Function successfully executed.\r | |
3429 | @retval Others Fail to initialize the variable service.\r | |
3430 | \r | |
3431 | **/\r | |
3432 | EFI_STATUS\r | |
3433 | VariableWriteServiceInitialize (\r | |
3434 | VOID\r | |
3435 | )\r | |
3436 | {\r | |
3437 | EFI_STATUS Status;\r | |
3438 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
3439 | UINTN Index;\r | |
3440 | UINT8 Data;\r | |
3441 | EFI_PHYSICAL_ADDRESS VariableStoreBase;\r | |
3442 | EFI_PHYSICAL_ADDRESS NvStorageBase;\r | |
3443 | \r | |
3444 | NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r | |
3445 | if (NvStorageBase == 0) {\r | |
3446 | NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r | |
3447 | }\r | |
3448 | VariableStoreBase = NvStorageBase + (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(NvStorageBase))->HeaderLength);\r | |
3449 | \r | |
3450 | //\r | |
3451 | // Let NonVolatileVariableBase point to flash variable store base directly after FTW ready.\r | |
3452 | //\r | |
3453 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r | |
3454 | VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r | |
3455 | \r | |
3456 | //\r | |
3457 | // Check if the free area is really free.\r | |
3458 | //\r | |
3459 | for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {\r | |
3460 | Data = ((UINT8 *) mNvVariableCache)[Index];\r | |
3461 | if (Data != 0xff) {\r | |
3462 | //\r | |
3463 | // There must be something wrong in variable store, do reclaim operation.\r | |
3464 | //\r | |
3465 | Status = Reclaim (\r | |
3466 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
3467 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
3468 | FALSE,\r | |
3469 | NULL,\r | |
3470 | NULL,\r | |
3471 | 0\r | |
3472 | );\r | |
3473 | if (EFI_ERROR (Status)) {\r | |
3474 | return Status;\r | |
3475 | }\r | |
3476 | break;\r | |
3477 | }\r | |
3478 | }\r | |
3479 | \r | |
3480 | FlushHobVariableToFlash (NULL, NULL);\r | |
3481 | \r | |
3482 | return EFI_SUCCESS;\r | |
3483 | }\r | |
3484 | \r | |
3485 | \r | |
3486 | /**\r | |
3487 | Initializes variable store area for non-volatile and volatile variable.\r | |
3488 | \r | |
3489 | @retval EFI_SUCCESS Function successfully executed.\r | |
3490 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
3491 | \r | |
3492 | **/\r | |
3493 | EFI_STATUS\r | |
3494 | VariableCommonInitialize (\r | |
3495 | VOID\r | |
3496 | )\r | |
3497 | {\r | |
3498 | EFI_STATUS Status;\r | |
3499 | VARIABLE_STORE_HEADER *VolatileVariableStore;\r | |
3500 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
3501 | UINT64 VariableStoreLength;\r | |
3502 | UINTN ScratchSize;\r | |
3503 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
3504 | \r | |
3505 | //\r | |
3506 | // Allocate runtime memory for variable driver global structure.\r | |
3507 | //\r | |
3508 | mVariableModuleGlobal = AllocateRuntimeZeroPool (sizeof (VARIABLE_MODULE_GLOBAL));\r | |
3509 | if (mVariableModuleGlobal == NULL) {\r | |
3510 | return EFI_OUT_OF_RESOURCES;\r | |
3511 | }\r | |
3512 | \r | |
3513 | InitializeLock (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r | |
3514 | \r | |
3515 | //\r | |
3516 | // Get HOB variable store.\r | |
3517 | //\r | |
3518 | GuidHob = GetFirstGuidHob (&gEfiVariableGuid);\r | |
3519 | if (GuidHob != NULL) {\r | |
3520 | VariableStoreHeader = GET_GUID_HOB_DATA (GuidHob);\r | |
3521 | VariableStoreLength = (UINT64) (GuidHob->Header.HobLength - sizeof (EFI_HOB_GUID_TYPE));\r | |
3522 | if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r | |
3523 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) AllocateRuntimeCopyPool ((UINTN) VariableStoreLength, (VOID *) VariableStoreHeader);\r | |
3524 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase == 0) {\r | |
3525 | FreePool (mVariableModuleGlobal);\r | |
3526 | return EFI_OUT_OF_RESOURCES;\r | |
3527 | }\r | |
3528 | } else {\r | |
3529 | DEBUG ((EFI_D_ERROR, "HOB Variable Store header is corrupted!\n"));\r | |
3530 | }\r | |
3531 | }\r | |
3532 | \r | |
3533 | //\r | |
3534 | // Allocate memory for volatile variable store, note that there is a scratch space to store scratch data.\r | |
3535 | //\r | |
3536 | ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32 (PcdMaxHardwareErrorVariableSize));\r | |
3537 | VolatileVariableStore = AllocateRuntimePool (PcdGet32 (PcdVariableStoreSize) + ScratchSize);\r | |
3538 | if (VolatileVariableStore == NULL) {\r | |
3539 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r | |
3540 | FreePool ((VOID *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase);\r | |
3541 | }\r | |
3542 | FreePool (mVariableModuleGlobal);\r | |
3543 | return EFI_OUT_OF_RESOURCES;\r | |
3544 | }\r | |
3545 | \r | |
3546 | SetMem (VolatileVariableStore, PcdGet32 (PcdVariableStoreSize) + ScratchSize, 0xff);\r | |
3547 | \r | |
3548 | //\r | |
3549 | // Initialize Variable Specific Data.\r | |
3550 | //\r | |
3551 | mVariableModuleGlobal->VariableGlobal.VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r | |
3552 | mVariableModuleGlobal->VolatileLastVariableOffset = (UINTN) GetStartPointer (VolatileVariableStore) - (UINTN) VolatileVariableStore;\r | |
3553 | \r | |
3554 | CopyGuid (&VolatileVariableStore->Signature, &gEfiVariableGuid);\r | |
3555 | VolatileVariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r | |
3556 | VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r | |
3557 | VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r | |
3558 | VolatileVariableStore->Reserved = 0;\r | |
3559 | VolatileVariableStore->Reserved1 = 0;\r | |
3560 | \r | |
3561 | //\r | |
3562 | // Init non-volatile variable store.\r | |
3563 | //\r | |
3564 | Status = InitNonVolatileVariableStore ();\r | |
3565 | if (EFI_ERROR (Status)) {\r | |
3566 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r | |
3567 | FreePool ((VOID *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase);\r | |
3568 | }\r | |
3569 | FreePool (mVariableModuleGlobal);\r | |
3570 | FreePool (VolatileVariableStore);\r | |
3571 | }\r | |
3572 | \r | |
3573 | return Status;\r | |
3574 | }\r | |
3575 | \r | |
3576 | \r | |
3577 | /**\r | |
3578 | Get the proper fvb handle and/or fvb protocol by the given Flash address.\r | |
3579 | \r | |
3580 | @param[in] Address The Flash address.\r | |
3581 | @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r | |
3582 | @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r | |
3583 | \r | |
3584 | **/\r | |
3585 | EFI_STATUS\r | |
3586 | GetFvbInfoByAddress (\r | |
3587 | IN EFI_PHYSICAL_ADDRESS Address,\r | |
3588 | OUT EFI_HANDLE *FvbHandle OPTIONAL,\r | |
3589 | OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r | |
3590 | )\r | |
3591 | {\r | |
3592 | EFI_STATUS Status;\r | |
3593 | EFI_HANDLE *HandleBuffer;\r | |
3594 | UINTN HandleCount;\r | |
3595 | UINTN Index;\r | |
3596 | EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r | |
3597 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
3598 | EFI_FVB_ATTRIBUTES_2 Attributes;\r | |
3599 | UINTN BlockSize;\r | |
3600 | UINTN NumberOfBlocks;\r | |
3601 | \r | |
3602 | HandleBuffer = NULL;\r | |
3603 | \r | |
3604 | //\r | |
3605 | // Get all FVB handles.\r | |
3606 | //\r | |
3607 | Status = GetFvbCountAndBuffer (&HandleCount, &HandleBuffer);\r | |
3608 | if (EFI_ERROR (Status)) {\r | |
3609 | return EFI_NOT_FOUND;\r | |
3610 | }\r | |
3611 | \r | |
3612 | //\r | |
3613 | // Get the FVB to access variable store.\r | |
3614 | //\r | |
3615 | Fvb = NULL;\r | |
3616 | for (Index = 0; Index < HandleCount; Index += 1, Status = EFI_NOT_FOUND, Fvb = NULL) {\r | |
3617 | Status = GetFvbByHandle (HandleBuffer[Index], &Fvb);\r | |
3618 | if (EFI_ERROR (Status)) {\r | |
3619 | Status = EFI_NOT_FOUND;\r | |
3620 | break;\r | |
3621 | }\r | |
3622 | \r | |
3623 | //\r | |
3624 | // Ensure this FVB protocol supported Write operation.\r | |
3625 | //\r | |
3626 | Status = Fvb->GetAttributes (Fvb, &Attributes);\r | |
3627 | if (EFI_ERROR (Status) || ((Attributes & EFI_FVB2_WRITE_STATUS) == 0)) {\r | |
3628 | continue;\r | |
3629 | }\r | |
3630 | \r | |
3631 | //\r | |
3632 | // Compare the address and select the right one.\r | |
3633 | //\r | |
3634 | Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r | |
3635 | if (EFI_ERROR (Status)) {\r | |
3636 | continue;\r | |
3637 | }\r | |
3638 | \r | |
3639 | //\r | |
3640 | // Assume one FVB has one type of BlockSize.\r | |
3641 | //\r | |
3642 | Status = Fvb->GetBlockSize (Fvb, 0, &BlockSize, &NumberOfBlocks);\r | |
3643 | if (EFI_ERROR (Status)) {\r | |
3644 | continue;\r | |
3645 | }\r | |
3646 | \r | |
3647 | if ((Address >= FvbBaseAddress) && (Address < (FvbBaseAddress + BlockSize * NumberOfBlocks))) {\r | |
3648 | if (FvbHandle != NULL) {\r | |
3649 | *FvbHandle = HandleBuffer[Index];\r | |
3650 | }\r | |
3651 | if (FvbProtocol != NULL) {\r | |
3652 | *FvbProtocol = Fvb;\r | |
3653 | }\r | |
3654 | Status = EFI_SUCCESS;\r | |
3655 | break;\r | |
3656 | }\r | |
3657 | }\r | |
3658 | FreePool (HandleBuffer);\r | |
3659 | \r | |
3660 | if (Fvb == NULL) {\r | |
3661 | Status = EFI_NOT_FOUND;\r | |
3662 | }\r | |
3663 | \r | |
3664 | return Status; \r | |
3665 | }\r | |
3666 | \r |