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052ad7e1 | 1 | /** @file\r |
504214c4 LG |
2 | \r |
3 | Implement all four UEFI Runtime Variable services for the nonvolatile\r | |
4 | and volatile storage space and install variable architecture protocol.\r | |
052ad7e1 | 5 | \r |
892b7f90 | 6 | Copyright (c) 2006 - 2009, Intel Corporation \r |
504214c4 LG |
7 | All rights reserved. This program and the accompanying materials \r |
8 | are licensed and made available under the terms and conditions of the BSD License \r | |
9 | which accompanies this distribution. The full text of the license may be found at \r | |
10 | http://opensource.org/licenses/bsd-license.php \r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
8d3a5c82 | 14 | \r |
052ad7e1 | 15 | **/\r |
8d3a5c82 | 16 | \r |
8d3a5c82 | 17 | #include "Variable.h"\r |
33a5a666 | 18 | \r |
7800593d | 19 | VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r |
052ad7e1 A |
20 | EFI_EVENT mVirtualAddressChangeEvent = NULL;\r |
21 | EFI_HANDLE mHandle = NULL;\r | |
8d3a5c82 | 22 | \r |
7c80e839 | 23 | ///\r |
24 | /// The current Hii implementation accesses this variable many times on every boot.\r | |
25 | /// Other common variables are only accessed once. This is why this cache algorithm\r | |
26 | /// only targets a single variable. Probably to get an performance improvement out of\r | |
27 | /// a Cache you would need a cache that improves the search performance for a variable.\r | |
28 | ///\r | |
aa79b0b3 | 29 | VARIABLE_CACHE_ENTRY mVariableCache[] = {\r |
30 | {\r | |
31 | &gEfiGlobalVariableGuid,\r | |
32 | L"Lang",\r | |
33 | 0x00000000,\r | |
34 | 0x00,\r | |
35 | NULL\r | |
36 | }\r | |
37 | };\r | |
38 | \r | |
45f6c85b | 39 | VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r |
8a9e0b72 | 40 | EFI_EVENT mFvbRegistration = NULL;\r |
41 | \r | |
aa79b0b3 | 42 | \r |
7c80e839 | 43 | /**\r |
44 | Acquires lock only at boot time. Simply returns at runtime.\r | |
45 | \r | |
46 | This is a temperary function which will be removed when\r | |
47 | EfiAcquireLock() in UefiLib can handle the call in UEFI\r | |
48 | Runtimer driver in RT phase.\r | |
49 | It calls EfiAcquireLock() at boot time, and simply returns\r | |
50 | at runtime.\r | |
51 | \r | |
52 | @param Lock A pointer to the lock to acquire\r | |
53 | \r | |
54 | **/\r | |
8d3a5c82 | 55 | VOID\r |
56 | AcquireLockOnlyAtBootTime (\r | |
57 | IN EFI_LOCK *Lock\r | |
58 | )\r | |
59 | {\r | |
60 | if (!EfiAtRuntime ()) {\r | |
61 | EfiAcquireLock (Lock);\r | |
62 | }\r | |
63 | }\r | |
64 | \r | |
7c80e839 | 65 | /**\r |
66 | Releases lock only at boot time. Simply returns at runtime.\r | |
67 | \r | |
68 | This is a temperary function which will be removed when\r | |
69 | EfiReleaseLock() in UefiLib can handle the call in UEFI\r | |
70 | Runtimer driver in RT phase.\r | |
71 | It calls EfiReleaseLock() at boot time, and simply returns\r | |
72 | at runtime.\r | |
73 | \r | |
74 | @param Lock A pointer to the lock to release\r | |
75 | \r | |
76 | **/\r | |
8d3a5c82 | 77 | VOID\r |
78 | ReleaseLockOnlyAtBootTime (\r | |
79 | IN EFI_LOCK *Lock\r | |
80 | )\r | |
81 | {\r | |
82 | if (!EfiAtRuntime ()) {\r | |
83 | EfiReleaseLock (Lock);\r | |
84 | }\r | |
85 | }\r | |
86 | \r | |
33a5a666 | 87 | \r |
052ad7e1 A |
88 | /**\r |
89 | Routine used to track statistical information about variable usage. \r | |
90 | The data is stored in the EFI system table so it can be accessed later.\r | |
91 | VariableInfo.efi can dump out the table. Only Boot Services variable \r | |
92 | accesses are tracked by this code. The PcdVariableCollectStatistics\r | |
93 | build flag controls if this feature is enabled. \r | |
94 | \r | |
95 | A read that hits in the cache will have Read and Cache true for \r | |
96 | the transaction. Data is allocated by this routine, but never\r | |
97 | freed.\r | |
98 | \r | |
99 | @param[in] VariableName Name of the Variable to track\r | |
100 | @param[in] VendorGuid Guid of the Variable to track\r | |
101 | @param[in] Volatile TRUE if volatile FALSE if non-volatile\r | |
102 | @param[in] Read TRUE if GetVariable() was called\r | |
103 | @param[in] Write TRUE if SetVariable() was called\r | |
104 | @param[in] Delete TRUE if deleted via SetVariable()\r | |
105 | @param[in] Cache TRUE for a cache hit.\r | |
106 | \r | |
107 | **/\r | |
33a5a666 A |
108 | VOID\r |
109 | UpdateVariableInfo (\r | |
110 | IN CHAR16 *VariableName,\r | |
111 | IN EFI_GUID *VendorGuid,\r | |
112 | IN BOOLEAN Volatile,\r | |
113 | IN BOOLEAN Read,\r | |
114 | IN BOOLEAN Write,\r | |
115 | IN BOOLEAN Delete,\r | |
116 | IN BOOLEAN Cache\r | |
117 | )\r | |
118 | {\r | |
119 | VARIABLE_INFO_ENTRY *Entry;\r | |
120 | \r | |
121 | if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r | |
122 | \r | |
123 | if (EfiAtRuntime ()) {\r | |
124 | // Don't collect statistics at runtime\r | |
125 | return;\r | |
126 | }\r | |
127 | \r | |
128 | if (gVariableInfo == NULL) {\r | |
052ad7e1 A |
129 | //\r |
130 | // on the first call allocate a entry and place a pointer to it in\r | |
131 | // the EFI System Table\r | |
132 | //\r | |
33a5a666 | 133 | gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r |
052ad7e1 A |
134 | ASSERT (gVariableInfo != NULL);\r |
135 | \r | |
33a5a666 A |
136 | CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);\r |
137 | gVariableInfo->Name = AllocatePool (StrLen (VariableName));\r | |
e6c4ef13 | 138 | ASSERT (gVariableInfo->Name != NULL);\r |
33a5a666 A |
139 | StrCpy (gVariableInfo->Name, VariableName);\r |
140 | gVariableInfo->Volatile = Volatile;\r | |
141 | \r | |
3709c4cd | 142 | gBS->InstallConfigurationTable (&gEfiVariableGuid, gVariableInfo);\r |
33a5a666 A |
143 | }\r |
144 | \r | |
145 | \r | |
146 | for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {\r | |
147 | if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {\r | |
148 | if (StrCmp (VariableName, Entry->Name) == 0) {\r | |
149 | if (Read) {\r | |
150 | Entry->ReadCount++;\r | |
151 | }\r | |
152 | if (Write) {\r | |
153 | Entry->WriteCount++;\r | |
154 | }\r | |
155 | if (Delete) {\r | |
156 | Entry->DeleteCount++;\r | |
157 | }\r | |
158 | if (Cache) {\r | |
159 | Entry->CacheCount++;\r | |
160 | }\r | |
161 | \r | |
162 | return;\r | |
163 | }\r | |
164 | }\r | |
165 | \r | |
166 | if (Entry->Next == NULL) {\r | |
052ad7e1 A |
167 | //\r |
168 | // If the entry is not in the table add it.\r | |
169 | // Next iteration of the loop will fill in the data\r | |
170 | //\r | |
33a5a666 | 171 | Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r |
052ad7e1 | 172 | ASSERT (Entry->Next != NULL);\r |
33a5a666 A |
173 | \r |
174 | CopyGuid (&Entry->Next->VendorGuid, VendorGuid);\r | |
175 | Entry->Next->Name = AllocatePool (StrLen (VariableName));\r | |
e6c4ef13 | 176 | ASSERT (Entry->Next->Name != NULL);\r |
33a5a666 A |
177 | StrCpy (Entry->Next->Name, VariableName);\r |
178 | Entry->Next->Volatile = Volatile;\r | |
179 | }\r | |
180 | \r | |
181 | }\r | |
182 | }\r | |
183 | }\r | |
184 | \r | |
185 | \r | |
7c80e839 | 186 | /**\r |
8d3a5c82 | 187 | \r |
188 | This code checks if variable header is valid or not.\r | |
189 | \r | |
7c80e839 | 190 | @param Variable Pointer to the Variable Header.\r |
8d3a5c82 | 191 | \r |
7c80e839 | 192 | @retval TRUE Variable header is valid.\r |
193 | @retval FALSE Variable header is not valid.\r | |
8d3a5c82 | 194 | \r |
7c80e839 | 195 | **/\r |
196 | BOOLEAN\r | |
197 | IsValidVariableHeader (\r | |
198 | IN VARIABLE_HEADER *Variable\r | |
199 | )\r | |
8d3a5c82 | 200 | {\r |
fdb7765f | 201 | if (Variable == NULL || Variable->StartId != VARIABLE_DATA) {\r |
8d3a5c82 | 202 | return FALSE;\r |
203 | }\r | |
204 | \r | |
205 | return TRUE;\r | |
206 | }\r | |
207 | \r | |
052ad7e1 | 208 | \r |
7c80e839 | 209 | /**\r |
210 | \r | |
211 | This function writes data to the FWH at the correct LBA even if the LBAs\r | |
212 | are fragmented.\r | |
213 | \r | |
214 | @param Global Pointer to VARAIBLE_GLOBAL structure\r | |
215 | @param Volatile Point out the Variable is Volatile or Non-Volatile\r | |
216 | @param SetByIndex TRUE if target pointer is given as index\r | |
217 | FALSE if target pointer is absolute\r | |
8a9e0b72 | 218 | @param Fvb Pointer to the writable FVB protocol\r |
7c80e839 | 219 | @param DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r |
220 | structure\r | |
221 | @param DataSize Size of data to be written\r | |
222 | @param Buffer Pointer to the buffer from which data is written\r | |
223 | \r | |
224 | @retval EFI_INVALID_PARAMETER Parameters not valid\r | |
225 | @retval EFI_SUCCESS Variable store successfully updated\r | |
226 | \r | |
227 | **/\r | |
8d3a5c82 | 228 | EFI_STATUS\r |
8d3a5c82 | 229 | UpdateVariableStore (\r |
8a9e0b72 | 230 | IN VARIABLE_GLOBAL *Global,\r |
231 | IN BOOLEAN Volatile,\r | |
232 | IN BOOLEAN SetByIndex,\r | |
233 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r | |
234 | IN UINTN DataPtrIndex,\r | |
235 | IN UINT32 DataSize,\r | |
236 | IN UINT8 *Buffer\r | |
8d3a5c82 | 237 | )\r |
8d3a5c82 | 238 | {\r |
239 | EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r | |
240 | UINTN BlockIndex2;\r | |
241 | UINTN LinearOffset;\r | |
242 | UINTN CurrWriteSize;\r | |
243 | UINTN CurrWritePtr;\r | |
244 | UINT8 *CurrBuffer;\r | |
245 | EFI_LBA LbaNumber;\r | |
246 | UINTN Size;\r | |
247 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
248 | VARIABLE_STORE_HEADER *VolatileBase;\r | |
249 | EFI_PHYSICAL_ADDRESS FvVolHdr;\r | |
250 | EFI_PHYSICAL_ADDRESS DataPtr;\r | |
251 | EFI_STATUS Status;\r | |
252 | \r | |
253 | FwVolHeader = NULL;\r | |
254 | DataPtr = DataPtrIndex;\r | |
255 | \r | |
256 | //\r | |
257 | // Check if the Data is Volatile\r | |
258 | //\r | |
259 | if (!Volatile) {\r | |
8a9e0b72 | 260 | Status = Fvb->GetPhysicalAddress(Fvb, &FvVolHdr);\r |
261 | ASSERT_EFI_ERROR (Status);\r | |
262 | \r | |
8d3a5c82 | 263 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvVolHdr);\r |
264 | //\r | |
265 | // Data Pointer should point to the actual Address where data is to be\r | |
266 | // written\r | |
267 | //\r | |
268 | if (SetByIndex) {\r | |
052ad7e1 | 269 | DataPtr += mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r |
8d3a5c82 | 270 | }\r |
271 | \r | |
272 | if ((DataPtr + DataSize) >= ((EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) FwVolHeader + FwVolHeader->FvLength))) {\r | |
273 | return EFI_INVALID_PARAMETER;\r | |
274 | }\r | |
275 | } else {\r | |
276 | //\r | |
277 | // Data Pointer should point to the actual Address where data is to be\r | |
278 | // written\r | |
279 | //\r | |
052ad7e1 | 280 | VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r |
8d3a5c82 | 281 | if (SetByIndex) {\r |
052ad7e1 | 282 | DataPtr += mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r |
8d3a5c82 | 283 | }\r |
284 | \r | |
285 | if ((DataPtr + DataSize) >= ((UINTN) ((UINT8 *) VolatileBase + VolatileBase->Size))) {\r | |
286 | return EFI_INVALID_PARAMETER;\r | |
287 | }\r | |
c6492839 | 288 | \r |
289 | //\r | |
290 | // If Volatile Variable just do a simple mem copy.\r | |
291 | // \r | |
292 | CopyMem ((UINT8 *)(UINTN)DataPtr, Buffer, DataSize);\r | |
8d3a5c82 | 293 | return EFI_SUCCESS;\r |
294 | }\r | |
c6492839 | 295 | \r |
8d3a5c82 | 296 | //\r |
297 | // If we are here we are dealing with Non-Volatile Variables\r | |
298 | //\r | |
299 | LinearOffset = (UINTN) FwVolHeader;\r | |
300 | CurrWritePtr = (UINTN) DataPtr;\r | |
301 | CurrWriteSize = DataSize;\r | |
302 | CurrBuffer = Buffer;\r | |
303 | LbaNumber = 0;\r | |
304 | \r | |
305 | if (CurrWritePtr < LinearOffset) {\r | |
306 | return EFI_INVALID_PARAMETER;\r | |
307 | }\r | |
308 | \r | |
309 | for (PtrBlockMapEntry = FwVolHeader->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r | |
310 | for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r | |
311 | //\r | |
312 | // Check to see if the Variable Writes are spanning through multiple\r | |
313 | // blocks.\r | |
314 | //\r | |
315 | if ((CurrWritePtr >= LinearOffset) && (CurrWritePtr < LinearOffset + PtrBlockMapEntry->Length)) {\r | |
316 | if ((CurrWritePtr + CurrWriteSize) <= (LinearOffset + PtrBlockMapEntry->Length)) {\r | |
8a9e0b72 | 317 | Status = Fvb->Write (\r |
318 | Fvb,\r | |
8d3a5c82 | 319 | LbaNumber,\r |
320 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
321 | &CurrWriteSize,\r | |
322 | CurrBuffer\r | |
323 | );\r | |
8a9e0b72 | 324 | return Status;\r |
8d3a5c82 | 325 | } else {\r |
326 | Size = (UINT32) (LinearOffset + PtrBlockMapEntry->Length - CurrWritePtr);\r | |
8a9e0b72 | 327 | Status = Fvb->Write (\r |
328 | Fvb,\r | |
8d3a5c82 | 329 | LbaNumber,\r |
330 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
331 | &Size,\r | |
332 | CurrBuffer\r | |
333 | );\r | |
334 | if (EFI_ERROR (Status)) {\r | |
335 | return Status;\r | |
336 | }\r | |
337 | \r | |
338 | CurrWritePtr = LinearOffset + PtrBlockMapEntry->Length;\r | |
339 | CurrBuffer = CurrBuffer + Size;\r | |
340 | CurrWriteSize = CurrWriteSize - Size;\r | |
341 | }\r | |
342 | }\r | |
343 | \r | |
344 | LinearOffset += PtrBlockMapEntry->Length;\r | |
345 | LbaNumber++;\r | |
346 | }\r | |
347 | }\r | |
348 | \r | |
349 | return EFI_SUCCESS;\r | |
350 | }\r | |
351 | \r | |
052ad7e1 | 352 | \r |
7c80e839 | 353 | /**\r |
8d3a5c82 | 354 | \r |
355 | This code gets the current status of Variable Store.\r | |
356 | \r | |
7c80e839 | 357 | @param VarStoreHeader Pointer to the Variable Store Header.\r |
8d3a5c82 | 358 | \r |
7c80e839 | 359 | @retval EfiRaw Variable store status is raw\r |
360 | @retval EfiValid Variable store status is valid\r | |
361 | @retval EfiInvalid Variable store status is invalid\r | |
8d3a5c82 | 362 | \r |
7c80e839 | 363 | **/\r |
364 | VARIABLE_STORE_STATUS\r | |
365 | GetVariableStoreStatus (\r | |
366 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
367 | )\r | |
8d3a5c82 | 368 | {\r |
3709c4cd | 369 | if (CompareGuid (&VarStoreHeader->Signature, &gEfiVariableGuid) &&\r |
8d3a5c82 | 370 | VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r |
371 | VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r | |
372 | ) {\r | |
373 | \r | |
374 | return EfiValid;\r | |
3709c4cd | 375 | } else if (((UINT32 *)(&VarStoreHeader->Signature))[0] == 0xffffffff &&\r |
376 | ((UINT32 *)(&VarStoreHeader->Signature))[1] == 0xffffffff &&\r | |
377 | ((UINT32 *)(&VarStoreHeader->Signature))[2] == 0xffffffff &&\r | |
378 | ((UINT32 *)(&VarStoreHeader->Signature))[3] == 0xffffffff &&\r | |
379 | VarStoreHeader->Size == 0xffffffff &&\r | |
380 | VarStoreHeader->Format == 0xff &&\r | |
381 | VarStoreHeader->State == 0xff\r | |
8d3a5c82 | 382 | ) {\r |
383 | \r | |
384 | return EfiRaw;\r | |
385 | } else {\r | |
386 | return EfiInvalid;\r | |
387 | }\r | |
388 | }\r | |
389 | \r | |
130e2569 | 390 | \r |
7c80e839 | 391 | /**\r |
130e2569 | 392 | \r |
393 | This code gets the size of name of variable.\r | |
394 | \r | |
7c80e839 | 395 | @param Variable Pointer to the Variable Header\r |
130e2569 | 396 | \r |
7c80e839 | 397 | @return UINTN Size of variable in bytes\r |
130e2569 | 398 | \r |
7c80e839 | 399 | **/\r |
400 | UINTN\r | |
401 | NameSizeOfVariable (\r | |
402 | IN VARIABLE_HEADER *Variable\r | |
403 | )\r | |
130e2569 | 404 | {\r |
405 | if (Variable->State == (UINT8) (-1) ||\r | |
7c80e839 | 406 | Variable->DataSize == (UINT32) (-1) ||\r |
407 | Variable->NameSize == (UINT32) (-1) ||\r | |
408 | Variable->Attributes == (UINT32) (-1)) {\r | |
130e2569 | 409 | return 0;\r |
410 | }\r | |
411 | return (UINTN) Variable->NameSize;\r | |
412 | }\r | |
413 | \r | |
7c80e839 | 414 | /**\r |
130e2569 | 415 | \r |
7c80e839 | 416 | This code gets the size of variable data.\r |
130e2569 | 417 | \r |
7c80e839 | 418 | @param Variable Pointer to the Variable Header\r |
130e2569 | 419 | \r |
7c80e839 | 420 | @return Size of variable in bytes\r |
130e2569 | 421 | \r |
7c80e839 | 422 | **/\r |
423 | UINTN\r | |
424 | DataSizeOfVariable (\r | |
425 | IN VARIABLE_HEADER *Variable\r | |
426 | )\r | |
130e2569 | 427 | {\r |
7c80e839 | 428 | if (Variable->State == (UINT8) (-1) ||\r |
429 | Variable->DataSize == (UINT32) (-1) ||\r | |
430 | Variable->NameSize == (UINT32) (-1) ||\r | |
431 | Variable->Attributes == (UINT32) (-1)) {\r | |
130e2569 | 432 | return 0;\r |
433 | }\r | |
434 | return (UINTN) Variable->DataSize;\r | |
435 | }\r | |
436 | \r | |
7c80e839 | 437 | /**\r |
130e2569 | 438 | \r |
439 | This code gets the pointer to the variable name.\r | |
440 | \r | |
7c80e839 | 441 | @param Variable Pointer to the Variable Header\r |
130e2569 | 442 | \r |
7c80e839 | 443 | @return Pointer to Variable Name which is Unicode encoding\r |
130e2569 | 444 | \r |
7c80e839 | 445 | **/\r |
446 | CHAR16 *\r | |
447 | GetVariableNamePtr (\r | |
448 | IN VARIABLE_HEADER *Variable\r | |
449 | )\r | |
130e2569 | 450 | {\r |
451 | \r | |
452 | return (CHAR16 *) (Variable + 1);\r | |
453 | }\r | |
454 | \r | |
7c80e839 | 455 | /**\r |
8d3a5c82 | 456 | \r |
457 | This code gets the pointer to the variable data.\r | |
458 | \r | |
7c80e839 | 459 | @param Variable Pointer to the Variable Header\r |
8d3a5c82 | 460 | \r |
7c80e839 | 461 | @return Pointer to Variable Data\r |
8d3a5c82 | 462 | \r |
7c80e839 | 463 | **/\r |
464 | UINT8 *\r | |
465 | GetVariableDataPtr (\r | |
466 | IN VARIABLE_HEADER *Variable\r | |
467 | )\r | |
8d3a5c82 | 468 | {\r |
130e2569 | 469 | UINTN Value;\r |
470 | \r | |
8d3a5c82 | 471 | //\r |
472 | // Be careful about pad size for alignment\r | |
473 | //\r | |
130e2569 | 474 | Value = (UINTN) GetVariableNamePtr (Variable);\r |
475 | Value += NameSizeOfVariable (Variable);\r | |
476 | Value += GET_PAD_SIZE (NameSizeOfVariable (Variable));\r | |
477 | \r | |
478 | return (UINT8 *) Value;\r | |
8d3a5c82 | 479 | }\r |
480 | \r | |
052ad7e1 | 481 | \r |
7c80e839 | 482 | /**\r |
8d3a5c82 | 483 | \r |
484 | This code gets the pointer to the next variable header.\r | |
485 | \r | |
7c80e839 | 486 | @param Variable Pointer to the Variable Header\r |
8d3a5c82 | 487 | \r |
7c80e839 | 488 | @return Pointer to next variable header\r |
8d3a5c82 | 489 | \r |
7c80e839 | 490 | **/\r |
491 | VARIABLE_HEADER *\r | |
492 | GetNextVariablePtr (\r | |
493 | IN VARIABLE_HEADER *Variable\r | |
494 | )\r | |
8d3a5c82 | 495 | {\r |
130e2569 | 496 | UINTN Value;\r |
497 | \r | |
8d3a5c82 | 498 | if (!IsValidVariableHeader (Variable)) {\r |
499 | return NULL;\r | |
500 | }\r | |
130e2569 | 501 | \r |
502 | Value = (UINTN) GetVariableDataPtr (Variable);\r | |
503 | Value += DataSizeOfVariable (Variable);\r | |
504 | Value += GET_PAD_SIZE (DataSizeOfVariable (Variable));\r | |
505 | \r | |
8d3a5c82 | 506 | //\r |
507 | // Be careful about pad size for alignment\r | |
508 | //\r | |
130e2569 | 509 | return (VARIABLE_HEADER *) HEADER_ALIGN (Value);\r |
8d3a5c82 | 510 | }\r |
511 | \r | |
7c80e839 | 512 | /**\r |
9cad030b | 513 | \r |
7c80e839 | 514 | Gets the pointer to the first variable header in given variable store area.\r |
9cad030b | 515 | \r |
7c80e839 | 516 | @param VarStoreHeader Pointer to the Variable Store Header.\r |
9cad030b | 517 | \r |
7c80e839 | 518 | @return Pointer to the first variable header\r |
9cad030b | 519 | \r |
7c80e839 | 520 | **/\r |
521 | VARIABLE_HEADER *\r | |
522 | GetStartPointer (\r | |
523 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
524 | )\r | |
9cad030b | 525 | {\r |
526 | //\r | |
527 | // The end of variable store\r | |
528 | //\r | |
529 | return (VARIABLE_HEADER *) HEADER_ALIGN (VarStoreHeader + 1);\r | |
530 | }\r | |
052ad7e1 | 531 | \r |
7c80e839 | 532 | /**\r |
8d3a5c82 | 533 | \r |
7c80e839 | 534 | Gets the pointer to the end of the variable storage area.\r |
8d3a5c82 | 535 | \r |
7c80e839 | 536 | This function gets pointer to the end of the variable storage\r |
537 | area, according to the input variable store header.\r | |
8d3a5c82 | 538 | \r |
7c80e839 | 539 | @param VarStoreHeader Pointer to the Variable Store Header\r |
8d3a5c82 | 540 | \r |
7c80e839 | 541 | @return Pointer to the end of the variable storage area \r |
8d3a5c82 | 542 | \r |
7c80e839 | 543 | **/\r |
544 | VARIABLE_HEADER *\r | |
545 | GetEndPointer (\r | |
546 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
547 | )\r | |
8d3a5c82 | 548 | {\r |
549 | //\r | |
550 | // The end of variable store\r | |
551 | //\r | |
9cad030b | 552 | return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r |
8d3a5c82 | 553 | }\r |
554 | \r | |
052ad7e1 | 555 | \r |
7c80e839 | 556 | /**\r |
557 | \r | |
558 | Variable store garbage collection and reclaim operation.\r | |
559 | \r | |
560 | @param VariableBase Base address of variable store\r | |
561 | @param LastVariableOffset Offset of last variable\r | |
562 | @param IsVolatile The variable store is volatile or not,\r | |
563 | if it is non-volatile, need FTW\r | |
564 | @param UpdatingVariable Pointer to updateing variable.\r | |
565 | \r | |
566 | @return EFI_OUT_OF_RESOURCES\r | |
567 | @return EFI_SUCCESS\r | |
568 | @return Others\r | |
569 | \r | |
570 | **/\r | |
8d3a5c82 | 571 | EFI_STATUS\r |
8d3a5c82 | 572 | Reclaim (\r |
573 | IN EFI_PHYSICAL_ADDRESS VariableBase,\r | |
574 | OUT UINTN *LastVariableOffset,\r | |
814bae52 | 575 | IN BOOLEAN IsVolatile,\r |
576 | IN VARIABLE_HEADER *UpdatingVariable\r | |
8d3a5c82 | 577 | )\r |
8d3a5c82 | 578 | {\r |
579 | VARIABLE_HEADER *Variable;\r | |
814bae52 | 580 | VARIABLE_HEADER *AddedVariable;\r |
8d3a5c82 | 581 | VARIABLE_HEADER *NextVariable;\r |
814bae52 | 582 | VARIABLE_HEADER *NextAddedVariable;\r |
8d3a5c82 | 583 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r |
584 | UINT8 *ValidBuffer;\r | |
814bae52 | 585 | UINTN MaximumBufferSize;\r |
8d3a5c82 | 586 | UINTN VariableSize;\r |
49e70927 | 587 | UINTN VariableNameSize;\r |
588 | UINTN UpdatingVariableNameSize;\r | |
814bae52 | 589 | UINTN NameSize;\r |
8d3a5c82 | 590 | UINT8 *CurrPtr;\r |
814bae52 | 591 | VOID *Point0;\r |
592 | VOID *Point1;\r | |
593 | BOOLEAN FoundAdded;\r | |
8d3a5c82 | 594 | EFI_STATUS Status;\r |
49e70927 | 595 | CHAR16 *VariableNamePtr;\r |
596 | CHAR16 *UpdatingVariableNamePtr;\r | |
8d3a5c82 | 597 | \r |
598 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r | |
599 | \r | |
600 | //\r | |
601 | // Start Pointers for the variable.\r | |
602 | //\r | |
814bae52 | 603 | Variable = GetStartPointer (VariableStoreHeader);\r |
604 | MaximumBufferSize = sizeof (VARIABLE_STORE_HEADER);\r | |
8d3a5c82 | 605 | \r |
606 | while (IsValidVariableHeader (Variable)) {\r | |
607 | NextVariable = GetNextVariablePtr (Variable);\r | |
814bae52 | 608 | if (Variable->State == VAR_ADDED || \r |
609 | Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r | |
610 | ) {\r | |
8d3a5c82 | 611 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
814bae52 | 612 | MaximumBufferSize += VariableSize;\r |
8d3a5c82 | 613 | }\r |
614 | \r | |
615 | Variable = NextVariable;\r | |
616 | }\r | |
617 | \r | |
814bae52 | 618 | //\r |
619 | // Reserve the 1 Bytes with Oxff to identify the \r | |
620 | // end of the variable buffer. \r | |
621 | // \r | |
622 | MaximumBufferSize += 1;\r | |
623 | ValidBuffer = AllocatePool (MaximumBufferSize);\r | |
8d3a5c82 | 624 | if (ValidBuffer == NULL) {\r |
625 | return EFI_OUT_OF_RESOURCES;\r | |
626 | }\r | |
627 | \r | |
814bae52 | 628 | SetMem (ValidBuffer, MaximumBufferSize, 0xff);\r |
8d3a5c82 | 629 | \r |
630 | //\r | |
631 | // Copy variable store header\r | |
632 | //\r | |
814bae52 | 633 | CopyMem (ValidBuffer, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r |
634 | CurrPtr = (UINT8 *) GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
8d3a5c82 | 635 | \r |
814bae52 | 636 | //\r |
5ead4a07 | 637 | // Reinstall all ADDED variables as long as they are not identical to Updating Variable\r |
814bae52 | 638 | // \r |
639 | Variable = GetStartPointer (VariableStoreHeader);\r | |
8d3a5c82 | 640 | while (IsValidVariableHeader (Variable)) {\r |
641 | NextVariable = GetNextVariablePtr (Variable);\r | |
642 | if (Variable->State == VAR_ADDED) {\r | |
5ead4a07 | 643 | if (UpdatingVariable != NULL) {\r |
644 | if (UpdatingVariable == Variable) {\r | |
645 | Variable = NextVariable;\r | |
646 | continue;\r | |
647 | }\r | |
49e70927 | 648 | \r |
649 | VariableNameSize = NameSizeOfVariable(Variable);\r | |
650 | UpdatingVariableNameSize = NameSizeOfVariable(UpdatingVariable);\r | |
651 | \r | |
652 | VariableNamePtr = GetVariableNamePtr (Variable);\r | |
653 | UpdatingVariableNamePtr = GetVariableNamePtr (UpdatingVariable);\r | |
5ead4a07 | 654 | if (CompareGuid (&Variable->VendorGuid, &UpdatingVariable->VendorGuid) &&\r |
49e70927 | 655 | VariableNameSize == UpdatingVariableNameSize &&\r |
656 | CompareMem (VariableNamePtr, UpdatingVariableNamePtr, VariableNameSize) == 0 ) {\r | |
5ead4a07 | 657 | Variable = NextVariable;\r |
658 | continue;\r | |
659 | }\r | |
660 | }\r | |
8d3a5c82 | 661 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
662 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
663 | CurrPtr += VariableSize;\r | |
664 | }\r | |
8d3a5c82 | 665 | Variable = NextVariable;\r |
666 | }\r | |
5ead4a07 | 667 | \r |
668 | //\r | |
669 | // Reinstall the variable being updated if it is not NULL\r | |
670 | //\r | |
671 | if (UpdatingVariable != NULL) {\r | |
672 | VariableSize = (UINTN)(GetNextVariablePtr (UpdatingVariable)) - (UINTN)UpdatingVariable;\r | |
673 | CopyMem (CurrPtr, (UINT8 *) UpdatingVariable, VariableSize);\r | |
674 | CurrPtr += VariableSize;\r | |
675 | }\r | |
676 | \r | |
814bae52 | 677 | //\r |
678 | // Reinstall all in delete transition variables\r | |
679 | // \r | |
680 | Variable = GetStartPointer (VariableStoreHeader);\r | |
681 | while (IsValidVariableHeader (Variable)) {\r | |
682 | NextVariable = GetNextVariablePtr (Variable);\r | |
5ead4a07 | 683 | if (Variable != UpdatingVariable && Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r |
814bae52 | 684 | \r |
685 | //\r | |
686 | // Buffer has cached all ADDED variable. \r | |
687 | // Per IN_DELETED variable, we have to guarantee that\r | |
688 | // no ADDED one in previous buffer. \r | |
689 | // \r | |
690 | \r | |
691 | FoundAdded = FALSE;\r | |
692 | AddedVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
693 | while (IsValidVariableHeader (AddedVariable)) {\r | |
694 | NextAddedVariable = GetNextVariablePtr (AddedVariable);\r | |
695 | NameSize = NameSizeOfVariable (AddedVariable);\r | |
696 | if (CompareGuid (&AddedVariable->VendorGuid, &Variable->VendorGuid) &&\r | |
697 | NameSize == NameSizeOfVariable (Variable)\r | |
698 | ) {\r | |
699 | Point0 = (VOID *) GetVariableNamePtr (AddedVariable);\r | |
700 | Point1 = (VOID *) GetVariableNamePtr (Variable);\r | |
5ead4a07 | 701 | if (CompareMem (Point0, Point1, NameSizeOfVariable (AddedVariable)) == 0) {\r |
814bae52 | 702 | FoundAdded = TRUE;\r |
703 | break;\r | |
704 | }\r | |
705 | }\r | |
706 | AddedVariable = NextAddedVariable;\r | |
707 | }\r | |
708 | if (!FoundAdded) {\r | |
5ead4a07 | 709 | //\r |
710 | // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED\r | |
711 | //\r | |
814bae52 | 712 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
713 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
5ead4a07 | 714 | ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r |
814bae52 | 715 | CurrPtr += VariableSize;\r |
716 | }\r | |
717 | }\r | |
718 | \r | |
719 | Variable = NextVariable;\r | |
720 | }\r | |
8d3a5c82 | 721 | \r |
722 | if (IsVolatile) {\r | |
723 | //\r | |
724 | // If volatile variable store, just copy valid buffer\r | |
725 | //\r | |
726 | SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r | |
814bae52 | 727 | CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) (CurrPtr - (UINT8 *) ValidBuffer));\r |
8d3a5c82 | 728 | Status = EFI_SUCCESS;\r |
729 | } else {\r | |
730 | //\r | |
731 | // If non-volatile variable store, perform FTW here.\r | |
732 | //\r | |
733 | Status = FtwVariableSpace (\r | |
734 | VariableBase,\r | |
735 | ValidBuffer,\r | |
814bae52 | 736 | (UINTN) (CurrPtr - (UINT8 *) ValidBuffer)\r |
8d3a5c82 | 737 | );\r |
8d3a5c82 | 738 | }\r |
814bae52 | 739 | if (!EFI_ERROR (Status)) {\r |
740 | *LastVariableOffset = (UINTN) (CurrPtr - (UINT8 *) ValidBuffer);\r | |
741 | } else {\r | |
8d3a5c82 | 742 | *LastVariableOffset = 0;\r |
743 | }\r | |
744 | \r | |
814bae52 | 745 | FreePool (ValidBuffer);\r |
746 | \r | |
8d3a5c82 | 747 | return Status;\r |
748 | }\r | |
749 | \r | |
33a5a666 | 750 | \r |
052ad7e1 A |
751 | /**\r |
752 | Update the Cache with Variable information. These are the same \r | |
753 | arguments as the EFI Variable services.\r | |
754 | \r | |
755 | @param[in] VariableName Name of variable\r | |
756 | @param[in] VendorGuid Guid of variable\r | |
45f6c85b | 757 | @param[in] Attributes Attribues of the variable\r |
052ad7e1 A |
758 | @param[in] DataSize Size of data. 0 means delete\r |
759 | @param[in] Data Variable data\r | |
760 | \r | |
761 | **/\r | |
33a5a666 A |
762 | VOID\r |
763 | UpdateVariableCache (\r | |
764 | IN CHAR16 *VariableName,\r | |
765 | IN EFI_GUID *VendorGuid,\r | |
052ad7e1 A |
766 | IN UINT32 Attributes,\r |
767 | IN UINTN DataSize,\r | |
768 | IN VOID *Data\r | |
33a5a666 A |
769 | )\r |
770 | {\r | |
771 | VARIABLE_CACHE_ENTRY *Entry;\r | |
772 | UINTN Index;\r | |
773 | \r | |
774 | if (EfiAtRuntime ()) {\r | |
892b7f90 | 775 | //\r |
33a5a666 | 776 | // Don't use the cache at runtime\r |
892b7f90 | 777 | // \r |
33a5a666 A |
778 | return;\r |
779 | }\r | |
780 | \r | |
781 | for (Index = 0, Entry = mVariableCache; Index < sizeof (mVariableCache)/sizeof (VARIABLE_CACHE_ENTRY); Index++, Entry++) {\r | |
782 | if (CompareGuid (VendorGuid, Entry->Guid)) {\r | |
783 | if (StrCmp (VariableName, Entry->Name) == 0) { \r | |
784 | Entry->Attributes = Attributes;\r | |
785 | if (DataSize == 0) {\r | |
892b7f90 | 786 | //\r |
33a5a666 | 787 | // Delete Case\r |
892b7f90 | 788 | //\r |
33a5a666 A |
789 | if (Entry->DataSize != 0) {\r |
790 | FreePool (Entry->Data);\r | |
791 | }\r | |
792 | Entry->DataSize = DataSize;\r | |
793 | } else if (DataSize == Entry->DataSize) {\r | |
794 | CopyMem (Entry->Data, Data, DataSize);\r | |
795 | } else {\r | |
796 | Entry->Data = AllocatePool (DataSize);\r | |
892b7f90 | 797 | ASSERT (Entry->Data != NULL);\r |
798 | \r | |
33a5a666 A |
799 | Entry->DataSize = DataSize;\r |
800 | CopyMem (Entry->Data, Data, DataSize);\r | |
801 | }\r | |
802 | }\r | |
803 | }\r | |
804 | }\r | |
805 | }\r | |
806 | \r | |
807 | \r | |
052ad7e1 | 808 | /**\r |
7c80e839 | 809 | Search the cache to check if the variable is in it.\r |
052ad7e1 | 810 | \r |
7c80e839 | 811 | This function searches the variable cache. If the variable to find exists, return its data\r |
812 | and attributes.\r | |
052ad7e1 | 813 | \r |
7c80e839 | 814 | @param VariableName A Null-terminated Unicode string that is the name of the vendor's\r |
815 | variable. Each VariableName is unique for each \r | |
816 | VendorGuid.\r | |
817 | @param VendorGuid A unique identifier for the vendor\r | |
818 | @param Attributes Pointer to the attributes bitmask of the variable for output.\r | |
819 | @param DataSize On input, size of the buffer of Data.\r | |
820 | On output, size of the variable's data.\r | |
821 | @param Data Pointer to the data buffer for output.\r | |
822 | \r | |
823 | @retval EFI_SUCCESS VariableGuid & VariableName data was returned.\r | |
824 | @retval EFI_NOT_FOUND No matching variable found in cache.\r | |
825 | @retval EFI_BUFFER_TOO_SMALL *DataSize is smaller than size of the variable's data to return.\r | |
052ad7e1 A |
826 | \r |
827 | **/\r | |
33a5a666 A |
828 | EFI_STATUS\r |
829 | FindVariableInCache (\r | |
830 | IN CHAR16 *VariableName,\r | |
831 | IN EFI_GUID *VendorGuid,\r | |
832 | OUT UINT32 *Attributes OPTIONAL,\r | |
833 | IN OUT UINTN *DataSize,\r | |
834 | OUT VOID *Data\r | |
835 | )\r | |
836 | {\r | |
837 | VARIABLE_CACHE_ENTRY *Entry;\r | |
838 | UINTN Index;\r | |
839 | \r | |
840 | if (EfiAtRuntime ()) {\r | |
841 | // Don't use the cache at runtime\r | |
842 | return EFI_NOT_FOUND;\r | |
843 | }\r | |
844 | \r | |
845 | for (Index = 0, Entry = mVariableCache; Index < sizeof (mVariableCache)/sizeof (VARIABLE_CACHE_ENTRY); Index++, Entry++) {\r | |
846 | if (CompareGuid (VendorGuid, Entry->Guid)) {\r | |
847 | if (StrCmp (VariableName, Entry->Name) == 0) {\r | |
848 | if (Entry->DataSize == 0) {\r | |
052ad7e1 | 849 | // Variable was deleted so return not found\r |
33a5a666 | 850 | return EFI_NOT_FOUND;\r |
aa09397b | 851 | } else if (Entry->DataSize > *DataSize) {\r |
052ad7e1 | 852 | // If the buffer is too small return correct size\r |
33a5a666 A |
853 | *DataSize = Entry->DataSize;\r |
854 | return EFI_BUFFER_TOO_SMALL;\r | |
855 | } else {\r | |
aa09397b | 856 | *DataSize = Entry->DataSize;\r |
052ad7e1 | 857 | // Return the data\r |
33a5a666 A |
858 | CopyMem (Data, Entry->Data, Entry->DataSize);\r |
859 | if (Attributes != NULL) {\r | |
860 | *Attributes = Entry->Attributes;\r | |
861 | }\r | |
862 | return EFI_SUCCESS;\r | |
863 | }\r | |
864 | }\r | |
865 | }\r | |
866 | }\r | |
867 | \r | |
868 | return EFI_NOT_FOUND;\r | |
869 | }\r | |
870 | \r | |
7c80e839 | 871 | /**\r |
872 | Finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
873 | \r | |
874 | This code finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
875 | If VariableName is an empty string, then we just return the first\r | |
876 | qualified variable without comparing VariableName and VendorGuid.\r | |
877 | Otherwise, VariableName and VendorGuid are compared.\r | |
878 | \r | |
879 | @param VariableName Name of the variable to be found\r | |
880 | @param VendorGuid Vendor GUID to be found.\r | |
881 | @param PtrTrack VARIABLE_POINTER_TRACK structure for output,\r | |
882 | including the range searched and the target position.\r | |
883 | @param Global Pointer to VARIABLE_GLOBAL structure, including\r | |
884 | base of volatile variable storage area, base of\r | |
885 | NV variable storage area, and a lock.\r | |
886 | \r | |
887 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r | |
888 | VendorGuid is NULL\r | |
889 | @retval EFI_SUCCESS Variable successfully found\r | |
890 | @retval EFI_INVALID_PARAMETER Variable not found\r | |
33a5a666 | 891 | \r |
7c80e839 | 892 | **/\r |
8d3a5c82 | 893 | EFI_STATUS\r |
8d3a5c82 | 894 | FindVariable (\r |
895 | IN CHAR16 *VariableName,\r | |
896 | IN EFI_GUID *VendorGuid,\r | |
897 | OUT VARIABLE_POINTER_TRACK *PtrTrack,\r | |
898 | IN VARIABLE_GLOBAL *Global\r | |
899 | )\r | |
8d3a5c82 | 900 | {\r |
814bae52 | 901 | VARIABLE_HEADER *Variable[2];\r |
902 | VARIABLE_HEADER *InDeletedVariable;\r | |
903 | VARIABLE_STORE_HEADER *VariableStoreHeader[2];\r | |
904 | UINTN InDeletedStorageIndex;\r | |
905 | UINTN Index;\r | |
906 | VOID *Point;\r | |
8d3a5c82 | 907 | \r |
8d3a5c82 | 908 | //\r |
33a5a666 | 909 | // 0: Volatile, 1: Non-Volatile\r |
36873a61 | 910 | // The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName\r |
911 | // make use of this mapping to implement search algorithme.\r | |
8d3a5c82 | 912 | //\r |
052ad7e1 A |
913 | VariableStoreHeader[0] = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r |
914 | VariableStoreHeader[1] = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r | |
8d3a5c82 | 915 | \r |
916 | //\r | |
917 | // Start Pointers for the variable.\r | |
918 | // Actual Data Pointer where data can be written.\r | |
919 | //\r | |
9cad030b | 920 | Variable[0] = GetStartPointer (VariableStoreHeader[0]);\r |
921 | Variable[1] = GetStartPointer (VariableStoreHeader[1]);\r | |
8d3a5c82 | 922 | \r |
923 | if (VariableName[0] != 0 && VendorGuid == NULL) {\r | |
924 | return EFI_INVALID_PARAMETER;\r | |
925 | }\r | |
814bae52 | 926 | \r |
8d3a5c82 | 927 | //\r |
33a5a666 | 928 | // Find the variable by walk through volatile and then non-volatile variable store\r |
8d3a5c82 | 929 | //\r |
814bae52 | 930 | InDeletedVariable = NULL;\r |
931 | InDeletedStorageIndex = 0;\r | |
8d3a5c82 | 932 | for (Index = 0; Index < 2; Index++) {\r |
8d3a5c82 | 933 | while (IsValidVariableHeader (Variable[Index]) && (Variable[Index] <= GetEndPointer (VariableStoreHeader[Index]))) {\r |
814bae52 | 934 | if (Variable[Index]->State == VAR_ADDED || \r |
935 | Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r | |
936 | ) {\r | |
8ed62a30 | 937 | if (!EfiAtRuntime () || ((Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r |
8d3a5c82 | 938 | if (VariableName[0] == 0) {\r |
814bae52 | 939 | if (Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r |
940 | InDeletedVariable = Variable[Index];\r | |
941 | InDeletedStorageIndex = Index;\r | |
942 | } else {\r | |
943 | PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Index]);\r | |
944 | PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);\r | |
945 | PtrTrack->CurrPtr = Variable[Index];\r | |
946 | PtrTrack->Volatile = (BOOLEAN)(Index == 0);\r | |
947 | \r | |
948 | return EFI_SUCCESS;\r | |
949 | }\r | |
8d3a5c82 | 950 | } else {\r |
951 | if (CompareGuid (VendorGuid, &Variable[Index]->VendorGuid)) {\r | |
130e2569 | 952 | Point = (VOID *) GetVariableNamePtr (Variable[Index]);\r |
953 | \r | |
954 | ASSERT (NameSizeOfVariable (Variable[Index]) != 0);\r | |
c24b392c | 955 | if (CompareMem (VariableName, Point, NameSizeOfVariable (Variable[Index])) == 0) {\r |
814bae52 | 956 | if (Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r |
957 | InDeletedVariable = Variable[Index];\r | |
958 | InDeletedStorageIndex = Index;\r | |
959 | } else {\r | |
960 | PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Index]);\r | |
961 | PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);\r | |
962 | PtrTrack->CurrPtr = Variable[Index];\r | |
963 | PtrTrack->Volatile = (BOOLEAN)(Index == 0);\r | |
964 | \r | |
965 | return EFI_SUCCESS;\r | |
966 | }\r | |
8d3a5c82 | 967 | }\r |
968 | }\r | |
969 | }\r | |
970 | }\r | |
971 | }\r | |
972 | \r | |
973 | Variable[Index] = GetNextVariablePtr (Variable[Index]);\r | |
974 | }\r | |
814bae52 | 975 | if (InDeletedVariable != NULL) {\r |
976 | PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[InDeletedStorageIndex]);\r | |
977 | PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[InDeletedStorageIndex]);\r | |
978 | PtrTrack->CurrPtr = InDeletedVariable;\r | |
979 | PtrTrack->Volatile = (BOOLEAN)(InDeletedStorageIndex == 0);\r | |
980 | return EFI_SUCCESS;\r | |
981 | }\r | |
8d3a5c82 | 982 | }\r |
8d3a5c82 | 983 | PtrTrack->CurrPtr = NULL;\r |
984 | return EFI_NOT_FOUND;\r | |
985 | }\r | |
986 | \r | |
33a5a666 | 987 | \r |
7c80e839 | 988 | /**\r |
052ad7e1 | 989 | \r |
7c80e839 | 990 | This code finds variable in storage blocks (Volatile or Non-Volatile).\r |
c6492839 | 991 | \r |
7c80e839 | 992 | @param VariableName Name of Variable to be found.\r |
993 | @param VendorGuid Variable vendor GUID.\r | |
994 | @param Attributes Attribute value of the variable found.\r | |
995 | @param DataSize Size of Data found. If size is less than the\r | |
996 | data, this value contains the required size.\r | |
997 | @param Data Data pointer.\r | |
998 | \r | |
999 | @return EFI_INVALID_PARAMETER Invalid parameter\r | |
1000 | @return EFI_SUCCESS Find the specified variable\r | |
1001 | @return EFI_NOT_FOUND Not found\r | |
1002 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result\r | |
8d3a5c82 | 1003 | \r |
7c80e839 | 1004 | **/\r |
052ad7e1 A |
1005 | EFI_STATUS\r |
1006 | EFIAPI\r | |
1007 | RuntimeServiceGetVariable (\r | |
1008 | IN CHAR16 *VariableName,\r | |
1009 | IN EFI_GUID *VendorGuid,\r | |
1010 | OUT UINT32 *Attributes OPTIONAL,\r | |
1011 | IN OUT UINTN *DataSize,\r | |
1012 | OUT VOID *Data\r | |
1013 | )\r | |
8d3a5c82 | 1014 | {\r |
052ad7e1 | 1015 | EFI_STATUS Status;\r |
8d3a5c82 | 1016 | VARIABLE_POINTER_TRACK Variable;\r |
1017 | UINTN VarDataSize;\r | |
8d3a5c82 | 1018 | \r |
1019 | if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r | |
1020 | return EFI_INVALID_PARAMETER;\r | |
1021 | }\r | |
33a5a666 | 1022 | \r |
fdb7765f | 1023 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
1024 | \r | |
8d3a5c82 | 1025 | //\r |
1026 | // Find existing variable\r | |
1027 | //\r | |
33a5a666 A |
1028 | Status = FindVariableInCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r |
1029 | if ((Status == EFI_BUFFER_TOO_SMALL) || (Status == EFI_SUCCESS)){\r | |
1030 | // Hit in the Cache\r | |
1031 | UpdateVariableInfo (VariableName, VendorGuid, FALSE, TRUE, FALSE, FALSE, TRUE);\r | |
fdb7765f | 1032 | goto Done;\r |
33a5a666 A |
1033 | }\r |
1034 | \r | |
052ad7e1 | 1035 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);\r |
8d3a5c82 | 1036 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r |
1037 | goto Done;\r | |
1038 | }\r | |
33a5a666 | 1039 | \r |
8d3a5c82 | 1040 | //\r |
1041 | // Get data size\r | |
1042 | //\r | |
130e2569 | 1043 | VarDataSize = DataSizeOfVariable (Variable.CurrPtr);\r |
fdb7765f | 1044 | ASSERT (VarDataSize != 0);\r |
1045 | \r | |
8d3a5c82 | 1046 | if (*DataSize >= VarDataSize) {\r |
1047 | if (Data == NULL) {\r | |
1048 | Status = EFI_INVALID_PARAMETER;\r | |
1049 | goto Done;\r | |
1050 | }\r | |
1051 | \r | |
1052 | CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r | |
1053 | if (Attributes != NULL) {\r | |
1054 | *Attributes = Variable.CurrPtr->Attributes;\r | |
1055 | }\r | |
1056 | \r | |
1057 | *DataSize = VarDataSize;\r | |
33a5a666 A |
1058 | UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r |
1059 | UpdateVariableCache (VariableName, VendorGuid, Variable.CurrPtr->Attributes, VarDataSize, Data);\r | |
1060 | \r | |
8d3a5c82 | 1061 | Status = EFI_SUCCESS;\r |
1062 | goto Done;\r | |
1063 | } else {\r | |
1064 | *DataSize = VarDataSize;\r | |
1065 | Status = EFI_BUFFER_TOO_SMALL;\r | |
1066 | goto Done;\r | |
1067 | }\r | |
1068 | \r | |
1069 | Done:\r | |
052ad7e1 | 1070 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8d3a5c82 | 1071 | return Status;\r |
1072 | }\r | |
1073 | \r | |
052ad7e1 A |
1074 | \r |
1075 | \r | |
7c80e839 | 1076 | /**\r |
8d3a5c82 | 1077 | \r |
7c80e839 | 1078 | This code Finds the Next available variable.\r |
8d3a5c82 | 1079 | \r |
7c80e839 | 1080 | @param VariableNameSize Size of the variable name\r |
1081 | @param VariableName Pointer to variable name\r | |
1082 | @param VendorGuid Variable Vendor Guid\r | |
8d3a5c82 | 1083 | \r |
7c80e839 | 1084 | @return EFI_INVALID_PARAMETER Invalid parameter\r |
1085 | @return EFI_SUCCESS Find the specified variable\r | |
1086 | @return EFI_NOT_FOUND Not found\r | |
1087 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result\r | |
8d3a5c82 | 1088 | \r |
7c80e839 | 1089 | **/\r |
052ad7e1 A |
1090 | EFI_STATUS\r |
1091 | EFIAPI\r | |
1092 | RuntimeServiceGetNextVariableName (\r | |
1093 | IN OUT UINTN *VariableNameSize,\r | |
1094 | IN OUT CHAR16 *VariableName,\r | |
1095 | IN OUT EFI_GUID *VendorGuid\r | |
1096 | )\r | |
8d3a5c82 | 1097 | {\r |
1098 | VARIABLE_POINTER_TRACK Variable;\r | |
1099 | UINTN VarNameSize;\r | |
1100 | EFI_STATUS Status;\r | |
1101 | \r | |
1102 | if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r | |
1103 | return EFI_INVALID_PARAMETER;\r | |
1104 | }\r | |
1105 | \r | |
fdb7765f | 1106 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
1107 | \r | |
052ad7e1 | 1108 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);\r |
8d3a5c82 | 1109 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r |
1110 | goto Done;\r | |
1111 | }\r | |
1112 | \r | |
1113 | if (VariableName[0] != 0) {\r | |
1114 | //\r | |
1115 | // If variable name is not NULL, get next variable\r | |
1116 | //\r | |
1117 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
1118 | }\r | |
1119 | \r | |
1120 | while (TRUE) {\r | |
1121 | //\r | |
1122 | // If both volatile and non-volatile variable store are parsed,\r | |
1123 | // return not found\r | |
1124 | //\r | |
1125 | if (Variable.CurrPtr >= Variable.EndPtr || Variable.CurrPtr == NULL) {\r | |
1126 | Variable.Volatile = (BOOLEAN) (Variable.Volatile ^ ((BOOLEAN) 0x1));\r | |
36873a61 | 1127 | if (!Variable.Volatile) {\r |
9cad030b | 1128 | Variable.StartPtr = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r |
1129 | Variable.EndPtr = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase));\r | |
8d3a5c82 | 1130 | } else {\r |
1131 | Status = EFI_NOT_FOUND;\r | |
1132 | goto Done;\r | |
1133 | }\r | |
1134 | \r | |
1135 | Variable.CurrPtr = Variable.StartPtr;\r | |
1136 | if (!IsValidVariableHeader (Variable.CurrPtr)) {\r | |
1137 | continue;\r | |
1138 | }\r | |
1139 | }\r | |
1140 | //\r | |
1141 | // Variable is found\r | |
1142 | //\r | |
1143 | if (IsValidVariableHeader (Variable.CurrPtr) && Variable.CurrPtr->State == VAR_ADDED) {\r | |
c24b392c | 1144 | if ((EfiAtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) == 0) {\r |
130e2569 | 1145 | VarNameSize = NameSizeOfVariable (Variable.CurrPtr);\r |
fdb7765f | 1146 | ASSERT (VarNameSize != 0);\r |
1147 | \r | |
8d3a5c82 | 1148 | if (VarNameSize <= *VariableNameSize) {\r |
1149 | CopyMem (\r | |
1150 | VariableName,\r | |
130e2569 | 1151 | GetVariableNamePtr (Variable.CurrPtr),\r |
8d3a5c82 | 1152 | VarNameSize\r |
1153 | );\r | |
1154 | CopyMem (\r | |
1155 | VendorGuid,\r | |
1156 | &Variable.CurrPtr->VendorGuid,\r | |
1157 | sizeof (EFI_GUID)\r | |
1158 | );\r | |
1159 | Status = EFI_SUCCESS;\r | |
1160 | } else {\r | |
1161 | Status = EFI_BUFFER_TOO_SMALL;\r | |
1162 | }\r | |
1163 | \r | |
1164 | *VariableNameSize = VarNameSize;\r | |
1165 | goto Done;\r | |
1166 | }\r | |
1167 | }\r | |
1168 | \r | |
1169 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
1170 | }\r | |
1171 | \r | |
1172 | Done:\r | |
052ad7e1 | 1173 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8d3a5c82 | 1174 | return Status;\r |
1175 | }\r | |
1176 | \r | |
7c80e839 | 1177 | /**\r |
052ad7e1 | 1178 | \r |
7c80e839 | 1179 | This code sets variable in storage blocks (Volatile or Non-Volatile).\r |
8d3a5c82 | 1180 | \r |
7c80e839 | 1181 | @param VariableName Name of Variable to be found\r |
1182 | @param VendorGuid Variable vendor GUID\r | |
1183 | @param Attributes Attribute value of the variable found\r | |
1184 | @param DataSize Size of Data found. If size is less than the\r | |
1185 | data, this value contains the required size.\r | |
1186 | @param Data Data pointer\r | |
8d3a5c82 | 1187 | \r |
7c80e839 | 1188 | @return EFI_INVALID_PARAMETER Invalid parameter\r |
1189 | @return EFI_SUCCESS Set successfully\r | |
1190 | @return EFI_OUT_OF_RESOURCES Resource not enough to set variable\r | |
1191 | @return EFI_NOT_FOUND Not found\r | |
1192 | @return EFI_WRITE_PROTECTED Variable is read-only\r | |
8d3a5c82 | 1193 | \r |
7c80e839 | 1194 | **/\r |
052ad7e1 A |
1195 | EFI_STATUS\r |
1196 | EFIAPI\r | |
1197 | RuntimeServiceSetVariable (\r | |
1198 | IN CHAR16 *VariableName,\r | |
1199 | IN EFI_GUID *VendorGuid,\r | |
1200 | IN UINT32 Attributes,\r | |
1201 | IN UINTN DataSize,\r | |
1202 | IN VOID *Data\r | |
1203 | )\r | |
8d3a5c82 | 1204 | {\r |
8a9e0b72 | 1205 | VARIABLE_POINTER_TRACK Variable;\r |
1206 | EFI_STATUS Status;\r | |
1207 | VARIABLE_HEADER *NextVariable;\r | |
1208 | UINTN VarNameSize;\r | |
1209 | UINTN VarNameOffset;\r | |
1210 | UINTN VarDataOffset;\r | |
1211 | UINTN VarSize;\r | |
1212 | UINT8 State;\r | |
1213 | BOOLEAN Reclaimed;\r | |
1214 | UINTN *VolatileOffset;\r | |
1215 | UINTN *NonVolatileOffset;\r | |
1216 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
1217 | BOOLEAN Volatile;\r | |
1218 | EFI_PHYSICAL_ADDRESS Point;\r | |
8d3a5c82 | 1219 | \r |
c6492839 | 1220 | //\r |
1221 | // Check input parameters\r | |
1222 | //\r | |
8d3a5c82 | 1223 | if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r |
1224 | return EFI_INVALID_PARAMETER;\r | |
c6492839 | 1225 | } \r |
1226 | //\r | |
1227 | // Make sure if runtime bit is set, boot service bit is set also\r | |
1228 | //\r | |
1229 | if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r | |
1230 | return EFI_INVALID_PARAMETER;\r | |
8d3a5c82 | 1231 | }\r |
fdb7765f | 1232 | \r |
c6492839 | 1233 | //\r |
1234 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
e5618791 LG |
1235 | // the DataSize is limited to maximum size of FixedPcdGet32(PcdMaxHardwareErrorVariableSize)\r |
1236 | // bytes for HwErrRec, and FixedPcdGet32(PcdMaxVariableSize) bytes for the others.\r | |
c6492839 | 1237 | //\r |
1238 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
e5618791 LG |
1239 | if ((DataSize > FixedPcdGet32(PcdMaxHardwareErrorVariableSize)) || \r |
1240 | (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > FixedPcdGet32(PcdMaxHardwareErrorVariableSize))) {\r | |
c6492839 | 1241 | return EFI_INVALID_PARAMETER;\r |
1242 | } \r | |
1243 | } else {\r | |
1244 | //\r | |
1245 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
e5618791 | 1246 | // the DataSize is limited to maximum size of FixedPcdGet32(PcdMaxVariableSize) bytes.\r |
c6492839 | 1247 | //\r |
e5618791 LG |
1248 | if ((DataSize > FixedPcdGet32(PcdMaxVariableSize)) ||\r |
1249 | (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > FixedPcdGet32(PcdMaxVariableSize))) {\r | |
c6492839 | 1250 | return EFI_INVALID_PARAMETER;\r |
1251 | } \r | |
1252 | } \r | |
fdb7765f | 1253 | \r |
1254 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
1255 | \r | |
1256 | Reclaimed = FALSE;\r | |
8a9e0b72 | 1257 | Fvb = mVariableModuleGlobal->FvbInstance;\r |
fdb7765f | 1258 | VolatileOffset = &mVariableModuleGlobal->VolatileLastVariableOffset;\r |
1259 | \r | |
1260 | //\r | |
1261 | // Consider reentrant in MCA/INIT/NMI. It needs be reupdated;\r | |
1262 | //\r | |
1263 | if (1 < InterlockedIncrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState)) {\r | |
fdb7765f | 1264 | Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;;\r |
1265 | //\r | |
1266 | // Parse non-volatile variable data and get last variable offset\r | |
1267 | //\r | |
9cad030b | 1268 | NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point);\r |
fdb7765f | 1269 | while (IsValidVariableHeader (NextVariable)) {\r |
1270 | NextVariable = GetNextVariablePtr (NextVariable);\r | |
1271 | }\r | |
1272 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) Point;\r | |
1273 | }\r | |
1274 | \r | |
1275 | NonVolatileOffset = &mVariableModuleGlobal->NonVolatileLastVariableOffset;\r | |
1276 | \r | |
1277 | \r | |
c6492839 | 1278 | //\r |
1279 | // Check whether the input variable is already existed\r | |
1280 | //\r | |
1281 | \r | |
052ad7e1 | 1282 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);\r |
c6492839 | 1283 | if (Status == EFI_SUCCESS && Variable.CurrPtr != NULL) {\r |
8d3a5c82 | 1284 | //\r |
c6492839 | 1285 | // Update/Delete existing variable\r |
8d3a5c82 | 1286 | //\r |
fd51bf70 | 1287 | Volatile = Variable.Volatile;\r |
c6492839 | 1288 | \r |
1289 | if (EfiAtRuntime ()) { \r | |
1290 | //\r | |
1291 | // If EfiAtRuntime and the variable is Volatile and Runtime Access, \r | |
1292 | // the volatile is ReadOnly, and SetVariable should be aborted and \r | |
1293 | // return EFI_WRITE_PROTECTED.\r | |
1294 | //\r | |
1295 | if (Variable.Volatile) {\r | |
1296 | Status = EFI_WRITE_PROTECTED;\r | |
1297 | goto Done;\r | |
1298 | }\r | |
1299 | //\r | |
1300 | // Only variable have NV attribute can be updated/deleted in Runtime\r | |
1301 | //\r | |
c24b392c | 1302 | if ((Variable.CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r |
c6492839 | 1303 | Status = EFI_INVALID_PARAMETER;\r |
1304 | goto Done; \r | |
1305 | }\r | |
1306 | }\r | |
8d3a5c82 | 1307 | //\r |
c6492839 | 1308 | // Setting a data variable with no access, or zero DataSize attributes\r |
1309 | // specified causes it to be deleted.\r | |
8d3a5c82 | 1310 | //\r |
c6492839 | 1311 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) { \r |
1312 | State = Variable.CurrPtr->State;\r | |
1313 | State &= VAR_DELETED;\r | |
1314 | \r | |
1315 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1316 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1317 | Variable.Volatile,\r |
1318 | FALSE,\r | |
8a9e0b72 | 1319 | Fvb,\r |
c6492839 | 1320 | (UINTN) &Variable.CurrPtr->State,\r |
1321 | sizeof (UINT8),\r | |
1322 | &State\r | |
1323 | ); \r | |
33a5a666 | 1324 | if (!EFI_ERROR (Status)) {\r |
fd51bf70 | 1325 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, FALSE, TRUE, FALSE);\r |
33a5a666 A |
1326 | UpdateVariableCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r |
1327 | }\r | |
c6492839 | 1328 | goto Done; \r |
1329 | }\r | |
8d3a5c82 | 1330 | //\r |
c6492839 | 1331 | // If the variable is marked valid and the same data has been passed in\r |
1332 | // then return to the caller immediately.\r | |
8d3a5c82 | 1333 | //\r |
130e2569 | 1334 | if (DataSizeOfVariable (Variable.CurrPtr) == DataSize &&\r |
c6492839 | 1335 | (CompareMem (Data, GetVariableDataPtr (Variable.CurrPtr), DataSize) == 0)) {\r |
33a5a666 | 1336 | \r |
fd51bf70 | 1337 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r |
c6492839 | 1338 | Status = EFI_SUCCESS;\r |
1339 | goto Done;\r | |
1340 | } else if ((Variable.CurrPtr->State == VAR_ADDED) ||\r | |
1341 | (Variable.CurrPtr->State == (VAR_ADDED & VAR_IN_DELETED_TRANSITION))) {\r | |
814bae52 | 1342 | \r |
c6492839 | 1343 | //\r |
1344 | // Mark the old variable as in delete transition\r | |
1345 | //\r | |
1346 | State = Variable.CurrPtr->State;\r | |
1347 | State &= VAR_IN_DELETED_TRANSITION;\r | |
1348 | \r | |
1349 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1350 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1351 | Variable.Volatile,\r |
1352 | FALSE,\r | |
8a9e0b72 | 1353 | Fvb,\r |
c6492839 | 1354 | (UINTN) &Variable.CurrPtr->State,\r |
1355 | sizeof (UINT8),\r | |
1356 | &State\r | |
1357 | ); \r | |
1358 | if (EFI_ERROR (Status)) {\r | |
1359 | goto Done; \r | |
33a5a666 | 1360 | } \r |
c6492839 | 1361 | } \r |
1362 | } else if (Status == EFI_NOT_FOUND) {\r | |
8d3a5c82 | 1363 | //\r |
c6492839 | 1364 | // Create a new variable\r |
1365 | // \r | |
1366 | \r | |
8d3a5c82 | 1367 | //\r |
c6492839 | 1368 | // Make sure we are trying to create a new variable.\r |
1369 | // Setting a data variable with no access, or zero DataSize attributes means to delete it. \r | |
8d3a5c82 | 1370 | //\r |
c6492839 | 1371 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r |
1372 | Status = EFI_NOT_FOUND;\r | |
1373 | goto Done;\r | |
1374 | }\r | |
1375 | \r | |
8d3a5c82 | 1376 | //\r |
c6492839 | 1377 | // Only variable have NV|RT attribute can be created in Runtime\r |
1378 | //\r | |
1379 | if (EfiAtRuntime () &&\r | |
45f6c85b | 1380 | (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r |
c6492839 | 1381 | Status = EFI_INVALID_PARAMETER;\r |
1382 | goto Done;\r | |
1383 | } \r | |
1384 | } else {\r | |
8d3a5c82 | 1385 | //\r |
c6492839 | 1386 | // Status should be EFI_INVALID_PARAMETER here according to return status of FindVariable().\r |
8d3a5c82 | 1387 | //\r |
c6492839 | 1388 | ASSERT (Status == EFI_INVALID_PARAMETER);\r |
8d3a5c82 | 1389 | goto Done;\r |
c6492839 | 1390 | }\r |
1391 | \r | |
1392 | //\r | |
1393 | // Function part - create a new variable and copy the data.\r | |
1394 | // Both update a variable and create a variable will come here.\r | |
1395 | //\r | |
1396 | // Tricky part: Use scratch data area at the end of volatile variable store\r | |
1397 | // as a temporary storage.\r | |
1398 | //\r | |
052ad7e1 | 1399 | NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));\r |
c6492839 | 1400 | \r |
e5618791 | 1401 | SetMem (NextVariable, FixedPcdGet32(PcdMaxVariableSize), 0xff);\r |
c6492839 | 1402 | \r |
1403 | NextVariable->StartId = VARIABLE_DATA;\r | |
1404 | NextVariable->Attributes = Attributes;\r | |
1405 | //\r | |
1406 | // NextVariable->State = VAR_ADDED;\r | |
1407 | //\r | |
1408 | NextVariable->Reserved = 0;\r | |
1409 | VarNameOffset = sizeof (VARIABLE_HEADER);\r | |
1410 | VarNameSize = StrSize (VariableName);\r | |
1411 | CopyMem (\r | |
1412 | (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r | |
1413 | VariableName,\r | |
1414 | VarNameSize\r | |
1415 | );\r | |
1416 | VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r | |
1417 | CopyMem (\r | |
1418 | (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r | |
1419 | Data,\r | |
1420 | DataSize\r | |
1421 | );\r | |
1422 | CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));\r | |
1423 | //\r | |
1424 | // There will be pad bytes after Data, the NextVariable->NameSize and\r | |
1425 | // NextVariable->DataSize should not include pad size so that variable\r | |
1426 | // service can get actual size in GetVariable\r | |
1427 | //\r | |
1428 | NextVariable->NameSize = (UINT32)VarNameSize;\r | |
1429 | NextVariable->DataSize = (UINT32)DataSize;\r | |
1430 | \r | |
1431 | //\r | |
1432 | // The actual size of the variable that stores in storage should\r | |
1433 | // include pad size.\r | |
1434 | //\r | |
1435 | VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r | |
45f6c85b | 1436 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
8d3a5c82 | 1437 | //\r |
c6492839 | 1438 | // Create a nonvolatile variable\r |
8d3a5c82 | 1439 | //\r |
fd51bf70 | 1440 | Volatile = FALSE;\r |
c6492839 | 1441 | \r |
1442 | if ((UINT32) (VarSize +*NonVolatileOffset) >\r | |
052ad7e1 | 1443 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase)))->Size\r |
c6492839 | 1444 | ) {\r |
1445 | if (EfiAtRuntime ()) {\r | |
1446 | Status = EFI_OUT_OF_RESOURCES;\r | |
1447 | goto Done;\r | |
1448 | }\r | |
1449 | //\r | |
1450 | // Perform garbage collection & reclaim operation\r | |
1451 | //\r | |
814bae52 | 1452 | Status = Reclaim (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase, NonVolatileOffset, FALSE, Variable.CurrPtr);\r |
8d3a5c82 | 1453 | if (EFI_ERROR (Status)) {\r |
1454 | goto Done;\r | |
1455 | }\r | |
8d3a5c82 | 1456 | //\r |
c6492839 | 1457 | // If still no enough space, return out of resources\r |
8d3a5c82 | 1458 | //\r |
c6492839 | 1459 | if ((UINT32) (VarSize +*NonVolatileOffset) >\r |
052ad7e1 | 1460 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase)))->Size\r |
8d3a5c82 | 1461 | ) {\r |
c6492839 | 1462 | Status = EFI_OUT_OF_RESOURCES;\r |
8d3a5c82 | 1463 | goto Done;\r |
8d3a5c82 | 1464 | }\r |
c6492839 | 1465 | \r |
1466 | Reclaimed = TRUE;\r | |
8d3a5c82 | 1467 | }\r |
1468 | //\r | |
c6492839 | 1469 | // Three steps\r |
1470 | // 1. Write variable header\r | |
130e2569 | 1471 | // 2. Set variable state to header valid \r |
1472 | // 3. Write variable data\r | |
1473 | // 4. Set variable state to valid\r | |
8d3a5c82 | 1474 | //\r |
8d3a5c82 | 1475 | //\r |
c6492839 | 1476 | // Step 1:\r |
8d3a5c82 | 1477 | //\r |
c6492839 | 1478 | Status = UpdateVariableStore (\r |
052ad7e1 | 1479 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1480 | FALSE,\r |
1481 | TRUE,\r | |
8a9e0b72 | 1482 | Fvb,\r |
c6492839 | 1483 | *NonVolatileOffset,\r |
1484 | sizeof (VARIABLE_HEADER),\r | |
1485 | (UINT8 *) NextVariable\r | |
1486 | );\r | |
1487 | \r | |
1488 | if (EFI_ERROR (Status)) {\r | |
1489 | goto Done;\r | |
1490 | }\r | |
130e2569 | 1491 | \r |
8d3a5c82 | 1492 | //\r |
c6492839 | 1493 | // Step 2:\r |
8d3a5c82 | 1494 | //\r |
130e2569 | 1495 | NextVariable->State = VAR_HEADER_VALID_ONLY;\r |
1496 | Status = UpdateVariableStore (\r | |
1497 | &mVariableModuleGlobal->VariableGlobal,\r | |
1498 | FALSE,\r | |
1499 | TRUE,\r | |
8a9e0b72 | 1500 | Fvb,\r |
130e2569 | 1501 | *NonVolatileOffset,\r |
1502 | sizeof (VARIABLE_HEADER),\r | |
1503 | (UINT8 *) NextVariable\r | |
1504 | );\r | |
1505 | \r | |
1506 | if (EFI_ERROR (Status)) {\r | |
1507 | goto Done;\r | |
1508 | }\r | |
1509 | //\r | |
1510 | // Step 3:\r | |
1511 | //\r | |
c6492839 | 1512 | Status = UpdateVariableStore (\r |
052ad7e1 | 1513 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1514 | FALSE,\r |
1515 | TRUE,\r | |
8a9e0b72 | 1516 | Fvb,\r |
c6492839 | 1517 | *NonVolatileOffset + sizeof (VARIABLE_HEADER),\r |
1518 | (UINT32) VarSize - sizeof (VARIABLE_HEADER),\r | |
1519 | (UINT8 *) NextVariable + sizeof (VARIABLE_HEADER)\r | |
1520 | );\r | |
1521 | \r | |
1522 | if (EFI_ERROR (Status)) {\r | |
1523 | goto Done;\r | |
1524 | }\r | |
8d3a5c82 | 1525 | //\r |
130e2569 | 1526 | // Step 4:\r |
8d3a5c82 | 1527 | //\r |
c6492839 | 1528 | NextVariable->State = VAR_ADDED;\r |
1529 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1530 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1531 | FALSE,\r |
1532 | TRUE,\r | |
8a9e0b72 | 1533 | Fvb,\r |
c6492839 | 1534 | *NonVolatileOffset,\r |
1535 | sizeof (VARIABLE_HEADER),\r | |
1536 | (UINT8 *) NextVariable\r | |
1537 | );\r | |
1538 | \r | |
1539 | if (EFI_ERROR (Status)) {\r | |
1540 | goto Done;\r | |
1541 | }\r | |
8d3a5c82 | 1542 | \r |
9cad030b | 1543 | *NonVolatileOffset = HEADER_ALIGN (*NonVolatileOffset + VarSize);\r |
8d3a5c82 | 1544 | \r |
c6492839 | 1545 | } else {\r |
1546 | //\r | |
1547 | // Create a volatile variable\r | |
1548 | // \r | |
fd51bf70 | 1549 | Volatile = TRUE;\r |
c6492839 | 1550 | \r |
1551 | if ((UINT32) (VarSize +*VolatileOffset) >\r | |
052ad7e1 | 1552 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size) {\r |
8d3a5c82 | 1553 | //\r |
c6492839 | 1554 | // Perform garbage collection & reclaim operation\r |
8d3a5c82 | 1555 | //\r |
814bae52 | 1556 | Status = Reclaim (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase, VolatileOffset, TRUE, Variable.CurrPtr);\r |
8d3a5c82 | 1557 | if (EFI_ERROR (Status)) {\r |
1558 | goto Done;\r | |
1559 | }\r | |
1560 | //\r | |
c6492839 | 1561 | // If still no enough space, return out of resources\r |
8d3a5c82 | 1562 | //\r |
8d3a5c82 | 1563 | if ((UINT32) (VarSize +*VolatileOffset) >\r |
052ad7e1 | 1564 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size\r |
8d3a5c82 | 1565 | ) {\r |
c6492839 | 1566 | Status = EFI_OUT_OF_RESOURCES;\r |
8d3a5c82 | 1567 | goto Done;\r |
1568 | }\r | |
c6492839 | 1569 | \r |
1570 | Reclaimed = TRUE;\r | |
8d3a5c82 | 1571 | }\r |
8d3a5c82 | 1572 | \r |
c6492839 | 1573 | NextVariable->State = VAR_ADDED;\r |
1574 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1575 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1576 | TRUE,\r |
1577 | TRUE,\r | |
8a9e0b72 | 1578 | Fvb,\r |
c6492839 | 1579 | *VolatileOffset,\r |
1580 | (UINT32) VarSize,\r | |
1581 | (UINT8 *) NextVariable\r | |
1582 | );\r | |
1583 | \r | |
1584 | if (EFI_ERROR (Status)) {\r | |
1585 | goto Done;\r | |
8d3a5c82 | 1586 | }\r |
c6492839 | 1587 | \r |
9cad030b | 1588 | *VolatileOffset = HEADER_ALIGN (*VolatileOffset + VarSize);\r |
c6492839 | 1589 | }\r |
1590 | //\r | |
1591 | // Mark the old variable as deleted\r | |
1592 | //\r | |
1593 | if (!Reclaimed && !EFI_ERROR (Status) && Variable.CurrPtr != NULL) {\r | |
1594 | State = Variable.CurrPtr->State;\r | |
1595 | State &= VAR_DELETED;\r | |
1596 | \r | |
1597 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1598 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1599 | Variable.Volatile,\r |
1600 | FALSE,\r | |
8a9e0b72 | 1601 | Fvb,\r |
c6492839 | 1602 | (UINTN) &Variable.CurrPtr->State,\r |
1603 | sizeof (UINT8),\r | |
1604 | &State\r | |
1605 | );\r | |
33a5a666 A |
1606 | \r |
1607 | if (!EFI_ERROR (Status)) {\r | |
fd51bf70 | 1608 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r |
33a5a666 A |
1609 | UpdateVariableCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r |
1610 | }\r | |
c6492839 | 1611 | goto Done; \r |
8d3a5c82 | 1612 | }\r |
1613 | \r | |
1614 | Status = EFI_SUCCESS;\r | |
fd51bf70 | 1615 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r |
33a5a666 A |
1616 | UpdateVariableCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r |
1617 | \r | |
8d3a5c82 | 1618 | Done:\r |
fdb7765f | 1619 | InterlockedDecrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState);\r |
052ad7e1 | 1620 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
fdb7765f | 1621 | \r |
8d3a5c82 | 1622 | return Status;\r |
1623 | }\r | |
1624 | \r | |
7c80e839 | 1625 | /**\r |
8d3a5c82 | 1626 | \r |
1627 | This code returns information about the EFI variables.\r | |
1628 | \r | |
7c80e839 | 1629 | @param Attributes Attributes bitmask to specify the type of variables\r |
1630 | on which to return information.\r | |
1631 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
1632 | for the EFI variables associated with the attributes specified.\r | |
1633 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
1634 | for EFI variables associated with the attributes specified.\r | |
1635 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
1636 | associated with the attributes specified.\r | |
8d3a5c82 | 1637 | \r |
7c80e839 | 1638 | @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r |
1639 | @return EFI_SUCCESS Query successfully.\r | |
1640 | @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r | |
8d3a5c82 | 1641 | \r |
7c80e839 | 1642 | **/\r |
052ad7e1 A |
1643 | EFI_STATUS\r |
1644 | EFIAPI\r | |
1645 | RuntimeServiceQueryVariableInfo (\r | |
1646 | IN UINT32 Attributes,\r | |
1647 | OUT UINT64 *MaximumVariableStorageSize,\r | |
1648 | OUT UINT64 *RemainingVariableStorageSize,\r | |
1649 | OUT UINT64 *MaximumVariableSize\r | |
1650 | )\r | |
8d3a5c82 | 1651 | {\r |
1652 | VARIABLE_HEADER *Variable;\r | |
1653 | VARIABLE_HEADER *NextVariable;\r | |
1654 | UINT64 VariableSize;\r | |
1655 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
1656 | \r | |
c6492839 | 1657 | if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r |
8d3a5c82 | 1658 | return EFI_INVALID_PARAMETER;\r |
1659 | }\r | |
c6492839 | 1660 | \r |
1661 | if((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == 0) {\r | |
8d3a5c82 | 1662 | //\r |
1663 | // Make sure the Attributes combination is supported by the platform.\r | |
1664 | //\r | |
c6492839 | 1665 | return EFI_UNSUPPORTED; \r |
8d3a5c82 | 1666 | } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r |
1667 | //\r | |
1668 | // Make sure if runtime bit is set, boot service bit is set also.\r | |
1669 | //\r | |
1670 | return EFI_INVALID_PARAMETER;\r | |
45f6c85b | 1671 | } else if (EfiAtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r |
8d3a5c82 | 1672 | //\r |
1673 | // Make sure RT Attribute is set if we are in Runtime phase.\r | |
1674 | //\r | |
1675 | return EFI_INVALID_PARAMETER;\r | |
1676 | }\r | |
1677 | \r | |
052ad7e1 | 1678 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8d3a5c82 | 1679 | \r |
1680 | if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r | |
1681 | //\r | |
1682 | // Query is Volatile related.\r | |
1683 | //\r | |
052ad7e1 | 1684 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r |
8d3a5c82 | 1685 | } else {\r |
1686 | //\r | |
1687 | // Query is Non-Volatile related.\r | |
1688 | //\r | |
052ad7e1 | 1689 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r |
8d3a5c82 | 1690 | }\r |
1691 | \r | |
1692 | //\r | |
1693 | // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize\r | |
1694 | // with the storage size (excluding the storage header size).\r | |
1695 | //\r | |
1696 | *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r | |
1697 | *RemainingVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r | |
1698 | \r | |
1699 | //\r | |
e5618791 | 1700 | // Let *MaximumVariableSize be FixedPcdGet32(PcdMaxVariableSize) with the exception of the variable header size.\r |
8d3a5c82 | 1701 | //\r |
e5618791 | 1702 | *MaximumVariableSize = FixedPcdGet32(PcdMaxVariableSize) - sizeof (VARIABLE_HEADER);\r |
c6492839 | 1703 | \r |
1704 | //\r | |
1705 | // Harware error record variable needs larger size.\r | |
1706 | //\r | |
1707 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
e5618791 | 1708 | *MaximumVariableSize = FixedPcdGet32(PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r |
c6492839 | 1709 | }\r |
8d3a5c82 | 1710 | \r |
1711 | //\r | |
1712 | // Point to the starting address of the variables.\r | |
1713 | //\r | |
9cad030b | 1714 | Variable = GetStartPointer (VariableStoreHeader);\r |
8d3a5c82 | 1715 | \r |
1716 | //\r | |
1717 | // Now walk through the related variable store.\r | |
1718 | //\r | |
1719 | while (IsValidVariableHeader (Variable) && (Variable < GetEndPointer (VariableStoreHeader))) {\r | |
1720 | NextVariable = GetNextVariablePtr (Variable);\r | |
1721 | VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r | |
1722 | \r | |
1723 | if (EfiAtRuntime ()) {\r | |
1724 | //\r | |
1725 | // we don't take the state of the variables in mind\r | |
1726 | // when calculating RemainingVariableStorageSize,\r | |
1727 | // since the space occupied by variables not marked with\r | |
1728 | // VAR_ADDED is not allowed to be reclaimed in Runtime.\r | |
1729 | //\r | |
1730 | *RemainingVariableStorageSize -= VariableSize;\r | |
1731 | } else {\r | |
1732 | //\r | |
1733 | // Only care about Variables with State VAR_ADDED,because\r | |
1734 | // the space not marked as VAR_ADDED is reclaimable now.\r | |
1735 | //\r | |
1736 | if (Variable->State == VAR_ADDED) {\r | |
1737 | *RemainingVariableStorageSize -= VariableSize;\r | |
1738 | }\r | |
1739 | }\r | |
1740 | \r | |
1741 | //\r | |
1742 | // Go to the next one\r | |
1743 | //\r | |
1744 | Variable = NextVariable;\r | |
1745 | }\r | |
1746 | \r | |
c6492839 | 1747 | if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {\r |
1748 | *MaximumVariableSize = 0;\r | |
1749 | } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) < *MaximumVariableSize) {\r | |
1750 | *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (VARIABLE_HEADER);\r | |
1751 | }\r | |
1752 | \r | |
052ad7e1 | 1753 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8d3a5c82 | 1754 | return EFI_SUCCESS;\r |
1755 | }\r | |
1756 | \r | |
7c80e839 | 1757 | \r |
1758 | /**\r | |
1759 | Notification function of EVT_GROUP_READY_TO_BOOT event group.\r | |
1760 | \r | |
1761 | This is a notification function registered on EVT_GROUP_READY_TO_BOOT event group.\r | |
1762 | When the Boot Manager is about to load and execute a boot option, it reclaims variable\r | |
1763 | storage if free size is below the threshold.\r | |
1764 | \r | |
1765 | @param Event Event whose notification function is being invoked\r | |
1766 | @param Context Pointer to the notification function's context\r | |
1767 | \r | |
1768 | **/\r | |
7800593d LG |
1769 | VOID\r |
1770 | EFIAPI\r | |
1771 | ReclaimForOS(\r | |
1772 | EFI_EVENT Event,\r | |
1773 | VOID *Context\r | |
1774 | )\r | |
1775 | {\r | |
1776 | UINT32 VarSize;\r | |
1777 | EFI_STATUS Status;\r | |
1778 | \r | |
1779 | VarSize = ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase))->Size;\r | |
1780 | Status = EFI_SUCCESS; \r | |
1781 | \r | |
1782 | //\r | |
1783 | // Check if the free area is blow a threshold\r | |
1784 | //\r | |
1785 | if ((VarSize - mVariableModuleGlobal->NonVolatileLastVariableOffset) < VARIABLE_RECLAIM_THRESHOLD) {\r | |
1786 | Status = Reclaim (\r | |
1787 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
1788 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
814bae52 | 1789 | FALSE,\r |
1790 | NULL\r | |
7800593d LG |
1791 | );\r |
1792 | ASSERT_EFI_ERROR (Status);\r | |
1793 | }\r | |
1794 | }\r | |
1795 | \r | |
7c80e839 | 1796 | /**\r |
1797 | Initializes variable store area for non-volatile and volatile variable.\r | |
1798 | \r | |
7c80e839 | 1799 | @param SystemTable The pointer of EFI_SYSTEM_TABLE.\r |
1800 | \r | |
1801 | @retval EFI_SUCCESS Function successfully executed.\r | |
1802 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
1803 | \r | |
1804 | **/\r | |
8d3a5c82 | 1805 | EFI_STATUS\r |
8d3a5c82 | 1806 | VariableCommonInitialize (\r |
8a9e0b72 | 1807 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvbProtocol\r |
8d3a5c82 | 1808 | )\r |
8d3a5c82 | 1809 | {\r |
1810 | EFI_STATUS Status;\r | |
8d3a5c82 | 1811 | VARIABLE_STORE_HEADER *VolatileVariableStore;\r |
1812 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
1813 | VARIABLE_HEADER *NextVariable;\r | |
8a9e0b72 | 1814 | EFI_PHYSICAL_ADDRESS TempVariableStoreHeader;\r |
8d3a5c82 | 1815 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;\r |
8a9e0b72 | 1816 | EFI_PHYSICAL_ADDRESS BaseAddress;\r |
8d3a5c82 | 1817 | UINT64 Length;\r |
1818 | UINTN Index;\r | |
1819 | UINT8 Data;\r | |
8a9e0b72 | 1820 | EFI_PHYSICAL_ADDRESS VariableStoreBase;\r |
052ad7e1 | 1821 | UINT64 VariableStoreLength;\r |
7800593d | 1822 | EFI_EVENT ReadyToBootEvent;\r |
8d3a5c82 | 1823 | \r |
7800593d LG |
1824 | Status = EFI_SUCCESS;\r |
1825 | //\r | |
1826 | // Allocate runtime memory for variable driver global structure.\r | |
1827 | //\r | |
1828 | mVariableModuleGlobal = AllocateRuntimePool (sizeof (VARIABLE_MODULE_GLOBAL));\r | |
1829 | if (mVariableModuleGlobal == NULL) {\r | |
1830 | return EFI_OUT_OF_RESOURCES;\r | |
1831 | }\r | |
8d3a5c82 | 1832 | \r |
052ad7e1 | 1833 | EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r |
fdb7765f | 1834 | mVariableModuleGlobal->VariableGlobal.ReentrantState = 0;\r |
8d3a5c82 | 1835 | \r |
1836 | //\r | |
1837 | // Allocate memory for volatile variable store\r | |
1838 | //\r | |
e5618791 | 1839 | VolatileVariableStore = AllocateRuntimePool (FixedPcdGet32(PcdVariableStoreSize) + FixedPcdGet32(PcdMaxVariableSize));\r |
8d3a5c82 | 1840 | if (VolatileVariableStore == NULL) {\r |
1841 | FreePool (mVariableModuleGlobal);\r | |
1842 | return EFI_OUT_OF_RESOURCES;\r | |
1843 | }\r | |
1844 | \r | |
e5618791 | 1845 | SetMem (VolatileVariableStore, FixedPcdGet32(PcdVariableStoreSize) + FixedPcdGet32(PcdMaxVariableSize), 0xff);\r |
8d3a5c82 | 1846 | \r |
1847 | //\r | |
1848 | // Variable Specific Data\r | |
1849 | //\r | |
052ad7e1 | 1850 | mVariableModuleGlobal->VariableGlobal.VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r |
9cad030b | 1851 | mVariableModuleGlobal->VolatileLastVariableOffset = (UINTN) GetStartPointer (VolatileVariableStore) - (UINTN) VolatileVariableStore;\r |
8a9e0b72 | 1852 | mVariableModuleGlobal->FvbInstance = FvbProtocol;\r |
8d3a5c82 | 1853 | \r |
3709c4cd | 1854 | CopyGuid (&VolatileVariableStore->Signature, &gEfiVariableGuid);\r |
e5618791 | 1855 | VolatileVariableStore->Size = FixedPcdGet32(PcdVariableStoreSize);\r |
8d3a5c82 | 1856 | VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r |
1857 | VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r | |
1858 | VolatileVariableStore->Reserved = 0;\r | |
1859 | VolatileVariableStore->Reserved1 = 0;\r | |
1860 | \r | |
1861 | //\r | |
1862 | // Get non volatile varaible store\r | |
1863 | //\r | |
1864 | \r | |
8a9e0b72 | 1865 | TempVariableStoreHeader = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r |
052ad7e1 | 1866 | VariableStoreBase = TempVariableStoreHeader + \\r |
8a9e0b72 | 1867 | (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r |
052ad7e1 | 1868 | VariableStoreLength = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize) - \\r |
8a9e0b72 | 1869 | (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r |
8d3a5c82 | 1870 | //\r |
1871 | // Mark the variable storage region of the FLASH as RUNTIME\r | |
1872 | //\r | |
052ad7e1 A |
1873 | BaseAddress = VariableStoreBase & (~EFI_PAGE_MASK);\r |
1874 | Length = VariableStoreLength + (VariableStoreBase - BaseAddress);\r | |
8d3a5c82 | 1875 | Length = (Length + EFI_PAGE_SIZE - 1) & (~EFI_PAGE_MASK);\r |
1876 | \r | |
1877 | Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdDescriptor);\r | |
1878 | if (EFI_ERROR (Status)) {\r | |
7800593d | 1879 | goto Done;\r |
8d3a5c82 | 1880 | }\r |
1881 | \r | |
1882 | Status = gDS->SetMemorySpaceAttributes (\r | |
1883 | BaseAddress,\r | |
1884 | Length,\r | |
1885 | GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME\r | |
1886 | );\r | |
1887 | if (EFI_ERROR (Status)) {\r | |
7800593d | 1888 | goto Done;\r |
8d3a5c82 | 1889 | }\r |
1890 | //\r | |
1891 | // Get address of non volatile variable store base\r | |
1892 | //\r | |
052ad7e1 | 1893 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r |
8a9e0b72 | 1894 | VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r |
8d3a5c82 | 1895 | if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r |
1896 | if (~VariableStoreHeader->Size == 0) {\r | |
1897 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1898 | &mVariableModuleGlobal->VariableGlobal,\r |
8d3a5c82 | 1899 | FALSE,\r |
1900 | FALSE,\r | |
1901 | mVariableModuleGlobal->FvbInstance,\r | |
1902 | (UINTN) &VariableStoreHeader->Size,\r | |
1903 | sizeof (UINT32),\r | |
052ad7e1 | 1904 | (UINT8 *) &VariableStoreLength\r |
8d3a5c82 | 1905 | );\r |
1906 | //\r | |
1907 | // As Variables are stored in NV storage, which are slow devices,such as flash.\r | |
1908 | // Variable operation may skip checking variable program result to improve performance,\r | |
1909 | // We can assume Variable program is OK through some check point.\r | |
1910 | // Variable Store Size Setting should be the first Variable write operation,\r | |
1911 | // We can assume all Read/Write is OK if we can set Variable store size successfully.\r | |
1912 | // If write fail, we will assert here\r | |
1913 | //\r | |
052ad7e1 | 1914 | ASSERT(VariableStoreHeader->Size == VariableStoreLength);\r |
8d3a5c82 | 1915 | \r |
1916 | if (EFI_ERROR (Status)) {\r | |
7800593d | 1917 | goto Done;\r |
8d3a5c82 | 1918 | }\r |
1919 | }\r | |
1920 | \r | |
8d3a5c82 | 1921 | //\r |
1922 | // Parse non-volatile variable data and get last variable offset\r | |
1923 | //\r | |
8a9e0b72 | 1924 | NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase);\r |
8d3a5c82 | 1925 | Status = EFI_SUCCESS;\r |
1926 | \r | |
1927 | while (IsValidVariableHeader (NextVariable)) {\r | |
1928 | NextVariable = GetNextVariablePtr (NextVariable);\r | |
1929 | }\r | |
1930 | \r | |
8a9e0b72 | 1931 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) VariableStoreBase;\r |
8d3a5c82 | 1932 | \r |
8d3a5c82 | 1933 | //\r |
1934 | // Check if the free area is really free.\r | |
1935 | //\r | |
1936 | for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {\r | |
052ad7e1 | 1937 | Data = ((UINT8 *) (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase)[Index];\r |
8d3a5c82 | 1938 | if (Data != 0xff) {\r |
1939 | //\r | |
1940 | // There must be something wrong in variable store, do reclaim operation.\r | |
1941 | //\r | |
1942 | Status = Reclaim (\r | |
052ad7e1 | 1943 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r |
8d3a5c82 | 1944 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r |
814bae52 | 1945 | FALSE,\r |
1946 | NULL\r | |
8d3a5c82 | 1947 | );\r |
7800593d LG |
1948 | \r |
1949 | if (EFI_ERROR (Status)) {\r | |
1950 | goto Done;\r | |
1951 | }\r | |
1952 | \r | |
8d3a5c82 | 1953 | break;\r |
1954 | }\r | |
1955 | }\r | |
7800593d LG |
1956 | \r |
1957 | //\r | |
1958 | // Register the event handling function to reclaim variable for OS usage.\r | |
1959 | //\r | |
1960 | Status = EfiCreateEventReadyToBootEx (\r | |
1961 | TPL_NOTIFY, \r | |
1962 | ReclaimForOS, \r | |
1963 | NULL, \r | |
1964 | &ReadyToBootEvent\r | |
1965 | );\r | |
5bb820af | 1966 | } else {\r |
1967 | Status = EFI_VOLUME_CORRUPTED;\r | |
1968 | DEBUG((EFI_D_INFO, "Variable Store header is corrupted\n"));\r | |
8d3a5c82 | 1969 | }\r |
1970 | \r | |
7800593d | 1971 | Done:\r |
8d3a5c82 | 1972 | if (EFI_ERROR (Status)) {\r |
1973 | FreePool (mVariableModuleGlobal);\r | |
1974 | FreePool (VolatileVariableStore);\r | |
1975 | }\r | |
1976 | \r | |
1977 | return Status;\r | |
1978 | }\r | |
052ad7e1 | 1979 | \r |
7c80e839 | 1980 | /**\r |
1981 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE\r | |
1982 | \r | |
1983 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
1984 | It convers pointer to new virtual address.\r | |
1985 | \r | |
1986 | @param Event Event whose notification function is being invoked\r | |
1987 | @param Context Pointer to the notification function's context\r | |
1988 | \r | |
1989 | **/\r | |
052ad7e1 A |
1990 | VOID\r |
1991 | EFIAPI\r | |
1992 | VariableClassAddressChangeEvent (\r | |
1993 | IN EFI_EVENT Event,\r | |
1994 | IN VOID *Context\r | |
1995 | )\r | |
1996 | {\r | |
8a9e0b72 | 1997 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetBlockSize);\r |
1998 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetPhysicalAddress);\r | |
1999 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetAttributes);\r | |
2000 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->SetAttributes);\r | |
2001 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->Read);\r | |
2002 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->Write);\r | |
2003 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->EraseBlocks);\r | |
2004 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance);\r | |
052ad7e1 A |
2005 | EfiConvertPointer (\r |
2006 | 0x0,\r | |
2007 | (VOID **) &mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase\r | |
2008 | );\r | |
2009 | EfiConvertPointer (\r | |
2010 | 0x0,\r | |
2011 | (VOID **) &mVariableModuleGlobal->VariableGlobal.VolatileVariableBase\r | |
2012 | );\r | |
2013 | EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);\r | |
2014 | }\r | |
2015 | \r | |
8a9e0b72 | 2016 | VOID\r |
2017 | EFIAPI\r | |
2018 | FvbNotificationEvent (\r | |
2019 | IN EFI_EVENT Event,\r | |
2020 | IN VOID *Context\r | |
2021 | )\r | |
2022 | {\r | |
2023 | EFI_STATUS Status;\r | |
2024 | EFI_HANDLE *HandleBuffer;\r | |
2025 | EFI_HANDLE FvbHandle;\r | |
2026 | UINTN HandleCount;\r | |
2027 | UINTN Index;\r | |
2028 | EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r | |
2029 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
2030 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
2031 | EFI_FVB_ATTRIBUTES_2 Attributes;\r | |
2032 | EFI_SYSTEM_TABLE *SystemTable;\r | |
2033 | EFI_PHYSICAL_ADDRESS NvStorageVariableBase;\r | |
2034 | \r | |
2035 | SystemTable = (EFI_SYSTEM_TABLE *)Context;\r | |
2036 | Fvb = NULL;\r | |
2037 | FvbHandle = NULL;\r | |
2038 | \r | |
2039 | //\r | |
2040 | // Locate all handles of Fvb protocol\r | |
2041 | //\r | |
2042 | Status = gBS->LocateHandleBuffer (\r | |
2043 | ByProtocol,\r | |
2044 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
2045 | NULL,\r | |
2046 | &HandleCount,\r | |
2047 | &HandleBuffer\r | |
2048 | );\r | |
2049 | if (EFI_ERROR (Status)) {\r | |
2050 | return ;\r | |
2051 | }\r | |
2052 | \r | |
2053 | //\r | |
2054 | // Get the FVB to access variable store\r | |
2055 | //\r | |
2056 | for (Index = 0; Index < HandleCount; Index += 1, Status = EFI_NOT_FOUND) {\r | |
2057 | Status = gBS->HandleProtocol (\r | |
2058 | HandleBuffer[Index],\r | |
2059 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
2060 | (VOID **) &Fvb\r | |
2061 | );\r | |
2062 | if (EFI_ERROR (Status)) {\r | |
2063 | Status = EFI_NOT_FOUND;\r | |
2064 | break;\r | |
2065 | }\r | |
2066 | \r | |
2067 | //\r | |
2068 | // Ensure this FVB protocol supported Write operation.\r | |
2069 | //\r | |
2070 | Status = Fvb->GetAttributes (Fvb, &Attributes);\r | |
2071 | if (EFI_ERROR (Status) || ((Attributes & EFI_FVB2_WRITE_STATUS) == 0)) {\r | |
2072 | continue; \r | |
2073 | }\r | |
2074 | //\r | |
2075 | // Compare the address and select the right one\r | |
2076 | //\r | |
2077 | Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r | |
2078 | if (EFI_ERROR (Status)) {\r | |
2079 | continue;\r | |
2080 | }\r | |
2081 | \r | |
2082 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r | |
2083 | NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r | |
2084 | if ((NvStorageVariableBase >= FvbBaseAddress) && (NvStorageVariableBase < (FvbBaseAddress + FwVolHeader->FvLength))) {\r | |
2085 | FvbHandle = HandleBuffer[Index];\r | |
2086 | Status = EFI_SUCCESS;\r | |
2087 | break;\r | |
2088 | }\r | |
2089 | }\r | |
2090 | \r | |
2091 | FreePool (HandleBuffer);\r | |
2092 | if (!EFI_ERROR (Status)) {\r | |
2093 | Status = VariableCommonInitialize (Fvb);\r | |
2094 | ASSERT_EFI_ERROR (Status);\r | |
2095 | \r | |
2096 | SystemTable->RuntimeServices->GetVariable = RuntimeServiceGetVariable;\r | |
2097 | SystemTable->RuntimeServices->GetNextVariableName = RuntimeServiceGetNextVariableName;\r | |
2098 | SystemTable->RuntimeServices->SetVariable = RuntimeServiceSetVariable;\r | |
2099 | SystemTable->RuntimeServices->QueryVariableInfo = RuntimeServiceQueryVariableInfo;\r | |
2100 | \r | |
2101 | //\r | |
2102 | // Now install the Variable Runtime Architectural Protocol on a new handle\r | |
2103 | //\r | |
2104 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
2105 | &mHandle,\r | |
2106 | &gEfiVariableArchProtocolGuid, NULL,\r | |
2107 | &gEfiVariableWriteArchProtocolGuid, NULL,\r | |
2108 | NULL\r | |
2109 | );\r | |
2110 | ASSERT_EFI_ERROR (Status);\r | |
2111 | \r | |
2112 | Status = gBS->CreateEventEx (\r | |
2113 | EVT_NOTIFY_SIGNAL,\r | |
2114 | TPL_NOTIFY,\r | |
2115 | VariableClassAddressChangeEvent,\r | |
2116 | NULL,\r | |
2117 | &gEfiEventVirtualAddressChangeGuid,\r | |
2118 | &mVirtualAddressChangeEvent\r | |
2119 | );\r | |
2120 | ASSERT_EFI_ERROR (Status);\r | |
2121 | }\r | |
2122 | \r | |
2123 | }\r | |
052ad7e1 A |
2124 | \r |
2125 | /**\r | |
2126 | Variable Driver main entry point. The Variable driver places the 4 EFI\r | |
2127 | runtime services in the EFI System Table and installs arch protocols \r | |
7c80e839 | 2128 | for variable read and write services being availible. It also registers\r |
2129 | notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
052ad7e1 A |
2130 | \r |
2131 | @param[in] ImageHandle The firmware allocated handle for the EFI image. \r | |
2132 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
2133 | \r | |
7c80e839 | 2134 | @retval EFI_SUCCESS Variable service successfully initialized.\r |
052ad7e1 A |
2135 | \r |
2136 | **/\r | |
2137 | EFI_STATUS\r | |
2138 | EFIAPI\r | |
2139 | VariableServiceInitialize (\r | |
2140 | IN EFI_HANDLE ImageHandle,\r | |
2141 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
2142 | )\r | |
2143 | {\r | |
052ad7e1 | 2144 | //\r |
8a9e0b72 | 2145 | // Register FvbNotificationEvent () notify function.\r |
2146 | // \r | |
2147 | EfiCreateProtocolNotifyEvent (\r | |
2148 | &gEfiFirmwareVolumeBlockProtocolGuid,\r | |
2149 | TPL_CALLBACK,\r | |
2150 | FvbNotificationEvent,\r | |
2151 | (VOID *)SystemTable,\r | |
2152 | &mFvbRegistration\r | |
2153 | );\r | |
052ad7e1 A |
2154 | \r |
2155 | return EFI_SUCCESS;\r | |
2156 | }\r | |
2157 | \r |