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052ad7e1 | 1 | /** @file\r |
504214c4 | 2 | \r |
8a2d4996 | 3 | The common variable operation routines shared by DXE_RINTIME variable \r |
4 | module and DXE_SMM variable module.\r | |
052ad7e1 | 5 | \r |
9622df63 | 6 | Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 7 | This program and the accompanying materials \r |
504214c4 LG |
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 |
8d3a5c82 | 20 | \r |
7c80e839 | 21 | ///\r |
8a2d4996 | 22 | /// Define a memory cache that improves the search performance for a variable.\r |
7c80e839 | 23 | ///\r |
8a2d4996 | 24 | VARIABLE_STORE_HEADER *mNvVariableCache = NULL;\r |
aa79b0b3 | 25 | \r |
8a2d4996 | 26 | ///\r |
27 | /// The memory entry used for variable statistics data.\r | |
28 | ///\r | |
29 | VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r | |
8d3a5c82 | 30 | \r |
33a5a666 | 31 | \r |
052ad7e1 A |
32 | /**\r |
33 | Routine used to track statistical information about variable usage. \r | |
34 | The data is stored in the EFI system table so it can be accessed later.\r | |
35 | VariableInfo.efi can dump out the table. Only Boot Services variable \r | |
36 | accesses are tracked by this code. The PcdVariableCollectStatistics\r | |
37 | build flag controls if this feature is enabled. \r | |
38 | \r | |
39 | A read that hits in the cache will have Read and Cache true for \r | |
40 | the transaction. Data is allocated by this routine, but never\r | |
41 | freed.\r | |
42 | \r | |
8a2d4996 | 43 | @param[in] VariableName Name of the Variable to track.\r |
44 | @param[in] VendorGuid Guid of the Variable to track.\r | |
45 | @param[in] Volatile TRUE if volatile FALSE if non-volatile.\r | |
46 | @param[in] Read TRUE if GetVariable() was called.\r | |
47 | @param[in] Write TRUE if SetVariable() was called.\r | |
48 | @param[in] Delete TRUE if deleted via SetVariable().\r | |
052ad7e1 A |
49 | @param[in] Cache TRUE for a cache hit.\r |
50 | \r | |
51 | **/\r | |
33a5a666 A |
52 | VOID\r |
53 | UpdateVariableInfo (\r | |
54 | IN CHAR16 *VariableName,\r | |
55 | IN EFI_GUID *VendorGuid,\r | |
56 | IN BOOLEAN Volatile,\r | |
57 | IN BOOLEAN Read,\r | |
58 | IN BOOLEAN Write,\r | |
59 | IN BOOLEAN Delete,\r | |
60 | IN BOOLEAN Cache\r | |
61 | )\r | |
62 | {\r | |
63 | VARIABLE_INFO_ENTRY *Entry;\r | |
64 | \r | |
65 | if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r | |
66 | \r | |
8a2d4996 | 67 | if (AtRuntime ()) {\r |
68 | // Don't collect statistics at runtime.\r | |
33a5a666 A |
69 | return;\r |
70 | }\r | |
71 | \r | |
72 | if (gVariableInfo == NULL) {\r | |
052ad7e1 | 73 | //\r |
8a2d4996 | 74 | // On the first call allocate a entry and place a pointer to it in\r |
75 | // the EFI System Table.\r | |
052ad7e1 | 76 | //\r |
33a5a666 | 77 | gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r |
052ad7e1 A |
78 | ASSERT (gVariableInfo != NULL);\r |
79 | \r | |
33a5a666 | 80 | CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);\r |
bcd7070d | 81 | gVariableInfo->Name = AllocatePool (StrSize (VariableName));\r |
e6c4ef13 | 82 | ASSERT (gVariableInfo->Name != NULL);\r |
33a5a666 A |
83 | StrCpy (gVariableInfo->Name, VariableName);\r |
84 | gVariableInfo->Volatile = Volatile;\r | |
33a5a666 A |
85 | }\r |
86 | \r | |
87 | \r | |
88 | for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {\r | |
89 | if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {\r | |
90 | if (StrCmp (VariableName, Entry->Name) == 0) {\r | |
91 | if (Read) {\r | |
92 | Entry->ReadCount++;\r | |
93 | }\r | |
94 | if (Write) {\r | |
95 | Entry->WriteCount++;\r | |
96 | }\r | |
97 | if (Delete) {\r | |
98 | Entry->DeleteCount++;\r | |
99 | }\r | |
100 | if (Cache) {\r | |
101 | Entry->CacheCount++;\r | |
102 | }\r | |
103 | \r | |
104 | return;\r | |
105 | }\r | |
106 | }\r | |
107 | \r | |
108 | if (Entry->Next == NULL) {\r | |
052ad7e1 A |
109 | //\r |
110 | // If the entry is not in the table add it.\r | |
8a2d4996 | 111 | // Next iteration of the loop will fill in the data.\r |
052ad7e1 | 112 | //\r |
33a5a666 | 113 | Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r |
052ad7e1 | 114 | ASSERT (Entry->Next != NULL);\r |
33a5a666 A |
115 | \r |
116 | CopyGuid (&Entry->Next->VendorGuid, VendorGuid);\r | |
bcd7070d | 117 | Entry->Next->Name = AllocatePool (StrSize (VariableName));\r |
e6c4ef13 | 118 | ASSERT (Entry->Next->Name != NULL);\r |
33a5a666 A |
119 | StrCpy (Entry->Next->Name, VariableName);\r |
120 | Entry->Next->Volatile = Volatile;\r | |
121 | }\r | |
122 | \r | |
123 | }\r | |
124 | }\r | |
125 | }\r | |
126 | \r | |
127 | \r | |
7c80e839 | 128 | /**\r |
8d3a5c82 | 129 | \r |
130 | This code checks if variable header is valid or not.\r | |
131 | \r | |
7c80e839 | 132 | @param Variable Pointer to the Variable Header.\r |
8d3a5c82 | 133 | \r |
7c80e839 | 134 | @retval TRUE Variable header is valid.\r |
135 | @retval FALSE Variable header is not valid.\r | |
8d3a5c82 | 136 | \r |
7c80e839 | 137 | **/\r |
138 | BOOLEAN\r | |
139 | IsValidVariableHeader (\r | |
140 | IN VARIABLE_HEADER *Variable\r | |
141 | )\r | |
8d3a5c82 | 142 | {\r |
fdb7765f | 143 | if (Variable == NULL || Variable->StartId != VARIABLE_DATA) {\r |
8d3a5c82 | 144 | return FALSE;\r |
145 | }\r | |
146 | \r | |
147 | return TRUE;\r | |
148 | }\r | |
149 | \r | |
052ad7e1 | 150 | \r |
7c80e839 | 151 | /**\r |
152 | \r | |
153 | This function writes data to the FWH at the correct LBA even if the LBAs\r | |
154 | are fragmented.\r | |
155 | \r | |
8a2d4996 | 156 | @param Global Pointer to VARAIBLE_GLOBAL structure.\r |
157 | @param Volatile Point out the Variable is Volatile or Non-Volatile.\r | |
158 | @param SetByIndex TRUE if target pointer is given as index.\r | |
159 | FALSE if target pointer is absolute.\r | |
160 | @param Fvb Pointer to the writable FVB protocol.\r | |
7c80e839 | 161 | @param DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r |
8a2d4996 | 162 | structure.\r |
163 | @param DataSize Size of data to be written.\r | |
164 | @param Buffer Pointer to the buffer from which data is written.\r | |
7c80e839 | 165 | \r |
8a2d4996 | 166 | @retval EFI_INVALID_PARAMETER Parameters not valid.\r |
167 | @retval EFI_SUCCESS Variable store successfully updated.\r | |
7c80e839 | 168 | \r |
169 | **/\r | |
8d3a5c82 | 170 | EFI_STATUS\r |
8d3a5c82 | 171 | UpdateVariableStore (\r |
8a9e0b72 | 172 | IN VARIABLE_GLOBAL *Global,\r |
173 | IN BOOLEAN Volatile,\r | |
174 | IN BOOLEAN SetByIndex,\r | |
175 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r | |
176 | IN UINTN DataPtrIndex,\r | |
177 | IN UINT32 DataSize,\r | |
178 | IN UINT8 *Buffer\r | |
8d3a5c82 | 179 | )\r |
8d3a5c82 | 180 | {\r |
181 | EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r | |
182 | UINTN BlockIndex2;\r | |
183 | UINTN LinearOffset;\r | |
184 | UINTN CurrWriteSize;\r | |
185 | UINTN CurrWritePtr;\r | |
186 | UINT8 *CurrBuffer;\r | |
187 | EFI_LBA LbaNumber;\r | |
188 | UINTN Size;\r | |
189 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
190 | VARIABLE_STORE_HEADER *VolatileBase;\r | |
191 | EFI_PHYSICAL_ADDRESS FvVolHdr;\r | |
192 | EFI_PHYSICAL_ADDRESS DataPtr;\r | |
193 | EFI_STATUS Status;\r | |
194 | \r | |
195 | FwVolHeader = NULL;\r | |
196 | DataPtr = DataPtrIndex;\r | |
197 | \r | |
198 | //\r | |
8a2d4996 | 199 | // Check if the Data is Volatile.\r |
8d3a5c82 | 200 | //\r |
201 | if (!Volatile) {\r | |
b59ad751 | 202 | ASSERT (Fvb != NULL);\r |
8a9e0b72 | 203 | Status = Fvb->GetPhysicalAddress(Fvb, &FvVolHdr);\r |
204 | ASSERT_EFI_ERROR (Status);\r | |
205 | \r | |
8d3a5c82 | 206 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvVolHdr);\r |
207 | //\r | |
208 | // Data Pointer should point to the actual Address where data is to be\r | |
8a2d4996 | 209 | // written.\r |
8d3a5c82 | 210 | //\r |
211 | if (SetByIndex) {\r | |
052ad7e1 | 212 | DataPtr += mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r |
8d3a5c82 | 213 | }\r |
214 | \r | |
215 | if ((DataPtr + DataSize) >= ((EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) FwVolHeader + FwVolHeader->FvLength))) {\r | |
216 | return EFI_INVALID_PARAMETER;\r | |
217 | }\r | |
218 | } else {\r | |
219 | //\r | |
220 | // Data Pointer should point to the actual Address where data is to be\r | |
8a2d4996 | 221 | // written.\r |
8d3a5c82 | 222 | //\r |
052ad7e1 | 223 | VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r |
8d3a5c82 | 224 | if (SetByIndex) {\r |
052ad7e1 | 225 | DataPtr += mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r |
8d3a5c82 | 226 | }\r |
227 | \r | |
228 | if ((DataPtr + DataSize) >= ((UINTN) ((UINT8 *) VolatileBase + VolatileBase->Size))) {\r | |
229 | return EFI_INVALID_PARAMETER;\r | |
230 | }\r | |
c6492839 | 231 | \r |
232 | //\r | |
233 | // If Volatile Variable just do a simple mem copy.\r | |
234 | // \r | |
235 | CopyMem ((UINT8 *)(UINTN)DataPtr, Buffer, DataSize);\r | |
8d3a5c82 | 236 | return EFI_SUCCESS;\r |
237 | }\r | |
c6492839 | 238 | \r |
8d3a5c82 | 239 | //\r |
8a2d4996 | 240 | // If we are here we are dealing with Non-Volatile Variables.\r |
8d3a5c82 | 241 | //\r |
242 | LinearOffset = (UINTN) FwVolHeader;\r | |
243 | CurrWritePtr = (UINTN) DataPtr;\r | |
244 | CurrWriteSize = DataSize;\r | |
245 | CurrBuffer = Buffer;\r | |
246 | LbaNumber = 0;\r | |
247 | \r | |
248 | if (CurrWritePtr < LinearOffset) {\r | |
249 | return EFI_INVALID_PARAMETER;\r | |
250 | }\r | |
251 | \r | |
252 | for (PtrBlockMapEntry = FwVolHeader->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r | |
253 | for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r | |
254 | //\r | |
255 | // Check to see if the Variable Writes are spanning through multiple\r | |
256 | // blocks.\r | |
257 | //\r | |
258 | if ((CurrWritePtr >= LinearOffset) && (CurrWritePtr < LinearOffset + PtrBlockMapEntry->Length)) {\r | |
259 | if ((CurrWritePtr + CurrWriteSize) <= (LinearOffset + PtrBlockMapEntry->Length)) {\r | |
8a9e0b72 | 260 | Status = Fvb->Write (\r |
261 | Fvb,\r | |
8d3a5c82 | 262 | LbaNumber,\r |
263 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
264 | &CurrWriteSize,\r | |
265 | CurrBuffer\r | |
266 | );\r | |
8a9e0b72 | 267 | return Status;\r |
8d3a5c82 | 268 | } else {\r |
269 | Size = (UINT32) (LinearOffset + PtrBlockMapEntry->Length - CurrWritePtr);\r | |
8a9e0b72 | 270 | Status = Fvb->Write (\r |
271 | Fvb,\r | |
8d3a5c82 | 272 | LbaNumber,\r |
273 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
274 | &Size,\r | |
275 | CurrBuffer\r | |
276 | );\r | |
277 | if (EFI_ERROR (Status)) {\r | |
278 | return Status;\r | |
279 | }\r | |
280 | \r | |
281 | CurrWritePtr = LinearOffset + PtrBlockMapEntry->Length;\r | |
282 | CurrBuffer = CurrBuffer + Size;\r | |
283 | CurrWriteSize = CurrWriteSize - Size;\r | |
284 | }\r | |
285 | }\r | |
286 | \r | |
287 | LinearOffset += PtrBlockMapEntry->Length;\r | |
288 | LbaNumber++;\r | |
289 | }\r | |
290 | }\r | |
291 | \r | |
292 | return EFI_SUCCESS;\r | |
293 | }\r | |
294 | \r | |
052ad7e1 | 295 | \r |
7c80e839 | 296 | /**\r |
8d3a5c82 | 297 | \r |
298 | This code gets the current status of Variable Store.\r | |
299 | \r | |
7c80e839 | 300 | @param VarStoreHeader Pointer to the Variable Store Header.\r |
8d3a5c82 | 301 | \r |
8a2d4996 | 302 | @retval EfiRaw Variable store status is raw.\r |
303 | @retval EfiValid Variable store status is valid.\r | |
304 | @retval EfiInvalid Variable store status is invalid.\r | |
8d3a5c82 | 305 | \r |
7c80e839 | 306 | **/\r |
307 | VARIABLE_STORE_STATUS\r | |
308 | GetVariableStoreStatus (\r | |
309 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
310 | )\r | |
8d3a5c82 | 311 | {\r |
3709c4cd | 312 | if (CompareGuid (&VarStoreHeader->Signature, &gEfiVariableGuid) &&\r |
8d3a5c82 | 313 | VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r |
314 | VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r | |
315 | ) {\r | |
316 | \r | |
317 | return EfiValid;\r | |
3709c4cd | 318 | } else if (((UINT32 *)(&VarStoreHeader->Signature))[0] == 0xffffffff &&\r |
319 | ((UINT32 *)(&VarStoreHeader->Signature))[1] == 0xffffffff &&\r | |
320 | ((UINT32 *)(&VarStoreHeader->Signature))[2] == 0xffffffff &&\r | |
321 | ((UINT32 *)(&VarStoreHeader->Signature))[3] == 0xffffffff &&\r | |
322 | VarStoreHeader->Size == 0xffffffff &&\r | |
323 | VarStoreHeader->Format == 0xff &&\r | |
324 | VarStoreHeader->State == 0xff\r | |
8d3a5c82 | 325 | ) {\r |
326 | \r | |
327 | return EfiRaw;\r | |
328 | } else {\r | |
329 | return EfiInvalid;\r | |
330 | }\r | |
331 | }\r | |
332 | \r | |
130e2569 | 333 | \r |
7c80e839 | 334 | /**\r |
130e2569 | 335 | \r |
336 | This code gets the size of name of variable.\r | |
337 | \r | |
8a2d4996 | 338 | @param Variable Pointer to the Variable Header.\r |
130e2569 | 339 | \r |
8a2d4996 | 340 | @return UINTN Size of variable in bytes.\r |
130e2569 | 341 | \r |
7c80e839 | 342 | **/\r |
343 | UINTN\r | |
344 | NameSizeOfVariable (\r | |
345 | IN VARIABLE_HEADER *Variable\r | |
346 | )\r | |
130e2569 | 347 | {\r |
348 | if (Variable->State == (UINT8) (-1) ||\r | |
7c80e839 | 349 | Variable->DataSize == (UINT32) (-1) ||\r |
350 | Variable->NameSize == (UINT32) (-1) ||\r | |
351 | Variable->Attributes == (UINT32) (-1)) {\r | |
130e2569 | 352 | return 0;\r |
353 | }\r | |
354 | return (UINTN) Variable->NameSize;\r | |
355 | }\r | |
356 | \r | |
7c80e839 | 357 | /**\r |
130e2569 | 358 | \r |
7c80e839 | 359 | This code gets the size of variable data.\r |
130e2569 | 360 | \r |
8a2d4996 | 361 | @param Variable Pointer to the Variable Header.\r |
130e2569 | 362 | \r |
8a2d4996 | 363 | @return Size of variable in bytes.\r |
130e2569 | 364 | \r |
7c80e839 | 365 | **/\r |
366 | UINTN\r | |
367 | DataSizeOfVariable (\r | |
368 | IN VARIABLE_HEADER *Variable\r | |
369 | )\r | |
130e2569 | 370 | {\r |
7c80e839 | 371 | if (Variable->State == (UINT8) (-1) ||\r |
372 | Variable->DataSize == (UINT32) (-1) ||\r | |
373 | Variable->NameSize == (UINT32) (-1) ||\r | |
374 | Variable->Attributes == (UINT32) (-1)) {\r | |
130e2569 | 375 | return 0;\r |
376 | }\r | |
377 | return (UINTN) Variable->DataSize;\r | |
378 | }\r | |
379 | \r | |
7c80e839 | 380 | /**\r |
130e2569 | 381 | \r |
382 | This code gets the pointer to the variable name.\r | |
383 | \r | |
8a2d4996 | 384 | @param Variable Pointer to the Variable Header.\r |
130e2569 | 385 | \r |
8a2d4996 | 386 | @return Pointer to Variable Name which is Unicode encoding.\r |
130e2569 | 387 | \r |
7c80e839 | 388 | **/\r |
389 | CHAR16 *\r | |
390 | GetVariableNamePtr (\r | |
391 | IN VARIABLE_HEADER *Variable\r | |
392 | )\r | |
130e2569 | 393 | {\r |
394 | \r | |
395 | return (CHAR16 *) (Variable + 1);\r | |
396 | }\r | |
397 | \r | |
7c80e839 | 398 | /**\r |
8d3a5c82 | 399 | \r |
400 | This code gets the pointer to the variable data.\r | |
401 | \r | |
8a2d4996 | 402 | @param Variable Pointer to the Variable Header.\r |
8d3a5c82 | 403 | \r |
8a2d4996 | 404 | @return Pointer to Variable Data.\r |
8d3a5c82 | 405 | \r |
7c80e839 | 406 | **/\r |
407 | UINT8 *\r | |
408 | GetVariableDataPtr (\r | |
409 | IN VARIABLE_HEADER *Variable\r | |
410 | )\r | |
8d3a5c82 | 411 | {\r |
130e2569 | 412 | UINTN Value;\r |
413 | \r | |
8d3a5c82 | 414 | //\r |
8a2d4996 | 415 | // Be careful about pad size for alignment.\r |
8d3a5c82 | 416 | //\r |
130e2569 | 417 | Value = (UINTN) GetVariableNamePtr (Variable);\r |
418 | Value += NameSizeOfVariable (Variable);\r | |
419 | Value += GET_PAD_SIZE (NameSizeOfVariable (Variable));\r | |
420 | \r | |
421 | return (UINT8 *) Value;\r | |
8d3a5c82 | 422 | }\r |
423 | \r | |
052ad7e1 | 424 | \r |
7c80e839 | 425 | /**\r |
8d3a5c82 | 426 | \r |
427 | This code gets the pointer to the next variable header.\r | |
428 | \r | |
8a2d4996 | 429 | @param Variable Pointer to the Variable Header.\r |
8d3a5c82 | 430 | \r |
8a2d4996 | 431 | @return Pointer to next variable header.\r |
8d3a5c82 | 432 | \r |
7c80e839 | 433 | **/\r |
434 | VARIABLE_HEADER *\r | |
435 | GetNextVariablePtr (\r | |
436 | IN VARIABLE_HEADER *Variable\r | |
437 | )\r | |
8d3a5c82 | 438 | {\r |
130e2569 | 439 | UINTN Value;\r |
440 | \r | |
8d3a5c82 | 441 | if (!IsValidVariableHeader (Variable)) {\r |
442 | return NULL;\r | |
443 | }\r | |
130e2569 | 444 | \r |
445 | Value = (UINTN) GetVariableDataPtr (Variable);\r | |
446 | Value += DataSizeOfVariable (Variable);\r | |
447 | Value += GET_PAD_SIZE (DataSizeOfVariable (Variable));\r | |
448 | \r | |
8d3a5c82 | 449 | //\r |
8a2d4996 | 450 | // Be careful about pad size for alignment.\r |
8d3a5c82 | 451 | //\r |
130e2569 | 452 | return (VARIABLE_HEADER *) HEADER_ALIGN (Value);\r |
8d3a5c82 | 453 | }\r |
454 | \r | |
7c80e839 | 455 | /**\r |
9cad030b | 456 | \r |
7c80e839 | 457 | Gets the pointer to the first variable header in given variable store area.\r |
9cad030b | 458 | \r |
7c80e839 | 459 | @param VarStoreHeader Pointer to the Variable Store Header.\r |
9cad030b | 460 | \r |
8a2d4996 | 461 | @return Pointer to the first variable header.\r |
9cad030b | 462 | \r |
7c80e839 | 463 | **/\r |
464 | VARIABLE_HEADER *\r | |
465 | GetStartPointer (\r | |
466 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
467 | )\r | |
9cad030b | 468 | {\r |
469 | //\r | |
8a2d4996 | 470 | // The end of variable store.\r |
9cad030b | 471 | //\r |
472 | return (VARIABLE_HEADER *) HEADER_ALIGN (VarStoreHeader + 1);\r | |
473 | }\r | |
052ad7e1 | 474 | \r |
7c80e839 | 475 | /**\r |
8d3a5c82 | 476 | \r |
7c80e839 | 477 | Gets the pointer to the end of the variable storage area.\r |
8d3a5c82 | 478 | \r |
7c80e839 | 479 | This function gets pointer to the end of the variable storage\r |
480 | area, according to the input variable store header.\r | |
8d3a5c82 | 481 | \r |
8a2d4996 | 482 | @param VarStoreHeader Pointer to the Variable Store Header.\r |
8d3a5c82 | 483 | \r |
8a2d4996 | 484 | @return Pointer to the end of the variable storage area. \r |
8d3a5c82 | 485 | \r |
7c80e839 | 486 | **/\r |
487 | VARIABLE_HEADER *\r | |
488 | GetEndPointer (\r | |
489 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
490 | )\r | |
8d3a5c82 | 491 | {\r |
492 | //\r | |
493 | // The end of variable store\r | |
494 | //\r | |
9cad030b | 495 | return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r |
8d3a5c82 | 496 | }\r |
497 | \r | |
052ad7e1 | 498 | \r |
7c80e839 | 499 | /**\r |
500 | \r | |
501 | Variable store garbage collection and reclaim operation.\r | |
502 | \r | |
8a2d4996 | 503 | @param VariableBase Base address of variable store.\r |
504 | @param LastVariableOffset Offset of last variable.\r | |
505 | @param IsVolatile The variable store is volatile or not;\r | |
506 | if it is non-volatile, need FTW.\r | |
507 | @param UpdatingVariable Pointer to updating variable.\r | |
7c80e839 | 508 | \r |
509 | @return EFI_OUT_OF_RESOURCES\r | |
510 | @return EFI_SUCCESS\r | |
511 | @return Others\r | |
512 | \r | |
513 | **/\r | |
8d3a5c82 | 514 | EFI_STATUS\r |
8d3a5c82 | 515 | Reclaim (\r |
516 | IN EFI_PHYSICAL_ADDRESS VariableBase,\r | |
517 | OUT UINTN *LastVariableOffset,\r | |
814bae52 | 518 | IN BOOLEAN IsVolatile,\r |
519 | IN VARIABLE_HEADER *UpdatingVariable\r | |
8d3a5c82 | 520 | )\r |
8d3a5c82 | 521 | {\r |
522 | VARIABLE_HEADER *Variable;\r | |
814bae52 | 523 | VARIABLE_HEADER *AddedVariable;\r |
8d3a5c82 | 524 | VARIABLE_HEADER *NextVariable;\r |
814bae52 | 525 | VARIABLE_HEADER *NextAddedVariable;\r |
8d3a5c82 | 526 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r |
527 | UINT8 *ValidBuffer;\r | |
814bae52 | 528 | UINTN MaximumBufferSize;\r |
8d3a5c82 | 529 | UINTN VariableSize;\r |
49e70927 | 530 | UINTN VariableNameSize;\r |
531 | UINTN UpdatingVariableNameSize;\r | |
814bae52 | 532 | UINTN NameSize;\r |
8d3a5c82 | 533 | UINT8 *CurrPtr;\r |
814bae52 | 534 | VOID *Point0;\r |
535 | VOID *Point1;\r | |
536 | BOOLEAN FoundAdded;\r | |
8d3a5c82 | 537 | EFI_STATUS Status;\r |
49e70927 | 538 | CHAR16 *VariableNamePtr;\r |
539 | CHAR16 *UpdatingVariableNamePtr;\r | |
8d3a5c82 | 540 | \r |
541 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r | |
2fcdca1d | 542 | //\r |
8a2d4996 | 543 | // Recalculate the total size of Common/HwErr type variables in non-volatile area.\r |
2fcdca1d | 544 | //\r |
545 | if (!IsVolatile) {\r | |
546 | mVariableModuleGlobal->CommonVariableTotalSize = 0;\r | |
547 | mVariableModuleGlobal->HwErrVariableTotalSize = 0;\r | |
548 | }\r | |
8d3a5c82 | 549 | \r |
550 | //\r | |
551 | // Start Pointers for the variable.\r | |
552 | //\r | |
814bae52 | 553 | Variable = GetStartPointer (VariableStoreHeader);\r |
554 | MaximumBufferSize = sizeof (VARIABLE_STORE_HEADER);\r | |
8d3a5c82 | 555 | \r |
556 | while (IsValidVariableHeader (Variable)) {\r | |
557 | NextVariable = GetNextVariablePtr (Variable);\r | |
814bae52 | 558 | if (Variable->State == VAR_ADDED || \r |
559 | Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r | |
560 | ) {\r | |
8d3a5c82 | 561 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
814bae52 | 562 | MaximumBufferSize += VariableSize;\r |
8d3a5c82 | 563 | }\r |
564 | \r | |
565 | Variable = NextVariable;\r | |
566 | }\r | |
567 | \r | |
814bae52 | 568 | //\r |
569 | // Reserve the 1 Bytes with Oxff to identify the \r | |
570 | // end of the variable buffer. \r | |
571 | // \r | |
572 | MaximumBufferSize += 1;\r | |
573 | ValidBuffer = AllocatePool (MaximumBufferSize);\r | |
8d3a5c82 | 574 | if (ValidBuffer == NULL) {\r |
575 | return EFI_OUT_OF_RESOURCES;\r | |
576 | }\r | |
577 | \r | |
814bae52 | 578 | SetMem (ValidBuffer, MaximumBufferSize, 0xff);\r |
8d3a5c82 | 579 | \r |
580 | //\r | |
8a2d4996 | 581 | // Copy variable store header.\r |
8d3a5c82 | 582 | //\r |
814bae52 | 583 | CopyMem (ValidBuffer, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r |
584 | CurrPtr = (UINT8 *) GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
8d3a5c82 | 585 | \r |
814bae52 | 586 | //\r |
8a2d4996 | 587 | // Reinstall all ADDED variables as long as they are not identical to Updating Variable.\r |
814bae52 | 588 | // \r |
589 | Variable = GetStartPointer (VariableStoreHeader);\r | |
8d3a5c82 | 590 | while (IsValidVariableHeader (Variable)) {\r |
591 | NextVariable = GetNextVariablePtr (Variable);\r | |
592 | if (Variable->State == VAR_ADDED) {\r | |
5ead4a07 | 593 | if (UpdatingVariable != NULL) {\r |
594 | if (UpdatingVariable == Variable) {\r | |
595 | Variable = NextVariable;\r | |
596 | continue;\r | |
597 | }\r | |
49e70927 | 598 | \r |
599 | VariableNameSize = NameSizeOfVariable(Variable);\r | |
600 | UpdatingVariableNameSize = NameSizeOfVariable(UpdatingVariable);\r | |
601 | \r | |
602 | VariableNamePtr = GetVariableNamePtr (Variable);\r | |
603 | UpdatingVariableNamePtr = GetVariableNamePtr (UpdatingVariable);\r | |
5ead4a07 | 604 | if (CompareGuid (&Variable->VendorGuid, &UpdatingVariable->VendorGuid) &&\r |
49e70927 | 605 | VariableNameSize == UpdatingVariableNameSize &&\r |
606 | CompareMem (VariableNamePtr, UpdatingVariableNamePtr, VariableNameSize) == 0 ) {\r | |
5ead4a07 | 607 | Variable = NextVariable;\r |
608 | continue;\r | |
609 | }\r | |
610 | }\r | |
8d3a5c82 | 611 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
612 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
613 | CurrPtr += VariableSize;\r | |
2fcdca1d | 614 | if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
615 | mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r | |
616 | } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
617 | mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r | |
618 | }\r | |
8d3a5c82 | 619 | }\r |
8d3a5c82 | 620 | Variable = NextVariable;\r |
621 | }\r | |
5ead4a07 | 622 | \r |
623 | //\r | |
8a2d4996 | 624 | // Reinstall the variable being updated if it is not NULL.\r |
5ead4a07 | 625 | //\r |
626 | if (UpdatingVariable != NULL) {\r | |
627 | VariableSize = (UINTN)(GetNextVariablePtr (UpdatingVariable)) - (UINTN)UpdatingVariable;\r | |
628 | CopyMem (CurrPtr, (UINT8 *) UpdatingVariable, VariableSize);\r | |
629 | CurrPtr += VariableSize;\r | |
2fcdca1d | 630 | if ((!IsVolatile) && ((UpdatingVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
631 | mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r | |
632 | } else if ((!IsVolatile) && ((UpdatingVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
633 | mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r | |
634 | }\r | |
5ead4a07 | 635 | }\r |
636 | \r | |
814bae52 | 637 | //\r |
8a2d4996 | 638 | // Reinstall all in delete transition variables.\r |
814bae52 | 639 | // \r |
640 | Variable = GetStartPointer (VariableStoreHeader);\r | |
641 | while (IsValidVariableHeader (Variable)) {\r | |
642 | NextVariable = GetNextVariablePtr (Variable);\r | |
5ead4a07 | 643 | if (Variable != UpdatingVariable && Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r |
814bae52 | 644 | \r |
645 | //\r | |
646 | // Buffer has cached all ADDED variable. \r | |
647 | // Per IN_DELETED variable, we have to guarantee that\r | |
648 | // no ADDED one in previous buffer. \r | |
649 | // \r | |
650 | \r | |
651 | FoundAdded = FALSE;\r | |
652 | AddedVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
653 | while (IsValidVariableHeader (AddedVariable)) {\r | |
654 | NextAddedVariable = GetNextVariablePtr (AddedVariable);\r | |
655 | NameSize = NameSizeOfVariable (AddedVariable);\r | |
656 | if (CompareGuid (&AddedVariable->VendorGuid, &Variable->VendorGuid) &&\r | |
657 | NameSize == NameSizeOfVariable (Variable)\r | |
658 | ) {\r | |
659 | Point0 = (VOID *) GetVariableNamePtr (AddedVariable);\r | |
660 | Point1 = (VOID *) GetVariableNamePtr (Variable);\r | |
5ead4a07 | 661 | if (CompareMem (Point0, Point1, NameSizeOfVariable (AddedVariable)) == 0) {\r |
814bae52 | 662 | FoundAdded = TRUE;\r |
663 | break;\r | |
664 | }\r | |
665 | }\r | |
666 | AddedVariable = NextAddedVariable;\r | |
667 | }\r | |
668 | if (!FoundAdded) {\r | |
5ead4a07 | 669 | //\r |
8a2d4996 | 670 | // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED.\r |
5ead4a07 | 671 | //\r |
814bae52 | 672 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
673 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
5ead4a07 | 674 | ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r |
814bae52 | 675 | CurrPtr += VariableSize;\r |
2fcdca1d | 676 | if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
677 | mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r | |
678 | } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
679 | mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r | |
680 | }\r | |
814bae52 | 681 | }\r |
682 | }\r | |
683 | \r | |
684 | Variable = NextVariable;\r | |
685 | }\r | |
8d3a5c82 | 686 | \r |
687 | if (IsVolatile) {\r | |
688 | //\r | |
8a2d4996 | 689 | // If volatile variable store, just copy valid buffer.\r |
8d3a5c82 | 690 | //\r |
691 | SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r | |
814bae52 | 692 | CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) (CurrPtr - (UINT8 *) ValidBuffer));\r |
8a2d4996 | 693 | Status = EFI_SUCCESS;\r |
8d3a5c82 | 694 | } else {\r |
695 | //\r | |
696 | // If non-volatile variable store, perform FTW here.\r | |
697 | //\r | |
698 | Status = FtwVariableSpace (\r | |
699 | VariableBase,\r | |
700 | ValidBuffer,\r | |
814bae52 | 701 | (UINTN) (CurrPtr - (UINT8 *) ValidBuffer)\r |
8d3a5c82 | 702 | );\r |
8a2d4996 | 703 | CopyMem (mNvVariableCache, (CHAR8 *)(UINTN)VariableBase, VariableStoreHeader->Size);\r |
8d3a5c82 | 704 | }\r |
814bae52 | 705 | if (!EFI_ERROR (Status)) {\r |
706 | *LastVariableOffset = (UINTN) (CurrPtr - (UINT8 *) ValidBuffer);\r | |
707 | } else {\r | |
8d3a5c82 | 708 | *LastVariableOffset = 0;\r |
709 | }\r | |
710 | \r | |
814bae52 | 711 | FreePool (ValidBuffer);\r |
712 | \r | |
8d3a5c82 | 713 | return Status;\r |
714 | }\r | |
715 | \r | |
0f7aff72 RN |
716 | /**\r |
717 | Find the variable in the specified variable store.\r | |
718 | \r | |
719 | @param VariableName Name of the variable to be found\r | |
720 | @param VendorGuid Vendor GUID to be found.\r | |
9622df63 SZ |
721 | @param IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r |
722 | check at runtime when searching variable.\r | |
0f7aff72 RN |
723 | @param PtrTrack Variable Track Pointer structure that contains Variable Information.\r |
724 | \r | |
725 | @retval EFI_SUCCESS Variable found successfully\r | |
726 | @retval EFI_NOT_FOUND Variable not found\r | |
727 | **/\r | |
728 | EFI_STATUS\r | |
729 | FindVariableEx (\r | |
730 | IN CHAR16 *VariableName,\r | |
731 | IN EFI_GUID *VendorGuid,\r | |
9622df63 | 732 | IN BOOLEAN IgnoreRtCheck,\r |
0f7aff72 RN |
733 | IN OUT VARIABLE_POINTER_TRACK *PtrTrack\r |
734 | )\r | |
735 | {\r | |
736 | VARIABLE_HEADER *InDeletedVariable;\r | |
737 | VOID *Point;\r | |
738 | \r | |
739 | //\r | |
740 | // Find the variable by walk through HOB, volatile and non-volatile variable store.\r | |
741 | //\r | |
742 | InDeletedVariable = NULL;\r | |
743 | \r | |
744 | for ( PtrTrack->CurrPtr = PtrTrack->StartPtr\r | |
745 | ; (PtrTrack->CurrPtr < PtrTrack->EndPtr) && IsValidVariableHeader (PtrTrack->CurrPtr)\r | |
746 | ; PtrTrack->CurrPtr = GetNextVariablePtr (PtrTrack->CurrPtr)\r | |
747 | ) {\r | |
748 | if (PtrTrack->CurrPtr->State == VAR_ADDED || \r | |
749 | PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r | |
750 | ) {\r | |
9622df63 | 751 | if (IgnoreRtCheck || !AtRuntime () || ((PtrTrack->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r |
0f7aff72 RN |
752 | if (VariableName[0] == 0) {\r |
753 | if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
754 | InDeletedVariable = PtrTrack->CurrPtr;\r | |
755 | } else {\r | |
756 | return EFI_SUCCESS;\r | |
757 | }\r | |
758 | } else {\r | |
759 | if (CompareGuid (VendorGuid, &PtrTrack->CurrPtr->VendorGuid)) {\r | |
760 | Point = (VOID *) GetVariableNamePtr (PtrTrack->CurrPtr);\r | |
761 | \r | |
762 | ASSERT (NameSizeOfVariable (PtrTrack->CurrPtr) != 0);\r | |
763 | if (CompareMem (VariableName, Point, NameSizeOfVariable (PtrTrack->CurrPtr)) == 0) {\r | |
764 | if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r | |
765 | InDeletedVariable = PtrTrack->CurrPtr;\r | |
766 | } else {\r | |
767 | return EFI_SUCCESS;\r | |
768 | }\r | |
769 | }\r | |
770 | }\r | |
771 | }\r | |
772 | }\r | |
773 | }\r | |
774 | }\r | |
775 | \r | |
776 | PtrTrack->CurrPtr = InDeletedVariable;\r | |
777 | return (PtrTrack->CurrPtr == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;\r | |
778 | }\r | |
779 | \r | |
33a5a666 | 780 | \r |
7c80e839 | 781 | /**\r |
782 | Finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
783 | \r | |
784 | This code finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
785 | If VariableName is an empty string, then we just return the first\r | |
786 | qualified variable without comparing VariableName and VendorGuid.\r | |
9622df63 SZ |
787 | If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check\r |
788 | at runtime when searching existing variable, only VariableName and VendorGuid are compared.\r | |
789 | Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.\r | |
7c80e839 | 790 | \r |
8a2d4996 | 791 | @param VariableName Name of the variable to be found.\r |
7c80e839 | 792 | @param VendorGuid Vendor GUID to be found.\r |
793 | @param PtrTrack VARIABLE_POINTER_TRACK structure for output,\r | |
794 | including the range searched and the target position.\r | |
795 | @param Global Pointer to VARIABLE_GLOBAL structure, including\r | |
796 | base of volatile variable storage area, base of\r | |
797 | NV variable storage area, and a lock.\r | |
9622df63 SZ |
798 | @param IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r |
799 | check at runtime when searching variable.\r | |
7c80e839 | 800 | \r |
801 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r | |
8a2d4996 | 802 | VendorGuid is NULL.\r |
803 | @retval EFI_SUCCESS Variable successfully found.\r | |
255a3f33 | 804 | @retval EFI_NOT_FOUND Variable not found\r |
33a5a666 | 805 | \r |
7c80e839 | 806 | **/\r |
8d3a5c82 | 807 | EFI_STATUS\r |
8d3a5c82 | 808 | FindVariable (\r |
809 | IN CHAR16 *VariableName,\r | |
810 | IN EFI_GUID *VendorGuid,\r | |
811 | OUT VARIABLE_POINTER_TRACK *PtrTrack,\r | |
9622df63 SZ |
812 | IN VARIABLE_GLOBAL *Global,\r |
813 | IN BOOLEAN IgnoreRtCheck\r | |
8d3a5c82 | 814 | )\r |
8d3a5c82 | 815 | {\r |
0f7aff72 RN |
816 | EFI_STATUS Status;\r |
817 | VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r | |
818 | VARIABLE_STORE_TYPE Type;\r | |
819 | \r | |
820 | if (VariableName[0] != 0 && VendorGuid == NULL) {\r | |
821 | return EFI_INVALID_PARAMETER;\r | |
822 | }\r | |
8d3a5c82 | 823 | \r |
8d3a5c82 | 824 | //\r |
0f7aff72 | 825 | // 0: Volatile, 1: HOB, 2: Non-Volatile.\r |
36873a61 | 826 | // The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName\r |
8a2d4996 | 827 | // make use of this mapping to implement search algorithm.\r |
8d3a5c82 | 828 | //\r |
0f7aff72 RN |
829 | VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) Global->VolatileVariableBase;\r |
830 | VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) Global->HobVariableBase;\r | |
831 | VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r | |
8d3a5c82 | 832 | \r |
833 | //\r | |
0f7aff72 | 834 | // Find the variable by walk through HOB, volatile and non-volatile variable store.\r |
8d3a5c82 | 835 | //\r |
0f7aff72 RN |
836 | for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r |
837 | if (VariableStoreHeader[Type] == NULL) {\r | |
838 | continue;\r | |
839 | }\r | |
814bae52 | 840 | \r |
0f7aff72 RN |
841 | PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r |
842 | PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r | |
843 | PtrTrack->Volatile = (BOOLEAN) (Type == VariableStoreTypeVolatile);\r | |
8d3a5c82 | 844 | \r |
9622df63 | 845 | Status = FindVariableEx (VariableName, VendorGuid, IgnoreRtCheck, PtrTrack);\r |
0f7aff72 RN |
846 | if (!EFI_ERROR (Status)) {\r |
847 | return Status;\r | |
814bae52 | 848 | }\r |
8d3a5c82 | 849 | }\r |
8d3a5c82 | 850 | return EFI_NOT_FOUND;\r |
851 | }\r | |
852 | \r | |
7c80e839 | 853 | /**\r |
72399dae | 854 | Get index from supported language codes according to language string.\r |
855 | \r | |
856 | This code is used to get corresponding index in supported language codes. It can handle\r | |
0254efc0 | 857 | RFC4646 and ISO639 language tags.\r |
72399dae | 858 | In ISO639 language tags, take 3-characters as a delimitation to find matched string and calculate the index.\r |
0254efc0 | 859 | In RFC4646 language tags, take semicolon as a delimitation to find matched string and calculate the index.\r |
72399dae | 860 | \r |
861 | For example:\r | |
862 | SupportedLang = "engfraengfra"\r | |
863 | Lang = "eng"\r | |
864 | Iso639Language = TRUE\r | |
865 | The return value is "0".\r | |
866 | Another example:\r | |
867 | SupportedLang = "en;fr;en-US;fr-FR"\r | |
868 | Lang = "fr-FR"\r | |
869 | Iso639Language = FALSE\r | |
870 | The return value is "3".\r | |
871 | \r | |
872 | @param SupportedLang Platform supported language codes.\r | |
873 | @param Lang Configured language.\r | |
0254efc0 | 874 | @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r |
72399dae | 875 | \r |
8a2d4996 | 876 | @retval The index of language in the language codes.\r |
8d3a5c82 | 877 | \r |
7c80e839 | 878 | **/\r |
72399dae | 879 | UINTN\r |
72399dae | 880 | GetIndexFromSupportedLangCodes(\r |
881 | IN CHAR8 *SupportedLang,\r | |
882 | IN CHAR8 *Lang,\r | |
883 | IN BOOLEAN Iso639Language\r | |
884 | ) \r | |
8d3a5c82 | 885 | {\r |
72399dae | 886 | UINTN Index;\r |
255a3f33 RN |
887 | UINTN CompareLength;\r |
888 | UINTN LanguageLength;\r | |
72399dae | 889 | \r |
72399dae | 890 | if (Iso639Language) {\r |
255a3f33 | 891 | CompareLength = ISO_639_2_ENTRY_SIZE;\r |
72399dae | 892 | for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {\r |
893 | if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {\r | |
894 | //\r | |
895 | // Successfully find the index of Lang string in SupportedLang string.\r | |
896 | //\r | |
897 | Index = Index / CompareLength;\r | |
898 | return Index;\r | |
899 | }\r | |
900 | }\r | |
901 | ASSERT (FALSE);\r | |
902 | return 0;\r | |
903 | } else {\r | |
904 | //\r | |
0254efc0 | 905 | // Compare RFC4646 language code\r |
72399dae | 906 | //\r |
255a3f33 RN |
907 | Index = 0;\r |
908 | for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);\r | |
909 | \r | |
910 | for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang += CompareLength) {\r | |
72399dae | 911 | //\r |
255a3f33 | 912 | // Skip ';' characters in SupportedLang\r |
72399dae | 913 | //\r |
255a3f33 RN |
914 | for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);\r |
915 | //\r | |
916 | // Determine the length of the next language code in SupportedLang\r | |
917 | //\r | |
918 | for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);\r | |
919 | \r | |
920 | if ((CompareLength == LanguageLength) && \r | |
921 | (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {\r | |
72399dae | 922 | //\r |
923 | // Successfully find the index of Lang string in SupportedLang string.\r | |
924 | //\r | |
925 | return Index;\r | |
926 | }\r | |
72399dae | 927 | }\r |
928 | ASSERT (FALSE);\r | |
929 | return 0;\r | |
8d3a5c82 | 930 | }\r |
72399dae | 931 | }\r |
33a5a666 | 932 | \r |
72399dae | 933 | /**\r |
934 | Get language string from supported language codes according to index.\r | |
935 | \r | |
8a2d4996 | 936 | This code is used to get corresponding language strings in supported language codes. It can handle\r |
0254efc0 | 937 | RFC4646 and ISO639 language tags.\r |
72399dae | 938 | In ISO639 language tags, take 3-characters as a delimitation. Find language string according to the index.\r |
0254efc0 | 939 | In RFC4646 language tags, take semicolon as a delimitation. Find language string according to the index.\r |
72399dae | 940 | \r |
941 | For example:\r | |
942 | SupportedLang = "engfraengfra"\r | |
943 | Index = "1"\r | |
944 | Iso639Language = TRUE\r | |
945 | The return value is "fra".\r | |
946 | Another example:\r | |
947 | SupportedLang = "en;fr;en-US;fr-FR"\r | |
948 | Index = "1"\r | |
949 | Iso639Language = FALSE\r | |
950 | The return value is "fr".\r | |
951 | \r | |
952 | @param SupportedLang Platform supported language codes.\r | |
8a2d4996 | 953 | @param Index The index in supported language codes.\r |
0254efc0 | 954 | @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r |
72399dae | 955 | \r |
8a2d4996 | 956 | @retval The language string in the language codes.\r |
8d3a5c82 | 957 | \r |
72399dae | 958 | **/\r |
959 | CHAR8 *\r | |
72399dae | 960 | GetLangFromSupportedLangCodes (\r |
961 | IN CHAR8 *SupportedLang,\r | |
962 | IN UINTN Index,\r | |
963 | IN BOOLEAN Iso639Language\r | |
964 | )\r | |
965 | {\r | |
966 | UINTN SubIndex;\r | |
255a3f33 | 967 | UINTN CompareLength;\r |
72399dae | 968 | CHAR8 *Supported;\r |
8d3a5c82 | 969 | \r |
72399dae | 970 | SubIndex = 0;\r |
971 | Supported = SupportedLang;\r | |
972 | if (Iso639Language) {\r | |
973 | //\r | |
8a2d4996 | 974 | // According to the index of Lang string in SupportedLang string to get the language.\r |
975 | // This code will be invoked in RUNTIME, therefore there is not a memory allocate/free operation.\r | |
72399dae | 976 | // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r |
977 | //\r | |
255a3f33 RN |
978 | CompareLength = ISO_639_2_ENTRY_SIZE;\r |
979 | mVariableModuleGlobal->Lang[CompareLength] = '\0';\r | |
72399dae | 980 | return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index * CompareLength, CompareLength);\r |
f68af18e | 981 | \r |
8d3a5c82 | 982 | } else {\r |
72399dae | 983 | while (TRUE) {\r |
984 | //\r | |
8a2d4996 | 985 | // Take semicolon as delimitation, sequentially traverse supported language codes.\r |
72399dae | 986 | //\r |
987 | for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {\r | |
988 | Supported++;\r | |
989 | }\r | |
990 | if ((*Supported == '\0') && (SubIndex != Index)) {\r | |
991 | //\r | |
992 | // Have completed the traverse, but not find corrsponding string.\r | |
993 | // This case is not allowed to happen.\r | |
994 | //\r | |
995 | ASSERT(FALSE);\r | |
996 | return NULL;\r | |
997 | }\r | |
998 | if (SubIndex == Index) {\r | |
999 | //\r | |
8a2d4996 | 1000 | // According to the index of Lang string in SupportedLang string to get the language.\r |
72399dae | 1001 | // As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.\r |
1002 | // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r | |
1003 | //\r | |
255a3f33 | 1004 | mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';\r |
72399dae | 1005 | return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);\r |
1006 | }\r | |
1007 | SubIndex++;\r | |
8a2d4996 | 1008 | \r |
5c033766 RN |
1009 | //\r |
1010 | // Skip ';' characters in Supported\r | |
1011 | //\r | |
1012 | for (; *Supported != '\0' && *Supported == ';'; Supported++);\r | |
72399dae | 1013 | }\r |
8d3a5c82 | 1014 | }\r |
8d3a5c82 | 1015 | }\r |
1016 | \r | |
255a3f33 RN |
1017 | /**\r |
1018 | Returns a pointer to an allocated buffer that contains the best matching language \r | |
1019 | from a set of supported languages. \r | |
1020 | \r | |
1021 | This function supports both ISO 639-2 and RFC 4646 language codes, but language \r | |
1022 | code types may not be mixed in a single call to this function. This function\r | |
1023 | supports a variable argument list that allows the caller to pass in a prioritized\r | |
1024 | list of language codes to test against all the language codes in SupportedLanguages.\r | |
1025 | \r | |
1026 | If SupportedLanguages is NULL, then ASSERT().\r | |
1027 | \r | |
1028 | @param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that\r | |
1029 | contains a set of language codes in the format \r | |
1030 | specified by Iso639Language.\r | |
1031 | @param[in] Iso639Language If TRUE, then all language codes are assumed to be\r | |
1032 | in ISO 639-2 format. If FALSE, then all language\r | |
1033 | codes are assumed to be in RFC 4646 language format\r | |
1034 | @param[in] ... A variable argument list that contains pointers to \r | |
1035 | Null-terminated ASCII strings that contain one or more\r | |
1036 | language codes in the format specified by Iso639Language.\r | |
1037 | The first language code from each of these language\r | |
1038 | code lists is used to determine if it is an exact or\r | |
1039 | close match to any of the language codes in \r | |
1040 | SupportedLanguages. Close matches only apply to RFC 4646\r | |
1041 | language codes, and the matching algorithm from RFC 4647\r | |
1042 | is used to determine if a close match is present. If \r | |
1043 | an exact or close match is found, then the matching\r | |
1044 | language code from SupportedLanguages is returned. If\r | |
1045 | no matches are found, then the next variable argument\r | |
1046 | parameter is evaluated. The variable argument list \r | |
1047 | is terminated by a NULL.\r | |
1048 | \r | |
1049 | @retval NULL The best matching language could not be found in SupportedLanguages.\r | |
1050 | @retval NULL There are not enough resources available to return the best matching \r | |
1051 | language.\r | |
1052 | @retval Other A pointer to a Null-terminated ASCII string that is the best matching \r | |
1053 | language in SupportedLanguages.\r | |
1054 | \r | |
1055 | **/\r | |
1056 | CHAR8 *\r | |
e1adae60 | 1057 | EFIAPI\r |
255a3f33 RN |
1058 | VariableGetBestLanguage (\r |
1059 | IN CONST CHAR8 *SupportedLanguages, \r | |
1060 | IN BOOLEAN Iso639Language,\r | |
1061 | ...\r | |
1062 | )\r | |
1063 | {\r | |
1064 | VA_LIST Args;\r | |
1065 | CHAR8 *Language;\r | |
1066 | UINTN CompareLength;\r | |
1067 | UINTN LanguageLength;\r | |
1068 | CONST CHAR8 *Supported;\r | |
1069 | CHAR8 *Buffer;\r | |
1070 | \r | |
1071 | ASSERT (SupportedLanguages != NULL);\r | |
1072 | \r | |
1073 | VA_START (Args, Iso639Language);\r | |
1074 | while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {\r | |
1075 | //\r | |
1076 | // Default to ISO 639-2 mode\r | |
1077 | //\r | |
1078 | CompareLength = 3;\r | |
1079 | LanguageLength = MIN (3, AsciiStrLen (Language));\r | |
1080 | \r | |
1081 | //\r | |
1082 | // If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language\r | |
1083 | //\r | |
1084 | if (!Iso639Language) {\r | |
1085 | for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);\r | |
1086 | }\r | |
1087 | \r | |
1088 | //\r | |
1089 | // Trim back the length of Language used until it is empty\r | |
1090 | //\r | |
1091 | while (LanguageLength > 0) {\r | |
1092 | //\r | |
1093 | // Loop through all language codes in SupportedLanguages\r | |
1094 | //\r | |
1095 | for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {\r | |
1096 | //\r | |
1097 | // In RFC 4646 mode, then Loop through all language codes in SupportedLanguages\r | |
1098 | //\r | |
1099 | if (!Iso639Language) {\r | |
1100 | //\r | |
1101 | // Skip ';' characters in Supported\r | |
1102 | //\r | |
1103 | for (; *Supported != '\0' && *Supported == ';'; Supported++);\r | |
1104 | //\r | |
1105 | // Determine the length of the next language code in Supported\r | |
1106 | //\r | |
1107 | for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);\r | |
1108 | //\r | |
1109 | // If Language is longer than the Supported, then skip to the next language\r | |
1110 | //\r | |
1111 | if (LanguageLength > CompareLength) {\r | |
1112 | continue;\r | |
1113 | }\r | |
1114 | }\r | |
1115 | //\r | |
1116 | // See if the first LanguageLength characters in Supported match Language\r | |
1117 | //\r | |
1118 | if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {\r | |
1119 | VA_END (Args);\r | |
1120 | \r | |
1121 | Buffer = Iso639Language ? mVariableModuleGlobal->Lang : mVariableModuleGlobal->PlatformLang;\r | |
1122 | Buffer[CompareLength] = '\0';\r | |
1123 | return CopyMem (Buffer, Supported, CompareLength);\r | |
1124 | }\r | |
1125 | }\r | |
1126 | \r | |
1127 | if (Iso639Language) {\r | |
1128 | //\r | |
1129 | // If ISO 639 mode, then each language can only be tested once\r | |
1130 | //\r | |
1131 | LanguageLength = 0;\r | |
1132 | } else {\r | |
1133 | //\r | |
1134 | // If RFC 4646 mode, then trim Language from the right to the next '-' character \r | |
1135 | //\r | |
1136 | for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);\r | |
1137 | }\r | |
1138 | }\r | |
1139 | }\r | |
1140 | VA_END (Args);\r | |
1141 | \r | |
1142 | //\r | |
1143 | // No matches were found \r | |
1144 | //\r | |
1145 | return NULL;\r | |
1146 | }\r | |
1147 | \r | |
72399dae | 1148 | /**\r |
1149 | Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.\r | |
052ad7e1 | 1150 | \r |
72399dae | 1151 | When setting Lang/LangCodes, simultaneously update PlatformLang/PlatformLangCodes.\r |
052ad7e1 | 1152 | \r |
72399dae | 1153 | According to UEFI spec, PlatformLangCodes/LangCodes are only set once in firmware initialization,\r |
1154 | and are read-only. Therefore, in variable driver, only store the original value for other use.\r | |
8d3a5c82 | 1155 | \r |
8a2d4996 | 1156 | @param[in] VariableName Name of variable.\r |
8d3a5c82 | 1157 | \r |
8a2d4996 | 1158 | @param[in] Data Variable data.\r |
8d3a5c82 | 1159 | \r |
8a2d4996 | 1160 | @param[in] DataSize Size of data. 0 means delete.\r |
72399dae | 1161 | \r |
7c80e839 | 1162 | **/\r |
255a3f33 | 1163 | VOID\r |
d6550260 | 1164 | AutoUpdateLangVariable (\r |
72399dae | 1165 | IN CHAR16 *VariableName,\r |
1166 | IN VOID *Data,\r | |
1167 | IN UINTN DataSize\r | |
052ad7e1 | 1168 | )\r |
8d3a5c82 | 1169 | {\r |
255a3f33 RN |
1170 | EFI_STATUS Status;\r |
1171 | CHAR8 *BestPlatformLang;\r | |
1172 | CHAR8 *BestLang;\r | |
1173 | UINTN Index;\r | |
1174 | UINT32 Attributes;\r | |
72399dae | 1175 | VARIABLE_POINTER_TRACK Variable;\r |
255a3f33 | 1176 | BOOLEAN SetLanguageCodes;\r |
8d3a5c82 | 1177 | \r |
72399dae | 1178 | //\r |
255a3f33 | 1179 | // Don't do updates for delete operation\r |
72399dae | 1180 | //\r |
255a3f33 RN |
1181 | if (DataSize == 0) {\r |
1182 | return;\r | |
1183 | }\r | |
1184 | \r | |
1185 | SetLanguageCodes = FALSE;\r | |
8d3a5c82 | 1186 | \r |
72399dae | 1187 | if (StrCmp (VariableName, L"PlatformLangCodes") == 0) {\r |
255a3f33 RN |
1188 | //\r |
1189 | // PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r | |
1190 | //\r | |
8a2d4996 | 1191 | if (AtRuntime ()) {\r |
255a3f33 RN |
1192 | return;\r |
1193 | }\r | |
1194 | \r | |
1195 | SetLanguageCodes = TRUE;\r | |
1196 | \r | |
72399dae | 1197 | //\r |
1198 | // According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only\r | |
1199 | // Therefore, in variable driver, only store the original value for other use.\r | |
1200 | //\r | |
255a3f33 RN |
1201 | if (mVariableModuleGlobal->PlatformLangCodes != NULL) {\r |
1202 | FreePool (mVariableModuleGlobal->PlatformLangCodes);\r | |
1203 | }\r | |
1204 | mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r | |
1205 | ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);\r | |
1206 | \r | |
72399dae | 1207 | //\r |
255a3f33 RN |
1208 | // PlatformLang holds a single language from PlatformLangCodes, \r |
1209 | // so the size of PlatformLangCodes is enough for the PlatformLang.\r | |
72399dae | 1210 | //\r |
255a3f33 RN |
1211 | if (mVariableModuleGlobal->PlatformLang != NULL) {\r |
1212 | FreePool (mVariableModuleGlobal->PlatformLang);\r | |
1213 | }\r | |
1214 | mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);\r | |
1215 | ASSERT (mVariableModuleGlobal->PlatformLang != NULL);\r | |
fdb7765f | 1216 | \r |
255a3f33 | 1217 | } else if (StrCmp (VariableName, L"LangCodes") == 0) {\r |
72399dae | 1218 | //\r |
255a3f33 | 1219 | // LangCodes is a volatile variable, so it can not be updated at runtime.\r |
72399dae | 1220 | //\r |
8a2d4996 | 1221 | if (AtRuntime ()) {\r |
255a3f33 RN |
1222 | return;\r |
1223 | }\r | |
1224 | \r | |
1225 | SetLanguageCodes = TRUE;\r | |
8d3a5c82 | 1226 | \r |
8d3a5c82 | 1227 | //\r |
255a3f33 RN |
1228 | // According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only\r |
1229 | // Therefore, in variable driver, only store the original value for other use.\r | |
8d3a5c82 | 1230 | //\r |
255a3f33 RN |
1231 | if (mVariableModuleGlobal->LangCodes != NULL) {\r |
1232 | FreePool (mVariableModuleGlobal->LangCodes);\r | |
1233 | }\r | |
1234 | mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r | |
1235 | ASSERT (mVariableModuleGlobal->LangCodes != NULL);\r | |
1236 | }\r | |
8d3a5c82 | 1237 | \r |
255a3f33 RN |
1238 | if (SetLanguageCodes \r |
1239 | && (mVariableModuleGlobal->PlatformLangCodes != NULL)\r | |
1240 | && (mVariableModuleGlobal->LangCodes != NULL)) {\r | |
8d3a5c82 | 1241 | //\r |
255a3f33 RN |
1242 | // Update Lang if PlatformLang is already set\r |
1243 | // Update PlatformLang if Lang is already set\r | |
8d3a5c82 | 1244 | //\r |
9622df63 | 1245 | Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
255a3f33 RN |
1246 | if (!EFI_ERROR (Status)) {\r |
1247 | //\r | |
1248 | // Update Lang\r | |
1249 | //\r | |
1250 | VariableName = L"PlatformLang";\r | |
1251 | Data = GetVariableDataPtr (Variable.CurrPtr);\r | |
1252 | DataSize = Variable.CurrPtr->DataSize;\r | |
1253 | } else {\r | |
9622df63 | 1254 | Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
255a3f33 RN |
1255 | if (!EFI_ERROR (Status)) {\r |
1256 | //\r | |
1257 | // Update PlatformLang\r | |
1258 | //\r | |
1259 | VariableName = L"Lang";\r | |
1260 | Data = GetVariableDataPtr (Variable.CurrPtr);\r | |
1261 | DataSize = Variable.CurrPtr->DataSize;\r | |
1262 | } else {\r | |
1263 | //\r | |
1264 | // Neither PlatformLang nor Lang is set, directly return\r | |
1265 | //\r | |
1266 | return;\r | |
1267 | }\r | |
1268 | }\r | |
1269 | }\r | |
1270 | \r | |
1271 | //\r | |
1272 | // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.\r | |
1273 | //\r | |
1274 | Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r | |
8d3a5c82 | 1275 | \r |
255a3f33 | 1276 | if (StrCmp (VariableName, L"PlatformLang") == 0) {\r |
8d3a5c82 | 1277 | //\r |
255a3f33 | 1278 | // Update Lang when PlatformLangCodes/LangCodes were set.\r |
8d3a5c82 | 1279 | //\r |
255a3f33 RN |
1280 | if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r |
1281 | //\r | |
1282 | // When setting PlatformLang, firstly get most matched language string from supported language codes.\r | |
1283 | //\r | |
1284 | BestPlatformLang = VariableGetBestLanguage (mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);\r | |
1285 | if (BestPlatformLang != NULL) {\r | |
1286 | //\r | |
1287 | // Get the corresponding index in language codes.\r | |
1288 | //\r | |
1289 | Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, BestPlatformLang, FALSE);\r | |
fdb7765f | 1290 | \r |
255a3f33 RN |
1291 | //\r |
1292 | // Get the corresponding ISO639 language tag according to RFC4646 language tag.\r | |
1293 | //\r | |
1294 | BestLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, Index, TRUE);\r | |
8d3a5c82 | 1295 | \r |
255a3f33 RN |
1296 | //\r |
1297 | // Successfully convert PlatformLang to Lang, and set the BestLang value into Lang variable simultaneously.\r | |
1298 | //\r | |
9622df63 | 1299 | FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal, FALSE);\r |
8d3a5c82 | 1300 | \r |
8a2d4996 | 1301 | Status = UpdateVariable (L"Lang", &gEfiGlobalVariableGuid, BestLang,\r |
1302 | ISO_639_2_ENTRY_SIZE + 1, Attributes, &Variable);\r | |
8d3a5c82 | 1303 | \r |
255a3f33 | 1304 | DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a\n", BestPlatformLang, BestLang));\r |
72399dae | 1305 | \r |
255a3f33 RN |
1306 | ASSERT_EFI_ERROR(Status);\r |
1307 | }\r | |
1308 | }\r | |
72399dae | 1309 | \r |
255a3f33 | 1310 | } else if (StrCmp (VariableName, L"Lang") == 0) {\r |
72399dae | 1311 | //\r |
255a3f33 | 1312 | // Update PlatformLang when PlatformLangCodes/LangCodes were set.\r |
72399dae | 1313 | //\r |
255a3f33 RN |
1314 | if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r |
1315 | //\r | |
1316 | // When setting Lang, firstly get most matched language string from supported language codes.\r | |
1317 | //\r | |
1318 | BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);\r | |
1319 | if (BestLang != NULL) {\r | |
1320 | //\r | |
1321 | // Get the corresponding index in language codes.\r | |
1322 | //\r | |
1323 | Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, BestLang, TRUE);\r | |
72399dae | 1324 | \r |
255a3f33 RN |
1325 | //\r |
1326 | // Get the corresponding RFC4646 language tag according to ISO639 language tag.\r | |
1327 | //\r | |
1328 | BestPlatformLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, Index, FALSE);\r | |
1329 | \r | |
1330 | //\r | |
1331 | // Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.\r | |
1332 | //\r | |
9622df63 | 1333 | FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
72399dae | 1334 | \r |
255a3f33 RN |
1335 | Status = UpdateVariable (L"PlatformLang", &gEfiGlobalVariableGuid, BestPlatformLang, \r |
1336 | AsciiStrSize (BestPlatformLang), Attributes, &Variable);\r | |
72399dae | 1337 | \r |
255a3f33 RN |
1338 | DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a\n", BestLang, BestPlatformLang));\r |
1339 | ASSERT_EFI_ERROR (Status);\r | |
1340 | }\r | |
1341 | }\r | |
72399dae | 1342 | }\r |
8d3a5c82 | 1343 | }\r |
1344 | \r | |
7c80e839 | 1345 | /**\r |
72399dae | 1346 | Update the variable region with Variable information. These are the same \r |
1347 | arguments as the EFI Variable services.\r | |
052ad7e1 | 1348 | \r |
8a2d4996 | 1349 | @param[in] VariableName Name of variable.\r |
1350 | @param[in] VendorGuid Guid of variable.\r | |
1351 | @param[in] Data Variable data.\r | |
1352 | @param[in] DataSize Size of data. 0 means delete.\r | |
1353 | @param[in] Attributes Attribues of the variable.\r | |
1354 | @param[in] CacheVariable The variable information which is used to keep track of variable usage.\r | |
1355 | \r | |
72399dae | 1356 | @retval EFI_SUCCESS The update operation is success.\r |
72399dae | 1357 | @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other data into this region.\r |
8d3a5c82 | 1358 | \r |
7c80e839 | 1359 | **/\r |
052ad7e1 | 1360 | EFI_STATUS\r |
72399dae | 1361 | UpdateVariable (\r |
8a2d4996 | 1362 | IN CHAR16 *VariableName,\r |
1363 | IN EFI_GUID *VendorGuid,\r | |
1364 | IN VOID *Data,\r | |
1365 | IN UINTN DataSize,\r | |
1366 | IN UINT32 Attributes OPTIONAL,\r | |
1367 | IN VARIABLE_POINTER_TRACK *CacheVariable\r | |
052ad7e1 | 1368 | )\r |
8d3a5c82 | 1369 | {\r |
8a9e0b72 | 1370 | EFI_STATUS Status;\r |
1371 | VARIABLE_HEADER *NextVariable;\r | |
72399dae | 1372 | UINTN ScratchSize;\r |
1373 | UINTN NonVolatileVarableStoreSize;\r | |
8a9e0b72 | 1374 | UINTN VarNameOffset;\r |
1375 | UINTN VarDataOffset;\r | |
72399dae | 1376 | UINTN VarNameSize;\r |
8a9e0b72 | 1377 | UINTN VarSize;\r |
72399dae | 1378 | BOOLEAN Volatile;\r |
1379 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
8a9e0b72 | 1380 | UINT8 State;\r |
1381 | BOOLEAN Reclaimed;\r | |
8a2d4996 | 1382 | VARIABLE_POINTER_TRACK *Variable;\r |
1383 | VARIABLE_POINTER_TRACK NvVariable;\r | |
1384 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
1385 | UINTN CacheOffset;\r | |
fdb7765f | 1386 | \r |
5456306f | 1387 | if ((mVariableModuleGlobal->FvbInstance == NULL) && ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0)) {\r |
1388 | //\r | |
1389 | // The FVB protocol is not ready. Trying to update NV variable prior to the installation\r | |
1390 | // of EFI_VARIABLE_WRITE_ARCH_PROTOCOL.\r | |
1391 | //\r | |
1392 | return EFI_NOT_AVAILABLE_YET; \r | |
1393 | }\r | |
1394 | \r | |
1395 | if ((CacheVariable->CurrPtr == NULL) || CacheVariable->Volatile) {\r | |
8a2d4996 | 1396 | Variable = CacheVariable;\r |
1397 | } else {\r | |
8a2d4996 | 1398 | //\r |
5456306f | 1399 | // Update/Delete existing NV variable.\r |
8a2d4996 | 1400 | // CacheVariable points to the variable in the memory copy of Flash area\r |
1401 | // Now let Variable points to the same variable in Flash area.\r | |
1402 | //\r | |
1403 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r | |
1404 | Variable = &NvVariable; \r | |
1405 | Variable->StartPtr = GetStartPointer (VariableStoreHeader);\r | |
1406 | Variable->EndPtr = GetEndPointer (VariableStoreHeader);\r | |
5456306f | 1407 | Variable->CurrPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->CurrPtr - (UINTN)CacheVariable->StartPtr));\r |
1408 | Variable->Volatile = FALSE;\r | |
1409 | } \r | |
1410 | \r | |
1411 | Fvb = mVariableModuleGlobal->FvbInstance;\r | |
1412 | Reclaimed = FALSE;\r | |
fdb7765f | 1413 | \r |
72399dae | 1414 | if (Variable->CurrPtr != NULL) {\r |
8d3a5c82 | 1415 | //\r |
8a2d4996 | 1416 | // Update/Delete existing variable.\r |
8d3a5c82 | 1417 | //\r |
8a2d4996 | 1418 | if (AtRuntime ()) { \r |
c6492839 | 1419 | //\r |
8a2d4996 | 1420 | // If AtRuntime and the variable is Volatile and Runtime Access, \r |
c6492839 | 1421 | // the volatile is ReadOnly, and SetVariable should be aborted and \r |
1422 | // return EFI_WRITE_PROTECTED.\r | |
1423 | //\r | |
72399dae | 1424 | if (Variable->Volatile) {\r |
c6492839 | 1425 | Status = EFI_WRITE_PROTECTED;\r |
1426 | goto Done;\r | |
1427 | }\r | |
1428 | //\r | |
9622df63 | 1429 | // Only variable that have NV|RT attributes can be updated/deleted in Runtime.\r |
c6492839 | 1430 | //\r |
9622df63 | 1431 | if (((Variable->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Variable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0)) {\r |
c6492839 | 1432 | Status = EFI_INVALID_PARAMETER;\r |
1433 | goto Done; \r | |
1434 | }\r | |
1435 | }\r | |
8a2d4996 | 1436 | \r |
8d3a5c82 | 1437 | //\r |
c6492839 | 1438 | // Setting a data variable with no access, or zero DataSize attributes\r |
8a2d4996 | 1439 | // causes it to be deleted.\r |
8d3a5c82 | 1440 | //\r |
c6492839 | 1441 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) { \r |
72399dae | 1442 | State = Variable->CurrPtr->State;\r |
c6492839 | 1443 | State &= VAR_DELETED;\r |
1444 | \r | |
1445 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1446 | &mVariableModuleGlobal->VariableGlobal,\r |
72399dae | 1447 | Variable->Volatile,\r |
c6492839 | 1448 | FALSE,\r |
8a9e0b72 | 1449 | Fvb,\r |
72399dae | 1450 | (UINTN) &Variable->CurrPtr->State,\r |
c6492839 | 1451 | sizeof (UINT8),\r |
1452 | &State\r | |
1453 | ); \r | |
33a5a666 | 1454 | if (!EFI_ERROR (Status)) {\r |
8a2d4996 | 1455 | UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, FALSE, TRUE, FALSE);\r |
1456 | if (!Variable->Volatile) {\r | |
1457 | CacheVariable->CurrPtr->State = State;\r | |
1458 | }\r | |
33a5a666 | 1459 | }\r |
c6492839 | 1460 | goto Done; \r |
1461 | }\r | |
8d3a5c82 | 1462 | //\r |
8a2d4996 | 1463 | // If the variable is marked valid, and the same data has been passed in,\r |
c6492839 | 1464 | // then return to the caller immediately.\r |
8d3a5c82 | 1465 | //\r |
72399dae | 1466 | if (DataSizeOfVariable (Variable->CurrPtr) == DataSize &&\r |
1467 | (CompareMem (Data, GetVariableDataPtr (Variable->CurrPtr), DataSize) == 0)) {\r | |
33a5a666 | 1468 | \r |
8a2d4996 | 1469 | UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);\r |
c6492839 | 1470 | Status = EFI_SUCCESS;\r |
1471 | goto Done;\r | |
72399dae | 1472 | } else if ((Variable->CurrPtr->State == VAR_ADDED) ||\r |
1473 | (Variable->CurrPtr->State == (VAR_ADDED & VAR_IN_DELETED_TRANSITION))) {\r | |
814bae52 | 1474 | \r |
c6492839 | 1475 | //\r |
8a2d4996 | 1476 | // Mark the old variable as in delete transition.\r |
c6492839 | 1477 | //\r |
72399dae | 1478 | State = Variable->CurrPtr->State;\r |
c6492839 | 1479 | State &= VAR_IN_DELETED_TRANSITION;\r |
1480 | \r | |
1481 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1482 | &mVariableModuleGlobal->VariableGlobal,\r |
72399dae | 1483 | Variable->Volatile,\r |
c6492839 | 1484 | FALSE,\r |
8a9e0b72 | 1485 | Fvb,\r |
72399dae | 1486 | (UINTN) &Variable->CurrPtr->State,\r |
c6492839 | 1487 | sizeof (UINT8),\r |
1488 | &State\r | |
1489 | ); \r | |
1490 | if (EFI_ERROR (Status)) {\r | |
1491 | goto Done; \r | |
33a5a666 | 1492 | } \r |
8a2d4996 | 1493 | if (!Variable->Volatile) {\r |
1494 | CacheVariable->CurrPtr->State = State;\r | |
1495 | }\r | |
c6492839 | 1496 | } \r |
72399dae | 1497 | } else {\r |
8d3a5c82 | 1498 | //\r |
8a2d4996 | 1499 | // Not found existing variable. Create a new variable.\r |
c6492839 | 1500 | // \r |
1501 | \r | |
8d3a5c82 | 1502 | //\r |
c6492839 | 1503 | // Make sure we are trying to create a new variable.\r |
8a2d4996 | 1504 | // Setting a data variable with zero DataSize or no access attributes means to delete it. \r |
8d3a5c82 | 1505 | //\r |
c6492839 | 1506 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r |
1507 | Status = EFI_NOT_FOUND;\r | |
1508 | goto Done;\r | |
1509 | }\r | |
1510 | \r | |
8d3a5c82 | 1511 | //\r |
8a2d4996 | 1512 | // Only variable have NV|RT attribute can be created in Runtime.\r |
c6492839 | 1513 | //\r |
8a2d4996 | 1514 | if (AtRuntime () &&\r |
45f6c85b | 1515 | (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r |
c6492839 | 1516 | Status = EFI_INVALID_PARAMETER;\r |
1517 | goto Done;\r | |
1518 | } \r | |
c6492839 | 1519 | }\r |
1520 | \r | |
1521 | //\r | |
1522 | // Function part - create a new variable and copy the data.\r | |
1523 | // Both update a variable and create a variable will come here.\r | |
8a2d4996 | 1524 | \r |
c6492839 | 1525 | //\r |
1526 | // Tricky part: Use scratch data area at the end of volatile variable store\r | |
1527 | // as a temporary storage.\r | |
1528 | //\r | |
052ad7e1 | 1529 | NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));\r |
188e4e84 | 1530 | ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32 (PcdMaxHardwareErrorVariableSize));\r |
c6492839 | 1531 | \r |
2fcdca1d | 1532 | SetMem (NextVariable, ScratchSize, 0xff);\r |
c6492839 | 1533 | \r |
1534 | NextVariable->StartId = VARIABLE_DATA;\r | |
1535 | NextVariable->Attributes = Attributes;\r | |
1536 | //\r | |
1537 | // NextVariable->State = VAR_ADDED;\r | |
1538 | //\r | |
8a2d4996 | 1539 | NextVariable->Reserved = 0;\r |
1540 | VarNameOffset = sizeof (VARIABLE_HEADER);\r | |
1541 | VarNameSize = StrSize (VariableName);\r | |
c6492839 | 1542 | CopyMem (\r |
1543 | (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r | |
1544 | VariableName,\r | |
1545 | VarNameSize\r | |
1546 | );\r | |
1547 | VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r | |
1548 | CopyMem (\r | |
1549 | (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r | |
1550 | Data,\r | |
1551 | DataSize\r | |
1552 | );\r | |
1553 | CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));\r | |
1554 | //\r | |
1555 | // There will be pad bytes after Data, the NextVariable->NameSize and\r | |
1556 | // NextVariable->DataSize should not include pad size so that variable\r | |
8a2d4996 | 1557 | // service can get actual size in GetVariable.\r |
c6492839 | 1558 | //\r |
1559 | NextVariable->NameSize = (UINT32)VarNameSize;\r | |
1560 | NextVariable->DataSize = (UINT32)DataSize;\r | |
1561 | \r | |
1562 | //\r | |
1563 | // The actual size of the variable that stores in storage should\r | |
1564 | // include pad size.\r | |
1565 | //\r | |
1566 | VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r | |
45f6c85b | 1567 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
8d3a5c82 | 1568 | //\r |
8a2d4996 | 1569 | // Create a nonvolatile variable.\r |
8d3a5c82 | 1570 | //\r |
fd51bf70 | 1571 | Volatile = FALSE;\r |
2fcdca1d | 1572 | NonVolatileVarableStoreSize = ((VARIABLE_STORE_HEADER *)(UINTN)(mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase))->Size;\r |
1573 | if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) \r | |
188e4e84 | 1574 | && ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r |
2fcdca1d | 1575 | || (((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0) \r |
188e4e84 | 1576 | && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > NonVolatileVarableStoreSize - sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize)))) {\r |
8a2d4996 | 1577 | if (AtRuntime ()) {\r |
c6492839 | 1578 | Status = EFI_OUT_OF_RESOURCES;\r |
1579 | goto Done;\r | |
1580 | }\r | |
1581 | //\r | |
8a2d4996 | 1582 | // Perform garbage collection & reclaim operation.\r |
c6492839 | 1583 | //\r |
72399dae | 1584 | Status = Reclaim (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase, \r |
1585 | &mVariableModuleGlobal->NonVolatileLastVariableOffset, FALSE, Variable->CurrPtr);\r | |
8d3a5c82 | 1586 | if (EFI_ERROR (Status)) {\r |
1587 | goto Done;\r | |
1588 | }\r | |
8d3a5c82 | 1589 | //\r |
8a2d4996 | 1590 | // If still no enough space, return out of resources.\r |
8d3a5c82 | 1591 | //\r |
2fcdca1d | 1592 | if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) \r |
188e4e84 | 1593 | && ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r |
2fcdca1d | 1594 | || (((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0) \r |
188e4e84 | 1595 | && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > NonVolatileVarableStoreSize - sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize)))) {\r |
c6492839 | 1596 | Status = EFI_OUT_OF_RESOURCES;\r |
8d3a5c82 | 1597 | goto Done;\r |
8d3a5c82 | 1598 | }\r |
c6492839 | 1599 | Reclaimed = TRUE;\r |
8d3a5c82 | 1600 | }\r |
1601 | //\r | |
8a2d4996 | 1602 | // Four steps\r |
c6492839 | 1603 | // 1. Write variable header\r |
130e2569 | 1604 | // 2. Set variable state to header valid \r |
1605 | // 3. Write variable data\r | |
1606 | // 4. Set variable state to valid\r | |
8d3a5c82 | 1607 | //\r |
8d3a5c82 | 1608 | //\r |
c6492839 | 1609 | // Step 1:\r |
8d3a5c82 | 1610 | //\r |
8a2d4996 | 1611 | CacheOffset = mVariableModuleGlobal->NonVolatileLastVariableOffset;\r |
c6492839 | 1612 | Status = UpdateVariableStore (\r |
052ad7e1 | 1613 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1614 | FALSE,\r |
1615 | TRUE,\r | |
8a9e0b72 | 1616 | Fvb,\r |
72399dae | 1617 | mVariableModuleGlobal->NonVolatileLastVariableOffset,\r |
c6492839 | 1618 | sizeof (VARIABLE_HEADER),\r |
1619 | (UINT8 *) NextVariable\r | |
1620 | );\r | |
1621 | \r | |
1622 | if (EFI_ERROR (Status)) {\r | |
1623 | goto Done;\r | |
1624 | }\r | |
130e2569 | 1625 | \r |
8d3a5c82 | 1626 | //\r |
c6492839 | 1627 | // Step 2:\r |
8d3a5c82 | 1628 | //\r |
130e2569 | 1629 | NextVariable->State = VAR_HEADER_VALID_ONLY;\r |
1630 | Status = UpdateVariableStore (\r | |
1631 | &mVariableModuleGlobal->VariableGlobal,\r | |
1632 | FALSE,\r | |
1633 | TRUE,\r | |
8a9e0b72 | 1634 | Fvb,\r |
8a2d4996 | 1635 | mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r |
1636 | sizeof (UINT8),\r | |
1637 | &NextVariable->State\r | |
130e2569 | 1638 | );\r |
1639 | \r | |
1640 | if (EFI_ERROR (Status)) {\r | |
1641 | goto Done;\r | |
1642 | }\r | |
1643 | //\r | |
1644 | // Step 3:\r | |
1645 | //\r | |
c6492839 | 1646 | Status = UpdateVariableStore (\r |
052ad7e1 | 1647 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1648 | FALSE,\r |
1649 | TRUE,\r | |
8a9e0b72 | 1650 | Fvb,\r |
72399dae | 1651 | mVariableModuleGlobal->NonVolatileLastVariableOffset + sizeof (VARIABLE_HEADER),\r |
c6492839 | 1652 | (UINT32) VarSize - sizeof (VARIABLE_HEADER),\r |
1653 | (UINT8 *) NextVariable + sizeof (VARIABLE_HEADER)\r | |
1654 | );\r | |
1655 | \r | |
1656 | if (EFI_ERROR (Status)) {\r | |
1657 | goto Done;\r | |
1658 | }\r | |
8d3a5c82 | 1659 | //\r |
130e2569 | 1660 | // Step 4:\r |
8d3a5c82 | 1661 | //\r |
c6492839 | 1662 | NextVariable->State = VAR_ADDED;\r |
1663 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1664 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1665 | FALSE,\r |
1666 | TRUE,\r | |
8a9e0b72 | 1667 | Fvb,\r |
8a2d4996 | 1668 | mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r |
1669 | sizeof (UINT8),\r | |
1670 | &NextVariable->State\r | |
c6492839 | 1671 | );\r |
1672 | \r | |
1673 | if (EFI_ERROR (Status)) {\r | |
1674 | goto Done;\r | |
1675 | }\r | |
8d3a5c82 | 1676 | \r |
72399dae | 1677 | mVariableModuleGlobal->NonVolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r |
8d3a5c82 | 1678 | \r |
2fcdca1d | 1679 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r |
1680 | mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
1681 | } else {\r | |
1682 | mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
1683 | }\r | |
8a2d4996 | 1684 | //\r |
1685 | // update the memory copy of Flash region.\r | |
1686 | //\r | |
1687 | CopyMem ((UINT8 *)mNvVariableCache + CacheOffset, (UINT8 *)NextVariable, VarSize);\r | |
c6492839 | 1688 | } else {\r |
1689 | //\r | |
8a2d4996 | 1690 | // Create a volatile variable.\r |
c6492839 | 1691 | // \r |
fd51bf70 | 1692 | Volatile = TRUE;\r |
c6492839 | 1693 | \r |
72399dae | 1694 | if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r |
052ad7e1 | 1695 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size) {\r |
8d3a5c82 | 1696 | //\r |
8a2d4996 | 1697 | // Perform garbage collection & reclaim operation.\r |
8d3a5c82 | 1698 | //\r |
72399dae | 1699 | Status = Reclaim (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase, \r |
1700 | &mVariableModuleGlobal->VolatileLastVariableOffset, TRUE, Variable->CurrPtr);\r | |
8d3a5c82 | 1701 | if (EFI_ERROR (Status)) {\r |
1702 | goto Done;\r | |
1703 | }\r | |
1704 | //\r | |
8a2d4996 | 1705 | // If still no enough space, return out of resources.\r |
8d3a5c82 | 1706 | //\r |
72399dae | 1707 | if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r |
052ad7e1 | 1708 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size\r |
8d3a5c82 | 1709 | ) {\r |
c6492839 | 1710 | Status = EFI_OUT_OF_RESOURCES;\r |
8d3a5c82 | 1711 | goto Done;\r |
1712 | }\r | |
c6492839 | 1713 | Reclaimed = TRUE;\r |
8d3a5c82 | 1714 | }\r |
8d3a5c82 | 1715 | \r |
c6492839 | 1716 | NextVariable->State = VAR_ADDED;\r |
1717 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1718 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 1719 | TRUE,\r |
1720 | TRUE,\r | |
8a9e0b72 | 1721 | Fvb,\r |
72399dae | 1722 | mVariableModuleGlobal->VolatileLastVariableOffset,\r |
c6492839 | 1723 | (UINT32) VarSize,\r |
1724 | (UINT8 *) NextVariable\r | |
1725 | );\r | |
1726 | \r | |
1727 | if (EFI_ERROR (Status)) {\r | |
1728 | goto Done;\r | |
8d3a5c82 | 1729 | }\r |
c6492839 | 1730 | \r |
72399dae | 1731 | mVariableModuleGlobal->VolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r |
c6492839 | 1732 | }\r |
72399dae | 1733 | \r |
c6492839 | 1734 | //\r |
8a2d4996 | 1735 | // Mark the old variable as deleted.\r |
c6492839 | 1736 | //\r |
72399dae | 1737 | if (!Reclaimed && !EFI_ERROR (Status) && Variable->CurrPtr != NULL) {\r |
1738 | State = Variable->CurrPtr->State;\r | |
c6492839 | 1739 | State &= VAR_DELETED;\r |
1740 | \r | |
1741 | Status = UpdateVariableStore (\r | |
72399dae | 1742 | &mVariableModuleGlobal->VariableGlobal,\r |
1743 | Variable->Volatile,\r | |
1744 | FALSE,\r | |
1745 | Fvb,\r | |
1746 | (UINTN) &Variable->CurrPtr->State,\r | |
1747 | sizeof (UINT8),\r | |
1748 | &State\r | |
1749 | );\r | |
8a2d4996 | 1750 | if (!EFI_ERROR (Status) && !Variable->Volatile) { \r |
1751 | CacheVariable->CurrPtr->State = State;\r | |
1752 | }\r | |
72399dae | 1753 | }\r |
1754 | \r | |
1755 | if (!EFI_ERROR (Status)) {\r | |
1756 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r | |
72399dae | 1757 | }\r |
1758 | \r | |
1759 | Done:\r | |
1760 | return Status;\r | |
1761 | }\r | |
1762 | \r | |
1763 | /**\r | |
1764 | \r | |
1765 | This code finds variable in storage blocks (Volatile or Non-Volatile).\r | |
1766 | \r | |
1767 | @param VariableName Name of Variable to be found.\r | |
1768 | @param VendorGuid Variable vendor GUID.\r | |
1769 | @param Attributes Attribute value of the variable found.\r | |
1770 | @param DataSize Size of Data found. If size is less than the\r | |
1771 | data, this value contains the required size.\r | |
1772 | @param Data Data pointer.\r | |
1773 | \r | |
8a2d4996 | 1774 | @return EFI_INVALID_PARAMETER Invalid parameter.\r |
1775 | @return EFI_SUCCESS Find the specified variable.\r | |
1776 | @return EFI_NOT_FOUND Not found.\r | |
1777 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r | |
72399dae | 1778 | \r |
1779 | **/\r | |
1780 | EFI_STATUS\r | |
1781 | EFIAPI\r | |
8a2d4996 | 1782 | VariableServiceGetVariable (\r |
72399dae | 1783 | IN CHAR16 *VariableName,\r |
1784 | IN EFI_GUID *VendorGuid,\r | |
1785 | OUT UINT32 *Attributes OPTIONAL,\r | |
1786 | IN OUT UINTN *DataSize,\r | |
1787 | OUT VOID *Data\r | |
1788 | )\r | |
1789 | {\r | |
1790 | EFI_STATUS Status;\r | |
1791 | VARIABLE_POINTER_TRACK Variable;\r | |
1792 | UINTN VarDataSize;\r | |
1793 | \r | |
1794 | if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r | |
1795 | return EFI_INVALID_PARAMETER;\r | |
1796 | }\r | |
1797 | \r | |
1798 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
72399dae | 1799 | \r |
9622df63 | 1800 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
72399dae | 1801 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r |
1802 | goto Done;\r | |
1803 | }\r | |
1804 | \r | |
1805 | //\r | |
1806 | // Get data size\r | |
1807 | //\r | |
1808 | VarDataSize = DataSizeOfVariable (Variable.CurrPtr);\r | |
1809 | ASSERT (VarDataSize != 0);\r | |
1810 | \r | |
1811 | if (*DataSize >= VarDataSize) {\r | |
1812 | if (Data == NULL) {\r | |
1813 | Status = EFI_INVALID_PARAMETER;\r | |
1814 | goto Done;\r | |
33a5a666 | 1815 | }\r |
72399dae | 1816 | \r |
1817 | CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r | |
1818 | if (Attributes != NULL) {\r | |
1819 | *Attributes = Variable.CurrPtr->Attributes;\r | |
1820 | }\r | |
1821 | \r | |
1822 | *DataSize = VarDataSize;\r | |
1823 | UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r | |
72399dae | 1824 | \r |
1825 | Status = EFI_SUCCESS;\r | |
1826 | goto Done;\r | |
1827 | } else {\r | |
1828 | *DataSize = VarDataSize;\r | |
1829 | Status = EFI_BUFFER_TOO_SMALL;\r | |
1830 | goto Done;\r | |
8d3a5c82 | 1831 | }\r |
1832 | \r | |
72399dae | 1833 | Done:\r |
1834 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
1835 | return Status;\r | |
1836 | }\r | |
1837 | \r | |
1838 | \r | |
1839 | \r | |
1840 | /**\r | |
1841 | \r | |
1842 | This code Finds the Next available variable.\r | |
1843 | \r | |
8a2d4996 | 1844 | @param VariableNameSize Size of the variable name.\r |
1845 | @param VariableName Pointer to variable name.\r | |
1846 | @param VendorGuid Variable Vendor Guid.\r | |
72399dae | 1847 | \r |
8a2d4996 | 1848 | @return EFI_INVALID_PARAMETER Invalid parameter.\r |
1849 | @return EFI_SUCCESS Find the specified variable.\r | |
1850 | @return EFI_NOT_FOUND Not found.\r | |
1851 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r | |
72399dae | 1852 | \r |
1853 | **/\r | |
1854 | EFI_STATUS\r | |
1855 | EFIAPI\r | |
8a2d4996 | 1856 | VariableServiceGetNextVariableName (\r |
72399dae | 1857 | IN OUT UINTN *VariableNameSize,\r |
1858 | IN OUT CHAR16 *VariableName,\r | |
1859 | IN OUT EFI_GUID *VendorGuid\r | |
1860 | )\r | |
1861 | {\r | |
0f7aff72 | 1862 | VARIABLE_STORE_TYPE Type;\r |
72399dae | 1863 | VARIABLE_POINTER_TRACK Variable;\r |
0f7aff72 | 1864 | VARIABLE_POINTER_TRACK VariableInHob;\r |
72399dae | 1865 | UINTN VarNameSize;\r |
1866 | EFI_STATUS Status;\r | |
0f7aff72 | 1867 | VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r |
72399dae | 1868 | \r |
1869 | if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r | |
1870 | return EFI_INVALID_PARAMETER;\r | |
1871 | }\r | |
1872 | \r | |
1873 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
1874 | \r | |
9622df63 | 1875 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
72399dae | 1876 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r |
1877 | goto Done;\r | |
1878 | }\r | |
1879 | \r | |
1880 | if (VariableName[0] != 0) {\r | |
1881 | //\r | |
8a2d4996 | 1882 | // If variable name is not NULL, get next variable.\r |
72399dae | 1883 | //\r |
1884 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
1885 | }\r | |
1886 | \r | |
0f7aff72 RN |
1887 | //\r |
1888 | // 0: Volatile, 1: HOB, 2: Non-Volatile.\r | |
1889 | // The index and attributes mapping must be kept in this order as FindVariable\r | |
1890 | // makes use of this mapping to implement search algorithm.\r | |
1891 | //\r | |
1892 | VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r | |
1893 | VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r | |
1894 | VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r | |
1895 | \r | |
72399dae | 1896 | while (TRUE) {\r |
1897 | //\r | |
0f7aff72 | 1898 | // Switch from Volatile to HOB, to Non-Volatile.\r |
72399dae | 1899 | //\r |
0f7aff72 RN |
1900 | while ((Variable.CurrPtr >= Variable.EndPtr) ||\r |
1901 | (Variable.CurrPtr == NULL) ||\r | |
1902 | !IsValidVariableHeader (Variable.CurrPtr)\r | |
1903 | ) {\r | |
1904 | //\r | |
1905 | // Find current storage index\r | |
1906 | //\r | |
1907 | for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r | |
1908 | if ((VariableStoreHeader[Type] != NULL) && (Variable.StartPtr == GetStartPointer (VariableStoreHeader[Type]))) {\r | |
1909 | break;\r | |
1910 | }\r | |
1911 | }\r | |
1912 | ASSERT (Type < VariableStoreTypeMax);\r | |
1913 | //\r | |
1914 | // Switch to next storage\r | |
1915 | //\r | |
1916 | for (Type++; Type < VariableStoreTypeMax; Type++) {\r | |
1917 | if (VariableStoreHeader[Type] != NULL) {\r | |
1918 | break;\r | |
1919 | }\r | |
1920 | }\r | |
1921 | //\r | |
1922 | // Capture the case that \r | |
1923 | // 1. current storage is the last one, or\r | |
1924 | // 2. no further storage\r | |
1925 | //\r | |
1926 | if (Type == VariableStoreTypeMax) {\r | |
72399dae | 1927 | Status = EFI_NOT_FOUND;\r |
1928 | goto Done;\r | |
1929 | }\r | |
0f7aff72 RN |
1930 | Variable.StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r |
1931 | Variable.EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r | |
1932 | Variable.CurrPtr = Variable.StartPtr;\r | |
72399dae | 1933 | }\r |
0f7aff72 | 1934 | \r |
72399dae | 1935 | //\r |
1936 | // Variable is found\r | |
1937 | //\r | |
0f7aff72 | 1938 | if (Variable.CurrPtr->State == VAR_ADDED) {\r |
8a2d4996 | 1939 | if ((AtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) == 0) {\r |
0f7aff72 RN |
1940 | \r |
1941 | //\r | |
1942 | // Don't return NV variable when HOB overrides it\r | |
1943 | //\r | |
1944 | if ((VariableStoreHeader[VariableStoreTypeHob] != NULL) && (VariableStoreHeader[VariableStoreTypeNv] != NULL) && \r | |
1945 | (Variable.StartPtr == GetStartPointer (VariableStoreHeader[VariableStoreTypeNv]))\r | |
1946 | ) {\r | |
1947 | VariableInHob.StartPtr = GetStartPointer (VariableStoreHeader[VariableStoreTypeHob]);\r | |
1948 | VariableInHob.EndPtr = GetEndPointer (VariableStoreHeader[VariableStoreTypeHob]);\r | |
1949 | Status = FindVariableEx (\r | |
1950 | GetVariableNamePtr (Variable.CurrPtr),\r | |
1951 | &Variable.CurrPtr->VendorGuid,\r | |
9622df63 | 1952 | FALSE,\r |
0f7aff72 RN |
1953 | &VariableInHob\r |
1954 | );\r | |
1955 | if (!EFI_ERROR (Status)) {\r | |
1956 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
1957 | continue;\r | |
1958 | }\r | |
1959 | }\r | |
1960 | \r | |
72399dae | 1961 | VarNameSize = NameSizeOfVariable (Variable.CurrPtr);\r |
1962 | ASSERT (VarNameSize != 0);\r | |
1963 | \r | |
1964 | if (VarNameSize <= *VariableNameSize) {\r | |
0f7aff72 RN |
1965 | CopyMem (VariableName, GetVariableNamePtr (Variable.CurrPtr), VarNameSize);\r |
1966 | CopyMem (VendorGuid, &Variable.CurrPtr->VendorGuid, sizeof (EFI_GUID));\r | |
72399dae | 1967 | Status = EFI_SUCCESS;\r |
1968 | } else {\r | |
1969 | Status = EFI_BUFFER_TOO_SMALL;\r | |
1970 | }\r | |
1971 | \r | |
1972 | *VariableNameSize = VarNameSize;\r | |
1973 | goto Done;\r | |
1974 | }\r | |
1975 | }\r | |
1976 | \r | |
1977 | Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r | |
1978 | }\r | |
33a5a666 | 1979 | \r |
8d3a5c82 | 1980 | Done:\r |
72399dae | 1981 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
1982 | return Status;\r | |
1983 | }\r | |
1984 | \r | |
1985 | /**\r | |
1986 | \r | |
1987 | This code sets variable in storage blocks (Volatile or Non-Volatile).\r | |
1988 | \r | |
8a2d4996 | 1989 | @param VariableName Name of Variable to be found.\r |
1990 | @param VendorGuid Variable vendor GUID.\r | |
72399dae | 1991 | @param Attributes Attribute value of the variable found\r |
1992 | @param DataSize Size of Data found. If size is less than the\r | |
1993 | data, this value contains the required size.\r | |
8a2d4996 | 1994 | @param Data Data pointer.\r |
72399dae | 1995 | \r |
8a2d4996 | 1996 | @return EFI_INVALID_PARAMETER Invalid parameter.\r |
1997 | @return EFI_SUCCESS Set successfully.\r | |
1998 | @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r | |
1999 | @return EFI_NOT_FOUND Not found.\r | |
2000 | @return EFI_WRITE_PROTECTED Variable is read-only.\r | |
72399dae | 2001 | \r |
2002 | **/\r | |
2003 | EFI_STATUS\r | |
2004 | EFIAPI\r | |
8a2d4996 | 2005 | VariableServiceSetVariable (\r |
72399dae | 2006 | IN CHAR16 *VariableName,\r |
2007 | IN EFI_GUID *VendorGuid,\r | |
2008 | IN UINT32 Attributes,\r | |
2009 | IN UINTN DataSize,\r | |
2010 | IN VOID *Data\r | |
2011 | )\r | |
2012 | {\r | |
2013 | VARIABLE_POINTER_TRACK Variable;\r | |
2014 | EFI_STATUS Status;\r | |
2015 | VARIABLE_HEADER *NextVariable;\r | |
2016 | EFI_PHYSICAL_ADDRESS Point;\r | |
2017 | \r | |
2018 | //\r | |
8a2d4996 | 2019 | // Check input parameters.\r |
72399dae | 2020 | //\r |
2021 | if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r | |
2022 | return EFI_INVALID_PARAMETER;\r | |
8a2d4996 | 2023 | } \r |
48a0e6bf | 2024 | \r |
2025 | if (DataSize != 0 && Data == NULL) {\r | |
2026 | return EFI_INVALID_PARAMETER;\r | |
2027 | }\r | |
2028 | \r | |
8e38f18e | 2029 | //\r |
2030 | // Not support authenticated variable write yet.\r | |
2031 | //\r | |
2032 | if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r | |
2033 | return EFI_INVALID_PARAMETER;\r | |
2034 | }\r | |
2035 | \r | |
72399dae | 2036 | //\r |
8a2d4996 | 2037 | // Make sure if runtime bit is set, boot service bit is set also.\r |
72399dae | 2038 | //\r |
2039 | if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r | |
2040 | return EFI_INVALID_PARAMETER;\r | |
2041 | }\r | |
2042 | \r | |
2043 | //\r | |
2044 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
188e4e84 | 2045 | // the DataSize is limited to maximum size of PcdGet32 (PcdMaxHardwareErrorVariableSize)\r |
2046 | // bytes for HwErrRec, and PcdGet32 (PcdMaxVariableSize) bytes for the others.\r | |
72399dae | 2047 | //\r |
2048 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
188e4e84 | 2049 | if ((DataSize > PcdGet32 (PcdMaxHardwareErrorVariableSize)) ||\r |
2050 | (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxHardwareErrorVariableSize))) {\r | |
72399dae | 2051 | return EFI_INVALID_PARAMETER;\r |
2052 | }\r | |
2053 | //\r | |
8a2d4996 | 2054 | // According to UEFI spec, HARDWARE_ERROR_RECORD variable name convention should be L"HwErrRecXXXX".\r |
72399dae | 2055 | //\r |
2056 | if (StrnCmp(VariableName, L"HwErrRec", StrLen(L"HwErrRec")) != 0) {\r | |
2057 | return EFI_INVALID_PARAMETER;\r | |
2058 | }\r | |
2059 | } else {\r | |
2060 | //\r | |
2061 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
188e4e84 | 2062 | // the DataSize is limited to maximum size of PcdGet32 (PcdMaxVariableSize) bytes.\r |
72399dae | 2063 | //\r |
188e4e84 | 2064 | if ((DataSize > PcdGet32 (PcdMaxVariableSize)) ||\r |
2065 | (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxVariableSize))) {\r | |
72399dae | 2066 | return EFI_INVALID_PARAMETER;\r |
2067 | } \r | |
2068 | } \r | |
2069 | \r | |
2070 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
2071 | \r | |
2072 | //\r | |
8a2d4996 | 2073 | // Consider reentrant in MCA/INIT/NMI. It needs be reupdated.\r |
72399dae | 2074 | //\r |
2075 | if (1 < InterlockedIncrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState)) {\r | |
8a2d4996 | 2076 | Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r |
72399dae | 2077 | //\r |
8a2d4996 | 2078 | // Parse non-volatile variable data and get last variable offset.\r |
72399dae | 2079 | //\r |
2080 | NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point);\r | |
2081 | while ((NextVariable < GetEndPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point)) \r | |
2082 | && IsValidVariableHeader (NextVariable)) {\r | |
2083 | NextVariable = GetNextVariablePtr (NextVariable);\r | |
2084 | }\r | |
2085 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) Point;\r | |
2086 | }\r | |
2087 | \r | |
2088 | //\r | |
8a2d4996 | 2089 | // Check whether the input variable is already existed.\r |
72399dae | 2090 | //\r |
9622df63 SZ |
2091 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, TRUE);\r |
2092 | if (!EFI_ERROR (Status)) {\r | |
2093 | if (((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) && AtRuntime ()) {\r | |
2094 | return EFI_WRITE_PROTECTED;\r | |
2095 | }\r | |
2096 | }\r | |
72399dae | 2097 | \r |
2098 | //\r | |
8a2d4996 | 2099 | // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang.\r |
72399dae | 2100 | //\r |
2101 | AutoUpdateLangVariable (VariableName, Data, DataSize);\r | |
2102 | \r | |
2103 | Status = UpdateVariable (VariableName, VendorGuid, Data, DataSize, Attributes, &Variable);\r | |
2104 | \r | |
fdb7765f | 2105 | InterlockedDecrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState);\r |
052ad7e1 | 2106 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
fdb7765f | 2107 | \r |
8d3a5c82 | 2108 | return Status;\r |
2109 | }\r | |
2110 | \r | |
7c80e839 | 2111 | /**\r |
8d3a5c82 | 2112 | \r |
2113 | This code returns information about the EFI variables.\r | |
2114 | \r | |
7c80e839 | 2115 | @param Attributes Attributes bitmask to specify the type of variables\r |
2116 | on which to return information.\r | |
2117 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
2118 | for the EFI variables associated with the attributes specified.\r | |
2119 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
2120 | for EFI variables associated with the attributes specified.\r | |
2121 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
2122 | associated with the attributes specified.\r | |
8d3a5c82 | 2123 | \r |
7c80e839 | 2124 | @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r |
2125 | @return EFI_SUCCESS Query successfully.\r | |
2126 | @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r | |
8d3a5c82 | 2127 | \r |
7c80e839 | 2128 | **/\r |
052ad7e1 A |
2129 | EFI_STATUS\r |
2130 | EFIAPI\r | |
8a2d4996 | 2131 | VariableServiceQueryVariableInfo (\r |
052ad7e1 A |
2132 | IN UINT32 Attributes,\r |
2133 | OUT UINT64 *MaximumVariableStorageSize,\r | |
2134 | OUT UINT64 *RemainingVariableStorageSize,\r | |
2135 | OUT UINT64 *MaximumVariableSize\r | |
2136 | )\r | |
8d3a5c82 | 2137 | {\r |
2138 | VARIABLE_HEADER *Variable;\r | |
2139 | VARIABLE_HEADER *NextVariable;\r | |
2140 | UINT64 VariableSize;\r | |
2141 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
2fcdca1d | 2142 | UINT64 CommonVariableTotalSize;\r |
2143 | UINT64 HwErrVariableTotalSize;\r | |
2144 | \r | |
2145 | CommonVariableTotalSize = 0;\r | |
2146 | HwErrVariableTotalSize = 0;\r | |
8d3a5c82 | 2147 | \r |
c6492839 | 2148 | if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r |
8d3a5c82 | 2149 | return EFI_INVALID_PARAMETER;\r |
2150 | }\r | |
2fcdca1d | 2151 | \r |
c6492839 | 2152 | if((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == 0) {\r |
8d3a5c82 | 2153 | //\r |
2154 | // Make sure the Attributes combination is supported by the platform.\r | |
2155 | //\r | |
c6492839 | 2156 | return EFI_UNSUPPORTED; \r |
8d3a5c82 | 2157 | } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r |
2158 | //\r | |
2159 | // Make sure if runtime bit is set, boot service bit is set also.\r | |
2160 | //\r | |
2161 | return EFI_INVALID_PARAMETER;\r | |
8a2d4996 | 2162 | } else if (AtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r |
8d3a5c82 | 2163 | //\r |
2164 | // Make sure RT Attribute is set if we are in Runtime phase.\r | |
2165 | //\r | |
2166 | return EFI_INVALID_PARAMETER;\r | |
2fcdca1d | 2167 | } else if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
2168 | //\r | |
2169 | // Make sure Hw Attribute is set with NV.\r | |
2170 | //\r | |
2171 | return EFI_INVALID_PARAMETER;\r | |
8e38f18e | 2172 | } else if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r |
2173 | //\r | |
2174 | // Not support authentiated variable write yet.\r | |
2175 | //\r | |
2176 | return EFI_UNSUPPORTED;\r | |
8d3a5c82 | 2177 | }\r |
2178 | \r | |
052ad7e1 | 2179 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8d3a5c82 | 2180 | \r |
2181 | if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r | |
2182 | //\r | |
2183 | // Query is Volatile related.\r | |
2184 | //\r | |
052ad7e1 | 2185 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r |
8d3a5c82 | 2186 | } else {\r |
2187 | //\r | |
2188 | // Query is Non-Volatile related.\r | |
2189 | //\r | |
8a2d4996 | 2190 | VariableStoreHeader = mNvVariableCache;\r |
8d3a5c82 | 2191 | }\r |
2192 | \r | |
2193 | //\r | |
2194 | // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize\r | |
2195 | // with the storage size (excluding the storage header size).\r | |
2196 | //\r | |
2197 | *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r | |
c6492839 | 2198 | \r |
2199 | //\r | |
2200 | // Harware error record variable needs larger size.\r | |
2201 | //\r | |
2fcdca1d | 2202 | if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
188e4e84 | 2203 | *MaximumVariableStorageSize = PcdGet32 (PcdHwErrStorageSize);\r |
2204 | *MaximumVariableSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r | |
2fcdca1d | 2205 | } else {\r |
2206 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r | |
188e4e84 | 2207 | ASSERT (PcdGet32 (PcdHwErrStorageSize) < VariableStoreHeader->Size);\r |
2208 | *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize);\r | |
2fcdca1d | 2209 | }\r |
2210 | \r | |
2211 | //\r | |
188e4e84 | 2212 | // Let *MaximumVariableSize be PcdGet32 (PcdMaxVariableSize) with the exception of the variable header size.\r |
2fcdca1d | 2213 | //\r |
188e4e84 | 2214 | *MaximumVariableSize = PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER);\r |
c6492839 | 2215 | }\r |
8d3a5c82 | 2216 | \r |
2217 | //\r | |
2218 | // Point to the starting address of the variables.\r | |
2219 | //\r | |
9cad030b | 2220 | Variable = GetStartPointer (VariableStoreHeader);\r |
8d3a5c82 | 2221 | \r |
2222 | //\r | |
2223 | // Now walk through the related variable store.\r | |
2224 | //\r | |
6f90dfbc | 2225 | while ((Variable < GetEndPointer (VariableStoreHeader)) && IsValidVariableHeader (Variable)) {\r |
8d3a5c82 | 2226 | NextVariable = GetNextVariablePtr (Variable);\r |
2227 | VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r | |
2228 | \r | |
8a2d4996 | 2229 | if (AtRuntime ()) {\r |
8d3a5c82 | 2230 | //\r |
8a2d4996 | 2231 | // We don't take the state of the variables in mind\r |
8d3a5c82 | 2232 | // when calculating RemainingVariableStorageSize,\r |
2233 | // since the space occupied by variables not marked with\r | |
2234 | // VAR_ADDED is not allowed to be reclaimed in Runtime.\r | |
2235 | //\r | |
3b425367 | 2236 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
2fcdca1d | 2237 | HwErrVariableTotalSize += VariableSize;\r |
2238 | } else {\r | |
2239 | CommonVariableTotalSize += VariableSize;\r | |
2240 | }\r | |
8d3a5c82 | 2241 | } else {\r |
2242 | //\r | |
8a2d4996 | 2243 | // Only care about Variables with State VAR_ADDED, because\r |
8d3a5c82 | 2244 | // the space not marked as VAR_ADDED is reclaimable now.\r |
2245 | //\r | |
2246 | if (Variable->State == VAR_ADDED) {\r | |
3b425367 | 2247 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
2fcdca1d | 2248 | HwErrVariableTotalSize += VariableSize;\r |
2249 | } else {\r | |
2250 | CommonVariableTotalSize += VariableSize;\r | |
2251 | }\r | |
8d3a5c82 | 2252 | }\r |
2253 | }\r | |
2254 | \r | |
2255 | //\r | |
8a2d4996 | 2256 | // Go to the next one.\r |
8d3a5c82 | 2257 | //\r |
2258 | Variable = NextVariable;\r | |
2259 | }\r | |
2260 | \r | |
2fcdca1d | 2261 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD){\r |
2262 | *RemainingVariableStorageSize = *MaximumVariableStorageSize - HwErrVariableTotalSize;\r | |
2263 | }else {\r | |
2264 | *RemainingVariableStorageSize = *MaximumVariableStorageSize - CommonVariableTotalSize;\r | |
2265 | }\r | |
2266 | \r | |
c6492839 | 2267 | if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {\r |
2268 | *MaximumVariableSize = 0;\r | |
2269 | } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) < *MaximumVariableSize) {\r | |
2270 | *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (VARIABLE_HEADER);\r | |
2271 | }\r | |
2272 | \r | |
052ad7e1 | 2273 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8d3a5c82 | 2274 | return EFI_SUCCESS;\r |
2275 | }\r | |
2276 | \r | |
7c80e839 | 2277 | \r |
2278 | /**\r | |
8a2d4996 | 2279 | This function reclaims variable storage if free size is below the threshold.\r |
2280 | \r | |
7c80e839 | 2281 | **/\r |
7800593d | 2282 | VOID\r |
7800593d | 2283 | ReclaimForOS(\r |
8a2d4996 | 2284 | VOID\r |
7800593d LG |
2285 | )\r |
2286 | {\r | |
9948c0b0 | 2287 | EFI_STATUS Status;\r |
2fcdca1d | 2288 | UINTN CommonVariableSpace;\r |
2289 | UINTN RemainingCommonVariableSpace;\r | |
2290 | UINTN RemainingHwErrVariableSpace;\r | |
7800593d | 2291 | \r |
7800593d LG |
2292 | Status = EFI_SUCCESS; \r |
2293 | \r | |
2fcdca1d | 2294 | CommonVariableSpace = ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase)))->Size - sizeof (VARIABLE_STORE_HEADER) - PcdGet32(PcdHwErrStorageSize); //Allowable max size of common variable storage space\r |
2295 | \r | |
2296 | RemainingCommonVariableSpace = CommonVariableSpace - mVariableModuleGlobal->CommonVariableTotalSize;\r | |
2297 | \r | |
2298 | RemainingHwErrVariableSpace = PcdGet32 (PcdHwErrStorageSize) - mVariableModuleGlobal->HwErrVariableTotalSize;\r | |
7800593d | 2299 | //\r |
9948c0b0 | 2300 | // Check if the free area is blow a threshold.\r |
7800593d | 2301 | //\r |
2fcdca1d | 2302 | if ((RemainingCommonVariableSpace < PcdGet32 (PcdMaxVariableSize))\r |
9948c0b0 | 2303 | || ((PcdGet32 (PcdHwErrStorageSize) != 0) && \r |
2304 | (RemainingHwErrVariableSpace < PcdGet32 (PcdMaxHardwareErrorVariableSize)))){\r | |
7800593d | 2305 | Status = Reclaim (\r |
2fcdca1d | 2306 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r |
2307 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
2308 | FALSE,\r | |
2309 | NULL\r | |
2310 | );\r | |
7800593d LG |
2311 | ASSERT_EFI_ERROR (Status);\r |
2312 | }\r | |
2313 | }\r | |
2314 | \r | |
8a2d4996 | 2315 | \r |
7c80e839 | 2316 | /**\r |
8a2d4996 | 2317 | Initializes variable write service after FVB was ready.\r |
7c80e839 | 2318 | \r |
8a2d4996 | 2319 | @retval EFI_SUCCESS Function successfully executed.\r |
2320 | @retval Others Fail to initialize the variable service.\r | |
2321 | \r | |
2322 | **/\r | |
2323 | EFI_STATUS\r | |
2324 | VariableWriteServiceInitialize (\r | |
2325 | VOID\r | |
2326 | )\r | |
2327 | {\r | |
2328 | EFI_STATUS Status;\r | |
2329 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
2330 | UINTN Index;\r | |
2331 | UINT8 Data;\r | |
8a2d4996 | 2332 | EFI_PHYSICAL_ADDRESS VariableStoreBase;\r |
0f7aff72 RN |
2333 | VARIABLE_HEADER *Variable;\r |
2334 | VOID *VariableData;\r | |
8a2d4996 | 2335 | \r |
2336 | VariableStoreBase = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r | |
2337 | VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r | |
0f7aff72 | 2338 | \r |
8a2d4996 | 2339 | //\r |
2340 | // Check if the free area is really free.\r | |
2341 | //\r | |
0f7aff72 | 2342 | for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {\r |
8a2d4996 | 2343 | Data = ((UINT8 *) mNvVariableCache)[Index];\r |
2344 | if (Data != 0xff) {\r | |
2345 | //\r | |
2346 | // There must be something wrong in variable store, do reclaim operation.\r | |
2347 | //\r | |
2348 | Status = Reclaim (\r | |
2349 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
2350 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
2351 | FALSE,\r | |
2352 | NULL\r | |
2353 | );\r | |
2354 | if (EFI_ERROR (Status)) {\r | |
2355 | return Status;\r | |
2356 | }\r | |
2357 | break;\r | |
2358 | }\r | |
2359 | }\r | |
2360 | \r | |
0f7aff72 RN |
2361 | //\r |
2362 | // Flush the HOB variable to flash and invalidate HOB variable.\r | |
2363 | //\r | |
2364 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r | |
2365 | //\r | |
2366 | // Clear the HobVariableBase to avoid SetVariable() updating the variable in HOB\r | |
2367 | //\r | |
2368 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r | |
2369 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = 0;\r | |
2370 | \r | |
2371 | for ( Variable = GetStartPointer (VariableStoreHeader)\r | |
2372 | ; (Variable < GetEndPointer (VariableStoreHeader) && IsValidVariableHeader (Variable))\r | |
2373 | ; Variable = GetNextVariablePtr (Variable)\r | |
2374 | ) {\r | |
2375 | ASSERT (Variable->State == VAR_ADDED);\r | |
2376 | ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);\r | |
2377 | VariableData = GetVariableDataPtr (Variable);\r | |
2378 | Status = VariableServiceSetVariable (\r | |
2379 | GetVariableNamePtr (Variable),\r | |
2380 | &Variable->VendorGuid,\r | |
2381 | Variable->Attributes,\r | |
2382 | Variable->DataSize,\r | |
2383 | VariableData\r | |
2384 | );\r | |
2385 | ASSERT_EFI_ERROR (Status);\r | |
2386 | }\r | |
2387 | }\r | |
8a2d4996 | 2388 | return EFI_SUCCESS;\r |
2389 | }\r | |
2390 | \r | |
2391 | \r | |
2392 | /**\r | |
2393 | Initializes variable store area for non-volatile and volatile variable.\r | |
7c80e839 | 2394 | \r |
2395 | @retval EFI_SUCCESS Function successfully executed.\r | |
2396 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
2397 | \r | |
2398 | **/\r | |
8d3a5c82 | 2399 | EFI_STATUS\r |
8d3a5c82 | 2400 | VariableCommonInitialize (\r |
8a2d4996 | 2401 | VOID\r |
8d3a5c82 | 2402 | )\r |
8d3a5c82 | 2403 | {\r |
2404 | EFI_STATUS Status;\r | |
8d3a5c82 | 2405 | VARIABLE_STORE_HEADER *VolatileVariableStore;\r |
2406 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
2407 | VARIABLE_HEADER *NextVariable;\r | |
8a9e0b72 | 2408 | EFI_PHYSICAL_ADDRESS TempVariableStoreHeader;\r |
8a9e0b72 | 2409 | EFI_PHYSICAL_ADDRESS VariableStoreBase;\r |
052ad7e1 | 2410 | UINT64 VariableStoreLength;\r |
2fcdca1d | 2411 | UINTN ScratchSize;\r |
aa75dfec | 2412 | UINTN VariableSize;\r |
0f7aff72 | 2413 | EFI_HOB_GUID_TYPE *GuidHob;\r |
8d3a5c82 | 2414 | \r |
7800593d LG |
2415 | //\r |
2416 | // Allocate runtime memory for variable driver global structure.\r | |
2417 | //\r | |
72399dae | 2418 | mVariableModuleGlobal = AllocateRuntimeZeroPool (sizeof (VARIABLE_MODULE_GLOBAL));\r |
7800593d LG |
2419 | if (mVariableModuleGlobal == NULL) {\r |
2420 | return EFI_OUT_OF_RESOURCES;\r | |
2421 | }\r | |
8d3a5c82 | 2422 | \r |
8a2d4996 | 2423 | InitializeLock (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r |
8d3a5c82 | 2424 | \r |
48cd992a | 2425 | //\r |
2426 | // Note that in EdkII variable driver implementation, Hardware Error Record type variable\r | |
2427 | // is stored with common variable in the same NV region. So the platform integrator should\r | |
2428 | // ensure that the value of PcdHwErrStorageSize is less than or equal to the value of \r | |
2429 | // PcdFlashNvStorageVariableSize.\r | |
2430 | //\r | |
188e4e84 | 2431 | ASSERT (PcdGet32 (PcdHwErrStorageSize) <= PcdGet32 (PcdFlashNvStorageVariableSize));\r |
48cd992a | 2432 | \r |
0f7aff72 RN |
2433 | //\r |
2434 | // Get HOB variable store.\r | |
2435 | //\r | |
2436 | GuidHob = GetFirstGuidHob (&gEfiVariableGuid);\r | |
2437 | if (GuidHob != NULL) {\r | |
f68af18e RN |
2438 | VariableStoreHeader = GET_GUID_HOB_DATA (GuidHob);\r |
2439 | if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r | |
2440 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStoreHeader;\r | |
2441 | } else {\r | |
2442 | DEBUG ((EFI_D_ERROR, "HOB Variable Store header is corrupted!\n"));\r | |
2443 | }\r | |
0f7aff72 RN |
2444 | }\r |
2445 | \r | |
8d3a5c82 | 2446 | //\r |
2fcdca1d | 2447 | // Allocate memory for volatile variable store, note that there is a scratch space to store scratch data.\r |
8d3a5c82 | 2448 | //\r |
188e4e84 | 2449 | ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32 (PcdMaxHardwareErrorVariableSize));\r |
2450 | VolatileVariableStore = AllocateRuntimePool (PcdGet32 (PcdVariableStoreSize) + ScratchSize);\r | |
8d3a5c82 | 2451 | if (VolatileVariableStore == NULL) {\r |
2452 | FreePool (mVariableModuleGlobal);\r | |
2453 | return EFI_OUT_OF_RESOURCES;\r | |
2454 | }\r | |
2455 | \r | |
188e4e84 | 2456 | SetMem (VolatileVariableStore, PcdGet32 (PcdVariableStoreSize) + ScratchSize, 0xff);\r |
8d3a5c82 | 2457 | \r |
2458 | //\r | |
8a2d4996 | 2459 | // Initialize Variable Specific Data.\r |
8d3a5c82 | 2460 | //\r |
052ad7e1 | 2461 | mVariableModuleGlobal->VariableGlobal.VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r |
9cad030b | 2462 | mVariableModuleGlobal->VolatileLastVariableOffset = (UINTN) GetStartPointer (VolatileVariableStore) - (UINTN) VolatileVariableStore;\r |
8a2d4996 | 2463 | mVariableModuleGlobal->FvbInstance = NULL;\r |
8d3a5c82 | 2464 | \r |
3709c4cd | 2465 | CopyGuid (&VolatileVariableStore->Signature, &gEfiVariableGuid);\r |
8a2d4996 | 2466 | VolatileVariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r |
2467 | VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r | |
2468 | VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r | |
2469 | VolatileVariableStore->Reserved = 0;\r | |
2470 | VolatileVariableStore->Reserved1 = 0;\r | |
8d3a5c82 | 2471 | \r |
2472 | //\r | |
d9303576 | 2473 | // Get non-volatile variable store.\r |
8d3a5c82 | 2474 | //\r |
2475 | \r | |
92a4f6f3 | 2476 | TempVariableStoreHeader = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r |
2477 | if (TempVariableStoreHeader == 0) {\r | |
2478 | TempVariableStoreHeader = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r | |
2479 | }\r | |
d6550260 | 2480 | \r |
2481 | //\r | |
2482 | // Check if the Firmware Volume is not corrupted\r | |
2483 | //\r | |
2484 | if ((((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader))->Signature != EFI_FVH_SIGNATURE) ||\r | |
2485 | (!CompareGuid (&gEfiSystemNvDataFvGuid, &((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader))->FileSystemGuid))) {\r | |
2486 | Status = EFI_VOLUME_CORRUPTED;\r | |
2487 | DEBUG ((EFI_D_ERROR, "Firmware Volume for Variable Store is corrupted\n"));\r | |
2488 | goto Done;\r | |
2489 | }\r | |
2490 | \r | |
8a2d4996 | 2491 | VariableStoreBase = TempVariableStoreHeader + \\r |
2492 | (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r | |
2493 | VariableStoreLength = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize) - \\r | |
8a9e0b72 | 2494 | (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r |
8d3a5c82 | 2495 | \r |
8a2d4996 | 2496 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r |
2497 | VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r | |
2498 | if (GetVariableStoreStatus (VariableStoreHeader) != EfiValid) {\r | |
2499 | Status = EFI_VOLUME_CORRUPTED;\r | |
2500 | DEBUG((EFI_D_INFO, "Variable Store header is corrupted\n"));\r | |
7800593d | 2501 | goto Done;\r |
8a2d4996 | 2502 | } \r |
2503 | ASSERT(VariableStoreHeader->Size == VariableStoreLength);\r | |
2504 | \r | |
8d3a5c82 | 2505 | //\r |
8a2d4996 | 2506 | // Parse non-volatile variable data and get last variable offset.\r |
8d3a5c82 | 2507 | //\r |
8a2d4996 | 2508 | NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase);\r |
2509 | while (IsValidVariableHeader (NextVariable)) {\r | |
2510 | VariableSize = NextVariable->NameSize + NextVariable->DataSize + sizeof (VARIABLE_HEADER);\r | |
2511 | if ((NextVariable->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r | |
2512 | mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VariableSize);\r | |
2513 | } else {\r | |
2514 | mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VariableSize);\r | |
8d3a5c82 | 2515 | }\r |
2516 | \r | |
8a2d4996 | 2517 | NextVariable = GetNextVariablePtr (NextVariable);\r |
2518 | }\r | |
7800593d | 2519 | \r |
8a2d4996 | 2520 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) VariableStoreBase;\r |
2521 | \r | |
2522 | //\r | |
2523 | // Allocate runtime memory used for a memory copy of the FLASH region.\r | |
2524 | // Keep the memory and the FLASH in sync as updates occur\r | |
2525 | //\r | |
2526 | mNvVariableCache = AllocateRuntimeZeroPool ((UINTN)VariableStoreLength);\r | |
2527 | if (mNvVariableCache == NULL) {\r | |
2528 | Status = EFI_OUT_OF_RESOURCES;\r | |
2529 | goto Done;\r | |
8d3a5c82 | 2530 | }\r |
8a2d4996 | 2531 | CopyMem (mNvVariableCache, (CHAR8 *)(UINTN)VariableStoreBase, (UINTN)VariableStoreLength);\r |
2532 | Status = EFI_SUCCESS;\r | |
8d3a5c82 | 2533 | \r |
7800593d | 2534 | Done:\r |
8d3a5c82 | 2535 | if (EFI_ERROR (Status)) {\r |
2536 | FreePool (mVariableModuleGlobal);\r | |
2537 | FreePool (VolatileVariableStore);\r | |
2538 | }\r | |
2539 | \r | |
2540 | return Status;\r | |
2541 | }\r | |
052ad7e1 | 2542 | \r |
052ad7e1 | 2543 | \r |
aa75dfec | 2544 | /**\r |
8a2d4996 | 2545 | Get the proper fvb handle and/or fvb protocol by the given Flash address.\r |
aa75dfec | 2546 | \r |
8a2d4996 | 2547 | @param[in] Address The Flash address.\r |
2548 | @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r | |
2549 | @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r | |
aa75dfec | 2550 | \r |
aa75dfec | 2551 | **/\r |
8a2d4996 | 2552 | EFI_STATUS\r |
2553 | GetFvbInfoByAddress (\r | |
2554 | IN EFI_PHYSICAL_ADDRESS Address,\r | |
2555 | OUT EFI_HANDLE *FvbHandle OPTIONAL,\r | |
2556 | OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r | |
8a9e0b72 | 2557 | )\r |
2558 | {\r | |
8a2d4996 | 2559 | EFI_STATUS Status;\r |
2560 | EFI_HANDLE *HandleBuffer;\r | |
2561 | UINTN HandleCount;\r | |
2562 | UINTN Index;\r | |
2563 | EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r | |
2564 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
2565 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
2566 | EFI_FVB_ATTRIBUTES_2 Attributes;\r | |
2567 | \r | |
8a9e0b72 | 2568 | //\r |
8a2d4996 | 2569 | // Get all FVB handles.\r |
8a9e0b72 | 2570 | //\r |
8a2d4996 | 2571 | Status = GetFvbCountAndBuffer (&HandleCount, &HandleBuffer);\r |
8a9e0b72 | 2572 | if (EFI_ERROR (Status)) {\r |
8a2d4996 | 2573 | return EFI_NOT_FOUND;\r |
8a9e0b72 | 2574 | }\r |
8a2d4996 | 2575 | \r |
8a9e0b72 | 2576 | //\r |
8a2d4996 | 2577 | // Get the FVB to access variable store.\r |
8a9e0b72 | 2578 | //\r |
8a2d4996 | 2579 | Fvb = NULL;\r |
f0480ecf | 2580 | for (Index = 0; Index < HandleCount; Index += 1, Status = EFI_NOT_FOUND, Fvb = NULL) {\r |
8a2d4996 | 2581 | Status = GetFvbByHandle (HandleBuffer[Index], &Fvb);\r |
8a9e0b72 | 2582 | if (EFI_ERROR (Status)) {\r |
2583 | Status = EFI_NOT_FOUND;\r | |
2584 | break;\r | |
2585 | }\r | |
2586 | \r | |
2587 | //\r | |
2588 | // Ensure this FVB protocol supported Write operation.\r | |
2589 | //\r | |
2590 | Status = Fvb->GetAttributes (Fvb, &Attributes);\r | |
2591 | if (EFI_ERROR (Status) || ((Attributes & EFI_FVB2_WRITE_STATUS) == 0)) {\r | |
2592 | continue; \r | |
2593 | }\r | |
8a2d4996 | 2594 | \r |
8a9e0b72 | 2595 | //\r |
8a2d4996 | 2596 | // Compare the address and select the right one.\r |
8a9e0b72 | 2597 | //\r |
2598 | Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r | |
2599 | if (EFI_ERROR (Status)) {\r | |
2600 | continue;\r | |
2601 | }\r | |
2602 | \r | |
2603 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r | |
8a2d4996 | 2604 | if ((Address >= FvbBaseAddress) && (Address < (FvbBaseAddress + FwVolHeader->FvLength))) {\r |
2605 | if (FvbHandle != NULL) {\r | |
2606 | *FvbHandle = HandleBuffer[Index];\r | |
2607 | }\r | |
2608 | if (FvbProtocol != NULL) {\r | |
2609 | *FvbProtocol = Fvb;\r | |
2610 | }\r | |
2611 | Status = EFI_SUCCESS;\r | |
8a9e0b72 | 2612 | break;\r |
2613 | }\r | |
2614 | }\r | |
8a9e0b72 | 2615 | FreePool (HandleBuffer);\r |
533020ef | 2616 | \r |
8a2d4996 | 2617 | if (Fvb == NULL) {\r |
2618 | Status = EFI_NOT_FOUND;\r | |
8a9e0b72 | 2619 | }\r |
052ad7e1 | 2620 | \r |
8a2d4996 | 2621 | return Status; \r |
052ad7e1 A |
2622 | }\r |
2623 | \r |