]>
Commit | Line | Data |
---|---|---|
052ad7e1 | 1 | /** @file\r |
fa0737a8 | 2 | The common variable operation routines shared by DXE_RUNTIME variable\r |
8a2d4996 | 3 | module and DXE_SMM variable module.\r |
fa0737a8 | 4 | \r |
18a7dbbc SZ |
5 | Caution: This module requires additional review when modified.\r |
6 | This driver will have external input - variable data. They may be input in SMM mode.\r | |
7 | This external input must be validated carefully to avoid security issue like\r | |
8 | buffer overflow, integer overflow.\r | |
9 | \r | |
10 | VariableServiceGetNextVariableName () and VariableServiceQueryVariableInfo() are external API.\r | |
11 | They need check input parameter.\r | |
12 | \r | |
13 | VariableServiceGetVariable() and VariableServiceSetVariable() are external API\r | |
14 | to receive datasize and data buffer. The size should be checked carefully.\r | |
15 | \r | |
fa0737a8 SZ |
16 | VariableServiceSetVariable() should also check authenticate data to avoid buffer overflow,\r |
17 | integer overflow. It should also check attribute to avoid authentication bypass.\r | |
18 | \r | |
302eb57b | 19 | Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>\r |
d741d141 | 20 | (C) Copyright 2015-2018 Hewlett Packard Enterprise Development LP<BR>\r |
edf88807 MK |
21 | Copyright (c) Microsoft Corporation.<BR>\r |
22 | \r | |
9d510e61 | 23 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
8d3a5c82 | 24 | \r |
052ad7e1 | 25 | **/\r |
8d3a5c82 | 26 | \r |
8d3a5c82 | 27 | #include "Variable.h"\r |
6b0d7b01 | 28 | #include "VariableNonVolatile.h"\r |
20a27a64 | 29 | #include "VariableParsing.h"\r |
aab3b9b9 | 30 | #include "VariableRuntimeCache.h"\r |
33a5a666 | 31 | \r |
7800593d | 32 | VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r |
8d3a5c82 | 33 | \r |
7c80e839 | 34 | ///\r |
8a2d4996 | 35 | /// Define a memory cache that improves the search performance for a variable.\r |
7cd69959 | 36 | /// For EmuNvMode == TRUE, it will be equal to NonVolatileVariableBase.\r |
7c80e839 | 37 | ///\r |
ff843847 | 38 | VARIABLE_STORE_HEADER *mNvVariableCache = NULL;\r |
aa79b0b3 | 39 | \r |
9b18845a DL |
40 | ///\r |
41 | /// Memory cache of Fv Header.\r | |
42 | ///\r | |
43 | EFI_FIRMWARE_VOLUME_HEADER *mNvFvHeaderCache = NULL;\r | |
44 | \r | |
8a2d4996 | 45 | ///\r |
46 | /// The memory entry used for variable statistics data.\r | |
47 | ///\r | |
ff843847 RN |
48 | VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r |
49 | \r | |
ff843847 RN |
50 | ///\r |
51 | /// The flag to indicate whether the platform has left the DXE phase of execution.\r | |
52 | ///\r | |
53 | BOOLEAN mEndOfDxe = FALSE;\r | |
54 | \r | |
55 | ///\r | |
8021f4c7 SZ |
56 | /// It indicates the var check request source.\r |
57 | /// In the implementation, DXE is regarded as untrusted, and SMM is trusted.\r | |
ff843847 | 58 | ///\r |
8021f4c7 | 59 | VAR_CHECK_REQUEST_SOURCE mRequestSource = VarCheckFromUntrusted;\r |
8d3a5c82 | 60 | \r |
00ab76e0 SZ |
61 | //\r |
62 | // It will record the current boot error flag before EndOfDxe.\r | |
63 | //\r | |
64 | VAR_ERROR_FLAG mCurrentBootVarErrFlag = VAR_ERROR_FLAG_NO_ERROR;\r | |
33a5a666 | 65 | \r |
fa0737a8 SZ |
66 | VARIABLE_ENTRY_PROPERTY mVariableEntryProperty[] = {\r |
67 | {\r | |
68 | &gEdkiiVarErrorFlagGuid,\r | |
69 | VAR_ERROR_FLAG_NAME,\r | |
70 | {\r | |
71 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
72 | VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r | |
73 | VARIABLE_ATTRIBUTE_NV_BS_RT,\r | |
74 | sizeof (VAR_ERROR_FLAG),\r | |
75 | sizeof (VAR_ERROR_FLAG)\r | |
76 | }\r | |
77 | },\r | |
78 | };\r | |
79 | \r | |
8021f4c7 | 80 | AUTH_VAR_LIB_CONTEXT_IN mAuthContextIn = {\r |
fa0737a8 | 81 | AUTH_VAR_LIB_CONTEXT_IN_STRUCT_VERSION,\r |
dbd030bb SZ |
82 | //\r |
83 | // StructSize, TO BE FILLED\r | |
84 | //\r | |
85 | 0,\r | |
fa0737a8 SZ |
86 | //\r |
87 | // MaxAuthVariableSize, TO BE FILLED\r | |
88 | //\r | |
89 | 0,\r | |
90 | VariableExLibFindVariable,\r | |
91 | VariableExLibFindNextVariable,\r | |
92 | VariableExLibUpdateVariable,\r | |
93 | VariableExLibGetScratchBuffer,\r | |
94 | VariableExLibCheckRemainingSpaceForConsistency,\r | |
95 | VariableExLibAtRuntime,\r | |
96 | };\r | |
97 | \r | |
8021f4c7 | 98 | AUTH_VAR_LIB_CONTEXT_OUT mAuthContextOut;\r |
fa0737a8 | 99 | \r |
7c80e839 | 100 | /**\r |
101 | \r | |
102 | This function writes data to the FWH at the correct LBA even if the LBAs\r | |
103 | are fragmented.\r | |
104 | \r | |
8a2d4996 | 105 | @param Global Pointer to VARAIBLE_GLOBAL structure.\r |
106 | @param Volatile Point out the Variable is Volatile or Non-Volatile.\r | |
107 | @param SetByIndex TRUE if target pointer is given as index.\r | |
108 | FALSE if target pointer is absolute.\r | |
109 | @param Fvb Pointer to the writable FVB protocol.\r | |
7c80e839 | 110 | @param DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r |
8a2d4996 | 111 | structure.\r |
112 | @param DataSize Size of data to be written.\r | |
113 | @param Buffer Pointer to the buffer from which data is written.\r | |
7c80e839 | 114 | \r |
8a2d4996 | 115 | @retval EFI_INVALID_PARAMETER Parameters not valid.\r |
989f7a2c | 116 | @retval EFI_UNSUPPORTED Fvb is a NULL for Non-Volatile variable update.\r |
117 | @retval EFI_OUT_OF_RESOURCES The remaining size is not enough.\r | |
8a2d4996 | 118 | @retval EFI_SUCCESS Variable store successfully updated.\r |
7c80e839 | 119 | \r |
120 | **/\r | |
8d3a5c82 | 121 | EFI_STATUS\r |
8d3a5c82 | 122 | UpdateVariableStore (\r |
8a9e0b72 | 123 | IN VARIABLE_GLOBAL *Global,\r |
124 | IN BOOLEAN Volatile,\r | |
125 | IN BOOLEAN SetByIndex,\r | |
126 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r | |
127 | IN UINTN DataPtrIndex,\r | |
128 | IN UINT32 DataSize,\r | |
129 | IN UINT8 *Buffer\r | |
8d3a5c82 | 130 | )\r |
8d3a5c82 | 131 | {\r |
132 | EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r | |
133 | UINTN BlockIndex2;\r | |
134 | UINTN LinearOffset;\r | |
135 | UINTN CurrWriteSize;\r | |
136 | UINTN CurrWritePtr;\r | |
137 | UINT8 *CurrBuffer;\r | |
138 | EFI_LBA LbaNumber;\r | |
139 | UINTN Size;\r | |
8d3a5c82 | 140 | VARIABLE_STORE_HEADER *VolatileBase;\r |
141 | EFI_PHYSICAL_ADDRESS FvVolHdr;\r | |
142 | EFI_PHYSICAL_ADDRESS DataPtr;\r | |
143 | EFI_STATUS Status;\r | |
144 | \r | |
874c8434 | 145 | FvVolHdr = 0;\r |
8d3a5c82 | 146 | DataPtr = DataPtrIndex;\r |
147 | \r | |
148 | //\r | |
8a2d4996 | 149 | // Check if the Data is Volatile.\r |
8d3a5c82 | 150 | //\r |
7cd69959 | 151 | if (!Volatile && !mVariableModuleGlobal->VariableGlobal.EmuNvMode) {\r |
fa0737a8 | 152 | if (Fvb == NULL) {\r |
989f7a2c | 153 | return EFI_UNSUPPORTED;\r |
fa0737a8 | 154 | }\r |
8a9e0b72 | 155 | Status = Fvb->GetPhysicalAddress(Fvb, &FvVolHdr);\r |
156 | ASSERT_EFI_ERROR (Status);\r | |
157 | \r | |
8d3a5c82 | 158 | //\r |
159 | // Data Pointer should point to the actual Address where data is to be\r | |
8a2d4996 | 160 | // written.\r |
8d3a5c82 | 161 | //\r |
162 | if (SetByIndex) {\r | |
052ad7e1 | 163 | DataPtr += mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r |
8d3a5c82 | 164 | }\r |
165 | \r | |
874c8434 | 166 | if ((DataPtr + DataSize) > (FvVolHdr + mNvFvHeaderCache->FvLength)) {\r |
989f7a2c | 167 | return EFI_OUT_OF_RESOURCES;\r |
8d3a5c82 | 168 | }\r |
169 | } else {\r | |
170 | //\r | |
171 | // Data Pointer should point to the actual Address where data is to be\r | |
8a2d4996 | 172 | // written.\r |
8d3a5c82 | 173 | //\r |
7cd69959 SZ |
174 | if (Volatile) {\r |
175 | VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r | |
176 | if (SetByIndex) {\r | |
177 | DataPtr += mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r | |
178 | }\r | |
8d3a5c82 | 179 | \r |
7cd69959 SZ |
180 | if ((DataPtr + DataSize) > ((UINTN) VolatileBase + VolatileBase->Size)) {\r |
181 | return EFI_OUT_OF_RESOURCES;\r | |
182 | }\r | |
183 | } else {\r | |
184 | //\r | |
185 | // Emulated non-volatile variable mode.\r | |
186 | //\r | |
187 | if (SetByIndex) {\r | |
188 | DataPtr += (UINTN) mNvVariableCache;\r | |
189 | }\r | |
190 | \r | |
191 | if ((DataPtr + DataSize) > ((UINTN) mNvVariableCache + mNvVariableCache->Size)) {\r | |
192 | return EFI_OUT_OF_RESOURCES;\r | |
193 | }\r | |
8d3a5c82 | 194 | }\r |
fa0737a8 | 195 | \r |
c6492839 | 196 | //\r |
7cd69959 | 197 | // If Volatile/Emulated Non-volatile Variable just do a simple mem copy.\r |
fa0737a8 | 198 | //\r |
c6492839 | 199 | CopyMem ((UINT8 *)(UINTN)DataPtr, Buffer, DataSize);\r |
8d3a5c82 | 200 | return EFI_SUCCESS;\r |
201 | }\r | |
fa0737a8 | 202 | \r |
8d3a5c82 | 203 | //\r |
8a2d4996 | 204 | // If we are here we are dealing with Non-Volatile Variables.\r |
8d3a5c82 | 205 | //\r |
874c8434 | 206 | LinearOffset = (UINTN) FvVolHdr;\r |
8d3a5c82 | 207 | CurrWritePtr = (UINTN) DataPtr;\r |
208 | CurrWriteSize = DataSize;\r | |
209 | CurrBuffer = Buffer;\r | |
210 | LbaNumber = 0;\r | |
211 | \r | |
212 | if (CurrWritePtr < LinearOffset) {\r | |
213 | return EFI_INVALID_PARAMETER;\r | |
214 | }\r | |
215 | \r | |
9b18845a | 216 | for (PtrBlockMapEntry = mNvFvHeaderCache->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r |
8d3a5c82 | 217 | for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r |
218 | //\r | |
219 | // Check to see if the Variable Writes are spanning through multiple\r | |
220 | // blocks.\r | |
221 | //\r | |
222 | if ((CurrWritePtr >= LinearOffset) && (CurrWritePtr < LinearOffset + PtrBlockMapEntry->Length)) {\r | |
223 | if ((CurrWritePtr + CurrWriteSize) <= (LinearOffset + PtrBlockMapEntry->Length)) {\r | |
8a9e0b72 | 224 | Status = Fvb->Write (\r |
225 | Fvb,\r | |
8d3a5c82 | 226 | LbaNumber,\r |
227 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
228 | &CurrWriteSize,\r | |
229 | CurrBuffer\r | |
230 | );\r | |
8a9e0b72 | 231 | return Status;\r |
8d3a5c82 | 232 | } else {\r |
233 | Size = (UINT32) (LinearOffset + PtrBlockMapEntry->Length - CurrWritePtr);\r | |
8a9e0b72 | 234 | Status = Fvb->Write (\r |
235 | Fvb,\r | |
8d3a5c82 | 236 | LbaNumber,\r |
237 | (UINTN) (CurrWritePtr - LinearOffset),\r | |
238 | &Size,\r | |
239 | CurrBuffer\r | |
240 | );\r | |
241 | if (EFI_ERROR (Status)) {\r | |
242 | return Status;\r | |
243 | }\r | |
244 | \r | |
245 | CurrWritePtr = LinearOffset + PtrBlockMapEntry->Length;\r | |
246 | CurrBuffer = CurrBuffer + Size;\r | |
247 | CurrWriteSize = CurrWriteSize - Size;\r | |
248 | }\r | |
249 | }\r | |
250 | \r | |
251 | LinearOffset += PtrBlockMapEntry->Length;\r | |
252 | LbaNumber++;\r | |
253 | }\r | |
254 | }\r | |
255 | \r | |
256 | return EFI_SUCCESS;\r | |
257 | }\r | |
258 | \r | |
4edb1866 SZ |
259 | /**\r |
260 | Record variable error flag.\r | |
261 | \r | |
262 | @param[in] Flag Variable error flag to record.\r | |
263 | @param[in] VariableName Name of variable.\r | |
264 | @param[in] VendorGuid Guid of variable.\r | |
265 | @param[in] Attributes Attributes of the variable.\r | |
266 | @param[in] VariableSize Size of the variable.\r | |
267 | \r | |
268 | **/\r | |
269 | VOID\r | |
270 | RecordVarErrorFlag (\r | |
271 | IN VAR_ERROR_FLAG Flag,\r | |
272 | IN CHAR16 *VariableName,\r | |
273 | IN EFI_GUID *VendorGuid,\r | |
274 | IN UINT32 Attributes,\r | |
275 | IN UINTN VariableSize\r | |
276 | )\r | |
277 | {\r | |
278 | EFI_STATUS Status;\r | |
279 | VARIABLE_POINTER_TRACK Variable;\r | |
280 | VAR_ERROR_FLAG *VarErrFlag;\r | |
281 | VAR_ERROR_FLAG TempFlag;\r | |
282 | \r | |
283 | DEBUG_CODE (\r | |
284 | DEBUG ((EFI_D_ERROR, "RecordVarErrorFlag (0x%02x) %s:%g - 0x%08x - 0x%x\n", Flag, VariableName, VendorGuid, Attributes, VariableSize));\r | |
285 | if (Flag == VAR_ERROR_FLAG_SYSTEM_ERROR) {\r | |
286 | if (AtRuntime ()) {\r | |
287 | DEBUG ((EFI_D_ERROR, "CommonRuntimeVariableSpace = 0x%x - CommonVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonRuntimeVariableSpace, mVariableModuleGlobal->CommonVariableTotalSize));\r | |
288 | } else {\r | |
289 | DEBUG ((EFI_D_ERROR, "CommonVariableSpace = 0x%x - CommonVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonVariableSpace, mVariableModuleGlobal->CommonVariableTotalSize));\r | |
290 | }\r | |
291 | } else {\r | |
292 | DEBUG ((EFI_D_ERROR, "CommonMaxUserVariableSpace = 0x%x - CommonUserVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonMaxUserVariableSpace, mVariableModuleGlobal->CommonUserVariableTotalSize));\r | |
293 | }\r | |
294 | );\r | |
295 | \r | |
00ab76e0 SZ |
296 | if (!mEndOfDxe) {\r |
297 | //\r | |
298 | // Before EndOfDxe, just record the current boot variable error flag to local variable,\r | |
299 | // and leave the variable error flag in NV flash as the last boot variable error flag.\r | |
300 | // After EndOfDxe in InitializeVarErrorFlag (), the variable error flag in NV flash\r | |
301 | // will be initialized to this local current boot variable error flag.\r | |
302 | //\r | |
303 | mCurrentBootVarErrFlag &= Flag;\r | |
304 | return;\r | |
305 | }\r | |
306 | \r | |
4edb1866 SZ |
307 | //\r |
308 | // Record error flag (it should have be initialized).\r | |
309 | //\r | |
310 | Status = FindVariable (\r | |
311 | VAR_ERROR_FLAG_NAME,\r | |
312 | &gEdkiiVarErrorFlagGuid,\r | |
313 | &Variable,\r | |
314 | &mVariableModuleGlobal->VariableGlobal,\r | |
315 | FALSE\r | |
316 | );\r | |
317 | if (!EFI_ERROR (Status)) {\r | |
04401023 | 318 | VarErrFlag = (VAR_ERROR_FLAG *) GetVariableDataPtr (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
4edb1866 SZ |
319 | TempFlag = *VarErrFlag;\r |
320 | TempFlag &= Flag;\r | |
321 | if (TempFlag == *VarErrFlag) {\r | |
322 | return;\r | |
323 | }\r | |
324 | Status = UpdateVariableStore (\r | |
325 | &mVariableModuleGlobal->VariableGlobal,\r | |
326 | FALSE,\r | |
327 | FALSE,\r | |
328 | mVariableModuleGlobal->FvbInstance,\r | |
329 | (UINTN) VarErrFlag - (UINTN) mNvVariableCache + (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
330 | sizeof (TempFlag),\r | |
331 | &TempFlag\r | |
332 | );\r | |
333 | if (!EFI_ERROR (Status)) {\r | |
334 | //\r | |
335 | // Update the data in NV cache.\r | |
336 | //\r | |
4a23636a | 337 | *VarErrFlag = TempFlag;\r |
aab3b9b9 MK |
338 | Status = SynchronizeRuntimeVariableCache (\r |
339 | &mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeNvCache,\r | |
302eb57b MK |
340 | 0,\r |
341 | mNvVariableCache->Size\r | |
aab3b9b9 MK |
342 | );\r |
343 | ASSERT_EFI_ERROR (Status);\r | |
4edb1866 SZ |
344 | }\r |
345 | }\r | |
346 | }\r | |
347 | \r | |
348 | /**\r | |
349 | Initialize variable error flag.\r | |
350 | \r | |
351 | Before EndOfDxe, the variable indicates the last boot variable error flag,\r | |
352 | then it means the last boot variable error flag must be got before EndOfDxe.\r | |
353 | After EndOfDxe, the variable indicates the current boot variable error flag,\r | |
354 | then it means the current boot variable error flag must be got after EndOfDxe.\r | |
355 | \r | |
356 | **/\r | |
357 | VOID\r | |
358 | InitializeVarErrorFlag (\r | |
359 | VOID\r | |
360 | )\r | |
361 | {\r | |
362 | EFI_STATUS Status;\r | |
363 | VARIABLE_POINTER_TRACK Variable;\r | |
364 | VAR_ERROR_FLAG Flag;\r | |
365 | VAR_ERROR_FLAG VarErrFlag;\r | |
366 | \r | |
367 | if (!mEndOfDxe) {\r | |
368 | return;\r | |
369 | }\r | |
370 | \r | |
00ab76e0 | 371 | Flag = mCurrentBootVarErrFlag;\r |
4edb1866 SZ |
372 | DEBUG ((EFI_D_INFO, "Initialize variable error flag (%02x)\n", Flag));\r |
373 | \r | |
374 | Status = FindVariable (\r | |
375 | VAR_ERROR_FLAG_NAME,\r | |
376 | &gEdkiiVarErrorFlagGuid,\r | |
377 | &Variable,\r | |
378 | &mVariableModuleGlobal->VariableGlobal,\r | |
379 | FALSE\r | |
380 | );\r | |
381 | if (!EFI_ERROR (Status)) {\r | |
04401023 | 382 | VarErrFlag = *((VAR_ERROR_FLAG *) GetVariableDataPtr (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat));\r |
4edb1866 SZ |
383 | if (VarErrFlag == Flag) {\r |
384 | return;\r | |
385 | }\r | |
386 | }\r | |
387 | \r | |
388 | UpdateVariable (\r | |
389 | VAR_ERROR_FLAG_NAME,\r | |
390 | &gEdkiiVarErrorFlagGuid,\r | |
391 | &Flag,\r | |
392 | sizeof (Flag),\r | |
393 | VARIABLE_ATTRIBUTE_NV_BS_RT,\r | |
fa0737a8 SZ |
394 | 0,\r |
395 | 0,\r | |
396 | &Variable,\r | |
397 | NULL\r | |
4edb1866 SZ |
398 | );\r |
399 | }\r | |
400 | \r | |
401 | /**\r | |
402 | Is user variable?\r | |
403 | \r | |
404 | @param[in] Variable Pointer to variable header.\r | |
405 | \r | |
406 | @retval TRUE User variable.\r | |
407 | @retval FALSE System variable.\r | |
408 | \r | |
409 | **/\r | |
410 | BOOLEAN\r | |
411 | IsUserVariable (\r | |
412 | IN VARIABLE_HEADER *Variable\r | |
413 | )\r | |
414 | {\r | |
415 | VAR_CHECK_VARIABLE_PROPERTY Property;\r | |
416 | \r | |
417 | //\r | |
418 | // Only after End Of Dxe, the variables belong to system variable are fixed.\r | |
419 | // If PcdMaxUserNvStorageVariableSize is 0, it means user variable share the same NV storage with system variable,\r | |
420 | // then no need to check if the variable is user variable or not specially.\r | |
421 | //\r | |
422 | if (mEndOfDxe && (mVariableModuleGlobal->CommonMaxUserVariableSpace != mVariableModuleGlobal->CommonVariableSpace)) {\r | |
04401023 MK |
423 | if (VarCheckLibVariablePropertyGet (\r |
424 | GetVariableNamePtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r | |
425 | GetVendorGuidPtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r | |
426 | &Property\r | |
427 | ) == EFI_NOT_FOUND) {\r | |
4edb1866 SZ |
428 | return TRUE;\r |
429 | }\r | |
430 | }\r | |
431 | return FALSE;\r | |
432 | }\r | |
433 | \r | |
434 | /**\r | |
435 | Calculate common user variable total size.\r | |
436 | \r | |
437 | **/\r | |
438 | VOID\r | |
439 | CalculateCommonUserVariableTotalSize (\r | |
440 | VOID\r | |
441 | )\r | |
442 | {\r | |
443 | VARIABLE_HEADER *Variable;\r | |
444 | VARIABLE_HEADER *NextVariable;\r | |
445 | UINTN VariableSize;\r | |
446 | VAR_CHECK_VARIABLE_PROPERTY Property;\r | |
447 | \r | |
448 | //\r | |
449 | // Only after End Of Dxe, the variables belong to system variable are fixed.\r | |
450 | // If PcdMaxUserNvStorageVariableSize is 0, it means user variable share the same NV storage with system variable,\r | |
451 | // then no need to calculate the common user variable total size specially.\r | |
452 | //\r | |
453 | if (mEndOfDxe && (mVariableModuleGlobal->CommonMaxUserVariableSpace != mVariableModuleGlobal->CommonVariableSpace)) {\r | |
454 | Variable = GetStartPointer (mNvVariableCache);\r | |
455 | while (IsValidVariableHeader (Variable, GetEndPointer (mNvVariableCache))) {\r | |
04401023 | 456 | NextVariable = GetNextVariablePtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
4edb1866 SZ |
457 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
458 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
04401023 MK |
459 | if (VarCheckLibVariablePropertyGet (\r |
460 | GetVariableNamePtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r | |
461 | GetVendorGuidPtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r | |
462 | &Property\r | |
463 | ) == EFI_NOT_FOUND) {\r | |
4edb1866 SZ |
464 | //\r |
465 | // No property, it is user variable.\r | |
466 | //\r | |
467 | mVariableModuleGlobal->CommonUserVariableTotalSize += VariableSize;\r | |
468 | }\r | |
469 | }\r | |
470 | \r | |
471 | Variable = NextVariable;\r | |
472 | }\r | |
473 | }\r | |
474 | }\r | |
475 | \r | |
476 | /**\r | |
477 | Initialize variable quota.\r | |
478 | \r | |
479 | **/\r | |
480 | VOID\r | |
481 | InitializeVariableQuota (\r | |
482 | VOID\r | |
483 | )\r | |
484 | {\r | |
8021f4c7 | 485 | if (!mEndOfDxe) {\r |
4edb1866 SZ |
486 | return;\r |
487 | }\r | |
4edb1866 SZ |
488 | \r |
489 | InitializeVarErrorFlag ();\r | |
490 | CalculateCommonUserVariableTotalSize ();\r | |
491 | }\r | |
052ad7e1 | 492 | \r |
7c80e839 | 493 | /**\r |
494 | \r | |
495 | Variable store garbage collection and reclaim operation.\r | |
496 | \r | |
fa0737a8 SZ |
497 | @param[in] VariableBase Base address of variable store.\r |
498 | @param[out] LastVariableOffset Offset of last variable.\r | |
499 | @param[in] IsVolatile The variable store is volatile or not;\r | |
500 | if it is non-volatile, need FTW.\r | |
501 | @param[in, out] UpdatingPtrTrack Pointer to updating variable pointer track structure.\r | |
502 | @param[in] NewVariable Pointer to new variable.\r | |
503 | @param[in] NewVariableSize New variable size.\r | |
7c80e839 | 504 | \r |
fa0737a8 SZ |
505 | @return EFI_SUCCESS Reclaim operation has finished successfully.\r |
506 | @return EFI_OUT_OF_RESOURCES No enough memory resources or variable space.\r | |
507 | @return Others Unexpect error happened during reclaim operation.\r | |
7c80e839 | 508 | \r |
509 | **/\r | |
8d3a5c82 | 510 | EFI_STATUS\r |
8d3a5c82 | 511 | Reclaim (\r |
fa0737a8 SZ |
512 | IN EFI_PHYSICAL_ADDRESS VariableBase,\r |
513 | OUT UINTN *LastVariableOffset,\r | |
514 | IN BOOLEAN IsVolatile,\r | |
515 | IN OUT VARIABLE_POINTER_TRACK *UpdatingPtrTrack,\r | |
516 | IN VARIABLE_HEADER *NewVariable,\r | |
517 | IN UINTN NewVariableSize\r | |
8d3a5c82 | 518 | )\r |
8d3a5c82 | 519 | {\r |
520 | VARIABLE_HEADER *Variable;\r | |
814bae52 | 521 | VARIABLE_HEADER *AddedVariable;\r |
8d3a5c82 | 522 | VARIABLE_HEADER *NextVariable;\r |
814bae52 | 523 | VARIABLE_HEADER *NextAddedVariable;\r |
8d3a5c82 | 524 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r |
525 | UINT8 *ValidBuffer;\r | |
814bae52 | 526 | UINTN MaximumBufferSize;\r |
8d3a5c82 | 527 | UINTN VariableSize;\r |
814bae52 | 528 | UINTN NameSize;\r |
8d3a5c82 | 529 | UINT8 *CurrPtr;\r |
814bae52 | 530 | VOID *Point0;\r |
531 | VOID *Point1;\r | |
532 | BOOLEAN FoundAdded;\r | |
8d3a5c82 | 533 | EFI_STATUS Status;\r |
8f3a9e58 | 534 | UINTN CommonVariableTotalSize;\r |
4edb1866 | 535 | UINTN CommonUserVariableTotalSize;\r |
8f3a9e58 | 536 | UINTN HwErrVariableTotalSize;\r |
23b06935 | 537 | VARIABLE_HEADER *UpdatingVariable;\r |
7baf3c69 | 538 | VARIABLE_HEADER *UpdatingInDeletedTransition;\r |
04401023 | 539 | BOOLEAN AuthFormat;\r |
23b06935 | 540 | \r |
04401023 | 541 | AuthFormat = mVariableModuleGlobal->VariableGlobal.AuthFormat;\r |
23b06935 | 542 | UpdatingVariable = NULL;\r |
7baf3c69 | 543 | UpdatingInDeletedTransition = NULL;\r |
23b06935 SZ |
544 | if (UpdatingPtrTrack != NULL) {\r |
545 | UpdatingVariable = UpdatingPtrTrack->CurrPtr;\r | |
7baf3c69 | 546 | UpdatingInDeletedTransition = UpdatingPtrTrack->InDeletedTransitionPtr;\r |
23b06935 | 547 | }\r |
8d3a5c82 | 548 | \r |
549 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r | |
8f3a9e58 SZ |
550 | \r |
551 | CommonVariableTotalSize = 0;\r | |
4edb1866 | 552 | CommonUserVariableTotalSize = 0;\r |
8f3a9e58 | 553 | HwErrVariableTotalSize = 0;\r |
8d3a5c82 | 554 | \r |
7cd69959 | 555 | if (IsVolatile || mVariableModuleGlobal->VariableGlobal.EmuNvMode) {\r |
128ef095 SZ |
556 | //\r |
557 | // Start Pointers for the variable.\r | |
558 | //\r | |
559 | Variable = GetStartPointer (VariableStoreHeader);\r | |
560 | MaximumBufferSize = sizeof (VARIABLE_STORE_HEADER);\r | |
561 | \r | |
6ebffb67 | 562 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r |
04401023 | 563 | NextVariable = GetNextVariablePtr (Variable, AuthFormat);\r |
128ef095 SZ |
564 | if ((Variable->State == VAR_ADDED || Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) &&\r |
565 | Variable != UpdatingVariable &&\r | |
566 | Variable != UpdatingInDeletedTransition\r | |
567 | ) {\r | |
568 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r | |
569 | MaximumBufferSize += VariableSize;\r | |
570 | }\r | |
8d3a5c82 | 571 | \r |
128ef095 | 572 | Variable = NextVariable;\r |
8d3a5c82 | 573 | }\r |
574 | \r | |
128ef095 SZ |
575 | if (NewVariable != NULL) {\r |
576 | //\r | |
577 | // Add the new variable size.\r | |
578 | //\r | |
579 | MaximumBufferSize += NewVariableSize;\r | |
580 | }\r | |
8d3a5c82 | 581 | \r |
7baf3c69 | 582 | //\r |
128ef095 SZ |
583 | // Reserve the 1 Bytes with Oxff to identify the\r |
584 | // end of the variable buffer.\r | |
7baf3c69 | 585 | //\r |
128ef095 SZ |
586 | MaximumBufferSize += 1;\r |
587 | ValidBuffer = AllocatePool (MaximumBufferSize);\r | |
588 | if (ValidBuffer == NULL) {\r | |
589 | return EFI_OUT_OF_RESOURCES;\r | |
590 | }\r | |
591 | } else {\r | |
592 | //\r | |
593 | // For NV variable reclaim, don't allocate pool here and just use mNvVariableCache\r | |
594 | // as the buffer to reduce SMRAM consumption for SMM variable driver.\r | |
595 | //\r | |
596 | MaximumBufferSize = mNvVariableCache->Size;\r | |
597 | ValidBuffer = (UINT8 *) mNvVariableCache;\r | |
8d3a5c82 | 598 | }\r |
599 | \r | |
814bae52 | 600 | SetMem (ValidBuffer, MaximumBufferSize, 0xff);\r |
8d3a5c82 | 601 | \r |
602 | //\r | |
8a2d4996 | 603 | // Copy variable store header.\r |
8d3a5c82 | 604 | //\r |
814bae52 | 605 | CopyMem (ValidBuffer, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r |
606 | CurrPtr = (UINT8 *) GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
8d3a5c82 | 607 | \r |
814bae52 | 608 | //\r |
8a2d4996 | 609 | // Reinstall all ADDED variables as long as they are not identical to Updating Variable.\r |
fa0737a8 | 610 | //\r |
814bae52 | 611 | Variable = GetStartPointer (VariableStoreHeader);\r |
6ebffb67 | 612 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r |
04401023 | 613 | NextVariable = GetNextVariablePtr (Variable, AuthFormat);\r |
7baf3c69 | 614 | if (Variable != UpdatingVariable && Variable->State == VAR_ADDED) {\r |
8d3a5c82 | 615 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
616 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
617 | CurrPtr += VariableSize;\r | |
2fcdca1d | 618 | if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
8f3a9e58 | 619 | HwErrVariableTotalSize += VariableSize;\r |
2fcdca1d | 620 | } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
8f3a9e58 | 621 | CommonVariableTotalSize += VariableSize;\r |
4edb1866 SZ |
622 | if (IsUserVariable (Variable)) {\r |
623 | CommonUserVariableTotalSize += VariableSize;\r | |
624 | }\r | |
2fcdca1d | 625 | }\r |
8d3a5c82 | 626 | }\r |
8d3a5c82 | 627 | Variable = NextVariable;\r |
628 | }\r | |
5ead4a07 | 629 | \r |
814bae52 | 630 | //\r |
8a2d4996 | 631 | // Reinstall all in delete transition variables.\r |
fa0737a8 | 632 | //\r |
7baf3c69 | 633 | Variable = GetStartPointer (VariableStoreHeader);\r |
6ebffb67 | 634 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r |
04401023 | 635 | NextVariable = GetNextVariablePtr (Variable, AuthFormat);\r |
7baf3c69 | 636 | if (Variable != UpdatingVariable && Variable != UpdatingInDeletedTransition && Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r |
814bae52 | 637 | \r |
638 | //\r | |
fa0737a8 | 639 | // Buffer has cached all ADDED variable.\r |
814bae52 | 640 | // Per IN_DELETED variable, we have to guarantee that\r |
fa0737a8 SZ |
641 | // no ADDED one in previous buffer.\r |
642 | //\r | |
643 | \r | |
814bae52 | 644 | FoundAdded = FALSE;\r |
645 | AddedVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r | |
6ebffb67 | 646 | while (IsValidVariableHeader (AddedVariable, GetEndPointer ((VARIABLE_STORE_HEADER *) ValidBuffer))) {\r |
04401023 MK |
647 | NextAddedVariable = GetNextVariablePtr (AddedVariable, AuthFormat);\r |
648 | NameSize = NameSizeOfVariable (AddedVariable, AuthFormat);\r | |
649 | if (CompareGuid (\r | |
650 | GetVendorGuidPtr (AddedVariable, AuthFormat),\r | |
651 | GetVendorGuidPtr (Variable, AuthFormat)\r | |
652 | ) && NameSize == NameSizeOfVariable (Variable, AuthFormat)) {\r | |
653 | Point0 = (VOID *) GetVariableNamePtr (AddedVariable, AuthFormat);\r | |
654 | Point1 = (VOID *) GetVariableNamePtr (Variable, AuthFormat);\r | |
23b06935 | 655 | if (CompareMem (Point0, Point1, NameSize) == 0) {\r |
814bae52 | 656 | FoundAdded = TRUE;\r |
657 | break;\r | |
658 | }\r | |
659 | }\r | |
660 | AddedVariable = NextAddedVariable;\r | |
661 | }\r | |
662 | if (!FoundAdded) {\r | |
5ead4a07 | 663 | //\r |
8a2d4996 | 664 | // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED.\r |
5ead4a07 | 665 | //\r |
814bae52 | 666 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
667 | CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r | |
5ead4a07 | 668 | ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r |
814bae52 | 669 | CurrPtr += VariableSize;\r |
2fcdca1d | 670 | if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
8f3a9e58 | 671 | HwErrVariableTotalSize += VariableSize;\r |
2fcdca1d | 672 | } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
8f3a9e58 | 673 | CommonVariableTotalSize += VariableSize;\r |
4edb1866 SZ |
674 | if (IsUserVariable (Variable)) {\r |
675 | CommonUserVariableTotalSize += VariableSize;\r | |
676 | }\r | |
2fcdca1d | 677 | }\r |
814bae52 | 678 | }\r |
679 | }\r | |
680 | \r | |
681 | Variable = NextVariable;\r | |
682 | }\r | |
8d3a5c82 | 683 | \r |
7baf3c69 SZ |
684 | //\r |
685 | // Install the new variable if it is not NULL.\r | |
686 | //\r | |
687 | if (NewVariable != NULL) {\r | |
809e2bbf | 688 | if (((UINTN) CurrPtr - (UINTN) ValidBuffer) + NewVariableSize > VariableStoreHeader->Size) {\r |
7baf3c69 SZ |
689 | //\r |
690 | // No enough space to store the new variable.\r | |
691 | //\r | |
692 | Status = EFI_OUT_OF_RESOURCES;\r | |
693 | goto Done;\r | |
694 | }\r | |
695 | if (!IsVolatile) {\r | |
696 | if ((NewVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
697 | HwErrVariableTotalSize += NewVariableSize;\r | |
698 | } else if ((NewVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
699 | CommonVariableTotalSize += NewVariableSize;\r | |
4edb1866 SZ |
700 | if (IsUserVariable (NewVariable)) {\r |
701 | CommonUserVariableTotalSize += NewVariableSize;\r | |
702 | }\r | |
7baf3c69 SZ |
703 | }\r |
704 | if ((HwErrVariableTotalSize > PcdGet32 (PcdHwErrStorageSize)) ||\r | |
4edb1866 SZ |
705 | (CommonVariableTotalSize > mVariableModuleGlobal->CommonVariableSpace) ||\r |
706 | (CommonUserVariableTotalSize > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r | |
7baf3c69 SZ |
707 | //\r |
708 | // No enough space to store the new variable by NV or NV+HR attribute.\r | |
709 | //\r | |
710 | Status = EFI_OUT_OF_RESOURCES;\r | |
711 | goto Done;\r | |
712 | }\r | |
713 | }\r | |
714 | \r | |
715 | CopyMem (CurrPtr, (UINT8 *) NewVariable, NewVariableSize);\r | |
716 | ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r | |
717 | if (UpdatingVariable != NULL) {\r | |
718 | UpdatingPtrTrack->CurrPtr = (VARIABLE_HEADER *)((UINTN)UpdatingPtrTrack->StartPtr + ((UINTN)CurrPtr - (UINTN)GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer)));\r | |
719 | UpdatingPtrTrack->InDeletedTransitionPtr = NULL;\r | |
720 | }\r | |
721 | CurrPtr += NewVariableSize;\r | |
722 | }\r | |
723 | \r | |
7cd69959 | 724 | if (IsVolatile || mVariableModuleGlobal->VariableGlobal.EmuNvMode) {\r |
8d3a5c82 | 725 | //\r |
7cd69959 | 726 | // If volatile/emulated non-volatile variable store, just copy valid buffer.\r |
8d3a5c82 | 727 | //\r |
728 | SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r | |
809e2bbf HW |
729 | CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) CurrPtr - (UINTN) ValidBuffer);\r |
730 | *LastVariableOffset = (UINTN) CurrPtr - (UINTN) ValidBuffer;\r | |
7cd69959 SZ |
731 | if (!IsVolatile) {\r |
732 | //\r | |
733 | // Emulated non-volatile variable mode.\r | |
734 | //\r | |
735 | mVariableModuleGlobal->HwErrVariableTotalSize = HwErrVariableTotalSize;\r | |
736 | mVariableModuleGlobal->CommonVariableTotalSize = CommonVariableTotalSize;\r | |
737 | mVariableModuleGlobal->CommonUserVariableTotalSize = CommonUserVariableTotalSize;\r | |
738 | }\r | |
8a2d4996 | 739 | Status = EFI_SUCCESS;\r |
8d3a5c82 | 740 | } else {\r |
741 | //\r | |
742 | // If non-volatile variable store, perform FTW here.\r | |
743 | //\r | |
744 | Status = FtwVariableSpace (\r | |
745 | VariableBase,\r | |
128ef095 | 746 | (VARIABLE_STORE_HEADER *) ValidBuffer\r |
8d3a5c82 | 747 | );\r |
128ef095 | 748 | if (!EFI_ERROR (Status)) {\r |
809e2bbf | 749 | *LastVariableOffset = (UINTN) CurrPtr - (UINTN) ValidBuffer;\r |
8f3a9e58 SZ |
750 | mVariableModuleGlobal->HwErrVariableTotalSize = HwErrVariableTotalSize;\r |
751 | mVariableModuleGlobal->CommonVariableTotalSize = CommonVariableTotalSize;\r | |
4edb1866 | 752 | mVariableModuleGlobal->CommonUserVariableTotalSize = CommonUserVariableTotalSize;\r |
128ef095 | 753 | } else {\r |
b2c59ce8 SZ |
754 | mVariableModuleGlobal->HwErrVariableTotalSize = 0;\r |
755 | mVariableModuleGlobal->CommonVariableTotalSize = 0;\r | |
756 | mVariableModuleGlobal->CommonUserVariableTotalSize = 0;\r | |
4edb1866 SZ |
757 | Variable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableBase);\r |
758 | while (IsValidVariableHeader (Variable, GetEndPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableBase))) {\r | |
04401023 | 759 | NextVariable = GetNextVariablePtr (Variable, AuthFormat);\r |
4edb1866 | 760 | VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r |
128ef095 | 761 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
4edb1866 | 762 | mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r |
128ef095 | 763 | } else if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
4edb1866 SZ |
764 | mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r |
765 | if (IsUserVariable (Variable)) {\r | |
766 | mVariableModuleGlobal->CommonUserVariableTotalSize += VariableSize;\r | |
767 | }\r | |
128ef095 | 768 | }\r |
8f3a9e58 | 769 | \r |
4edb1866 | 770 | Variable = NextVariable;\r |
128ef095 | 771 | }\r |
4edb1866 | 772 | *LastVariableOffset = (UINTN) Variable - (UINTN) VariableBase;\r |
8f3a9e58 | 773 | }\r |
8d3a5c82 | 774 | }\r |
775 | \r | |
7baf3c69 | 776 | Done:\r |
7cd69959 | 777 | if (IsVolatile || mVariableModuleGlobal->VariableGlobal.EmuNvMode) {\r |
aab3b9b9 MK |
778 | Status = SynchronizeRuntimeVariableCache (\r |
779 | &mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeVolatileCache,\r | |
780 | 0,\r | |
781 | VariableStoreHeader->Size\r | |
782 | );\r | |
783 | ASSERT_EFI_ERROR (Status);\r | |
128ef095 SZ |
784 | FreePool (ValidBuffer);\r |
785 | } else {\r | |
786 | //\r | |
787 | // For NV variable reclaim, we use mNvVariableCache as the buffer, so copy the data back.\r | |
788 | //\r | |
aab3b9b9 MK |
789 | CopyMem (mNvVariableCache, (UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size);\r |
790 | Status = SynchronizeRuntimeVariableCache (\r | |
791 | &mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeNvCache,\r | |
792 | 0,\r | |
793 | VariableStoreHeader->Size\r | |
794 | );\r | |
795 | ASSERT_EFI_ERROR (Status);\r | |
128ef095 | 796 | }\r |
814bae52 | 797 | \r |
8d3a5c82 | 798 | return Status;\r |
799 | }\r | |
800 | \r | |
7c80e839 | 801 | /**\r |
802 | Finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
803 | \r | |
804 | This code finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
805 | If VariableName is an empty string, then we just return the first\r | |
806 | qualified variable without comparing VariableName and VendorGuid.\r | |
9622df63 SZ |
807 | If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check\r |
808 | at runtime when searching existing variable, only VariableName and VendorGuid are compared.\r | |
809 | Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.\r | |
7c80e839 | 810 | \r |
fa0737a8 SZ |
811 | @param[in] VariableName Name of the variable to be found.\r |
812 | @param[in] VendorGuid Vendor GUID to be found.\r | |
813 | @param[out] PtrTrack VARIABLE_POINTER_TRACK structure for output,\r | |
7c80e839 | 814 | including the range searched and the target position.\r |
fa0737a8 | 815 | @param[in] Global Pointer to VARIABLE_GLOBAL structure, including\r |
7c80e839 | 816 | base of volatile variable storage area, base of\r |
817 | NV variable storage area, and a lock.\r | |
fa0737a8 | 818 | @param[in] IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r |
9622df63 | 819 | check at runtime when searching variable.\r |
7c80e839 | 820 | \r |
821 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r | |
8a2d4996 | 822 | VendorGuid is NULL.\r |
823 | @retval EFI_SUCCESS Variable successfully found.\r | |
255a3f33 | 824 | @retval EFI_NOT_FOUND Variable not found\r |
33a5a666 | 825 | \r |
7c80e839 | 826 | **/\r |
8d3a5c82 | 827 | EFI_STATUS\r |
8d3a5c82 | 828 | FindVariable (\r |
829 | IN CHAR16 *VariableName,\r | |
830 | IN EFI_GUID *VendorGuid,\r | |
831 | OUT VARIABLE_POINTER_TRACK *PtrTrack,\r | |
9622df63 SZ |
832 | IN VARIABLE_GLOBAL *Global,\r |
833 | IN BOOLEAN IgnoreRtCheck\r | |
8d3a5c82 | 834 | )\r |
8d3a5c82 | 835 | {\r |
0f7aff72 RN |
836 | EFI_STATUS Status;\r |
837 | VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r | |
838 | VARIABLE_STORE_TYPE Type;\r | |
839 | \r | |
840 | if (VariableName[0] != 0 && VendorGuid == NULL) {\r | |
841 | return EFI_INVALID_PARAMETER;\r | |
842 | }\r | |
8d3a5c82 | 843 | \r |
8d3a5c82 | 844 | //\r |
0f7aff72 | 845 | // 0: Volatile, 1: HOB, 2: Non-Volatile.\r |
36873a61 | 846 | // The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName\r |
8a2d4996 | 847 | // make use of this mapping to implement search algorithm.\r |
8d3a5c82 | 848 | //\r |
0f7aff72 RN |
849 | VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) Global->VolatileVariableBase;\r |
850 | VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) Global->HobVariableBase;\r | |
851 | VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r | |
8d3a5c82 | 852 | \r |
853 | //\r | |
0f7aff72 | 854 | // Find the variable by walk through HOB, volatile and non-volatile variable store.\r |
8d3a5c82 | 855 | //\r |
0f7aff72 RN |
856 | for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r |
857 | if (VariableStoreHeader[Type] == NULL) {\r | |
858 | continue;\r | |
859 | }\r | |
814bae52 | 860 | \r |
0f7aff72 RN |
861 | PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r |
862 | PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r | |
863 | PtrTrack->Volatile = (BOOLEAN) (Type == VariableStoreTypeVolatile);\r | |
8d3a5c82 | 864 | \r |
04401023 MK |
865 | Status = FindVariableEx (\r |
866 | VariableName,\r | |
867 | VendorGuid,\r | |
868 | IgnoreRtCheck,\r | |
869 | PtrTrack,\r | |
870 | mVariableModuleGlobal->VariableGlobal.AuthFormat\r | |
871 | );\r | |
0f7aff72 RN |
872 | if (!EFI_ERROR (Status)) {\r |
873 | return Status;\r | |
814bae52 | 874 | }\r |
8d3a5c82 | 875 | }\r |
8d3a5c82 | 876 | return EFI_NOT_FOUND;\r |
877 | }\r | |
878 | \r | |
7c80e839 | 879 | /**\r |
72399dae | 880 | Get index from supported language codes according to language string.\r |
881 | \r | |
882 | This code is used to get corresponding index in supported language codes. It can handle\r | |
0254efc0 | 883 | RFC4646 and ISO639 language tags.\r |
72399dae | 884 | In ISO639 language tags, take 3-characters as a delimitation to find matched string and calculate the index.\r |
0254efc0 | 885 | In RFC4646 language tags, take semicolon as a delimitation to find matched string and calculate the index.\r |
72399dae | 886 | \r |
887 | For example:\r | |
888 | SupportedLang = "engfraengfra"\r | |
889 | Lang = "eng"\r | |
890 | Iso639Language = TRUE\r | |
891 | The return value is "0".\r | |
892 | Another example:\r | |
893 | SupportedLang = "en;fr;en-US;fr-FR"\r | |
894 | Lang = "fr-FR"\r | |
895 | Iso639Language = FALSE\r | |
896 | The return value is "3".\r | |
897 | \r | |
898 | @param SupportedLang Platform supported language codes.\r | |
899 | @param Lang Configured language.\r | |
0254efc0 | 900 | @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r |
72399dae | 901 | \r |
8a2d4996 | 902 | @retval The index of language in the language codes.\r |
8d3a5c82 | 903 | \r |
7c80e839 | 904 | **/\r |
72399dae | 905 | UINTN\r |
72399dae | 906 | GetIndexFromSupportedLangCodes(\r |
907 | IN CHAR8 *SupportedLang,\r | |
908 | IN CHAR8 *Lang,\r | |
909 | IN BOOLEAN Iso639Language\r | |
fa0737a8 | 910 | )\r |
8d3a5c82 | 911 | {\r |
72399dae | 912 | UINTN Index;\r |
255a3f33 RN |
913 | UINTN CompareLength;\r |
914 | UINTN LanguageLength;\r | |
72399dae | 915 | \r |
72399dae | 916 | if (Iso639Language) {\r |
255a3f33 | 917 | CompareLength = ISO_639_2_ENTRY_SIZE;\r |
72399dae | 918 | for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {\r |
919 | if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {\r | |
920 | //\r | |
921 | // Successfully find the index of Lang string in SupportedLang string.\r | |
922 | //\r | |
923 | Index = Index / CompareLength;\r | |
924 | return Index;\r | |
925 | }\r | |
926 | }\r | |
927 | ASSERT (FALSE);\r | |
928 | return 0;\r | |
929 | } else {\r | |
930 | //\r | |
0254efc0 | 931 | // Compare RFC4646 language code\r |
72399dae | 932 | //\r |
255a3f33 RN |
933 | Index = 0;\r |
934 | for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);\r | |
935 | \r | |
936 | for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang += CompareLength) {\r | |
72399dae | 937 | //\r |
255a3f33 | 938 | // Skip ';' characters in SupportedLang\r |
72399dae | 939 | //\r |
255a3f33 RN |
940 | for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);\r |
941 | //\r | |
942 | // Determine the length of the next language code in SupportedLang\r | |
943 | //\r | |
944 | for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);\r | |
fa0737a8 SZ |
945 | \r |
946 | if ((CompareLength == LanguageLength) &&\r | |
255a3f33 | 947 | (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {\r |
72399dae | 948 | //\r |
949 | // Successfully find the index of Lang string in SupportedLang string.\r | |
950 | //\r | |
951 | return Index;\r | |
952 | }\r | |
72399dae | 953 | }\r |
954 | ASSERT (FALSE);\r | |
955 | return 0;\r | |
8d3a5c82 | 956 | }\r |
72399dae | 957 | }\r |
33a5a666 | 958 | \r |
72399dae | 959 | /**\r |
960 | Get language string from supported language codes according to index.\r | |
961 | \r | |
8a2d4996 | 962 | This code is used to get corresponding language strings in supported language codes. It can handle\r |
0254efc0 | 963 | RFC4646 and ISO639 language tags.\r |
72399dae | 964 | In ISO639 language tags, take 3-characters as a delimitation. Find language string according to the index.\r |
0254efc0 | 965 | In RFC4646 language tags, take semicolon as a delimitation. Find language string according to the index.\r |
72399dae | 966 | \r |
967 | For example:\r | |
968 | SupportedLang = "engfraengfra"\r | |
969 | Index = "1"\r | |
970 | Iso639Language = TRUE\r | |
971 | The return value is "fra".\r | |
972 | Another example:\r | |
973 | SupportedLang = "en;fr;en-US;fr-FR"\r | |
974 | Index = "1"\r | |
975 | Iso639Language = FALSE\r | |
976 | The return value is "fr".\r | |
977 | \r | |
978 | @param SupportedLang Platform supported language codes.\r | |
8a2d4996 | 979 | @param Index The index in supported language codes.\r |
0254efc0 | 980 | @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r |
72399dae | 981 | \r |
8a2d4996 | 982 | @retval The language string in the language codes.\r |
8d3a5c82 | 983 | \r |
72399dae | 984 | **/\r |
985 | CHAR8 *\r | |
72399dae | 986 | GetLangFromSupportedLangCodes (\r |
987 | IN CHAR8 *SupportedLang,\r | |
988 | IN UINTN Index,\r | |
989 | IN BOOLEAN Iso639Language\r | |
990 | )\r | |
991 | {\r | |
992 | UINTN SubIndex;\r | |
255a3f33 | 993 | UINTN CompareLength;\r |
72399dae | 994 | CHAR8 *Supported;\r |
8d3a5c82 | 995 | \r |
72399dae | 996 | SubIndex = 0;\r |
997 | Supported = SupportedLang;\r | |
998 | if (Iso639Language) {\r | |
999 | //\r | |
8a2d4996 | 1000 | // According to the index of Lang string in SupportedLang string to get the language.\r |
1001 | // This code will be invoked in RUNTIME, therefore there is not a memory allocate/free operation.\r | |
72399dae | 1002 | // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r |
1003 | //\r | |
255a3f33 RN |
1004 | CompareLength = ISO_639_2_ENTRY_SIZE;\r |
1005 | mVariableModuleGlobal->Lang[CompareLength] = '\0';\r | |
72399dae | 1006 | return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index * CompareLength, CompareLength);\r |
f68af18e | 1007 | \r |
8d3a5c82 | 1008 | } else {\r |
72399dae | 1009 | while (TRUE) {\r |
1010 | //\r | |
8a2d4996 | 1011 | // Take semicolon as delimitation, sequentially traverse supported language codes.\r |
72399dae | 1012 | //\r |
1013 | for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {\r | |
1014 | Supported++;\r | |
1015 | }\r | |
1016 | if ((*Supported == '\0') && (SubIndex != Index)) {\r | |
1017 | //\r | |
1018 | // Have completed the traverse, but not find corrsponding string.\r | |
1019 | // This case is not allowed to happen.\r | |
1020 | //\r | |
1021 | ASSERT(FALSE);\r | |
1022 | return NULL;\r | |
1023 | }\r | |
1024 | if (SubIndex == Index) {\r | |
1025 | //\r | |
8a2d4996 | 1026 | // According to the index of Lang string in SupportedLang string to get the language.\r |
72399dae | 1027 | // As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.\r |
1028 | // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r | |
1029 | //\r | |
255a3f33 | 1030 | mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';\r |
72399dae | 1031 | return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);\r |
1032 | }\r | |
1033 | SubIndex++;\r | |
8a2d4996 | 1034 | \r |
5c033766 RN |
1035 | //\r |
1036 | // Skip ';' characters in Supported\r | |
1037 | //\r | |
1038 | for (; *Supported != '\0' && *Supported == ';'; Supported++);\r | |
72399dae | 1039 | }\r |
8d3a5c82 | 1040 | }\r |
8d3a5c82 | 1041 | }\r |
1042 | \r | |
255a3f33 | 1043 | /**\r |
fa0737a8 SZ |
1044 | Returns a pointer to an allocated buffer that contains the best matching language\r |
1045 | from a set of supported languages.\r | |
1046 | \r | |
1047 | This function supports both ISO 639-2 and RFC 4646 language codes, but language\r | |
255a3f33 RN |
1048 | code types may not be mixed in a single call to this function. This function\r |
1049 | supports a variable argument list that allows the caller to pass in a prioritized\r | |
1050 | list of language codes to test against all the language codes in SupportedLanguages.\r | |
1051 | \r | |
1052 | If SupportedLanguages is NULL, then ASSERT().\r | |
1053 | \r | |
1054 | @param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that\r | |
fa0737a8 | 1055 | contains a set of language codes in the format\r |
255a3f33 | 1056 | specified by Iso639Language.\r |
051bf6e0 LG |
1057 | @param[in] Iso639Language If not zero, then all language codes are assumed to be\r |
1058 | in ISO 639-2 format. If zero, then all language\r | |
255a3f33 | 1059 | codes are assumed to be in RFC 4646 language format\r |
fa0737a8 | 1060 | @param[in] ... A variable argument list that contains pointers to\r |
255a3f33 RN |
1061 | Null-terminated ASCII strings that contain one or more\r |
1062 | language codes in the format specified by Iso639Language.\r | |
1063 | The first language code from each of these language\r | |
1064 | code lists is used to determine if it is an exact or\r | |
fa0737a8 | 1065 | close match to any of the language codes in\r |
255a3f33 RN |
1066 | SupportedLanguages. Close matches only apply to RFC 4646\r |
1067 | language codes, and the matching algorithm from RFC 4647\r | |
fa0737a8 | 1068 | is used to determine if a close match is present. If\r |
255a3f33 RN |
1069 | an exact or close match is found, then the matching\r |
1070 | language code from SupportedLanguages is returned. If\r | |
1071 | no matches are found, then the next variable argument\r | |
fa0737a8 | 1072 | parameter is evaluated. The variable argument list\r |
255a3f33 RN |
1073 | is terminated by a NULL.\r |
1074 | \r | |
1075 | @retval NULL The best matching language could not be found in SupportedLanguages.\r | |
fa0737a8 | 1076 | @retval NULL There are not enough resources available to return the best matching\r |
255a3f33 | 1077 | language.\r |
fa0737a8 | 1078 | @retval Other A pointer to a Null-terminated ASCII string that is the best matching\r |
255a3f33 RN |
1079 | language in SupportedLanguages.\r |
1080 | \r | |
1081 | **/\r | |
1082 | CHAR8 *\r | |
e1adae60 | 1083 | EFIAPI\r |
255a3f33 | 1084 | VariableGetBestLanguage (\r |
fa0737a8 | 1085 | IN CONST CHAR8 *SupportedLanguages,\r |
180ac200 | 1086 | IN UINTN Iso639Language,\r |
255a3f33 RN |
1087 | ...\r |
1088 | )\r | |
1089 | {\r | |
1090 | VA_LIST Args;\r | |
1091 | CHAR8 *Language;\r | |
1092 | UINTN CompareLength;\r | |
1093 | UINTN LanguageLength;\r | |
1094 | CONST CHAR8 *Supported;\r | |
1095 | CHAR8 *Buffer;\r | |
1096 | \r | |
fa0737a8 SZ |
1097 | if (SupportedLanguages == NULL) {\r |
1098 | return NULL;\r | |
1099 | }\r | |
255a3f33 RN |
1100 | \r |
1101 | VA_START (Args, Iso639Language);\r | |
1102 | while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {\r | |
1103 | //\r | |
1104 | // Default to ISO 639-2 mode\r | |
1105 | //\r | |
1106 | CompareLength = 3;\r | |
1107 | LanguageLength = MIN (3, AsciiStrLen (Language));\r | |
1108 | \r | |
1109 | //\r | |
1110 | // If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language\r | |
1111 | //\r | |
051bf6e0 | 1112 | if (Iso639Language == 0) {\r |
255a3f33 RN |
1113 | for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);\r |
1114 | }\r | |
1115 | \r | |
1116 | //\r | |
1117 | // Trim back the length of Language used until it is empty\r | |
1118 | //\r | |
1119 | while (LanguageLength > 0) {\r | |
1120 | //\r | |
1121 | // Loop through all language codes in SupportedLanguages\r | |
1122 | //\r | |
1123 | for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {\r | |
1124 | //\r | |
1125 | // In RFC 4646 mode, then Loop through all language codes in SupportedLanguages\r | |
1126 | //\r | |
051bf6e0 | 1127 | if (Iso639Language == 0) {\r |
255a3f33 RN |
1128 | //\r |
1129 | // Skip ';' characters in Supported\r | |
1130 | //\r | |
1131 | for (; *Supported != '\0' && *Supported == ';'; Supported++);\r | |
1132 | //\r | |
1133 | // Determine the length of the next language code in Supported\r | |
1134 | //\r | |
1135 | for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);\r | |
1136 | //\r | |
1137 | // If Language is longer than the Supported, then skip to the next language\r | |
1138 | //\r | |
1139 | if (LanguageLength > CompareLength) {\r | |
1140 | continue;\r | |
1141 | }\r | |
1142 | }\r | |
1143 | //\r | |
1144 | // See if the first LanguageLength characters in Supported match Language\r | |
1145 | //\r | |
1146 | if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {\r | |
1147 | VA_END (Args);\r | |
1148 | \r | |
051bf6e0 | 1149 | Buffer = (Iso639Language != 0) ? mVariableModuleGlobal->Lang : mVariableModuleGlobal->PlatformLang;\r |
255a3f33 RN |
1150 | Buffer[CompareLength] = '\0';\r |
1151 | return CopyMem (Buffer, Supported, CompareLength);\r | |
1152 | }\r | |
1153 | }\r | |
1154 | \r | |
051bf6e0 | 1155 | if (Iso639Language != 0) {\r |
255a3f33 RN |
1156 | //\r |
1157 | // If ISO 639 mode, then each language can only be tested once\r | |
1158 | //\r | |
1159 | LanguageLength = 0;\r | |
1160 | } else {\r | |
1161 | //\r | |
fa0737a8 | 1162 | // If RFC 4646 mode, then trim Language from the right to the next '-' character\r |
255a3f33 RN |
1163 | //\r |
1164 | for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);\r | |
1165 | }\r | |
1166 | }\r | |
1167 | }\r | |
1168 | VA_END (Args);\r | |
1169 | \r | |
1170 | //\r | |
fa0737a8 | 1171 | // No matches were found\r |
255a3f33 RN |
1172 | //\r |
1173 | return NULL;\r | |
1174 | }\r | |
1175 | \r | |
b2bd493e SZ |
1176 | /**\r |
1177 | This function is to check if the remaining variable space is enough to set\r | |
1178 | all Variables from argument list successfully. The purpose of the check\r | |
1179 | is to keep the consistency of the Variables to be in variable storage.\r | |
1180 | \r | |
1181 | Note: Variables are assumed to be in same storage.\r | |
1182 | The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r | |
1183 | so follow the argument sequence to check the Variables.\r | |
1184 | \r | |
1185 | @param[in] Attributes Variable attributes for Variable entries.\r | |
fa0737a8 SZ |
1186 | @param[in] Marker VA_LIST style variable argument list.\r |
1187 | The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r | |
1188 | A NULL terminates the list. The VariableSize of\r | |
9a12e582 DG |
1189 | VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r |
1190 | It will be changed to variable total size as output.\r | |
b2bd493e SZ |
1191 | \r |
1192 | @retval TRUE Have enough variable space to set the Variables successfully.\r | |
1193 | @retval FALSE No enough variable space to set the Variables successfully.\r | |
1194 | \r | |
1195 | **/\r | |
1196 | BOOLEAN\r | |
1197 | EFIAPI\r | |
fa0737a8 | 1198 | CheckRemainingSpaceForConsistencyInternal (\r |
b2bd493e | 1199 | IN UINT32 Attributes,\r |
fa0737a8 | 1200 | IN VA_LIST Marker\r |
b2bd493e SZ |
1201 | )\r |
1202 | {\r | |
1203 | EFI_STATUS Status;\r | |
1204 | VA_LIST Args;\r | |
1205 | VARIABLE_ENTRY_CONSISTENCY *VariableEntry;\r | |
1206 | UINT64 MaximumVariableStorageSize;\r | |
1207 | UINT64 RemainingVariableStorageSize;\r | |
1208 | UINT64 MaximumVariableSize;\r | |
1209 | UINTN TotalNeededSize;\r | |
1210 | UINTN OriginalVarSize;\r | |
1211 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
1212 | VARIABLE_POINTER_TRACK VariablePtrTrack;\r | |
1213 | VARIABLE_HEADER *NextVariable;\r | |
9a12e582 DG |
1214 | UINTN VarNameSize;\r |
1215 | UINTN VarDataSize;\r | |
b2bd493e SZ |
1216 | \r |
1217 | //\r | |
1218 | // Non-Volatile related.\r | |
1219 | //\r | |
1220 | VariableStoreHeader = mNvVariableCache;\r | |
1221 | \r | |
1222 | Status = VariableServiceQueryVariableInfoInternal (\r | |
1223 | Attributes,\r | |
1224 | &MaximumVariableStorageSize,\r | |
1225 | &RemainingVariableStorageSize,\r | |
1226 | &MaximumVariableSize\r | |
1227 | );\r | |
1228 | ASSERT_EFI_ERROR (Status);\r | |
1229 | \r | |
1230 | TotalNeededSize = 0;\r | |
b7789dc6 | 1231 | VA_COPY (Args, Marker);\r |
b2bd493e SZ |
1232 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r |
1233 | while (VariableEntry != NULL) {\r | |
9a12e582 DG |
1234 | //\r |
1235 | // Calculate variable total size.\r | |
1236 | //\r | |
1237 | VarNameSize = StrSize (VariableEntry->Name);\r | |
1238 | VarNameSize += GET_PAD_SIZE (VarNameSize);\r | |
1239 | VarDataSize = VariableEntry->VariableSize;\r | |
1240 | VarDataSize += GET_PAD_SIZE (VarDataSize);\r | |
04401023 MK |
1241 | VariableEntry->VariableSize = HEADER_ALIGN (\r |
1242 | GetVariableHeaderSize (\r | |
1243 | mVariableModuleGlobal->VariableGlobal.AuthFormat\r | |
1244 | ) + VarNameSize + VarDataSize\r | |
1245 | );\r | |
9a12e582 | 1246 | \r |
b2bd493e SZ |
1247 | TotalNeededSize += VariableEntry->VariableSize;\r |
1248 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r | |
1249 | }\r | |
415700ec | 1250 | VA_END (Args);\r |
b2bd493e SZ |
1251 | \r |
1252 | if (RemainingVariableStorageSize >= TotalNeededSize) {\r | |
1253 | //\r | |
1254 | // Already have enough space.\r | |
1255 | //\r | |
1256 | return TRUE;\r | |
1257 | } else if (AtRuntime ()) {\r | |
1258 | //\r | |
1259 | // At runtime, no reclaim.\r | |
1260 | // The original variable space of Variables can't be reused.\r | |
1261 | //\r | |
1262 | return FALSE;\r | |
1263 | }\r | |
1264 | \r | |
b7789dc6 | 1265 | VA_COPY (Args, Marker);\r |
b2bd493e SZ |
1266 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r |
1267 | while (VariableEntry != NULL) {\r | |
1268 | //\r | |
1269 | // Check if Variable[Index] has been present and get its size.\r | |
1270 | //\r | |
1271 | OriginalVarSize = 0;\r | |
1272 | VariablePtrTrack.StartPtr = GetStartPointer (VariableStoreHeader);\r | |
1273 | VariablePtrTrack.EndPtr = GetEndPointer (VariableStoreHeader);\r | |
1274 | Status = FindVariableEx (\r | |
1275 | VariableEntry->Name,\r | |
1276 | VariableEntry->Guid,\r | |
1277 | FALSE,\r | |
04401023 MK |
1278 | &VariablePtrTrack,\r |
1279 | mVariableModuleGlobal->VariableGlobal.AuthFormat\r | |
b2bd493e SZ |
1280 | );\r |
1281 | if (!EFI_ERROR (Status)) {\r | |
1282 | //\r | |
1283 | // Get size of Variable[Index].\r | |
1284 | //\r | |
04401023 | 1285 | NextVariable = GetNextVariablePtr (VariablePtrTrack.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
b2bd493e SZ |
1286 | OriginalVarSize = (UINTN) NextVariable - (UINTN) VariablePtrTrack.CurrPtr;\r |
1287 | //\r | |
1288 | // Add the original size of Variable[Index] to remaining variable storage size.\r | |
1289 | //\r | |
1290 | RemainingVariableStorageSize += OriginalVarSize;\r | |
1291 | }\r | |
1292 | if (VariableEntry->VariableSize > RemainingVariableStorageSize) {\r | |
1293 | //\r | |
1294 | // No enough space for Variable[Index].\r | |
1295 | //\r | |
a0460be7 | 1296 | VA_END (Args);\r |
b2bd493e SZ |
1297 | return FALSE;\r |
1298 | }\r | |
1299 | //\r | |
1300 | // Sub the (new) size of Variable[Index] from remaining variable storage size.\r | |
1301 | //\r | |
1302 | RemainingVariableStorageSize -= VariableEntry->VariableSize;\r | |
1303 | VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r | |
1304 | }\r | |
415700ec | 1305 | VA_END (Args);\r |
b2bd493e SZ |
1306 | \r |
1307 | return TRUE;\r | |
1308 | }\r | |
1309 | \r | |
fa0737a8 SZ |
1310 | /**\r |
1311 | This function is to check if the remaining variable space is enough to set\r | |
1312 | all Variables from argument list successfully. The purpose of the check\r | |
1313 | is to keep the consistency of the Variables to be in variable storage.\r | |
1314 | \r | |
1315 | Note: Variables are assumed to be in same storage.\r | |
1316 | The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r | |
1317 | so follow the argument sequence to check the Variables.\r | |
1318 | \r | |
1319 | @param[in] Attributes Variable attributes for Variable entries.\r | |
1320 | @param ... The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r | |
1321 | A NULL terminates the list. The VariableSize of\r | |
1322 | VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r | |
1323 | It will be changed to variable total size as output.\r | |
1324 | \r | |
1325 | @retval TRUE Have enough variable space to set the Variables successfully.\r | |
1326 | @retval FALSE No enough variable space to set the Variables successfully.\r | |
1327 | \r | |
1328 | **/\r | |
1329 | BOOLEAN\r | |
1330 | EFIAPI\r | |
1331 | CheckRemainingSpaceForConsistency (\r | |
1332 | IN UINT32 Attributes,\r | |
1333 | ...\r | |
1334 | )\r | |
1335 | {\r | |
1336 | VA_LIST Marker;\r | |
1337 | BOOLEAN Return;\r | |
1338 | \r | |
1339 | VA_START (Marker, Attributes);\r | |
1340 | \r | |
1341 | Return = CheckRemainingSpaceForConsistencyInternal (Attributes, Marker);\r | |
1342 | \r | |
1343 | VA_END (Marker);\r | |
1344 | \r | |
1345 | return Return;\r | |
1346 | }\r | |
1347 | \r | |
72399dae | 1348 | /**\r |
1349 | Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.\r | |
052ad7e1 | 1350 | \r |
72399dae | 1351 | When setting Lang/LangCodes, simultaneously update PlatformLang/PlatformLangCodes.\r |
052ad7e1 | 1352 | \r |
72399dae | 1353 | According to UEFI spec, PlatformLangCodes/LangCodes are only set once in firmware initialization,\r |
1354 | and are read-only. Therefore, in variable driver, only store the original value for other use.\r | |
8d3a5c82 | 1355 | \r |
8a2d4996 | 1356 | @param[in] VariableName Name of variable.\r |
8d3a5c82 | 1357 | \r |
8a2d4996 | 1358 | @param[in] Data Variable data.\r |
8d3a5c82 | 1359 | \r |
8a2d4996 | 1360 | @param[in] DataSize Size of data. 0 means delete.\r |
72399dae | 1361 | \r |
9bc5dabb SZ |
1362 | @retval EFI_SUCCESS The update operation is successful or ignored.\r |
1363 | @retval EFI_WRITE_PROTECTED Update PlatformLangCodes/LangCodes at runtime.\r | |
1364 | @retval EFI_OUT_OF_RESOURCES No enough variable space to do the update operation.\r | |
1365 | @retval Others Other errors happened during the update operation.\r | |
1366 | \r | |
7c80e839 | 1367 | **/\r |
9bc5dabb | 1368 | EFI_STATUS\r |
d6550260 | 1369 | AutoUpdateLangVariable (\r |
72399dae | 1370 | IN CHAR16 *VariableName,\r |
1371 | IN VOID *Data,\r | |
1372 | IN UINTN DataSize\r | |
052ad7e1 | 1373 | )\r |
8d3a5c82 | 1374 | {\r |
255a3f33 RN |
1375 | EFI_STATUS Status;\r |
1376 | CHAR8 *BestPlatformLang;\r | |
1377 | CHAR8 *BestLang;\r | |
1378 | UINTN Index;\r | |
1379 | UINT32 Attributes;\r | |
72399dae | 1380 | VARIABLE_POINTER_TRACK Variable;\r |
255a3f33 | 1381 | BOOLEAN SetLanguageCodes;\r |
b2bd493e | 1382 | VARIABLE_ENTRY_CONSISTENCY VariableEntry[2];\r |
8d3a5c82 | 1383 | \r |
72399dae | 1384 | //\r |
255a3f33 | 1385 | // Don't do updates for delete operation\r |
72399dae | 1386 | //\r |
255a3f33 | 1387 | if (DataSize == 0) {\r |
9bc5dabb | 1388 | return EFI_SUCCESS;\r |
255a3f33 RN |
1389 | }\r |
1390 | \r | |
1391 | SetLanguageCodes = FALSE;\r | |
8d3a5c82 | 1392 | \r |
6675a21f | 1393 | if (StrCmp (VariableName, EFI_PLATFORM_LANG_CODES_VARIABLE_NAME) == 0) {\r |
255a3f33 RN |
1394 | //\r |
1395 | // PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r | |
1396 | //\r | |
8a2d4996 | 1397 | if (AtRuntime ()) {\r |
9bc5dabb | 1398 | return EFI_WRITE_PROTECTED;\r |
255a3f33 RN |
1399 | }\r |
1400 | \r | |
1401 | SetLanguageCodes = TRUE;\r | |
1402 | \r | |
72399dae | 1403 | //\r |
1404 | // According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only\r | |
1405 | // Therefore, in variable driver, only store the original value for other use.\r | |
1406 | //\r | |
255a3f33 RN |
1407 | if (mVariableModuleGlobal->PlatformLangCodes != NULL) {\r |
1408 | FreePool (mVariableModuleGlobal->PlatformLangCodes);\r | |
1409 | }\r | |
1410 | mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r | |
1411 | ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);\r | |
1412 | \r | |
72399dae | 1413 | //\r |
fa0737a8 | 1414 | // PlatformLang holds a single language from PlatformLangCodes,\r |
255a3f33 | 1415 | // so the size of PlatformLangCodes is enough for the PlatformLang.\r |
72399dae | 1416 | //\r |
255a3f33 RN |
1417 | if (mVariableModuleGlobal->PlatformLang != NULL) {\r |
1418 | FreePool (mVariableModuleGlobal->PlatformLang);\r | |
1419 | }\r | |
1420 | mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);\r | |
1421 | ASSERT (mVariableModuleGlobal->PlatformLang != NULL);\r | |
fdb7765f | 1422 | \r |
6675a21f | 1423 | } else if (StrCmp (VariableName, EFI_LANG_CODES_VARIABLE_NAME) == 0) {\r |
72399dae | 1424 | //\r |
255a3f33 | 1425 | // LangCodes is a volatile variable, so it can not be updated at runtime.\r |
72399dae | 1426 | //\r |
8a2d4996 | 1427 | if (AtRuntime ()) {\r |
9bc5dabb | 1428 | return EFI_WRITE_PROTECTED;\r |
255a3f33 RN |
1429 | }\r |
1430 | \r | |
1431 | SetLanguageCodes = TRUE;\r | |
8d3a5c82 | 1432 | \r |
8d3a5c82 | 1433 | //\r |
255a3f33 RN |
1434 | // According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only\r |
1435 | // Therefore, in variable driver, only store the original value for other use.\r | |
8d3a5c82 | 1436 | //\r |
255a3f33 RN |
1437 | if (mVariableModuleGlobal->LangCodes != NULL) {\r |
1438 | FreePool (mVariableModuleGlobal->LangCodes);\r | |
1439 | }\r | |
1440 | mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r | |
1441 | ASSERT (mVariableModuleGlobal->LangCodes != NULL);\r | |
1442 | }\r | |
8d3a5c82 | 1443 | \r |
fa0737a8 | 1444 | if (SetLanguageCodes\r |
255a3f33 RN |
1445 | && (mVariableModuleGlobal->PlatformLangCodes != NULL)\r |
1446 | && (mVariableModuleGlobal->LangCodes != NULL)) {\r | |
8d3a5c82 | 1447 | //\r |
255a3f33 RN |
1448 | // Update Lang if PlatformLang is already set\r |
1449 | // Update PlatformLang if Lang is already set\r | |
8d3a5c82 | 1450 | //\r |
6675a21f | 1451 | Status = FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
255a3f33 RN |
1452 | if (!EFI_ERROR (Status)) {\r |
1453 | //\r | |
1454 | // Update Lang\r | |
1455 | //\r | |
6675a21f | 1456 | VariableName = EFI_PLATFORM_LANG_VARIABLE_NAME;\r |
04401023 MK |
1457 | Data = GetVariableDataPtr (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
1458 | DataSize = DataSizeOfVariable (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
255a3f33 | 1459 | } else {\r |
6675a21f | 1460 | Status = FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
255a3f33 RN |
1461 | if (!EFI_ERROR (Status)) {\r |
1462 | //\r | |
1463 | // Update PlatformLang\r | |
1464 | //\r | |
6675a21f | 1465 | VariableName = EFI_LANG_VARIABLE_NAME;\r |
04401023 MK |
1466 | Data = GetVariableDataPtr (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
1467 | DataSize = DataSizeOfVariable (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
255a3f33 RN |
1468 | } else {\r |
1469 | //\r | |
1470 | // Neither PlatformLang nor Lang is set, directly return\r | |
1471 | //\r | |
9bc5dabb | 1472 | return EFI_SUCCESS;\r |
255a3f33 RN |
1473 | }\r |
1474 | }\r | |
1475 | }\r | |
9bc5dabb SZ |
1476 | \r |
1477 | Status = EFI_SUCCESS;\r | |
1478 | \r | |
255a3f33 RN |
1479 | //\r |
1480 | // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.\r | |
1481 | //\r | |
1482 | Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r | |
8d3a5c82 | 1483 | \r |
6675a21f | 1484 | if (StrCmp (VariableName, EFI_PLATFORM_LANG_VARIABLE_NAME) == 0) {\r |
8d3a5c82 | 1485 | //\r |
255a3f33 | 1486 | // Update Lang when PlatformLangCodes/LangCodes were set.\r |
8d3a5c82 | 1487 | //\r |
255a3f33 RN |
1488 | if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r |
1489 | //\r | |
1490 | // When setting PlatformLang, firstly get most matched language string from supported language codes.\r | |
1491 | //\r | |
1492 | BestPlatformLang = VariableGetBestLanguage (mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);\r | |
1493 | if (BestPlatformLang != NULL) {\r | |
1494 | //\r | |
1495 | // Get the corresponding index in language codes.\r | |
1496 | //\r | |
1497 | Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, BestPlatformLang, FALSE);\r | |
fdb7765f | 1498 | \r |
255a3f33 RN |
1499 | //\r |
1500 | // Get the corresponding ISO639 language tag according to RFC4646 language tag.\r | |
1501 | //\r | |
1502 | BestLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, Index, TRUE);\r | |
8d3a5c82 | 1503 | \r |
255a3f33 | 1504 | //\r |
9a12e582 | 1505 | // Check the variable space for both Lang and PlatformLang variable.\r |
b2bd493e | 1506 | //\r |
9a12e582 | 1507 | VariableEntry[0].VariableSize = ISO_639_2_ENTRY_SIZE + 1;\r |
b2bd493e SZ |
1508 | VariableEntry[0].Guid = &gEfiGlobalVariableGuid;\r |
1509 | VariableEntry[0].Name = EFI_LANG_VARIABLE_NAME;\r | |
fa0737a8 | 1510 | \r |
9a12e582 | 1511 | VariableEntry[1].VariableSize = AsciiStrSize (BestPlatformLang);\r |
b2bd493e SZ |
1512 | VariableEntry[1].Guid = &gEfiGlobalVariableGuid;\r |
1513 | VariableEntry[1].Name = EFI_PLATFORM_LANG_VARIABLE_NAME;\r | |
1514 | if (!CheckRemainingSpaceForConsistency (VARIABLE_ATTRIBUTE_NV_BS_RT, &VariableEntry[0], &VariableEntry[1], NULL)) {\r | |
1515 | //\r | |
1516 | // No enough variable space to set both Lang and PlatformLang successfully.\r | |
1517 | //\r | |
1518 | Status = EFI_OUT_OF_RESOURCES;\r | |
1519 | } else {\r | |
1520 | //\r | |
1521 | // Successfully convert PlatformLang to Lang, and set the BestLang value into Lang variable simultaneously.\r | |
1522 | //\r | |
1523 | FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
8d3a5c82 | 1524 | \r |
b2bd493e | 1525 | Status = UpdateVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestLang,\r |
fa0737a8 | 1526 | ISO_639_2_ENTRY_SIZE + 1, Attributes, 0, 0, &Variable, NULL);\r |
b2bd493e | 1527 | }\r |
8d3a5c82 | 1528 | \r |
b2bd493e | 1529 | DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a Status: %r\n", BestPlatformLang, BestLang, Status));\r |
255a3f33 RN |
1530 | }\r |
1531 | }\r | |
72399dae | 1532 | \r |
6675a21f | 1533 | } else if (StrCmp (VariableName, EFI_LANG_VARIABLE_NAME) == 0) {\r |
72399dae | 1534 | //\r |
255a3f33 | 1535 | // Update PlatformLang when PlatformLangCodes/LangCodes were set.\r |
72399dae | 1536 | //\r |
255a3f33 RN |
1537 | if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r |
1538 | //\r | |
1539 | // When setting Lang, firstly get most matched language string from supported language codes.\r | |
1540 | //\r | |
1541 | BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);\r | |
1542 | if (BestLang != NULL) {\r | |
1543 | //\r | |
1544 | // Get the corresponding index in language codes.\r | |
1545 | //\r | |
1546 | Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, BestLang, TRUE);\r | |
72399dae | 1547 | \r |
255a3f33 RN |
1548 | //\r |
1549 | // Get the corresponding RFC4646 language tag according to ISO639 language tag.\r | |
1550 | //\r | |
1551 | BestPlatformLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, Index, FALSE);\r | |
1552 | \r | |
1553 | //\r | |
9a12e582 | 1554 | // Check the variable space for both PlatformLang and Lang variable.\r |
b2bd493e | 1555 | //\r |
9a12e582 | 1556 | VariableEntry[0].VariableSize = AsciiStrSize (BestPlatformLang);\r |
b2bd493e SZ |
1557 | VariableEntry[0].Guid = &gEfiGlobalVariableGuid;\r |
1558 | VariableEntry[0].Name = EFI_PLATFORM_LANG_VARIABLE_NAME;\r | |
9a12e582 DG |
1559 | \r |
1560 | VariableEntry[1].VariableSize = ISO_639_2_ENTRY_SIZE + 1;\r | |
b2bd493e SZ |
1561 | VariableEntry[1].Guid = &gEfiGlobalVariableGuid;\r |
1562 | VariableEntry[1].Name = EFI_LANG_VARIABLE_NAME;\r | |
1563 | if (!CheckRemainingSpaceForConsistency (VARIABLE_ATTRIBUTE_NV_BS_RT, &VariableEntry[0], &VariableEntry[1], NULL)) {\r | |
1564 | //\r | |
1565 | // No enough variable space to set both PlatformLang and Lang successfully.\r | |
1566 | //\r | |
1567 | Status = EFI_OUT_OF_RESOURCES;\r | |
1568 | } else {\r | |
1569 | //\r | |
1570 | // Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.\r | |
1571 | //\r | |
1572 | FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r | |
72399dae | 1573 | \r |
fa0737a8 SZ |
1574 | Status = UpdateVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestPlatformLang,\r |
1575 | AsciiStrSize (BestPlatformLang), Attributes, 0, 0, &Variable, NULL);\r | |
b2bd493e | 1576 | }\r |
72399dae | 1577 | \r |
9bc5dabb | 1578 | DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a Status: %r\n", BestLang, BestPlatformLang, Status));\r |
255a3f33 RN |
1579 | }\r |
1580 | }\r | |
72399dae | 1581 | }\r |
9bc5dabb | 1582 | \r |
b2bd493e SZ |
1583 | if (SetLanguageCodes) {\r |
1584 | //\r | |
1585 | // Continue to set PlatformLangCodes or LangCodes.\r | |
1586 | //\r | |
1587 | return EFI_SUCCESS;\r | |
1588 | } else {\r | |
1589 | return Status;\r | |
1590 | }\r | |
8d3a5c82 | 1591 | }\r |
1592 | \r | |
fa0737a8 SZ |
1593 | /**\r |
1594 | Update the variable region with Variable information. If EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS is set,\r | |
1595 | index of associated public key is needed.\r | |
052ad7e1 | 1596 | \r |
8a2d4996 | 1597 | @param[in] VariableName Name of variable.\r |
1598 | @param[in] VendorGuid Guid of variable.\r | |
1599 | @param[in] Data Variable data.\r | |
1600 | @param[in] DataSize Size of data. 0 means delete.\r | |
fa0737a8 SZ |
1601 | @param[in] Attributes Attributes of the variable.\r |
1602 | @param[in] KeyIndex Index of associated public key.\r | |
1603 | @param[in] MonotonicCount Value of associated monotonic count.\r | |
23b06935 | 1604 | @param[in, out] CacheVariable The variable information which is used to keep track of variable usage.\r |
fa0737a8 SZ |
1605 | @param[in] TimeStamp Value of associated TimeStamp.\r |
1606 | \r | |
72399dae | 1607 | @retval EFI_SUCCESS The update operation is success.\r |
72399dae | 1608 | @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other data into this region.\r |
8d3a5c82 | 1609 | \r |
7c80e839 | 1610 | **/\r |
052ad7e1 | 1611 | EFI_STATUS\r |
72399dae | 1612 | UpdateVariable (\r |
8a2d4996 | 1613 | IN CHAR16 *VariableName,\r |
1614 | IN EFI_GUID *VendorGuid,\r | |
1615 | IN VOID *Data,\r | |
1616 | IN UINTN DataSize,\r | |
1617 | IN UINT32 Attributes OPTIONAL,\r | |
fa0737a8 SZ |
1618 | IN UINT32 KeyIndex OPTIONAL,\r |
1619 | IN UINT64 MonotonicCount OPTIONAL,\r | |
1620 | IN OUT VARIABLE_POINTER_TRACK *CacheVariable,\r | |
1621 | IN EFI_TIME *TimeStamp OPTIONAL\r | |
052ad7e1 | 1622 | )\r |
8d3a5c82 | 1623 | {\r |
8a9e0b72 | 1624 | EFI_STATUS Status;\r |
1625 | VARIABLE_HEADER *NextVariable;\r | |
72399dae | 1626 | UINTN ScratchSize;\r |
fa0737a8 | 1627 | UINTN MaxDataSize;\r |
8a9e0b72 | 1628 | UINTN VarNameOffset;\r |
1629 | UINTN VarDataOffset;\r | |
72399dae | 1630 | UINTN VarNameSize;\r |
8a9e0b72 | 1631 | UINTN VarSize;\r |
72399dae | 1632 | BOOLEAN Volatile;\r |
1633 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
8a9e0b72 | 1634 | UINT8 State;\r |
8a2d4996 | 1635 | VARIABLE_POINTER_TRACK *Variable;\r |
1636 | VARIABLE_POINTER_TRACK NvVariable;\r | |
1637 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
aab3b9b9 | 1638 | VARIABLE_RUNTIME_CACHE *VolatileCacheInstance;\r |
fa0737a8 SZ |
1639 | UINT8 *BufferForMerge;\r |
1640 | UINTN MergedBufSize;\r | |
1641 | BOOLEAN DataReady;\r | |
1642 | UINTN DataOffset;\r | |
4edb1866 SZ |
1643 | BOOLEAN IsCommonVariable;\r |
1644 | BOOLEAN IsCommonUserVariable;\r | |
fa0737a8 | 1645 | AUTHENTICATED_VARIABLE_HEADER *AuthVariable;\r |
04401023 | 1646 | BOOLEAN AuthFormat;\r |
fdb7765f | 1647 | \r |
7cd69959 | 1648 | if (mVariableModuleGlobal->FvbInstance == NULL && !mVariableModuleGlobal->VariableGlobal.EmuNvMode) {\r |
5456306f | 1649 | //\r |
fa0737a8 | 1650 | // The FVB protocol is not ready, so the EFI_VARIABLE_WRITE_ARCH_PROTOCOL is not installed.\r |
5456306f | 1651 | //\r |
fa0737a8 SZ |
1652 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
1653 | //\r | |
1654 | // Trying to update NV variable prior to the installation of EFI_VARIABLE_WRITE_ARCH_PROTOCOL\r | |
1655 | //\r | |
1656 | DEBUG ((EFI_D_ERROR, "Update NV variable before EFI_VARIABLE_WRITE_ARCH_PROTOCOL ready - %r\n", EFI_NOT_AVAILABLE_YET));\r | |
1657 | return EFI_NOT_AVAILABLE_YET;\r | |
1658 | } else if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r | |
1659 | //\r | |
1660 | // Trying to update volatile authenticated variable prior to the installation of EFI_VARIABLE_WRITE_ARCH_PROTOCOL\r | |
1661 | // The authenticated variable perhaps is not initialized, just return here.\r | |
1662 | //\r | |
1663 | DEBUG ((EFI_D_ERROR, "Update AUTH variable before EFI_VARIABLE_WRITE_ARCH_PROTOCOL ready - %r\n", EFI_NOT_AVAILABLE_YET));\r | |
1664 | return EFI_NOT_AVAILABLE_YET;\r | |
1665 | }\r | |
5456306f | 1666 | }\r |
1667 | \r | |
04401023 MK |
1668 | AuthFormat = mVariableModuleGlobal->VariableGlobal.AuthFormat;\r |
1669 | \r | |
31349131 SZ |
1670 | //\r |
1671 | // Check if CacheVariable points to the variable in variable HOB.\r | |
1672 | // If yes, let CacheVariable points to the variable in NV variable cache.\r | |
1673 | //\r | |
1674 | if ((CacheVariable->CurrPtr != NULL) &&\r | |
1675 | (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) &&\r | |
1676 | (CacheVariable->StartPtr == GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase))\r | |
1677 | ) {\r | |
1678 | CacheVariable->StartPtr = GetStartPointer (mNvVariableCache);\r | |
1679 | CacheVariable->EndPtr = GetEndPointer (mNvVariableCache);\r | |
1680 | CacheVariable->Volatile = FALSE;\r | |
04401023 | 1681 | Status = FindVariableEx (VariableName, VendorGuid, FALSE, CacheVariable, AuthFormat);\r |
31349131 SZ |
1682 | if (CacheVariable->CurrPtr == NULL || EFI_ERROR (Status)) {\r |
1683 | //\r | |
1684 | // There is no matched variable in NV variable cache.\r | |
1685 | //\r | |
1686 | if ((((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) && (DataSize == 0)) || (Attributes == 0)) {\r | |
1687 | //\r | |
1688 | // It is to delete variable,\r | |
1689 | // go to delete this variable in variable HOB and\r | |
1690 | // try to flush other variables from HOB to flash.\r | |
1691 | //\r | |
8d53adbe | 1692 | UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, FALSE, TRUE, FALSE, &gVariableInfo);\r |
31349131 SZ |
1693 | FlushHobVariableToFlash (VariableName, VendorGuid);\r |
1694 | return EFI_SUCCESS;\r | |
1695 | }\r | |
1696 | }\r | |
1697 | }\r | |
1698 | \r | |
5456306f | 1699 | if ((CacheVariable->CurrPtr == NULL) || CacheVariable->Volatile) {\r |
8a2d4996 | 1700 | Variable = CacheVariable;\r |
1701 | } else {\r | |
8a2d4996 | 1702 | //\r |
5456306f | 1703 | // Update/Delete existing NV variable.\r |
8a2d4996 | 1704 | // CacheVariable points to the variable in the memory copy of Flash area\r |
1705 | // Now let Variable points to the same variable in Flash area.\r | |
1706 | //\r | |
1707 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r | |
fa0737a8 | 1708 | Variable = &NvVariable;\r |
8a2d4996 | 1709 | Variable->StartPtr = GetStartPointer (VariableStoreHeader);\r |
9b18845a DL |
1710 | Variable->EndPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->EndPtr - (UINTN)CacheVariable->StartPtr));\r |
1711 | \r | |
5456306f | 1712 | Variable->CurrPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->CurrPtr - (UINTN)CacheVariable->StartPtr));\r |
23b06935 SZ |
1713 | if (CacheVariable->InDeletedTransitionPtr != NULL) {\r |
1714 | Variable->InDeletedTransitionPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->InDeletedTransitionPtr - (UINTN)CacheVariable->StartPtr));\r | |
1715 | } else {\r | |
1716 | Variable->InDeletedTransitionPtr = NULL;\r | |
1717 | }\r | |
5456306f | 1718 | Variable->Volatile = FALSE;\r |
fa0737a8 | 1719 | }\r |
5456306f | 1720 | \r |
1721 | Fvb = mVariableModuleGlobal->FvbInstance;\r | |
fdb7765f | 1722 | \r |
fa0737a8 SZ |
1723 | //\r |
1724 | // Tricky part: Use scratch data area at the end of volatile variable store\r | |
1725 | // as a temporary storage.\r | |
1726 | //\r | |
1727 | NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));\r | |
1728 | ScratchSize = mVariableModuleGlobal->ScratchBufferSize;\r | |
1729 | SetMem (NextVariable, ScratchSize, 0xff);\r | |
1730 | DataReady = FALSE;\r | |
1731 | \r | |
72399dae | 1732 | if (Variable->CurrPtr != NULL) {\r |
8d3a5c82 | 1733 | //\r |
8a2d4996 | 1734 | // Update/Delete existing variable.\r |
8d3a5c82 | 1735 | //\r |
fa0737a8 | 1736 | if (AtRuntime ()) {\r |
c6492839 | 1737 | //\r |
fa0737a8 SZ |
1738 | // If AtRuntime and the variable is Volatile and Runtime Access,\r |
1739 | // the volatile is ReadOnly, and SetVariable should be aborted and\r | |
c6492839 | 1740 | // return EFI_WRITE_PROTECTED.\r |
1741 | //\r | |
72399dae | 1742 | if (Variable->Volatile) {\r |
c6492839 | 1743 | Status = EFI_WRITE_PROTECTED;\r |
1744 | goto Done;\r | |
1745 | }\r | |
1746 | //\r | |
fa0737a8 SZ |
1747 | // Only variable that have NV attributes can be updated/deleted in Runtime.\r |
1748 | //\r | |
9b18845a | 1749 | if ((CacheVariable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r |
fa0737a8 SZ |
1750 | Status = EFI_INVALID_PARAMETER;\r |
1751 | goto Done;\r | |
1752 | }\r | |
1753 | \r | |
1754 | //\r | |
1755 | // Only variable that have RT attributes can be updated/deleted in Runtime.\r | |
c6492839 | 1756 | //\r |
9b18845a | 1757 | if ((CacheVariable->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) {\r |
c6492839 | 1758 | Status = EFI_INVALID_PARAMETER;\r |
fa0737a8 | 1759 | goto Done;\r |
c6492839 | 1760 | }\r |
1761 | }\r | |
8a2d4996 | 1762 | \r |
8d3a5c82 | 1763 | //\r |
c6492839 | 1764 | // Setting a data variable with no access, or zero DataSize attributes\r |
8a2d4996 | 1765 | // causes it to be deleted.\r |
fa0737a8 SZ |
1766 | // When the EFI_VARIABLE_APPEND_WRITE attribute is set, DataSize of zero will\r |
1767 | // not delete the variable.\r | |
8d3a5c82 | 1768 | //\r |
fa0737a8 | 1769 | if ((((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) && (DataSize == 0))|| ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0)) {\r |
23b06935 SZ |
1770 | if (Variable->InDeletedTransitionPtr != NULL) {\r |
1771 | //\r | |
1772 | // Both ADDED and IN_DELETED_TRANSITION variable are present,\r | |
1773 | // set IN_DELETED_TRANSITION one to DELETED state first.\r | |
1774 | //\r | |
ae658d91 | 1775 | ASSERT (CacheVariable->InDeletedTransitionPtr != NULL);\r |
9b18845a | 1776 | State = CacheVariable->InDeletedTransitionPtr->State;\r |
23b06935 SZ |
1777 | State &= VAR_DELETED;\r |
1778 | Status = UpdateVariableStore (\r | |
1779 | &mVariableModuleGlobal->VariableGlobal,\r | |
1780 | Variable->Volatile,\r | |
1781 | FALSE,\r | |
1782 | Fvb,\r | |
1783 | (UINTN) &Variable->InDeletedTransitionPtr->State,\r | |
1784 | sizeof (UINT8),\r | |
1785 | &State\r | |
1786 | );\r | |
1787 | if (!EFI_ERROR (Status)) {\r | |
1788 | if (!Variable->Volatile) {\r | |
1789 | CacheVariable->InDeletedTransitionPtr->State = State;\r | |
1790 | }\r | |
1791 | } else {\r | |
1792 | goto Done;\r | |
1793 | }\r | |
1794 | }\r | |
1795 | \r | |
9b18845a | 1796 | State = CacheVariable->CurrPtr->State;\r |
c6492839 | 1797 | State &= VAR_DELETED;\r |
1798 | \r | |
1799 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1800 | &mVariableModuleGlobal->VariableGlobal,\r |
72399dae | 1801 | Variable->Volatile,\r |
c6492839 | 1802 | FALSE,\r |
8a9e0b72 | 1803 | Fvb,\r |
72399dae | 1804 | (UINTN) &Variable->CurrPtr->State,\r |
c6492839 | 1805 | sizeof (UINT8),\r |
1806 | &State\r | |
fa0737a8 | 1807 | );\r |
33a5a666 | 1808 | if (!EFI_ERROR (Status)) {\r |
8d53adbe | 1809 | UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, FALSE, TRUE, FALSE, &gVariableInfo);\r |
8a2d4996 | 1810 | if (!Variable->Volatile) {\r |
1811 | CacheVariable->CurrPtr->State = State;\r | |
335e2681 | 1812 | FlushHobVariableToFlash (VariableName, VendorGuid);\r |
8a2d4996 | 1813 | }\r |
33a5a666 | 1814 | }\r |
fa0737a8 | 1815 | goto Done;\r |
c6492839 | 1816 | }\r |
8d3a5c82 | 1817 | //\r |
8a2d4996 | 1818 | // If the variable is marked valid, and the same data has been passed in,\r |
c6492839 | 1819 | // then return to the caller immediately.\r |
8d3a5c82 | 1820 | //\r |
04401023 MK |
1821 | if (DataSizeOfVariable (CacheVariable->CurrPtr, AuthFormat) == DataSize &&\r |
1822 | (CompareMem (Data, GetVariableDataPtr (CacheVariable->CurrPtr, AuthFormat), DataSize) == 0) &&\r | |
fa0737a8 SZ |
1823 | ((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) &&\r |
1824 | (TimeStamp == NULL)) {\r | |
1825 | //\r | |
1826 | // Variable content unchanged and no need to update timestamp, just return.\r | |
1827 | //\r | |
8d53adbe | 1828 | UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE, &gVariableInfo);\r |
c6492839 | 1829 | Status = EFI_SUCCESS;\r |
1830 | goto Done;\r | |
9b18845a DL |
1831 | } else if ((CacheVariable->CurrPtr->State == VAR_ADDED) ||\r |
1832 | (CacheVariable->CurrPtr->State == (VAR_ADDED & VAR_IN_DELETED_TRANSITION))) {\r | |
814bae52 | 1833 | \r |
fa0737a8 SZ |
1834 | //\r |
1835 | // EFI_VARIABLE_APPEND_WRITE attribute only effects for existing variable.\r | |
1836 | //\r | |
1837 | if ((Attributes & EFI_VARIABLE_APPEND_WRITE) != 0) {\r | |
1838 | //\r | |
1839 | // NOTE: From 0 to DataOffset of NextVariable is reserved for Variable Header and Name.\r | |
1840 | // From DataOffset of NextVariable is to save the existing variable data.\r | |
1841 | //\r | |
04401023 | 1842 | DataOffset = GetVariableDataOffset (CacheVariable->CurrPtr, AuthFormat);\r |
fa0737a8 | 1843 | BufferForMerge = (UINT8 *) ((UINTN) NextVariable + DataOffset);\r |
04401023 MK |
1844 | CopyMem (\r |
1845 | BufferForMerge,\r | |
1846 | (UINT8 *) ((UINTN) CacheVariable->CurrPtr + DataOffset),\r | |
1847 | DataSizeOfVariable (CacheVariable->CurrPtr, AuthFormat)\r | |
1848 | );\r | |
fa0737a8 SZ |
1849 | \r |
1850 | //\r | |
9b4a2032 | 1851 | // Set Max Auth/Non-Volatile/Volatile Variable Data Size as default MaxDataSize.\r |
fa0737a8 SZ |
1852 | //\r |
1853 | if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r | |
1854 | MaxDataSize = mVariableModuleGlobal->MaxAuthVariableSize - DataOffset;\r | |
9b4a2032 | 1855 | } else if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
fa0737a8 | 1856 | MaxDataSize = mVariableModuleGlobal->MaxVariableSize - DataOffset;\r |
9b4a2032 LE |
1857 | } else {\r |
1858 | MaxDataSize = mVariableModuleGlobal->MaxVolatileVariableSize - DataOffset;\r | |
fa0737a8 SZ |
1859 | }\r |
1860 | \r | |
1861 | //\r | |
1862 | // Append the new data to the end of existing data.\r | |
1863 | // Max Harware error record variable data size is different from common/auth variable.\r | |
1864 | //\r | |
1865 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
1866 | MaxDataSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - DataOffset;\r | |
1867 | }\r | |
1868 | \r | |
04401023 | 1869 | if (DataSizeOfVariable (CacheVariable->CurrPtr, AuthFormat) + DataSize > MaxDataSize) {\r |
fa0737a8 SZ |
1870 | //\r |
1871 | // Existing data size + new data size exceed maximum variable size limitation.\r | |
1872 | //\r | |
1873 | Status = EFI_INVALID_PARAMETER;\r | |
1874 | goto Done;\r | |
1875 | }\r | |
04401023 MK |
1876 | CopyMem (\r |
1877 | (UINT8*) (\r | |
1878 | (UINTN) BufferForMerge + DataSizeOfVariable (CacheVariable->CurrPtr, AuthFormat)\r | |
1879 | ),\r | |
1880 | Data,\r | |
1881 | DataSize\r | |
1882 | );\r | |
1883 | MergedBufSize = DataSizeOfVariable (CacheVariable->CurrPtr, AuthFormat) +\r | |
1884 | DataSize;\r | |
fa0737a8 SZ |
1885 | \r |
1886 | //\r | |
1887 | // BufferForMerge(from DataOffset of NextVariable) has included the merged existing and new data.\r | |
1888 | //\r | |
1889 | Data = BufferForMerge;\r | |
1890 | DataSize = MergedBufSize;\r | |
1891 | DataReady = TRUE;\r | |
1892 | }\r | |
1893 | \r | |
c6492839 | 1894 | //\r |
8a2d4996 | 1895 | // Mark the old variable as in delete transition.\r |
c6492839 | 1896 | //\r |
9b18845a | 1897 | State = CacheVariable->CurrPtr->State;\r |
c6492839 | 1898 | State &= VAR_IN_DELETED_TRANSITION;\r |
1899 | \r | |
1900 | Status = UpdateVariableStore (\r | |
052ad7e1 | 1901 | &mVariableModuleGlobal->VariableGlobal,\r |
72399dae | 1902 | Variable->Volatile,\r |
c6492839 | 1903 | FALSE,\r |
8a9e0b72 | 1904 | Fvb,\r |
72399dae | 1905 | (UINTN) &Variable->CurrPtr->State,\r |
c6492839 | 1906 | sizeof (UINT8),\r |
1907 | &State\r | |
fa0737a8 | 1908 | );\r |
c6492839 | 1909 | if (EFI_ERROR (Status)) {\r |
fa0737a8 SZ |
1910 | goto Done;\r |
1911 | }\r | |
8a2d4996 | 1912 | if (!Variable->Volatile) {\r |
1913 | CacheVariable->CurrPtr->State = State;\r | |
1914 | }\r | |
fa0737a8 | 1915 | }\r |
72399dae | 1916 | } else {\r |
8d3a5c82 | 1917 | //\r |
8a2d4996 | 1918 | // Not found existing variable. Create a new variable.\r |
fa0737a8 SZ |
1919 | //\r |
1920 | \r | |
1921 | if ((DataSize == 0) && ((Attributes & EFI_VARIABLE_APPEND_WRITE) != 0)) {\r | |
1922 | Status = EFI_SUCCESS;\r | |
1923 | goto Done;\r | |
1924 | }\r | |
1925 | \r | |
8d3a5c82 | 1926 | //\r |
c6492839 | 1927 | // Make sure we are trying to create a new variable.\r |
fa0737a8 | 1928 | // Setting a data variable with zero DataSize or no access attributes means to delete it.\r |
8d3a5c82 | 1929 | //\r |
c6492839 | 1930 | if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r |
1931 | Status = EFI_NOT_FOUND;\r | |
1932 | goto Done;\r | |
1933 | }\r | |
fa0737a8 | 1934 | \r |
8d3a5c82 | 1935 | //\r |
8a2d4996 | 1936 | // Only variable have NV|RT attribute can be created in Runtime.\r |
c6492839 | 1937 | //\r |
8a2d4996 | 1938 | if (AtRuntime () &&\r |
45f6c85b | 1939 | (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r |
c6492839 | 1940 | Status = EFI_INVALID_PARAMETER;\r |
1941 | goto Done;\r | |
fa0737a8 | 1942 | }\r |
c6492839 | 1943 | }\r |
1944 | \r | |
1945 | //\r | |
1946 | // Function part - create a new variable and copy the data.\r | |
1947 | // Both update a variable and create a variable will come here.\r | |
c6492839 | 1948 | //\r |
c6492839 | 1949 | NextVariable->StartId = VARIABLE_DATA;\r |
c6492839 | 1950 | //\r |
1951 | // NextVariable->State = VAR_ADDED;\r | |
1952 | //\r | |
8a2d4996 | 1953 | NextVariable->Reserved = 0;\r |
fa0737a8 SZ |
1954 | if (mVariableModuleGlobal->VariableGlobal.AuthFormat) {\r |
1955 | AuthVariable = (AUTHENTICATED_VARIABLE_HEADER *) NextVariable;\r | |
1956 | AuthVariable->PubKeyIndex = KeyIndex;\r | |
1957 | AuthVariable->MonotonicCount = MonotonicCount;\r | |
1958 | ZeroMem (&AuthVariable->TimeStamp, sizeof (EFI_TIME));\r | |
1959 | \r | |
1960 | if (((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0) &&\r | |
1961 | (TimeStamp != NULL)) {\r | |
1962 | if ((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) {\r | |
1963 | CopyMem (&AuthVariable->TimeStamp, TimeStamp, sizeof (EFI_TIME));\r | |
1964 | } else {\r | |
1965 | //\r | |
1966 | // In the case when the EFI_VARIABLE_APPEND_WRITE attribute is set, only\r | |
1967 | // when the new TimeStamp value is later than the current timestamp associated\r | |
1968 | // with the variable, we need associate the new timestamp with the updated value.\r | |
1969 | //\r | |
1970 | if (Variable->CurrPtr != NULL) {\r | |
9b18845a | 1971 | if (VariableCompareTimeStampInternal (&(((AUTHENTICATED_VARIABLE_HEADER *) CacheVariable->CurrPtr)->TimeStamp), TimeStamp)) {\r |
fa0737a8 | 1972 | CopyMem (&AuthVariable->TimeStamp, TimeStamp, sizeof (EFI_TIME));\r |
b7dc8888 SZ |
1973 | } else {\r |
1974 | CopyMem (&AuthVariable->TimeStamp, &(((AUTHENTICATED_VARIABLE_HEADER *) CacheVariable->CurrPtr)->TimeStamp), sizeof (EFI_TIME));\r | |
fa0737a8 SZ |
1975 | }\r |
1976 | }\r | |
1977 | }\r | |
1978 | }\r | |
1979 | }\r | |
1980 | \r | |
1981 | //\r | |
1982 | // The EFI_VARIABLE_APPEND_WRITE attribute will never be set in the returned\r | |
1983 | // Attributes bitmask parameter of a GetVariable() call.\r | |
1984 | //\r | |
1985 | NextVariable->Attributes = Attributes & (~EFI_VARIABLE_APPEND_WRITE);\r | |
1986 | \r | |
04401023 | 1987 | VarNameOffset = GetVariableHeaderSize (AuthFormat);\r |
8a2d4996 | 1988 | VarNameSize = StrSize (VariableName);\r |
c6492839 | 1989 | CopyMem (\r |
1990 | (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r | |
1991 | VariableName,\r | |
1992 | VarNameSize\r | |
1993 | );\r | |
1994 | VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r | |
fa0737a8 SZ |
1995 | \r |
1996 | //\r | |
1997 | // If DataReady is TRUE, it means the variable data has been saved into\r | |
1998 | // NextVariable during EFI_VARIABLE_APPEND_WRITE operation preparation.\r | |
1999 | //\r | |
2000 | if (!DataReady) {\r | |
2001 | CopyMem (\r | |
2002 | (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r | |
2003 | Data,\r | |
2004 | DataSize\r | |
2005 | );\r | |
2006 | }\r | |
2007 | \r | |
04401023 MK |
2008 | CopyMem (\r |
2009 | GetVendorGuidPtr (NextVariable, AuthFormat),\r | |
2010 | VendorGuid,\r | |
2011 | sizeof (EFI_GUID)\r | |
2012 | );\r | |
c6492839 | 2013 | //\r |
2014 | // There will be pad bytes after Data, the NextVariable->NameSize and\r | |
2015 | // NextVariable->DataSize should not include pad size so that variable\r | |
8a2d4996 | 2016 | // service can get actual size in GetVariable.\r |
c6492839 | 2017 | //\r |
04401023 MK |
2018 | SetNameSizeOfVariable (NextVariable, VarNameSize, AuthFormat);\r |
2019 | SetDataSizeOfVariable (NextVariable, DataSize, AuthFormat);\r | |
c6492839 | 2020 | \r |
2021 | //\r | |
2022 | // The actual size of the variable that stores in storage should\r | |
2023 | // include pad size.\r | |
2024 | //\r | |
2025 | VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r | |
45f6c85b | 2026 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
8d3a5c82 | 2027 | //\r |
8a2d4996 | 2028 | // Create a nonvolatile variable.\r |
8d3a5c82 | 2029 | //\r |
fd51bf70 | 2030 | Volatile = FALSE;\r |
4edb1866 SZ |
2031 | \r |
2032 | IsCommonVariable = FALSE;\r | |
2033 | IsCommonUserVariable = FALSE;\r | |
2034 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0) {\r | |
2035 | IsCommonVariable = TRUE;\r | |
2036 | IsCommonUserVariable = IsUserVariable (NextVariable);\r | |
2037 | }\r | |
2038 | if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0)\r | |
188e4e84 | 2039 | && ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r |
4edb1866 SZ |
2040 | || (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonVariableSpace))\r |
2041 | || (IsCommonVariable && AtRuntime () && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonRuntimeVariableSpace))\r | |
2042 | || (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace))) {\r | |
8a2d4996 | 2043 | if (AtRuntime ()) {\r |
4edb1866 SZ |
2044 | if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r |
2045 | RecordVarErrorFlag (VAR_ERROR_FLAG_USER_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2046 | }\r | |
2047 | if (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonRuntimeVariableSpace)) {\r | |
2048 | RecordVarErrorFlag (VAR_ERROR_FLAG_SYSTEM_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2049 | }\r | |
c6492839 | 2050 | Status = EFI_OUT_OF_RESOURCES;\r |
2051 | goto Done;\r | |
2052 | }\r | |
2053 | //\r | |
7baf3c69 | 2054 | // Perform garbage collection & reclaim operation, and integrate the new variable at the same time.\r |
c6492839 | 2055 | //\r |
fa0737a8 SZ |
2056 | Status = Reclaim (\r |
2057 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
2058 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
2059 | FALSE,\r | |
2060 | Variable,\r | |
2061 | NextVariable,\r | |
2062 | HEADER_ALIGN (VarSize)\r | |
2063 | );\r | |
7baf3c69 SZ |
2064 | if (!EFI_ERROR (Status)) {\r |
2065 | //\r | |
2066 | // The new variable has been integrated successfully during reclaiming.\r | |
2067 | //\r | |
2068 | if (Variable->CurrPtr != NULL) {\r | |
2069 | CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN) CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable->StartPtr));\r | |
2070 | CacheVariable->InDeletedTransitionPtr = NULL;\r | |
2071 | }\r | |
8d53adbe | 2072 | UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, TRUE, FALSE, FALSE, &gVariableInfo);\r |
7baf3c69 | 2073 | FlushHobVariableToFlash (VariableName, VendorGuid);\r |
4edb1866 SZ |
2074 | } else {\r |
2075 | if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r | |
2076 | RecordVarErrorFlag (VAR_ERROR_FLAG_USER_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2077 | }\r | |
2078 | if (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonVariableSpace)) {\r | |
2079 | RecordVarErrorFlag (VAR_ERROR_FLAG_SYSTEM_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r | |
2080 | }\r | |
23b06935 | 2081 | }\r |
7baf3c69 | 2082 | goto Done;\r |
8d3a5c82 | 2083 | }\r |
c6492839 | 2084 | \r |
7cd69959 SZ |
2085 | if (!mVariableModuleGlobal->VariableGlobal.EmuNvMode) {\r |
2086 | //\r | |
2087 | // Four steps\r | |
2088 | // 1. Write variable header\r | |
2089 | // 2. Set variable state to header valid\r | |
2090 | // 3. Write variable data\r | |
2091 | // 4. Set variable state to valid\r | |
2092 | //\r | |
2093 | //\r | |
2094 | // Step 1:\r | |
2095 | //\r | |
2096 | Status = UpdateVariableStore (\r | |
2097 | &mVariableModuleGlobal->VariableGlobal,\r | |
2098 | FALSE,\r | |
2099 | TRUE,\r | |
2100 | Fvb,\r | |
2101 | mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
04401023 | 2102 | (UINT32) GetVariableHeaderSize (AuthFormat),\r |
7cd69959 SZ |
2103 | (UINT8 *) NextVariable\r |
2104 | );\r | |
130e2569 | 2105 | \r |
7cd69959 SZ |
2106 | if (EFI_ERROR (Status)) {\r |
2107 | goto Done;\r | |
2108 | }\r | |
130e2569 | 2109 | \r |
7cd69959 SZ |
2110 | //\r |
2111 | // Step 2:\r | |
2112 | //\r | |
2113 | NextVariable->State = VAR_HEADER_VALID_ONLY;\r | |
2114 | Status = UpdateVariableStore (\r | |
2115 | &mVariableModuleGlobal->VariableGlobal,\r | |
2116 | FALSE,\r | |
2117 | TRUE,\r | |
2118 | Fvb,\r | |
2119 | mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r | |
2120 | sizeof (UINT8),\r | |
2121 | &NextVariable->State\r | |
2122 | );\r | |
c6492839 | 2123 | \r |
7cd69959 SZ |
2124 | if (EFI_ERROR (Status)) {\r |
2125 | goto Done;\r | |
2126 | }\r | |
2127 | //\r | |
2128 | // Step 3:\r | |
2129 | //\r | |
2130 | Status = UpdateVariableStore (\r | |
2131 | &mVariableModuleGlobal->VariableGlobal,\r | |
2132 | FALSE,\r | |
2133 | TRUE,\r | |
2134 | Fvb,\r | |
04401023 MK |
2135 | mVariableModuleGlobal->NonVolatileLastVariableOffset + GetVariableHeaderSize (AuthFormat),\r |
2136 | (UINT32) (VarSize - GetVariableHeaderSize (AuthFormat)),\r | |
2137 | (UINT8 *) NextVariable + GetVariableHeaderSize (AuthFormat)\r | |
7cd69959 | 2138 | );\r |
c6492839 | 2139 | \r |
7cd69959 SZ |
2140 | if (EFI_ERROR (Status)) {\r |
2141 | goto Done;\r | |
2142 | }\r | |
2143 | //\r | |
2144 | // Step 4:\r | |
2145 | //\r | |
2146 | NextVariable->State = VAR_ADDED;\r | |
2147 | Status = UpdateVariableStore (\r | |
2148 | &mVariableModuleGlobal->VariableGlobal,\r | |
2149 | FALSE,\r | |
2150 | TRUE,\r | |
2151 | Fvb,\r | |
2152 | mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r | |
2153 | sizeof (UINT8),\r | |
2154 | &NextVariable->State\r | |
2155 | );\r | |
8d3a5c82 | 2156 | \r |
7cd69959 SZ |
2157 | if (EFI_ERROR (Status)) {\r |
2158 | goto Done;\r | |
2159 | }\r | |
2160 | \r | |
2161 | //\r | |
2162 | // Update the memory copy of Flash region.\r | |
2163 | //\r | |
2164 | CopyMem ((UINT8 *)mNvVariableCache + mVariableModuleGlobal->NonVolatileLastVariableOffset, (UINT8 *)NextVariable, VarSize);\r | |
2165 | } else {\r | |
2166 | //\r | |
2167 | // Emulated non-volatile variable mode.\r | |
2168 | //\r | |
2169 | NextVariable->State = VAR_ADDED;\r | |
2170 | Status = UpdateVariableStore (\r | |
2171 | &mVariableModuleGlobal->VariableGlobal,\r | |
2172 | FALSE,\r | |
2173 | TRUE,\r | |
2174 | Fvb,\r | |
2175 | mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
2176 | (UINT32) VarSize,\r | |
2177 | (UINT8 *) NextVariable\r | |
2178 | );\r | |
2179 | \r | |
2180 | if (EFI_ERROR (Status)) {\r | |
2181 | goto Done;\r | |
2182 | }\r | |
2183 | }\r | |
ebe34c96 | 2184 | \r |
72399dae | 2185 | mVariableModuleGlobal->NonVolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r |
8d3a5c82 | 2186 | \r |
2fcdca1d | 2187 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r |
2188 | mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
2189 | } else {\r | |
2190 | mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
4edb1866 SZ |
2191 | if (IsCommonUserVariable) {\r |
2192 | mVariableModuleGlobal->CommonUserVariableTotalSize += HEADER_ALIGN (VarSize);\r | |
2193 | }\r | |
2fcdca1d | 2194 | }\r |
c6492839 | 2195 | } else {\r |
2196 | //\r | |
8a2d4996 | 2197 | // Create a volatile variable.\r |
fa0737a8 | 2198 | //\r |
fd51bf70 | 2199 | Volatile = TRUE;\r |
c6492839 | 2200 | \r |
72399dae | 2201 | if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r |
052ad7e1 | 2202 | ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size) {\r |
8d3a5c82 | 2203 | //\r |
7baf3c69 | 2204 | // Perform garbage collection & reclaim operation, and integrate the new variable at the same time.\r |
8d3a5c82 | 2205 | //\r |
fa0737a8 SZ |
2206 | Status = Reclaim (\r |
2207 | mVariableModuleGlobal->VariableGlobal.VolatileVariableBase,\r | |
2208 | &mVariableModuleGlobal->VolatileLastVariableOffset,\r | |
2209 | TRUE,\r | |
2210 | Variable,\r | |
2211 | NextVariable,\r | |
2212 | HEADER_ALIGN (VarSize)\r | |
2213 | );\r | |
7baf3c69 SZ |
2214 | if (!EFI_ERROR (Status)) {\r |
2215 | //\r | |
2216 | // The new variable has been integrated successfully during reclaiming.\r | |
2217 | //\r | |
2218 | if (Variable->CurrPtr != NULL) {\r | |
2219 | CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN) CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable->StartPtr));\r | |
2220 | CacheVariable->InDeletedTransitionPtr = NULL;\r | |
2221 | }\r | |
8d53adbe | 2222 | UpdateVariableInfo (VariableName, VendorGuid, TRUE, FALSE, TRUE, FALSE, FALSE, &gVariableInfo);\r |
23b06935 | 2223 | }\r |
7baf3c69 | 2224 | goto Done;\r |
8d3a5c82 | 2225 | }\r |
8d3a5c82 | 2226 | \r |
c6492839 | 2227 | NextVariable->State = VAR_ADDED;\r |
2228 | Status = UpdateVariableStore (\r | |
052ad7e1 | 2229 | &mVariableModuleGlobal->VariableGlobal,\r |
c6492839 | 2230 | TRUE,\r |
2231 | TRUE,\r | |
8a9e0b72 | 2232 | Fvb,\r |
72399dae | 2233 | mVariableModuleGlobal->VolatileLastVariableOffset,\r |
c6492839 | 2234 | (UINT32) VarSize,\r |
2235 | (UINT8 *) NextVariable\r | |
2236 | );\r | |
2237 | \r | |
2238 | if (EFI_ERROR (Status)) {\r | |
2239 | goto Done;\r | |
8d3a5c82 | 2240 | }\r |
c6492839 | 2241 | \r |
72399dae | 2242 | mVariableModuleGlobal->VolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r |
c6492839 | 2243 | }\r |
72399dae | 2244 | \r |
c6492839 | 2245 | //\r |
8a2d4996 | 2246 | // Mark the old variable as deleted.\r |
c6492839 | 2247 | //\r |
23b06935 SZ |
2248 | if (!EFI_ERROR (Status) && Variable->CurrPtr != NULL) {\r |
2249 | if (Variable->InDeletedTransitionPtr != NULL) {\r | |
2250 | //\r | |
2251 | // Both ADDED and IN_DELETED_TRANSITION old variable are present,\r | |
2252 | // set IN_DELETED_TRANSITION one to DELETED state first.\r | |
2253 | //\r | |
ae658d91 | 2254 | ASSERT (CacheVariable->InDeletedTransitionPtr != NULL);\r |
9b18845a | 2255 | State = CacheVariable->InDeletedTransitionPtr->State;\r |
23b06935 SZ |
2256 | State &= VAR_DELETED;\r |
2257 | Status = UpdateVariableStore (\r | |
2258 | &mVariableModuleGlobal->VariableGlobal,\r | |
2259 | Variable->Volatile,\r | |
2260 | FALSE,\r | |
2261 | Fvb,\r | |
2262 | (UINTN) &Variable->InDeletedTransitionPtr->State,\r | |
2263 | sizeof (UINT8),\r | |
2264 | &State\r | |
2265 | );\r | |
2266 | if (!EFI_ERROR (Status)) {\r | |
2267 | if (!Variable->Volatile) {\r | |
2268 | CacheVariable->InDeletedTransitionPtr->State = State;\r | |
2269 | }\r | |
2270 | } else {\r | |
2271 | goto Done;\r | |
2272 | }\r | |
2273 | }\r | |
2274 | \r | |
874c8434 | 2275 | State = CacheVariable->CurrPtr->State;\r |
c6492839 | 2276 | State &= VAR_DELETED;\r |
2277 | \r | |
2278 | Status = UpdateVariableStore (\r | |
72399dae | 2279 | &mVariableModuleGlobal->VariableGlobal,\r |
2280 | Variable->Volatile,\r | |
2281 | FALSE,\r | |
2282 | Fvb,\r | |
2283 | (UINTN) &Variable->CurrPtr->State,\r | |
2284 | sizeof (UINT8),\r | |
2285 | &State\r | |
2286 | );\r | |
fa0737a8 | 2287 | if (!EFI_ERROR (Status) && !Variable->Volatile) {\r |
8a2d4996 | 2288 | CacheVariable->CurrPtr->State = State;\r |
2289 | }\r | |
72399dae | 2290 | }\r |
2291 | \r | |
2292 | if (!EFI_ERROR (Status)) {\r | |
8d53adbe | 2293 | UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE, &gVariableInfo);\r |
335e2681 SZ |
2294 | if (!Volatile) {\r |
2295 | FlushHobVariableToFlash (VariableName, VendorGuid);\r | |
2296 | }\r | |
72399dae | 2297 | }\r |
2298 | \r | |
2299 | Done:\r | |
aab3b9b9 | 2300 | if (!EFI_ERROR (Status)) {\r |
6fe77f34 | 2301 | if ((Variable->CurrPtr != NULL && !Variable->Volatile) || (Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
aab3b9b9 | 2302 | VolatileCacheInstance = &(mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeNvCache);\r |
6fe77f34 MK |
2303 | } else {\r |
2304 | VolatileCacheInstance = &(mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeVolatileCache);\r | |
aab3b9b9 MK |
2305 | }\r |
2306 | \r | |
2307 | if (VolatileCacheInstance->Store != NULL) {\r | |
2308 | Status = SynchronizeRuntimeVariableCache (\r | |
2309 | VolatileCacheInstance,\r | |
2310 | 0,\r | |
2311 | VolatileCacheInstance->Store->Size\r | |
2312 | );\r | |
2313 | ASSERT_EFI_ERROR (Status);\r | |
2314 | }\r | |
2315 | }\r | |
2316 | \r | |
72399dae | 2317 | return Status;\r |
2318 | }\r | |
2319 | \r | |
2320 | /**\r | |
2321 | \r | |
2322 | This code finds variable in storage blocks (Volatile or Non-Volatile).\r | |
2323 | \r | |
18a7dbbc SZ |
2324 | Caution: This function may receive untrusted input.\r |
2325 | This function may be invoked in SMM mode, and datasize is external input.\r | |
2326 | This function will do basic validation, before parse the data.\r | |
2327 | \r | |
72399dae | 2328 | @param VariableName Name of Variable to be found.\r |
2329 | @param VendorGuid Variable vendor GUID.\r | |
2330 | @param Attributes Attribute value of the variable found.\r | |
2331 | @param DataSize Size of Data found. If size is less than the\r | |
2332 | data, this value contains the required size.\r | |
dd59d95e SZ |
2333 | @param Data The buffer to return the contents of the variable. May be NULL\r |
2334 | with a zero DataSize in order to determine the size buffer needed.\r | |
fa0737a8 | 2335 | \r |
8a2d4996 | 2336 | @return EFI_INVALID_PARAMETER Invalid parameter.\r |
2337 | @return EFI_SUCCESS Find the specified variable.\r | |
2338 | @return EFI_NOT_FOUND Not found.\r | |
2339 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r | |
72399dae | 2340 | \r |
2341 | **/\r | |
2342 | EFI_STATUS\r | |
2343 | EFIAPI\r | |
8a2d4996 | 2344 | VariableServiceGetVariable (\r |
72399dae | 2345 | IN CHAR16 *VariableName,\r |
2346 | IN EFI_GUID *VendorGuid,\r | |
2347 | OUT UINT32 *Attributes OPTIONAL,\r | |
2348 | IN OUT UINTN *DataSize,\r | |
dd59d95e | 2349 | OUT VOID *Data OPTIONAL\r |
72399dae | 2350 | )\r |
2351 | {\r | |
2352 | EFI_STATUS Status;\r | |
2353 | VARIABLE_POINTER_TRACK Variable;\r | |
2354 | UINTN VarDataSize;\r | |
2355 | \r | |
2356 | if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r | |
2357 | return EFI_INVALID_PARAMETER;\r | |
2358 | }\r | |
2359 | \r | |
e19eab61 SZ |
2360 | if (VariableName[0] == 0) {\r |
2361 | return EFI_NOT_FOUND;\r | |
2362 | }\r | |
2363 | \r | |
72399dae | 2364 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
fa0737a8 | 2365 | \r |
9622df63 | 2366 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r |
72399dae | 2367 | if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r |
2368 | goto Done;\r | |
2369 | }\r | |
2370 | \r | |
2371 | //\r | |
2372 | // Get data size\r | |
2373 | //\r | |
04401023 | 2374 | VarDataSize = DataSizeOfVariable (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
72399dae | 2375 | ASSERT (VarDataSize != 0);\r |
2376 | \r | |
2377 | if (*DataSize >= VarDataSize) {\r | |
2378 | if (Data == NULL) {\r | |
2379 | Status = EFI_INVALID_PARAMETER;\r | |
2380 | goto Done;\r | |
33a5a666 | 2381 | }\r |
72399dae | 2382 | \r |
04401023 | 2383 | CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat), VarDataSize);\r |
72399dae | 2384 | \r |
2385 | *DataSize = VarDataSize;\r | |
8d53adbe | 2386 | UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE, &gVariableInfo);\r |
fa0737a8 | 2387 | \r |
72399dae | 2388 | Status = EFI_SUCCESS;\r |
2389 | goto Done;\r | |
2390 | } else {\r | |
2391 | *DataSize = VarDataSize;\r | |
2392 | Status = EFI_BUFFER_TOO_SMALL;\r | |
2393 | goto Done;\r | |
8d3a5c82 | 2394 | }\r |
2395 | \r | |
72399dae | 2396 | Done:\r |
edf88807 MK |
2397 | if (Status == EFI_SUCCESS || Status == EFI_BUFFER_TOO_SMALL) {\r |
2398 | if (Attributes != NULL && Variable.CurrPtr != NULL) {\r | |
2399 | *Attributes = Variable.CurrPtr->Attributes;\r | |
2400 | }\r | |
2401 | }\r | |
72399dae | 2402 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
2403 | return Status;\r | |
2404 | }\r | |
2405 | \r | |
fa0737a8 SZ |
2406 | /**\r |
2407 | \r | |
2408 | This code Finds the Next available variable.\r | |
2409 | \r | |
2410 | Caution: This function may receive untrusted input.\r | |
2411 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
2412 | \r | |
6f817f9b SZ |
2413 | @param VariableNameSize The size of the VariableName buffer. The size must be large\r |
2414 | enough to fit input string supplied in VariableName buffer.\r | |
fa0737a8 SZ |
2415 | @param VariableName Pointer to variable name.\r |
2416 | @param VendorGuid Variable Vendor Guid.\r | |
2417 | \r | |
6f817f9b SZ |
2418 | @retval EFI_SUCCESS The function completed successfully.\r |
2419 | @retval EFI_NOT_FOUND The next variable was not found.\r | |
2420 | @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.\r | |
2421 | VariableNameSize has been updated with the size needed to complete the request.\r | |
2422 | @retval EFI_INVALID_PARAMETER VariableNameSize is NULL.\r | |
2423 | @retval EFI_INVALID_PARAMETER VariableName is NULL.\r | |
2424 | @retval EFI_INVALID_PARAMETER VendorGuid is NULL.\r | |
2425 | @retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and\r | |
2426 | GUID of an existing variable.\r | |
2427 | @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first VariableNameSize bytes of\r | |
2428 | the input VariableName buffer.\r | |
fa0737a8 SZ |
2429 | \r |
2430 | **/\r | |
2431 | EFI_STATUS\r | |
2432 | EFIAPI\r | |
2433 | VariableServiceGetNextVariableName (\r | |
2434 | IN OUT UINTN *VariableNameSize,\r | |
2435 | IN OUT CHAR16 *VariableName,\r | |
2436 | IN OUT EFI_GUID *VendorGuid\r | |
2437 | )\r | |
2438 | {\r | |
2439 | EFI_STATUS Status;\r | |
6f817f9b | 2440 | UINTN MaxLen;\r |
fa0737a8 | 2441 | UINTN VarNameSize;\r |
04401023 | 2442 | BOOLEAN AuthFormat;\r |
fa0737a8 | 2443 | VARIABLE_HEADER *VariablePtr;\r |
f8ff4cca | 2444 | VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r |
fa0737a8 SZ |
2445 | \r |
2446 | if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r | |
2447 | return EFI_INVALID_PARAMETER;\r | |
2448 | }\r | |
2449 | \r | |
04401023 MK |
2450 | AuthFormat = mVariableModuleGlobal->VariableGlobal.AuthFormat;\r |
2451 | \r | |
6f817f9b SZ |
2452 | //\r |
2453 | // Calculate the possible maximum length of name string, including the Null terminator.\r | |
2454 | //\r | |
2455 | MaxLen = *VariableNameSize / sizeof (CHAR16);\r | |
2456 | if ((MaxLen == 0) || (StrnLenS (VariableName, MaxLen) == MaxLen)) {\r | |
2457 | //\r | |
2458 | // Null-terminator is not found in the first VariableNameSize bytes of the input VariableName buffer,\r | |
2459 | // follow spec to return EFI_INVALID_PARAMETER.\r | |
2460 | //\r | |
2461 | return EFI_INVALID_PARAMETER;\r | |
2462 | }\r | |
2463 | \r | |
fa0737a8 SZ |
2464 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
2465 | \r | |
f8ff4cca MK |
2466 | //\r |
2467 | // 0: Volatile, 1: HOB, 2: Non-Volatile.\r | |
2468 | // The index and attributes mapping must be kept in this order as FindVariable\r | |
2469 | // makes use of this mapping to implement search algorithm.\r | |
2470 | //\r | |
2471 | VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r | |
2472 | VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r | |
2473 | VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r | |
2474 | \r | |
04401023 MK |
2475 | Status = VariableServiceGetNextVariableInternal (\r |
2476 | VariableName,\r | |
2477 | VendorGuid,\r | |
2478 | VariableStoreHeader,\r | |
2479 | &VariablePtr,\r | |
2480 | AuthFormat\r | |
2481 | );\r | |
fa0737a8 | 2482 | if (!EFI_ERROR (Status)) {\r |
04401023 | 2483 | VarNameSize = NameSizeOfVariable (VariablePtr, AuthFormat);\r |
fa0737a8 SZ |
2484 | ASSERT (VarNameSize != 0);\r |
2485 | if (VarNameSize <= *VariableNameSize) {\r | |
04401023 MK |
2486 | CopyMem (\r |
2487 | VariableName,\r | |
2488 | GetVariableNamePtr (VariablePtr, AuthFormat),\r | |
2489 | VarNameSize\r | |
2490 | );\r | |
2491 | CopyMem (\r | |
2492 | VendorGuid,\r | |
2493 | GetVendorGuidPtr (VariablePtr, AuthFormat),\r | |
2494 | sizeof (EFI_GUID)\r | |
2495 | );\r | |
fa0737a8 SZ |
2496 | Status = EFI_SUCCESS;\r |
2497 | } else {\r | |
2498 | Status = EFI_BUFFER_TOO_SMALL;\r | |
2499 | }\r | |
2500 | \r | |
2501 | *VariableNameSize = VarNameSize;\r | |
2502 | }\r | |
2503 | \r | |
72399dae | 2504 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
2505 | return Status;\r | |
2506 | }\r | |
2507 | \r | |
2508 | /**\r | |
2509 | \r | |
2510 | This code sets variable in storage blocks (Volatile or Non-Volatile).\r | |
2511 | \r | |
18a7dbbc SZ |
2512 | Caution: This function may receive untrusted input.\r |
2513 | This function may be invoked in SMM mode, and datasize and data are external input.\r | |
2514 | This function will do basic validation, before parse the data.\r | |
fa0737a8 SZ |
2515 | This function will parse the authentication carefully to avoid security issues, like\r |
2516 | buffer overflow, integer overflow.\r | |
2517 | This function will check attribute carefully to avoid authentication bypass.\r | |
18a7dbbc | 2518 | \r |
8a2d4996 | 2519 | @param VariableName Name of Variable to be found.\r |
2520 | @param VendorGuid Variable vendor GUID.\r | |
72399dae | 2521 | @param Attributes Attribute value of the variable found\r |
2522 | @param DataSize Size of Data found. If size is less than the\r | |
2523 | data, this value contains the required size.\r | |
8a2d4996 | 2524 | @param Data Data pointer.\r |
72399dae | 2525 | \r |
8a2d4996 | 2526 | @return EFI_INVALID_PARAMETER Invalid parameter.\r |
2527 | @return EFI_SUCCESS Set successfully.\r | |
2528 | @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r | |
2529 | @return EFI_NOT_FOUND Not found.\r | |
2530 | @return EFI_WRITE_PROTECTED Variable is read-only.\r | |
72399dae | 2531 | \r |
2532 | **/\r | |
2533 | EFI_STATUS\r | |
2534 | EFIAPI\r | |
8a2d4996 | 2535 | VariableServiceSetVariable (\r |
72399dae | 2536 | IN CHAR16 *VariableName,\r |
2537 | IN EFI_GUID *VendorGuid,\r | |
2538 | IN UINT32 Attributes,\r | |
2539 | IN UINTN DataSize,\r | |
2540 | IN VOID *Data\r | |
2541 | )\r | |
2542 | {\r | |
2543 | VARIABLE_POINTER_TRACK Variable;\r | |
2544 | EFI_STATUS Status;\r | |
2545 | VARIABLE_HEADER *NextVariable;\r | |
2546 | EFI_PHYSICAL_ADDRESS Point;\r | |
fa0737a8 | 2547 | UINTN PayloadSize;\r |
04401023 MK |
2548 | BOOLEAN AuthFormat;\r |
2549 | \r | |
2550 | AuthFormat = mVariableModuleGlobal->VariableGlobal.AuthFormat;\r | |
72399dae | 2551 | \r |
2552 | //\r | |
8a2d4996 | 2553 | // Check input parameters.\r |
72399dae | 2554 | //\r |
2555 | if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r | |
2556 | return EFI_INVALID_PARAMETER;\r | |
fa0737a8 | 2557 | }\r |
48a0e6bf | 2558 | \r |
2559 | if (DataSize != 0 && Data == NULL) {\r | |
2560 | return EFI_INVALID_PARAMETER;\r | |
2561 | }\r | |
2562 | \r | |
8e38f18e | 2563 | //\r |
fa0737a8 | 2564 | // Check for reserverd bit in variable attribute.\r |
4073f85d ZC |
2565 | // EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS is deprecated but we still allow\r |
2566 | // the delete operation of common authenticated variable at user physical presence.\r | |
2567 | // So leave EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS attribute check to AuthVariableLib\r | |
8e38f18e | 2568 | //\r |
4073f85d | 2569 | if ((Attributes & (~(EFI_VARIABLE_ATTRIBUTES_MASK | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS))) != 0) {\r |
8e38f18e | 2570 | return EFI_INVALID_PARAMETER;\r |
2571 | }\r | |
2572 | \r | |
72399dae | 2573 | //\r |
8a2d4996 | 2574 | // Make sure if runtime bit is set, boot service bit is set also.\r |
72399dae | 2575 | //\r |
2576 | if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r | |
67943427 | 2577 | if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r |
2578 | return EFI_UNSUPPORTED;\r | |
2579 | } else {\r | |
2580 | return EFI_INVALID_PARAMETER;\r | |
2581 | }\r | |
fa0737a8 SZ |
2582 | } else if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r |
2583 | if (!mVariableModuleGlobal->VariableGlobal.AuthSupport) {\r | |
2584 | //\r | |
2585 | // Not support authenticated variable write.\r | |
2586 | //\r | |
2587 | return EFI_INVALID_PARAMETER;\r | |
2588 | }\r | |
2589 | } else if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r | |
2590 | if (PcdGet32 (PcdHwErrStorageSize) == 0) {\r | |
2591 | //\r | |
2592 | // Not support harware error record variable variable.\r | |
2593 | //\r | |
2594 | return EFI_INVALID_PARAMETER;\r | |
2595 | }\r | |
2596 | }\r | |
2597 | \r | |
2598 | //\r | |
2599 | // EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS and EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute\r | |
2600 | // cannot be set both.\r | |
2601 | //\r | |
2602 | if (((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r | |
2603 | && ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)) {\r | |
67943427 | 2604 | return EFI_UNSUPPORTED;\r |
72399dae | 2605 | }\r |
2606 | \r | |
fa0737a8 | 2607 | if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) {\r |
67943427 | 2608 | //\r |
2609 | // If DataSize == AUTHINFO_SIZE and then PayloadSize is 0.\r | |
2610 | // Maybe it's the delete operation of common authenticated variable at user physical presence.\r | |
2611 | //\r | |
2612 | if (DataSize != AUTHINFO_SIZE) {\r | |
2613 | return EFI_UNSUPPORTED;\r | |
fa0737a8 SZ |
2614 | }\r |
2615 | PayloadSize = DataSize - AUTHINFO_SIZE;\r | |
2616 | } else if ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) {\r | |
2617 | //\r | |
2618 | // Sanity check for EFI_VARIABLE_AUTHENTICATION_2 descriptor.\r | |
2619 | //\r | |
2620 | if (DataSize < OFFSET_OF_AUTHINFO2_CERT_DATA ||\r | |
2621 | ((EFI_VARIABLE_AUTHENTICATION_2 *) Data)->AuthInfo.Hdr.dwLength > DataSize - (OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) ||\r | |
2622 | ((EFI_VARIABLE_AUTHENTICATION_2 *) Data)->AuthInfo.Hdr.dwLength < OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)) {\r | |
2623 | return EFI_SECURITY_VIOLATION;\r | |
2624 | }\r | |
e83d841f | 2625 | //\r |
49395ea0 HW |
2626 | // The VariableSpeculationBarrier() call here is to ensure the above sanity\r |
2627 | // check for the EFI_VARIABLE_AUTHENTICATION_2 descriptor has been completed\r | |
e83d841f HW |
2628 | // before the execution of subsequent codes.\r |
2629 | //\r | |
49395ea0 | 2630 | VariableSpeculationBarrier ();\r |
fa0737a8 SZ |
2631 | PayloadSize = DataSize - AUTHINFO2_SIZE (Data);\r |
2632 | } else {\r | |
2633 | PayloadSize = DataSize;\r | |
2634 | }\r | |
2635 | \r | |
2636 | if ((UINTN)(~0) - PayloadSize < StrSize(VariableName)){\r | |
2637 | //\r | |
2638 | // Prevent whole variable size overflow\r | |
56251c66 | 2639 | //\r |
56251c66 | 2640 | return EFI_INVALID_PARAMETER;\r |
2641 | }\r | |
2642 | \r | |
72399dae | 2643 | //\r |
2644 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
188e4e84 | 2645 | // the DataSize is limited to maximum size of PcdGet32 (PcdMaxHardwareErrorVariableSize)\r |
fa0737a8 | 2646 | // bytes for HwErrRec#### variable.\r |
72399dae | 2647 | //\r |
2648 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
04401023 MK |
2649 | if (StrSize (VariableName) + PayloadSize >\r |
2650 | PcdGet32 (PcdMaxHardwareErrorVariableSize) - GetVariableHeaderSize (AuthFormat)) {\r | |
72399dae | 2651 | return EFI_INVALID_PARAMETER;\r |
2652 | }\r | |
72399dae | 2653 | } else {\r |
2654 | //\r | |
2655 | // The size of the VariableName, including the Unicode Null in bytes plus\r | |
9b4a2032 | 2656 | // the DataSize is limited to maximum size of Max(Auth|Volatile)VariableSize bytes.\r |
72399dae | 2657 | //\r |
fa0737a8 | 2658 | if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r |
04401023 MK |
2659 | if (StrSize (VariableName) + PayloadSize >\r |
2660 | mVariableModuleGlobal->MaxAuthVariableSize -\r | |
2661 | GetVariableHeaderSize (AuthFormat)) {\r | |
a90c7df7 VS |
2662 | DEBUG ((DEBUG_ERROR,\r |
2663 | "%a: Failed to set variable '%s' with Guid %g\n",\r | |
2664 | __FUNCTION__, VariableName, VendorGuid));\r | |
2665 | DEBUG ((DEBUG_ERROR,\r | |
2666 | "NameSize(0x%x) + PayloadSize(0x%x) > "\r | |
2667 | "MaxAuthVariableSize(0x%x) - HeaderSize(0x%x)\n",\r | |
2668 | StrSize (VariableName), PayloadSize,\r | |
2669 | mVariableModuleGlobal->MaxAuthVariableSize,\r | |
04401023 | 2670 | GetVariableHeaderSize (AuthFormat)\r |
a90c7df7 | 2671 | ));\r |
fa0737a8 SZ |
2672 | return EFI_INVALID_PARAMETER;\r |
2673 | }\r | |
9b4a2032 | 2674 | } else if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
04401023 MK |
2675 | if (StrSize (VariableName) + PayloadSize >\r |
2676 | mVariableModuleGlobal->MaxVariableSize - GetVariableHeaderSize (AuthFormat)) {\r | |
a90c7df7 VS |
2677 | DEBUG ((DEBUG_ERROR,\r |
2678 | "%a: Failed to set variable '%s' with Guid %g\n",\r | |
2679 | __FUNCTION__, VariableName, VendorGuid));\r | |
2680 | DEBUG ((DEBUG_ERROR,\r | |
2681 | "NameSize(0x%x) + PayloadSize(0x%x) > "\r | |
2682 | "MaxVariableSize(0x%x) - HeaderSize(0x%x)\n",\r | |
2683 | StrSize (VariableName), PayloadSize,\r | |
2684 | mVariableModuleGlobal->MaxVariableSize,\r | |
04401023 | 2685 | GetVariableHeaderSize (AuthFormat)\r |
a90c7df7 | 2686 | ));\r |
fa0737a8 SZ |
2687 | return EFI_INVALID_PARAMETER;\r |
2688 | }\r | |
9b4a2032 | 2689 | } else {\r |
04401023 MK |
2690 | if (StrSize (VariableName) + PayloadSize >\r |
2691 | mVariableModuleGlobal->MaxVolatileVariableSize - GetVariableHeaderSize (AuthFormat)) {\r | |
a90c7df7 VS |
2692 | DEBUG ((DEBUG_ERROR,\r |
2693 | "%a: Failed to set variable '%s' with Guid %g\n",\r | |
2694 | __FUNCTION__, VariableName, VendorGuid));\r | |
2695 | DEBUG ((DEBUG_ERROR,\r | |
2696 | "NameSize(0x%x) + PayloadSize(0x%x) > "\r | |
2697 | "MaxVolatileVariableSize(0x%x) - HeaderSize(0x%x)\n",\r | |
2698 | StrSize (VariableName), PayloadSize,\r | |
2699 | mVariableModuleGlobal->MaxVolatileVariableSize,\r | |
04401023 | 2700 | GetVariableHeaderSize (AuthFormat)\r |
a90c7df7 | 2701 | ));\r |
9b4a2032 LE |
2702 | return EFI_INVALID_PARAMETER;\r |
2703 | }\r | |
efb01a10 | 2704 | }\r |
6675a21f SZ |
2705 | }\r |
2706 | \r | |
2f6aa774 JY |
2707 | //\r |
2708 | // Special Handling for MOR Lock variable.\r | |
2709 | //\r | |
2710 | Status = SetVariableCheckHandlerMor (VariableName, VendorGuid, Attributes, PayloadSize, (VOID *) ((UINTN) Data + DataSize - PayloadSize));\r | |
2711 | if (Status == EFI_ALREADY_STARTED) {\r | |
2712 | //\r | |
2713 | // EFI_ALREADY_STARTED means the SetVariable() action is handled inside of SetVariableCheckHandlerMor().\r | |
2714 | // Variable driver can just return SUCCESS.\r | |
2715 | //\r | |
2716 | return EFI_SUCCESS;\r | |
2717 | }\r | |
2718 | if (EFI_ERROR (Status)) {\r | |
2719 | return Status;\r | |
2720 | }\r | |
2721 | \r | |
8021f4c7 | 2722 | Status = VarCheckLibSetVariableCheck (VariableName, VendorGuid, Attributes, PayloadSize, (VOID *) ((UINTN) Data + DataSize - PayloadSize), mRequestSource);\r |
fa0737a8 SZ |
2723 | if (EFI_ERROR (Status)) {\r |
2724 | return Status;\r | |
2725 | }\r | |
2726 | \r | |
72399dae | 2727 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
2728 | \r | |
2729 | //\r | |
8a2d4996 | 2730 | // Consider reentrant in MCA/INIT/NMI. It needs be reupdated.\r |
72399dae | 2731 | //\r |
2732 | if (1 < InterlockedIncrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState)) {\r | |
8a2d4996 | 2733 | Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r |
72399dae | 2734 | //\r |
8a2d4996 | 2735 | // Parse non-volatile variable data and get last variable offset.\r |
72399dae | 2736 | //\r |
2737 | NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point);\r | |
6ebffb67 | 2738 | while (IsValidVariableHeader (NextVariable, GetEndPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point))) {\r |
04401023 | 2739 | NextVariable = GetNextVariablePtr (NextVariable, AuthFormat);\r |
72399dae | 2740 | }\r |
2741 | mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) Point;\r | |
2742 | }\r | |
2743 | \r | |
2744 | //\r | |
8a2d4996 | 2745 | // Check whether the input variable is already existed.\r |
72399dae | 2746 | //\r |
9622df63 SZ |
2747 | Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, TRUE);\r |
2748 | if (!EFI_ERROR (Status)) {\r | |
2749 | if (((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) && AtRuntime ()) {\r | |
ff843847 RN |
2750 | Status = EFI_WRITE_PROTECTED;\r |
2751 | goto Done;\r | |
9622df63 | 2752 | }\r |
fa0737a8 | 2753 | if (Attributes != 0 && (Attributes & (~EFI_VARIABLE_APPEND_WRITE)) != Variable.CurrPtr->Attributes) {\r |
6e67fec0 SZ |
2754 | //\r |
2755 | // If a preexisting variable is rewritten with different attributes, SetVariable() shall not\r | |
2756 | // modify the variable and shall return EFI_INVALID_PARAMETER. Two exceptions to this rule:\r | |
2757 | // 1. No access attributes specified\r | |
2758 | // 2. The only attribute differing is EFI_VARIABLE_APPEND_WRITE\r | |
2759 | //\r | |
2760 | Status = EFI_INVALID_PARAMETER;\r | |
4edb1866 | 2761 | DEBUG ((EFI_D_INFO, "[Variable]: Rewritten a preexisting variable(0x%08x) with different attributes(0x%08x) - %g:%s\n", Variable.CurrPtr->Attributes, Attributes, VendorGuid, VariableName));\r |
6e67fec0 SZ |
2762 | goto Done;\r |
2763 | }\r | |
9622df63 | 2764 | }\r |
72399dae | 2765 | \r |
b2bd493e | 2766 | if (!FeaturePcdGet (PcdUefiVariableDefaultLangDeprecate)) {\r |
9bc5dabb | 2767 | //\r |
b2bd493e | 2768 | // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang.\r |
9bc5dabb | 2769 | //\r |
b2bd493e SZ |
2770 | Status = AutoUpdateLangVariable (VariableName, Data, DataSize);\r |
2771 | if (EFI_ERROR (Status)) {\r | |
2772 | //\r | |
2773 | // The auto update operation failed, directly return to avoid inconsistency between PlatformLang and Lang.\r | |
2774 | //\r | |
2775 | goto Done;\r | |
2776 | }\r | |
9bc5dabb | 2777 | }\r |
72399dae | 2778 | \r |
fa0737a8 SZ |
2779 | if (mVariableModuleGlobal->VariableGlobal.AuthSupport) {\r |
2780 | Status = AuthVariableLibProcessVariable (VariableName, VendorGuid, Data, DataSize, Attributes);\r | |
2781 | } else {\r | |
2782 | Status = UpdateVariable (VariableName, VendorGuid, Data, DataSize, Attributes, 0, 0, &Variable, NULL);\r | |
2783 | }\r | |
72399dae | 2784 | \r |
ff843847 | 2785 | Done:\r |
fdb7765f | 2786 | InterlockedDecrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState);\r |
052ad7e1 | 2787 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
fdb7765f | 2788 | \r |
fa0737a8 SZ |
2789 | if (!AtRuntime ()) {\r |
2790 | if (!EFI_ERROR (Status)) {\r | |
2791 | SecureBootHook (\r | |
2792 | VariableName,\r | |
2793 | VendorGuid\r | |
2794 | );\r | |
2795 | }\r | |
2796 | }\r | |
2797 | \r | |
8d3a5c82 | 2798 | return Status;\r |
2799 | }\r | |
2800 | \r | |
7c80e839 | 2801 | /**\r |
8d3a5c82 | 2802 | \r |
2803 | This code returns information about the EFI variables.\r | |
2804 | \r | |
18a7dbbc SZ |
2805 | Caution: This function may receive untrusted input.\r |
2806 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
2807 | \r | |
7c80e839 | 2808 | @param Attributes Attributes bitmask to specify the type of variables\r |
2809 | on which to return information.\r | |
2810 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
2811 | for the EFI variables associated with the attributes specified.\r | |
2812 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
2813 | for EFI variables associated with the attributes specified.\r | |
2814 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
2815 | associated with the attributes specified.\r | |
8d3a5c82 | 2816 | \r |
7c80e839 | 2817 | @return EFI_SUCCESS Query successfully.\r |
8d3a5c82 | 2818 | \r |
7c80e839 | 2819 | **/\r |
052ad7e1 A |
2820 | EFI_STATUS\r |
2821 | EFIAPI\r | |
b2bd493e | 2822 | VariableServiceQueryVariableInfoInternal (\r |
052ad7e1 A |
2823 | IN UINT32 Attributes,\r |
2824 | OUT UINT64 *MaximumVariableStorageSize,\r | |
2825 | OUT UINT64 *RemainingVariableStorageSize,\r | |
2826 | OUT UINT64 *MaximumVariableSize\r | |
2827 | )\r | |
8d3a5c82 | 2828 | {\r |
2829 | VARIABLE_HEADER *Variable;\r | |
2830 | VARIABLE_HEADER *NextVariable;\r | |
2831 | UINT64 VariableSize;\r | |
2832 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
2fcdca1d | 2833 | UINT64 CommonVariableTotalSize;\r |
2834 | UINT64 HwErrVariableTotalSize;\r | |
b2bd493e SZ |
2835 | EFI_STATUS Status;\r |
2836 | VARIABLE_POINTER_TRACK VariablePtrTrack;\r | |
2fcdca1d | 2837 | \r |
2838 | CommonVariableTotalSize = 0;\r | |
2839 | HwErrVariableTotalSize = 0;\r | |
8d3a5c82 | 2840 | \r |
8d3a5c82 | 2841 | if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r |
2842 | //\r | |
2843 | // Query is Volatile related.\r | |
2844 | //\r | |
052ad7e1 | 2845 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r |
8d3a5c82 | 2846 | } else {\r |
2847 | //\r | |
2848 | // Query is Non-Volatile related.\r | |
2849 | //\r | |
8a2d4996 | 2850 | VariableStoreHeader = mNvVariableCache;\r |
8d3a5c82 | 2851 | }\r |
2852 | \r | |
2853 | //\r | |
2854 | // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize\r | |
2855 | // with the storage size (excluding the storage header size).\r | |
2856 | //\r | |
2857 | *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r | |
c6492839 | 2858 | \r |
2859 | //\r | |
2860 | // Harware error record variable needs larger size.\r | |
2861 | //\r | |
2fcdca1d | 2862 | if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r |
188e4e84 | 2863 | *MaximumVariableStorageSize = PcdGet32 (PcdHwErrStorageSize);\r |
04401023 MK |
2864 | *MaximumVariableSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) -\r |
2865 | GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
2fcdca1d | 2866 | } else {\r |
2867 | if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r | |
4edb1866 SZ |
2868 | if (AtRuntime ()) {\r |
2869 | *MaximumVariableStorageSize = mVariableModuleGlobal->CommonRuntimeVariableSpace;\r | |
2870 | } else {\r | |
2871 | *MaximumVariableStorageSize = mVariableModuleGlobal->CommonVariableSpace;\r | |
2872 | }\r | |
2fcdca1d | 2873 | }\r |
2874 | \r | |
2875 | //\r | |
9b4a2032 | 2876 | // Let *MaximumVariableSize be Max(Auth|Volatile)VariableSize with the exception of the variable header size.\r |
2fcdca1d | 2877 | //\r |
fa0737a8 | 2878 | if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r |
04401023 MK |
2879 | *MaximumVariableSize = mVariableModuleGlobal->MaxAuthVariableSize -\r |
2880 | GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
9b4a2032 | 2881 | } else if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r |
04401023 MK |
2882 | *MaximumVariableSize = mVariableModuleGlobal->MaxVariableSize -\r |
2883 | GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
9b4a2032 | 2884 | } else {\r |
04401023 MK |
2885 | *MaximumVariableSize = mVariableModuleGlobal->MaxVolatileVariableSize -\r |
2886 | GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
fa0737a8 | 2887 | }\r |
c6492839 | 2888 | }\r |
8d3a5c82 | 2889 | \r |
2890 | //\r | |
2891 | // Point to the starting address of the variables.\r | |
2892 | //\r | |
9cad030b | 2893 | Variable = GetStartPointer (VariableStoreHeader);\r |
8d3a5c82 | 2894 | \r |
2895 | //\r | |
2896 | // Now walk through the related variable store.\r | |
2897 | //\r | |
6ebffb67 | 2898 | while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r |
04401023 | 2899 | NextVariable = GetNextVariablePtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
8d3a5c82 | 2900 | VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r |
2901 | \r | |
8a2d4996 | 2902 | if (AtRuntime ()) {\r |
8d3a5c82 | 2903 | //\r |
8a2d4996 | 2904 | // We don't take the state of the variables in mind\r |
8d3a5c82 | 2905 | // when calculating RemainingVariableStorageSize,\r |
2906 | // since the space occupied by variables not marked with\r | |
2907 | // VAR_ADDED is not allowed to be reclaimed in Runtime.\r | |
2908 | //\r | |
3b425367 | 2909 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
2fcdca1d | 2910 | HwErrVariableTotalSize += VariableSize;\r |
2911 | } else {\r | |
2912 | CommonVariableTotalSize += VariableSize;\r | |
2913 | }\r | |
8d3a5c82 | 2914 | } else {\r |
2915 | //\r | |
8a2d4996 | 2916 | // Only care about Variables with State VAR_ADDED, because\r |
8d3a5c82 | 2917 | // the space not marked as VAR_ADDED is reclaimable now.\r |
2918 | //\r | |
2919 | if (Variable->State == VAR_ADDED) {\r | |
3b425367 | 2920 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r |
2fcdca1d | 2921 | HwErrVariableTotalSize += VariableSize;\r |
2922 | } else {\r | |
2923 | CommonVariableTotalSize += VariableSize;\r | |
2924 | }\r | |
b2bd493e SZ |
2925 | } else if (Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r |
2926 | //\r | |
2927 | // If it is a IN_DELETED_TRANSITION variable,\r | |
2928 | // and there is not also a same ADDED one at the same time,\r | |
2929 | // this IN_DELETED_TRANSITION variable is valid.\r | |
2930 | //\r | |
2931 | VariablePtrTrack.StartPtr = GetStartPointer (VariableStoreHeader);\r | |
2932 | VariablePtrTrack.EndPtr = GetEndPointer (VariableStoreHeader);\r | |
2933 | Status = FindVariableEx (\r | |
04401023 MK |
2934 | GetVariableNamePtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r |
2935 | GetVendorGuidPtr (Variable, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r | |
b2bd493e | 2936 | FALSE,\r |
04401023 MK |
2937 | &VariablePtrTrack,\r |
2938 | mVariableModuleGlobal->VariableGlobal.AuthFormat\r | |
b2bd493e SZ |
2939 | );\r |
2940 | if (!EFI_ERROR (Status) && VariablePtrTrack.CurrPtr->State != VAR_ADDED) {\r | |
2941 | if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
2942 | HwErrVariableTotalSize += VariableSize;\r | |
2943 | } else {\r | |
2944 | CommonVariableTotalSize += VariableSize;\r | |
2945 | }\r | |
2946 | }\r | |
8d3a5c82 | 2947 | }\r |
2948 | }\r | |
2949 | \r | |
2950 | //\r | |
8a2d4996 | 2951 | // Go to the next one.\r |
8d3a5c82 | 2952 | //\r |
2953 | Variable = NextVariable;\r | |
2954 | }\r | |
2955 | \r | |
2fcdca1d | 2956 | if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD){\r |
2957 | *RemainingVariableStorageSize = *MaximumVariableStorageSize - HwErrVariableTotalSize;\r | |
4edb1866 SZ |
2958 | } else {\r |
2959 | if (*MaximumVariableStorageSize < CommonVariableTotalSize) {\r | |
2960 | *RemainingVariableStorageSize = 0;\r | |
2961 | } else {\r | |
2962 | *RemainingVariableStorageSize = *MaximumVariableStorageSize - CommonVariableTotalSize;\r | |
2963 | }\r | |
2fcdca1d | 2964 | }\r |
2965 | \r | |
04401023 | 2966 | if (*RemainingVariableStorageSize < GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat)) {\r |
c6492839 | 2967 | *MaximumVariableSize = 0;\r |
04401023 MK |
2968 | } else if ((*RemainingVariableStorageSize - GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat)) <\r |
2969 | *MaximumVariableSize\r | |
2970 | ) {\r | |
2971 | *MaximumVariableSize = *RemainingVariableStorageSize -\r | |
2972 | GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
c6492839 | 2973 | }\r |
2974 | \r | |
8d3a5c82 | 2975 | return EFI_SUCCESS;\r |
2976 | }\r | |
2977 | \r | |
b2bd493e SZ |
2978 | /**\r |
2979 | \r | |
2980 | This code returns information about the EFI variables.\r | |
2981 | \r | |
18a7dbbc SZ |
2982 | Caution: This function may receive untrusted input.\r |
2983 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
2984 | \r | |
b2bd493e SZ |
2985 | @param Attributes Attributes bitmask to specify the type of variables\r |
2986 | on which to return information.\r | |
2987 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
2988 | for the EFI variables associated with the attributes specified.\r | |
2989 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
2990 | for EFI variables associated with the attributes specified.\r | |
2991 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
2992 | associated with the attributes specified.\r | |
2993 | \r | |
2994 | @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r | |
2995 | @return EFI_SUCCESS Query successfully.\r | |
2996 | @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r | |
2997 | \r | |
2998 | **/\r | |
2999 | EFI_STATUS\r | |
3000 | EFIAPI\r | |
3001 | VariableServiceQueryVariableInfo (\r | |
3002 | IN UINT32 Attributes,\r | |
3003 | OUT UINT64 *MaximumVariableStorageSize,\r | |
3004 | OUT UINT64 *RemainingVariableStorageSize,\r | |
3005 | OUT UINT64 *MaximumVariableSize\r | |
3006 | )\r | |
3007 | {\r | |
3008 | EFI_STATUS Status;\r | |
3009 | \r | |
3010 | if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r | |
3011 | return EFI_INVALID_PARAMETER;\r | |
3012 | }\r | |
3013 | \r | |
67943427 | 3014 | if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r |
3015 | //\r | |
3016 | // Deprecated attribute, make this check as highest priority.\r | |
3017 | //\r | |
3018 | return EFI_UNSUPPORTED;\r | |
3019 | }\r | |
3020 | \r | |
fa0737a8 | 3021 | if ((Attributes & EFI_VARIABLE_ATTRIBUTES_MASK) == 0) {\r |
b2bd493e SZ |
3022 | //\r |
3023 | // Make sure the Attributes combination is supported by the platform.\r | |
3024 | //\r | |
3025 | return EFI_UNSUPPORTED;\r | |
3026 | } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r | |
3027 | //\r | |
3028 | // Make sure if runtime bit is set, boot service bit is set also.\r | |
3029 | //\r | |
3030 | return EFI_INVALID_PARAMETER;\r | |
3031 | } else if (AtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r | |
3032 | //\r | |
3033 | // Make sure RT Attribute is set if we are in Runtime phase.\r | |
3034 | //\r | |
3035 | return EFI_INVALID_PARAMETER;\r | |
3036 | } else if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r | |
3037 | //\r | |
3038 | // Make sure Hw Attribute is set with NV.\r | |
3039 | //\r | |
3040 | return EFI_INVALID_PARAMETER;\r | |
fa0737a8 SZ |
3041 | } else if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r |
3042 | if (!mVariableModuleGlobal->VariableGlobal.AuthSupport) {\r | |
3043 | //\r | |
3044 | // Not support authenticated variable write.\r | |
3045 | //\r | |
3046 | return EFI_UNSUPPORTED;\r | |
3047 | }\r | |
3048 | } else if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r | |
3049 | if (PcdGet32 (PcdHwErrStorageSize) == 0) {\r | |
3050 | //\r | |
3051 | // Not support harware error record variable variable.\r | |
3052 | //\r | |
3053 | return EFI_UNSUPPORTED;\r | |
3054 | }\r | |
b2bd493e SZ |
3055 | }\r |
3056 | \r | |
3057 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
3058 | \r | |
3059 | Status = VariableServiceQueryVariableInfoInternal (\r | |
3060 | Attributes,\r | |
3061 | MaximumVariableStorageSize,\r | |
3062 | RemainingVariableStorageSize,\r | |
3063 | MaximumVariableSize\r | |
3064 | );\r | |
3065 | \r | |
3066 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r | |
3067 | return Status;\r | |
3068 | }\r | |
7c80e839 | 3069 | \r |
3070 | /**\r | |
8a2d4996 | 3071 | This function reclaims variable storage if free size is below the threshold.\r |
18a7dbbc SZ |
3072 | \r |
3073 | Caution: This function may be invoked at SMM mode.\r | |
3074 | Care must be taken to make sure not security issue.\r | |
3075 | \r | |
7c80e839 | 3076 | **/\r |
7800593d | 3077 | VOID\r |
7800593d | 3078 | ReclaimForOS(\r |
8a2d4996 | 3079 | VOID\r |
7800593d LG |
3080 | )\r |
3081 | {\r | |
9948c0b0 | 3082 | EFI_STATUS Status;\r |
4edb1866 | 3083 | UINTN RemainingCommonRuntimeVariableSpace;\r |
2fcdca1d | 3084 | UINTN RemainingHwErrVariableSpace;\r |
0fb5e515 SZ |
3085 | STATIC BOOLEAN Reclaimed;\r |
3086 | \r | |
3087 | //\r | |
3088 | // This function will be called only once at EndOfDxe or ReadyToBoot event.\r | |
3089 | //\r | |
3090 | if (Reclaimed) {\r | |
3091 | return;\r | |
3092 | }\r | |
3093 | Reclaimed = TRUE;\r | |
7800593d | 3094 | \r |
4edb1866 | 3095 | Status = EFI_SUCCESS;\r |
7800593d | 3096 | \r |
4edb1866 SZ |
3097 | if (mVariableModuleGlobal->CommonRuntimeVariableSpace < mVariableModuleGlobal->CommonVariableTotalSize) {\r |
3098 | RemainingCommonRuntimeVariableSpace = 0;\r | |
3099 | } else {\r | |
3100 | RemainingCommonRuntimeVariableSpace = mVariableModuleGlobal->CommonRuntimeVariableSpace - mVariableModuleGlobal->CommonVariableTotalSize;\r | |
3101 | }\r | |
2fcdca1d | 3102 | \r |
3103 | RemainingHwErrVariableSpace = PcdGet32 (PcdHwErrStorageSize) - mVariableModuleGlobal->HwErrVariableTotalSize;\r | |
fa0737a8 | 3104 | \r |
7800593d | 3105 | //\r |
4edb1866 | 3106 | // Check if the free area is below a threshold.\r |
7800593d | 3107 | //\r |
fa0737a8 SZ |
3108 | if (((RemainingCommonRuntimeVariableSpace < mVariableModuleGlobal->MaxVariableSize) ||\r |
3109 | (RemainingCommonRuntimeVariableSpace < mVariableModuleGlobal->MaxAuthVariableSize)) ||\r | |
3110 | ((PcdGet32 (PcdHwErrStorageSize) != 0) &&\r | |
9948c0b0 | 3111 | (RemainingHwErrVariableSpace < PcdGet32 (PcdMaxHardwareErrorVariableSize)))){\r |
7800593d | 3112 | Status = Reclaim (\r |
2fcdca1d | 3113 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r |
3114 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
3115 | FALSE,\r | |
335e2681 | 3116 | NULL,\r |
7baf3c69 SZ |
3117 | NULL,\r |
3118 | 0\r | |
2fcdca1d | 3119 | );\r |
7800593d LG |
3120 | ASSERT_EFI_ERROR (Status);\r |
3121 | }\r | |
3122 | }\r | |
3123 | \r | |
9b4a2032 LE |
3124 | /**\r |
3125 | Get maximum variable size, covering both non-volatile and volatile variables.\r | |
3126 | \r | |
3127 | @return Maximum variable size.\r | |
3128 | \r | |
3129 | **/\r | |
3130 | UINTN\r | |
3131 | GetMaxVariableSize (\r | |
3132 | VOID\r | |
3133 | )\r | |
3134 | {\r | |
3135 | UINTN MaxVariableSize;\r | |
3136 | \r | |
3137 | MaxVariableSize = GetNonVolatileMaxVariableSize();\r | |
3138 | //\r | |
3139 | // The condition below fails implicitly if PcdMaxVolatileVariableSize equals\r | |
3140 | // the default zero value.\r | |
3141 | //\r | |
3142 | if (MaxVariableSize < PcdGet32 (PcdMaxVolatileVariableSize)) {\r | |
3143 | MaxVariableSize = PcdGet32 (PcdMaxVolatileVariableSize);\r | |
3144 | }\r | |
3145 | return MaxVariableSize;\r | |
3146 | }\r | |
3147 | \r | |
335e2681 SZ |
3148 | /**\r |
3149 | Flush the HOB variable to flash.\r | |
3150 | \r | |
3151 | @param[in] VariableName Name of variable has been updated or deleted.\r | |
3152 | @param[in] VendorGuid Guid of variable has been updated or deleted.\r | |
3153 | \r | |
3154 | **/\r | |
3155 | VOID\r | |
3156 | FlushHobVariableToFlash (\r | |
3157 | IN CHAR16 *VariableName,\r | |
3158 | IN EFI_GUID *VendorGuid\r | |
3159 | )\r | |
3160 | {\r | |
3161 | EFI_STATUS Status;\r | |
3162 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
3163 | VARIABLE_HEADER *Variable;\r | |
3164 | VOID *VariableData;\r | |
31349131 | 3165 | VARIABLE_POINTER_TRACK VariablePtrTrack;\r |
335e2681 | 3166 | BOOLEAN ErrorFlag;\r |
04401023 | 3167 | BOOLEAN AuthFormat;\r |
335e2681 SZ |
3168 | \r |
3169 | ErrorFlag = FALSE;\r | |
04401023 | 3170 | AuthFormat = mVariableModuleGlobal->VariableGlobal.AuthFormat;\r |
335e2681 SZ |
3171 | \r |
3172 | //\r | |
3173 | // Flush the HOB variable to flash.\r | |
3174 | //\r | |
3175 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r | |
3176 | VariableStoreHeader = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r | |
3177 | //\r | |
3178 | // Set HobVariableBase to 0, it can avoid SetVariable to call back.\r | |
3179 | //\r | |
3180 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = 0;\r | |
3181 | for ( Variable = GetStartPointer (VariableStoreHeader)\r | |
6ebffb67 | 3182 | ; IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))\r |
04401023 | 3183 | ; Variable = GetNextVariablePtr (Variable, AuthFormat)\r |
335e2681 SZ |
3184 | ) {\r |
3185 | if (Variable->State != VAR_ADDED) {\r | |
3186 | //\r | |
3187 | // The HOB variable has been set to DELETED state in local.\r | |
3188 | //\r | |
3189 | continue;\r | |
3190 | }\r | |
3191 | ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);\r | |
3192 | if (VendorGuid == NULL || VariableName == NULL ||\r | |
04401023 MK |
3193 | !CompareGuid (VendorGuid, GetVendorGuidPtr (Variable, AuthFormat)) ||\r |
3194 | StrCmp (VariableName, GetVariableNamePtr (Variable, AuthFormat)) != 0) {\r | |
3195 | VariableData = GetVariableDataPtr (Variable, AuthFormat);\r | |
3196 | FindVariable (\r | |
3197 | GetVariableNamePtr (Variable, AuthFormat),\r | |
3198 | GetVendorGuidPtr (Variable, AuthFormat),\r | |
3199 | &VariablePtrTrack,\r | |
3200 | &mVariableModuleGlobal->VariableGlobal, FALSE\r | |
3201 | );\r | |
31349131 | 3202 | Status = UpdateVariable (\r |
04401023 MK |
3203 | GetVariableNamePtr (Variable, AuthFormat),\r |
3204 | GetVendorGuidPtr (Variable, AuthFormat),\r | |
31349131 | 3205 | VariableData,\r |
04401023 | 3206 | DataSizeOfVariable (Variable, AuthFormat),\r |
31349131 SZ |
3207 | Variable->Attributes,\r |
3208 | 0,\r | |
3209 | 0,\r | |
3210 | &VariablePtrTrack,\r | |
3211 | NULL\r | |
3212 | );\r | |
04401023 MK |
3213 | DEBUG ((\r |
3214 | DEBUG_INFO,\r | |
3215 | "Variable driver flush the HOB variable to flash: %g %s %r\n",\r | |
3216 | GetVendorGuidPtr (Variable, AuthFormat),\r | |
3217 | GetVariableNamePtr (Variable, AuthFormat),\r | |
3218 | Status\r | |
3219 | ));\r | |
335e2681 SZ |
3220 | } else {\r |
3221 | //\r | |
31349131 | 3222 | // The updated or deleted variable is matched with this HOB variable.\r |
335e2681 SZ |
3223 | // Don't break here because we will try to set other HOB variables\r |
3224 | // since this variable could be set successfully.\r | |
3225 | //\r | |
3226 | Status = EFI_SUCCESS;\r | |
3227 | }\r | |
3228 | if (!EFI_ERROR (Status)) {\r | |
3229 | //\r | |
3230 | // If set variable successful, or the updated or deleted variable is matched with the HOB variable,\r | |
3231 | // set the HOB variable to DELETED state in local.\r | |
3232 | //\r | |
04401023 MK |
3233 | DEBUG ((\r |
3234 | DEBUG_INFO,\r | |
3235 | "Variable driver set the HOB variable to DELETED state in local: %g %s\n",\r | |
3236 | GetVendorGuidPtr (Variable, AuthFormat),\r | |
3237 | GetVariableNamePtr (Variable, AuthFormat)\r | |
3238 | ));\r | |
335e2681 SZ |
3239 | Variable->State &= VAR_DELETED;\r |
3240 | } else {\r | |
3241 | ErrorFlag = TRUE;\r | |
3242 | }\r | |
3243 | }\r | |
aab3b9b9 MK |
3244 | if (mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeHobCache.Store != NULL) {\r |
3245 | Status = SynchronizeRuntimeVariableCache (\r | |
3246 | &mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeHobCache,\r | |
3247 | 0,\r | |
3248 | mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.VariableRuntimeHobCache.Store->Size\r | |
3249 | );\r | |
3250 | ASSERT_EFI_ERROR (Status);\r | |
3251 | }\r | |
335e2681 SZ |
3252 | if (ErrorFlag) {\r |
3253 | //\r | |
3254 | // We still have HOB variable(s) not flushed in flash.\r | |
3255 | //\r | |
3256 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStoreHeader;\r | |
3257 | } else {\r | |
3258 | //\r | |
3259 | // All HOB variables have been flushed in flash.\r | |
3260 | //\r | |
3261 | DEBUG ((EFI_D_INFO, "Variable driver: all HOB variables have been flushed in flash.\n"));\r | |
aab3b9b9 MK |
3262 | if (mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.HobFlushComplete != NULL) {\r |
3263 | *(mVariableModuleGlobal->VariableGlobal.VariableRuntimeCacheContext.HobFlushComplete) = TRUE;\r | |
3264 | }\r | |
335e2681 SZ |
3265 | if (!AtRuntime ()) {\r |
3266 | FreePool ((VOID *) VariableStoreHeader);\r | |
3267 | }\r | |
3268 | }\r | |
3269 | }\r | |
3270 | \r | |
3271 | }\r | |
8a2d4996 | 3272 | \r |
7c80e839 | 3273 | /**\r |
904e0ca9 | 3274 | Initializes variable write service.\r |
7c80e839 | 3275 | \r |
8a2d4996 | 3276 | @retval EFI_SUCCESS Function successfully executed.\r |
3277 | @retval Others Fail to initialize the variable service.\r | |
3278 | \r | |
3279 | **/\r | |
3280 | EFI_STATUS\r | |
3281 | VariableWriteServiceInitialize (\r | |
3282 | VOID\r | |
3283 | )\r | |
3284 | {\r | |
3285 | EFI_STATUS Status;\r | |
8a2d4996 | 3286 | UINTN Index;\r |
3287 | UINT8 Data;\r | |
fa0737a8 | 3288 | VARIABLE_ENTRY_PROPERTY *VariableEntry;\r |
8a2d4996 | 3289 | \r |
31349131 SZ |
3290 | AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
3291 | \r | |
8a2d4996 | 3292 | //\r |
3293 | // Check if the free area is really free.\r | |
3294 | //\r | |
9b18845a | 3295 | for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < mNvVariableCache->Size; Index++) {\r |
8a2d4996 | 3296 | Data = ((UINT8 *) mNvVariableCache)[Index];\r |
3297 | if (Data != 0xff) {\r | |
3298 | //\r | |
3299 | // There must be something wrong in variable store, do reclaim operation.\r | |
3300 | //\r | |
3301 | Status = Reclaim (\r | |
3302 | mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r | |
3303 | &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r | |
3304 | FALSE,\r | |
335e2681 | 3305 | NULL,\r |
7baf3c69 SZ |
3306 | NULL,\r |
3307 | 0\r | |
8a2d4996 | 3308 | );\r |
3309 | if (EFI_ERROR (Status)) {\r | |
31349131 | 3310 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
8a2d4996 | 3311 | return Status;\r |
3312 | }\r | |
3313 | break;\r | |
3314 | }\r | |
3315 | }\r | |
3316 | \r | |
335e2681 | 3317 | FlushHobVariableToFlash (NULL, NULL);\r |
0f7aff72 | 3318 | \r |
fa0737a8 | 3319 | Status = EFI_SUCCESS;\r |
8021f4c7 | 3320 | ZeroMem (&mAuthContextOut, sizeof (mAuthContextOut));\r |
fa0737a8 SZ |
3321 | if (mVariableModuleGlobal->VariableGlobal.AuthFormat) {\r |
3322 | //\r | |
3323 | // Authenticated variable initialize.\r | |
3324 | //\r | |
8021f4c7 | 3325 | mAuthContextIn.StructSize = sizeof (AUTH_VAR_LIB_CONTEXT_IN);\r |
04401023 MK |
3326 | mAuthContextIn.MaxAuthVariableSize = mVariableModuleGlobal->MaxAuthVariableSize -\r |
3327 | GetVariableHeaderSize (mVariableModuleGlobal->VariableGlobal.AuthFormat);\r | |
8021f4c7 | 3328 | Status = AuthVariableLibInitialize (&mAuthContextIn, &mAuthContextOut);\r |
fa0737a8 SZ |
3329 | if (!EFI_ERROR (Status)) {\r |
3330 | DEBUG ((EFI_D_INFO, "Variable driver will work with auth variable support!\n"));\r | |
3331 | mVariableModuleGlobal->VariableGlobal.AuthSupport = TRUE;\r | |
8021f4c7 SZ |
3332 | if (mAuthContextOut.AuthVarEntry != NULL) {\r |
3333 | for (Index = 0; Index < mAuthContextOut.AuthVarEntryCount; Index++) {\r | |
3334 | VariableEntry = &mAuthContextOut.AuthVarEntry[Index];\r | |
3335 | Status = VarCheckLibVariablePropertySet (\r | |
fa0737a8 SZ |
3336 | VariableEntry->Name,\r |
3337 | VariableEntry->Guid,\r | |
3338 | &VariableEntry->VariableProperty\r | |
3339 | );\r | |
3340 | ASSERT_EFI_ERROR (Status);\r | |
3341 | }\r | |
3342 | }\r | |
3343 | } else if (Status == EFI_UNSUPPORTED) {\r | |
3344 | DEBUG ((EFI_D_INFO, "NOTICE - AuthVariableLibInitialize() returns %r!\n", Status));\r | |
3345 | DEBUG ((EFI_D_INFO, "Variable driver will continue to work without auth variable support!\n"));\r | |
3346 | mVariableModuleGlobal->VariableGlobal.AuthSupport = FALSE;\r | |
3347 | Status = EFI_SUCCESS;\r | |
3348 | }\r | |
3349 | }\r | |
3350 | \r | |
3351 | if (!EFI_ERROR (Status)) {\r | |
33f615e2 | 3352 | for (Index = 0; Index < ARRAY_SIZE (mVariableEntryProperty); Index++) {\r |
fa0737a8 | 3353 | VariableEntry = &mVariableEntryProperty[Index];\r |
8021f4c7 | 3354 | Status = VarCheckLibVariablePropertySet (VariableEntry->Name, VariableEntry->Guid, &VariableEntry->VariableProperty);\r |
fa0737a8 SZ |
3355 | ASSERT_EFI_ERROR (Status);\r |
3356 | }\r | |
3357 | }\r | |
3358 | \r | |
31349131 | 3359 | ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r |
2f6aa774 JY |
3360 | \r |
3361 | //\r | |
3362 | // Initialize MOR Lock variable.\r | |
3363 | //\r | |
3364 | MorLockInit ();\r | |
3365 | \r | |
fa0737a8 | 3366 | return Status;\r |
8a2d4996 | 3367 | }\r |
3368 | \r | |
a37044ef LG |
3369 | /**\r |
3370 | Convert normal variable storage to the allocated auth variable storage.\r | |
3371 | \r | |
3372 | @param[in] NormalVarStorage Pointer to the normal variable storage header\r | |
3373 | \r | |
3374 | @retval the allocated auth variable storage\r | |
3375 | **/\r | |
3376 | VOID *\r | |
3377 | ConvertNormalVarStorageToAuthVarStorage (\r | |
3378 | VARIABLE_STORE_HEADER *NormalVarStorage\r | |
3379 | )\r | |
3380 | {\r | |
3381 | VARIABLE_HEADER *StartPtr;\r | |
3382 | UINT8 *NextPtr;\r | |
3383 | VARIABLE_HEADER *EndPtr;\r | |
3384 | UINTN AuthVarStroageSize;\r | |
3385 | AUTHENTICATED_VARIABLE_HEADER *AuthStartPtr;\r | |
3386 | VARIABLE_STORE_HEADER *AuthVarStorage;\r | |
3387 | \r | |
3388 | AuthVarStroageSize = sizeof (VARIABLE_STORE_HEADER);\r | |
3389 | //\r | |
3390 | // Set AuthFormat as FALSE for normal variable storage\r | |
3391 | //\r | |
3392 | mVariableModuleGlobal->VariableGlobal.AuthFormat = FALSE;\r | |
3393 | \r | |
3394 | //\r | |
3395 | // Calculate Auth Variable Storage Size\r | |
3396 | //\r | |
3397 | StartPtr = GetStartPointer (NormalVarStorage);\r | |
3398 | EndPtr = GetEndPointer (NormalVarStorage);\r | |
3399 | while (StartPtr < EndPtr) {\r | |
3400 | if (StartPtr->State == VAR_ADDED) {\r | |
3401 | AuthVarStroageSize = HEADER_ALIGN (AuthVarStroageSize);\r | |
3402 | AuthVarStroageSize += sizeof (AUTHENTICATED_VARIABLE_HEADER);\r | |
3403 | AuthVarStroageSize += StartPtr->NameSize + GET_PAD_SIZE (StartPtr->NameSize);\r | |
3404 | AuthVarStroageSize += StartPtr->DataSize + GET_PAD_SIZE (StartPtr->DataSize);\r | |
3405 | }\r | |
04401023 | 3406 | StartPtr = GetNextVariablePtr (StartPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
a37044ef LG |
3407 | }\r |
3408 | \r | |
3409 | //\r | |
3410 | // Allocate Runtime memory for Auth Variable Storage\r | |
3411 | //\r | |
3412 | AuthVarStorage = AllocateRuntimeZeroPool (AuthVarStroageSize);\r | |
3413 | ASSERT (AuthVarStorage != NULL);\r | |
3414 | if (AuthVarStorage == NULL) {\r | |
3415 | return NULL;\r | |
3416 | }\r | |
3417 | \r | |
3418 | //\r | |
3419 | // Copy Variable from Normal storage to Auth storage\r | |
3420 | //\r | |
3421 | StartPtr = GetStartPointer (NormalVarStorage);\r | |
3422 | EndPtr = GetEndPointer (NormalVarStorage);\r | |
3423 | AuthStartPtr = (AUTHENTICATED_VARIABLE_HEADER *) GetStartPointer (AuthVarStorage);\r | |
3424 | while (StartPtr < EndPtr) {\r | |
3425 | if (StartPtr->State == VAR_ADDED) {\r | |
3426 | AuthStartPtr = (AUTHENTICATED_VARIABLE_HEADER *) HEADER_ALIGN (AuthStartPtr);\r | |
3427 | //\r | |
3428 | // Copy Variable Header\r | |
3429 | //\r | |
3430 | AuthStartPtr->StartId = StartPtr->StartId;\r | |
3431 | AuthStartPtr->State = StartPtr->State;\r | |
3432 | AuthStartPtr->Attributes = StartPtr->Attributes;\r | |
3433 | AuthStartPtr->NameSize = StartPtr->NameSize;\r | |
3434 | AuthStartPtr->DataSize = StartPtr->DataSize;\r | |
3435 | CopyGuid (&AuthStartPtr->VendorGuid, &StartPtr->VendorGuid);\r | |
3436 | //\r | |
3437 | // Copy Variable Name\r | |
3438 | //\r | |
3439 | NextPtr = (UINT8 *) (AuthStartPtr + 1);\r | |
04401023 MK |
3440 | CopyMem (\r |
3441 | NextPtr,\r | |
3442 | GetVariableNamePtr (StartPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat),\r | |
3443 | AuthStartPtr->NameSize\r | |
3444 | );\r | |
a37044ef LG |
3445 | //\r |
3446 | // Copy Variable Data\r | |
3447 | //\r | |
3448 | NextPtr = NextPtr + AuthStartPtr->NameSize + GET_PAD_SIZE (AuthStartPtr->NameSize);\r | |
04401023 | 3449 | CopyMem (NextPtr, GetVariableDataPtr (StartPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat), AuthStartPtr->DataSize);\r |
a37044ef LG |
3450 | //\r |
3451 | // Go to next variable\r | |
3452 | //\r | |
3453 | AuthStartPtr = (AUTHENTICATED_VARIABLE_HEADER *) (NextPtr + AuthStartPtr->DataSize + GET_PAD_SIZE (AuthStartPtr->DataSize));\r | |
3454 | }\r | |
04401023 | 3455 | StartPtr = GetNextVariablePtr (StartPtr, mVariableModuleGlobal->VariableGlobal.AuthFormat);\r |
a37044ef LG |
3456 | }\r |
3457 | //\r | |
3458 | // Update Auth Storage Header\r | |
3459 | //\r | |
3460 | AuthVarStorage->Format = NormalVarStorage->Format;\r | |
3461 | AuthVarStorage->State = NormalVarStorage->State;\r | |
1b79547a | 3462 | AuthVarStorage->Size = (UINT32)((UINTN)AuthStartPtr - (UINTN)AuthVarStorage);\r |
a37044ef LG |
3463 | CopyGuid (&AuthVarStorage->Signature, &gEfiAuthenticatedVariableGuid);\r |
3464 | ASSERT (AuthVarStorage->Size <= AuthVarStroageSize);\r | |
8a2d4996 | 3465 | \r |
a37044ef LG |
3466 | //\r |
3467 | // Restore AuthFormat\r | |
3468 | //\r | |
3469 | mVariableModuleGlobal->VariableGlobal.AuthFormat = TRUE;\r | |
3470 | return AuthVarStorage;\r | |
3471 | }\r | |
09808bd3 SZ |
3472 | \r |
3473 | /**\r | |
3474 | Get HOB variable store.\r | |
3475 | \r | |
5f463523 | 3476 | @param[in] VariableGuid NV variable store signature.\r |
09808bd3 SZ |
3477 | \r |
3478 | @retval EFI_SUCCESS Function successfully executed.\r | |
3479 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
3480 | \r | |
3481 | **/\r | |
3482 | EFI_STATUS\r | |
3483 | GetHobVariableStore (\r | |
3484 | IN EFI_GUID *VariableGuid\r | |
3485 | )\r | |
3486 | {\r | |
3487 | VARIABLE_STORE_HEADER *VariableStoreHeader;\r | |
3488 | UINT64 VariableStoreLength;\r | |
3489 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
3490 | BOOLEAN NeedConvertNormalToAuth;\r | |
3491 | \r | |
fdd3e77a SZ |
3492 | //\r |
3493 | // Make sure there is no more than one Variable HOB.\r | |
3494 | //\r | |
3495 | DEBUG_CODE (\r | |
3496 | GuidHob = GetFirstGuidHob (&gEfiAuthenticatedVariableGuid);\r | |
3497 | if (GuidHob != NULL) {\r | |
3498 | if ((GetNextGuidHob (&gEfiAuthenticatedVariableGuid, GET_NEXT_HOB (GuidHob)) != NULL)) {\r | |
3499 | DEBUG ((DEBUG_ERROR, "ERROR: Found two Auth Variable HOBs\n"));\r | |
3500 | ASSERT (FALSE);\r | |
3501 | } else if (GetFirstGuidHob (&gEfiVariableGuid) != NULL) {\r | |
3502 | DEBUG ((DEBUG_ERROR, "ERROR: Found one Auth + one Normal Variable HOBs\n"));\r | |
3503 | ASSERT (FALSE);\r | |
3504 | }\r | |
3505 | } else {\r | |
3506 | GuidHob = GetFirstGuidHob (&gEfiVariableGuid);\r | |
3507 | if (GuidHob != NULL) {\r | |
3508 | if ((GetNextGuidHob (&gEfiVariableGuid, GET_NEXT_HOB (GuidHob)) != NULL)) {\r | |
3509 | DEBUG ((DEBUG_ERROR, "ERROR: Found two Normal Variable HOBs\n"));\r | |
3510 | ASSERT (FALSE);\r | |
3511 | }\r | |
3512 | }\r | |
3513 | }\r | |
3514 | );\r | |
3515 | \r | |
09808bd3 SZ |
3516 | //\r |
3517 | // Combinations supported:\r | |
3518 | // 1. Normal NV variable store +\r | |
3519 | // Normal HOB variable store\r | |
3520 | // 2. Auth NV variable store +\r | |
3521 | // Auth HOB variable store\r | |
3522 | // 3. Auth NV variable store +\r | |
3523 | // Normal HOB variable store (code will convert it to Auth Format)\r | |
3524 | //\r | |
3525 | NeedConvertNormalToAuth = FALSE;\r | |
3526 | GuidHob = GetFirstGuidHob (VariableGuid);\r | |
3527 | if (GuidHob == NULL && VariableGuid == &gEfiAuthenticatedVariableGuid) {\r | |
3528 | //\r | |
3529 | // Try getting it from normal variable HOB\r | |
3530 | //\r | |
3531 | GuidHob = GetFirstGuidHob (&gEfiVariableGuid);\r | |
3532 | NeedConvertNormalToAuth = TRUE;\r | |
3533 | }\r | |
3534 | if (GuidHob != NULL) {\r | |
3535 | VariableStoreHeader = GET_GUID_HOB_DATA (GuidHob);\r | |
3536 | VariableStoreLength = GuidHob->Header.HobLength - sizeof (EFI_HOB_GUID_TYPE);\r | |
3537 | if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r | |
3538 | if (!NeedConvertNormalToAuth) {\r | |
3539 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) AllocateRuntimeCopyPool ((UINTN) VariableStoreLength, (VOID *) VariableStoreHeader);\r | |
3540 | } else {\r | |
3541 | mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) ConvertNormalVarStorageToAuthVarStorage ((VOID *) VariableStoreHeader);\r | |
3542 | }\r | |
3543 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase == 0) {\r | |
3544 | return EFI_OUT_OF_RESOURCES;\r | |
3545 | }\r | |
3546 | } else {\r | |
3547 | DEBUG ((EFI_D_ERROR, "HOB Variable Store header is corrupted!\n"));\r | |
3548 | }\r | |
3549 | }\r | |
3550 | \r | |
3551 | return EFI_SUCCESS;\r | |
3552 | }\r | |
3553 | \r | |
8a2d4996 | 3554 | /**\r |
3555 | Initializes variable store area for non-volatile and volatile variable.\r | |
7c80e839 | 3556 | \r |
3557 | @retval EFI_SUCCESS Function successfully executed.\r | |
3558 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
3559 | \r | |
3560 | **/\r | |
8d3a5c82 | 3561 | EFI_STATUS\r |
8d3a5c82 | 3562 | VariableCommonInitialize (\r |
8a2d4996 | 3563 | VOID\r |
8d3a5c82 | 3564 | )\r |
8d3a5c82 | 3565 | {\r |
3566 | EFI_STATUS Status;\r | |
8d3a5c82 | 3567 | VARIABLE_STORE_HEADER *VolatileVariableStore;\r |
2fcdca1d | 3568 | UINTN ScratchSize;\r |
fa0737a8 | 3569 | EFI_GUID *VariableGuid;\r |
8d3a5c82 | 3570 | \r |
7800593d LG |
3571 | //\r |
3572 | // Allocate runtime memory for variable driver global structure.\r | |
3573 | //\r | |
72399dae | 3574 | mVariableModuleGlobal = AllocateRuntimeZeroPool (sizeof (VARIABLE_MODULE_GLOBAL));\r |
7800593d LG |
3575 | if (mVariableModuleGlobal == NULL) {\r |
3576 | return EFI_OUT_OF_RESOURCES;\r | |
3577 | }\r | |
8d3a5c82 | 3578 | \r |
8a2d4996 | 3579 | InitializeLock (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r |
8d3a5c82 | 3580 | \r |
fa0737a8 SZ |
3581 | //\r |
3582 | // Init non-volatile variable store.\r | |
3583 | //\r | |
701d603f | 3584 | Status = InitNonVolatileVariableStore ();\r |
fa0737a8 SZ |
3585 | if (EFI_ERROR (Status)) {\r |
3586 | FreePool (mVariableModuleGlobal);\r | |
3587 | return Status;\r | |
3588 | }\r | |
3589 | \r | |
3590 | //\r | |
3591 | // mVariableModuleGlobal->VariableGlobal.AuthFormat\r | |
3592 | // has been initialized in InitNonVolatileVariableStore().\r | |
3593 | //\r | |
3594 | if (mVariableModuleGlobal->VariableGlobal.AuthFormat) {\r | |
3595 | DEBUG ((EFI_D_INFO, "Variable driver will work with auth variable format!\n"));\r | |
3596 | //\r | |
3597 | // Set AuthSupport to FALSE first, VariableWriteServiceInitialize() will initialize it.\r | |
3598 | //\r | |
3599 | mVariableModuleGlobal->VariableGlobal.AuthSupport = FALSE;\r | |
3600 | VariableGuid = &gEfiAuthenticatedVariableGuid;\r | |
3601 | } else {\r | |
3602 | DEBUG ((EFI_D_INFO, "Variable driver will work without auth variable support!\n"));\r | |
3603 | mVariableModuleGlobal->VariableGlobal.AuthSupport = FALSE;\r | |
3604 | VariableGuid = &gEfiVariableGuid;\r | |
3605 | }\r | |
3606 | \r | |
0f7aff72 RN |
3607 | //\r |
3608 | // Get HOB variable store.\r | |
3609 | //\r | |
09808bd3 SZ |
3610 | Status = GetHobVariableStore (VariableGuid);\r |
3611 | if (EFI_ERROR (Status)) {\r | |
701d603f SZ |
3612 | if (mNvFvHeaderCache != NULL) {\r |
3613 | FreePool (mNvFvHeaderCache);\r | |
3614 | }\r | |
09808bd3 SZ |
3615 | FreePool (mVariableModuleGlobal);\r |
3616 | return Status;\r | |
0f7aff72 RN |
3617 | }\r |
3618 | \r | |
9b4a2032 LE |
3619 | mVariableModuleGlobal->MaxVolatileVariableSize = ((PcdGet32 (PcdMaxVolatileVariableSize) != 0) ?\r |
3620 | PcdGet32 (PcdMaxVolatileVariableSize) :\r | |
3621 | mVariableModuleGlobal->MaxVariableSize\r | |
3622 | );\r | |
8d3a5c82 | 3623 | //\r |
2fcdca1d | 3624 | // Allocate memory for volatile variable store, note that there is a scratch space to store scratch data.\r |
8d3a5c82 | 3625 | //\r |
9b4a2032 | 3626 | ScratchSize = GetMaxVariableSize ();\r |
fa0737a8 | 3627 | mVariableModuleGlobal->ScratchBufferSize = ScratchSize;\r |
188e4e84 | 3628 | VolatileVariableStore = AllocateRuntimePool (PcdGet32 (PcdVariableStoreSize) + ScratchSize);\r |
8d3a5c82 | 3629 | if (VolatileVariableStore == NULL) {\r |
3e02ebb2 SZ |
3630 | if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r |
3631 | FreePool ((VOID *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase);\r | |
3632 | }\r | |
701d603f SZ |
3633 | if (mNvFvHeaderCache != NULL) {\r |
3634 | FreePool (mNvFvHeaderCache);\r | |
3635 | }\r | |
8d3a5c82 | 3636 | FreePool (mVariableModuleGlobal);\r |
3637 | return EFI_OUT_OF_RESOURCES;\r | |
3638 | }\r | |
3639 | \r | |
188e4e84 | 3640 | SetMem (VolatileVariableStore, PcdGet32 (PcdVariableStoreSize) + ScratchSize, 0xff);\r |
8d3a5c82 | 3641 | \r |
3642 | //\r | |
8a2d4996 | 3643 | // Initialize Variable Specific Data.\r |
8d3a5c82 | 3644 | //\r |
052ad7e1 | 3645 | mVariableModuleGlobal->VariableGlobal.VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r |
9cad030b | 3646 | mVariableModuleGlobal->VolatileLastVariableOffset = (UINTN) GetStartPointer (VolatileVariableStore) - (UINTN) VolatileVariableStore;\r |
8d3a5c82 | 3647 | \r |
fa0737a8 | 3648 | CopyGuid (&VolatileVariableStore->Signature, VariableGuid);\r |
8a2d4996 | 3649 | VolatileVariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r |
3650 | VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r | |
3651 | VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r | |
3652 | VolatileVariableStore->Reserved = 0;\r | |
3653 | VolatileVariableStore->Reserved1 = 0;\r | |
8d3a5c82 | 3654 | \r |
fa0737a8 | 3655 | return EFI_SUCCESS;\r |
8d3a5c82 | 3656 | }\r |
052ad7e1 | 3657 | \r |
052ad7e1 | 3658 | \r |
aa75dfec | 3659 | /**\r |
8a2d4996 | 3660 | Get the proper fvb handle and/or fvb protocol by the given Flash address.\r |
aa75dfec | 3661 | \r |
fa0737a8 | 3662 | @param[in] Address The Flash address.\r |
8a2d4996 | 3663 | @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r |
3664 | @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r | |
aa75dfec | 3665 | \r |
aa75dfec | 3666 | **/\r |
8a2d4996 | 3667 | EFI_STATUS\r |
3668 | GetFvbInfoByAddress (\r | |
3669 | IN EFI_PHYSICAL_ADDRESS Address,\r | |
3670 | OUT EFI_HANDLE *FvbHandle OPTIONAL,\r | |
3671 | OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r | |
8a9e0b72 | 3672 | )\r |
3673 | {\r | |
8a2d4996 | 3674 | EFI_STATUS Status;\r |
3675 | EFI_HANDLE *HandleBuffer;\r | |
3676 | UINTN HandleCount;\r | |
3677 | UINTN Index;\r | |
3678 | EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r | |
3679 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
8a2d4996 | 3680 | EFI_FVB_ATTRIBUTES_2 Attributes;\r |
1fcbeaea DG |
3681 | UINTN BlockSize;\r |
3682 | UINTN NumberOfBlocks;\r | |
3683 | \r | |
4e1005ec | 3684 | HandleBuffer = NULL;\r |
8a9e0b72 | 3685 | //\r |
8a2d4996 | 3686 | // Get all FVB handles.\r |
8a9e0b72 | 3687 | //\r |
8a2d4996 | 3688 | Status = GetFvbCountAndBuffer (&HandleCount, &HandleBuffer);\r |
8a9e0b72 | 3689 | if (EFI_ERROR (Status)) {\r |
8a2d4996 | 3690 | return EFI_NOT_FOUND;\r |
8a9e0b72 | 3691 | }\r |
8a2d4996 | 3692 | \r |
8a9e0b72 | 3693 | //\r |
8a2d4996 | 3694 | // Get the FVB to access variable store.\r |
8a9e0b72 | 3695 | //\r |
8a2d4996 | 3696 | Fvb = NULL;\r |
f0480ecf | 3697 | for (Index = 0; Index < HandleCount; Index += 1, Status = EFI_NOT_FOUND, Fvb = NULL) {\r |
8a2d4996 | 3698 | Status = GetFvbByHandle (HandleBuffer[Index], &Fvb);\r |
8a9e0b72 | 3699 | if (EFI_ERROR (Status)) {\r |
3700 | Status = EFI_NOT_FOUND;\r | |
3701 | break;\r | |
3702 | }\r | |
3703 | \r | |
3704 | //\r | |
3705 | // Ensure this FVB protocol supported Write operation.\r | |
3706 | //\r | |
3707 | Status = Fvb->GetAttributes (Fvb, &Attributes);\r | |
3708 | if (EFI_ERROR (Status) || ((Attributes & EFI_FVB2_WRITE_STATUS) == 0)) {\r | |
1fcbeaea | 3709 | continue;\r |
8a9e0b72 | 3710 | }\r |
1fcbeaea | 3711 | \r |
8a9e0b72 | 3712 | //\r |
8a2d4996 | 3713 | // Compare the address and select the right one.\r |
8a9e0b72 | 3714 | //\r |
3715 | Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r | |
3716 | if (EFI_ERROR (Status)) {\r | |
3717 | continue;\r | |
3718 | }\r | |
3719 | \r | |
1fcbeaea DG |
3720 | //\r |
3721 | // Assume one FVB has one type of BlockSize.\r | |
3722 | //\r | |
3723 | Status = Fvb->GetBlockSize (Fvb, 0, &BlockSize, &NumberOfBlocks);\r | |
3724 | if (EFI_ERROR (Status)) {\r | |
3725 | continue;\r | |
3726 | }\r | |
3727 | \r | |
3728 | if ((Address >= FvbBaseAddress) && (Address < (FvbBaseAddress + BlockSize * NumberOfBlocks))) {\r | |
8a2d4996 | 3729 | if (FvbHandle != NULL) {\r |
3730 | *FvbHandle = HandleBuffer[Index];\r | |
3731 | }\r | |
3732 | if (FvbProtocol != NULL) {\r | |
3733 | *FvbProtocol = Fvb;\r | |
3734 | }\r | |
3735 | Status = EFI_SUCCESS;\r | |
8a9e0b72 | 3736 | break;\r |
3737 | }\r | |
3738 | }\r | |
8a9e0b72 | 3739 | FreePool (HandleBuffer);\r |
533020ef | 3740 | \r |
8a2d4996 | 3741 | if (Fvb == NULL) {\r |
3742 | Status = EFI_NOT_FOUND;\r | |
8a9e0b72 | 3743 | }\r |
fa0737a8 SZ |
3744 | \r |
3745 | return Status;\r | |
052ad7e1 A |
3746 | }\r |
3747 | \r |