+++ /dev/null
-/** @file\r
-\r
- Emulation Variable services operate on the runtime volatile memory.\r
- The nonvolatile variable space doesn't exist.\r
-\r
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "Variable.h"\r
-\r
-///\r
-/// Don't use module globals after the SetVirtualAddress map is signaled\r
-///\r
-ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
-\r
-VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r
-\r
-///\r
-/// The size of a 3 character ISO639 language code.\r
-///\r
-#define ISO_639_2_ENTRY_SIZE 3\r
-\r
-/**\r
- Update the variable region with Variable information. These are the same\r
- arguments as the EFI Variable services.\r
-\r
- @param[in] VariableName Name of variable\r
-\r
- @param[in] VendorGuid Guid of variable\r
-\r
- @param[in] Data Variable data\r
-\r
- @param[in] DataSize Size of data. 0 means delete\r
-\r
- @param[in] Attributes Attribues of the variable\r
-\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
-\r
- @retval EFI_SUCCESS The update operation is success.\r
-\r
- @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other data into this region.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-UpdateVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN UINT32 Attributes OPTIONAL,\r
- IN VARIABLE_POINTER_TRACK *Variable\r
- );\r
-\r
-/**\r
- Finds variable in storage blocks of volatile and non-volatile storage areas.\r
-\r
- This code finds variable in storage blocks of volatile and non-volatile storage areas.\r
- If VariableName is an empty string, then we just return the first\r
- qualified variable without comparing VariableName and VendorGuid.\r
- Otherwise, VariableName and VendorGuid are compared.\r
-\r
- @param VariableName Name of the variable to be found.\r
- @param VendorGuid Vendor GUID to be found.\r
- @param PtrTrack VARIABLE_POINTER_TRACK structure for output,\r
- including the range searched and the target position.\r
- @param Global Pointer to VARIABLE_GLOBAL structure, including\r
- base of volatile variable storage area, base of\r
- NV variable storage area, and a lock.\r
-\r
- @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r
- VendorGuid is NULL.\r
- @retval EFI_SUCCESS Variable successfully found.\r
- @retval EFI_NOT_FOUND Variable not found.\r
-\r
-**/\r
-EFI_STATUS\r
-FindVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack,\r
- IN VARIABLE_GLOBAL *Global\r
- );\r
-\r
-/**\r
- Acquires lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function which will be removed when\r
- EfiAcquireLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiAcquireLock() at boot time, and simply returns\r
- at runtime\r
-\r
- @param Lock A pointer to the lock to acquire\r
-\r
-**/\r
-VOID\r
-AcquireLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
- if (!EfiAtRuntime ()) {\r
- EfiAcquireLock (Lock);\r
- }\r
-}\r
-\r
-/**\r
- Releases lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function which will be removed when\r
- EfiReleaseLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiReleaseLock() at boot time, and simply returns\r
- at runtime\r
-\r
- @param Lock A pointer to the lock to release\r
-\r
-**/\r
-VOID\r
-ReleaseLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
- if (!EfiAtRuntime ()) {\r
- EfiReleaseLock (Lock);\r
- }\r
-}\r
-\r
-/**\r
- Gets pointer to the variable data.\r
-\r
- This function gets the pointer to the variable data according\r
- to the input pointer to the variable header.\r
-\r
- @param Variable Pointer to the variable header.\r
-\r
- @return Pointer to variable data\r
-\r
-**/\r
-UINT8 *\r
-GetVariableDataPtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- if (Variable->StartId != VARIABLE_DATA) {\r
- return NULL;\r
- }\r
- //\r
- // Be careful about pad size for alignment\r
- //\r
- return (UINT8 *) ((UINTN) GET_VARIABLE_NAME_PTR (Variable) + Variable->NameSize + GET_PAD_SIZE (Variable->NameSize));\r
-}\r
-\r
-/**\r
- Gets pointer to header of the next potential variable.\r
-\r
- This function gets the pointer to the next potential variable header\r
- according to the input point to the variable header. The return value\r
- is not a valid variable if the input variable was the last variable\r
- in the variabl store.\r
-\r
- @param Variable Pointer to header of the next variable\r
-\r
- @return Pointer to next variable header.\r
- @retval NULL Input was not a valid variable header.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetNextPotentialVariablePtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- VARIABLE_HEADER *VarHeader;\r
-\r
- if (Variable->StartId != VARIABLE_DATA) {\r
- return NULL;\r
- }\r
- //\r
- // Be careful about pad size for alignment\r
- //\r
- VarHeader = (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) GetVariableDataPtr (Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));\r
-\r
- return VarHeader;\r
-}\r
-\r
-/**\r
- Gets pointer to header of the next variable.\r
-\r
- This function gets the pointer to the next variable header according\r
- to the input point to the variable header.\r
-\r
- @param Variable Pointer to header of the next variable\r
-\r
- @return Pointer to next variable header.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetNextVariablePtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- VARIABLE_HEADER *VarHeader;\r
-\r
- VarHeader = GetNextPotentialVariablePtr (Variable);\r
-\r
- if ((VarHeader == NULL) || (VarHeader->StartId != VARIABLE_DATA)) {\r
- return NULL;\r
- }\r
-\r
- return VarHeader;\r
-}\r
-\r
-/**\r
- Updates LastVariableOffset variable for the given variable store.\r
-\r
- LastVariableOffset points to the offset to use for the next variable\r
- when updating the variable store.\r
-\r
- @param[in] VariableStore Pointer to the start of the variable store\r
- @param[out] LastVariableOffset Offset to put the next new variable in\r
-\r
-**/\r
-VOID\r
-InitializeLocationForLastVariableOffset (\r
- IN VARIABLE_STORE_HEADER *VariableStore,\r
- OUT UINTN *LastVariableOffset\r
- )\r
-{\r
- VARIABLE_HEADER *VarHeader;\r
-\r
- *LastVariableOffset = sizeof (VARIABLE_STORE_HEADER);\r
- VarHeader = (VARIABLE_HEADER*) ((UINT8*)VariableStore + *LastVariableOffset);\r
- while (VarHeader->StartId == VARIABLE_DATA) {\r
- VarHeader = GetNextPotentialVariablePtr (VarHeader);\r
-\r
- if (VarHeader != NULL) {\r
- *LastVariableOffset = (UINTN) VarHeader - (UINTN) VariableStore;\r
- } else {\r
- return;\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Gets pointer to the end of the variable storage area.\r
-\r
- This function gets pointer to the end of the variable storage\r
- area, according to the input variable store header.\r
-\r
- @param VolHeader Pointer to the variale store header\r
-\r
- @return Pointer to the end of the variable storage area.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetEndPointer (\r
- IN VARIABLE_STORE_HEADER *VolHeader\r
- )\r
-{\r
- //\r
- // The end of variable store\r
- //\r
- return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VolHeader + VolHeader->Size);\r
-}\r
-\r
-/**\r
- Routine used to track statistical information about variable usage.\r
- The data is stored in the EFI system table so it can be accessed later.\r
- VariableInfo.efi can dump out the table. Only Boot Services variable\r
- accesses are tracked by this code. The PcdVariableCollectStatistics\r
- build flag controls if this feature is enabled.\r
-\r
- A read that hits in the cache will have Read and Cache true for\r
- the transaction. Data is allocated by this routine, but never\r
- freed.\r
-\r
- @param[in] VariableName Name of the Variable to track\r
- @param[in] VendorGuid Guid of the Variable to track\r
- @param[in] Volatile TRUE if volatile FALSE if non-volatile\r
- @param[in] Read TRUE if GetVariable() was called\r
- @param[in] Write TRUE if SetVariable() was called\r
- @param[in] Delete TRUE if deleted via SetVariable()\r
- @param[in] Cache TRUE for a cache hit.\r
-\r
-**/\r
-VOID\r
-UpdateVariableInfo (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN BOOLEAN Volatile,\r
- IN BOOLEAN Read,\r
- IN BOOLEAN Write,\r
- IN BOOLEAN Delete,\r
- IN BOOLEAN Cache\r
- )\r
-{\r
- VARIABLE_INFO_ENTRY *Entry;\r
-\r
- if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r
-\r
- if (EfiAtRuntime ()) {\r
- // Don't collect statistics at runtime\r
- return;\r
- }\r
-\r
- if (gVariableInfo == NULL) {\r
- //\r
- // on the first call allocate a entry and place a pointer to it in\r
- // the EFI System Table\r
- //\r
- gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r
- ASSERT (gVariableInfo != NULL);\r
-\r
- CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);\r
- gVariableInfo->Name = AllocateZeroPool (StrSize (VariableName));\r
- ASSERT (gVariableInfo->Name != NULL);\r
- StrCpyS (gVariableInfo->Name, StrSize(VariableName)/sizeof(CHAR16), VariableName);\r
- gVariableInfo->Volatile = Volatile;\r
-\r
- gBS->InstallConfigurationTable (&gEfiVariableGuid, gVariableInfo);\r
- }\r
-\r
-\r
- for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {\r
- if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {\r
- if (StrCmp (VariableName, Entry->Name) == 0) {\r
- if (Read) {\r
- Entry->ReadCount++;\r
- }\r
- if (Write) {\r
- Entry->WriteCount++;\r
- }\r
- if (Delete) {\r
- Entry->DeleteCount++;\r
- }\r
- if (Cache) {\r
- Entry->CacheCount++;\r
- }\r
-\r
- return;\r
- }\r
- }\r
-\r
- if (Entry->Next == NULL) {\r
- //\r
- // If the entry is not in the table add it.\r
- // Next iteration of the loop will fill in the data\r
- //\r
- Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r
- ASSERT (Entry->Next != NULL);\r
-\r
- CopyGuid (&Entry->Next->VendorGuid, VendorGuid);\r
- Entry->Next->Name = AllocateZeroPool (StrSize (VariableName));\r
- ASSERT (Entry->Next->Name != NULL);\r
- StrCpyS (Entry->Next->Name, StrSize(VariableName)/sizeof(CHAR16), VariableName);\r
- Entry->Next->Volatile = Volatile;\r
- }\r
-\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Get index from supported language codes according to language string.\r
-\r
- This code is used to get corresponding index in supported language codes. It can handle\r
- RFC4646 and ISO639 language tags.\r
- In ISO639 language tags, take 3-characters as a delimitation to find matched string and calculate the index.\r
- In RFC4646 language tags, take semicolon as a delimitation to find matched string and calculate the index.\r
-\r
- For example:\r
- SupportedLang = "engfraengfra"\r
- Lang = "eng"\r
- Iso639Language = TRUE\r
- The return value is "0".\r
- Another example:\r
- SupportedLang = "en;fr;en-US;fr-FR"\r
- Lang = "fr-FR"\r
- Iso639Language = FALSE\r
- The return value is "3".\r
-\r
- @param SupportedLang Platform supported language codes.\r
- @param Lang Configured language.\r
- @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r
-\r
- @retval the index of language in the language codes.\r
-\r
-**/\r
-UINTN\r
-GetIndexFromSupportedLangCodes(\r
- IN CHAR8 *SupportedLang,\r
- IN CHAR8 *Lang,\r
- IN BOOLEAN Iso639Language\r
- )\r
-{\r
- UINTN Index;\r
- UINTN CompareLength;\r
- UINTN LanguageLength;\r
-\r
- if (Iso639Language) {\r
- CompareLength = ISO_639_2_ENTRY_SIZE;\r
- for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {\r
- if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {\r
- //\r
- // Successfully find the index of Lang string in SupportedLang string.\r
- //\r
- Index = Index / CompareLength;\r
- return Index;\r
- }\r
- }\r
- ASSERT (FALSE);\r
- return 0;\r
- } else {\r
- //\r
- // Compare RFC4646 language code\r
- //\r
- Index = 0;\r
- for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);\r
-\r
- for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang += CompareLength) {\r
- //\r
- // Skip ';' characters in SupportedLang\r
- //\r
- for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);\r
- //\r
- // Determine the length of the next language code in SupportedLang\r
- //\r
- for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);\r
-\r
- if ((CompareLength == LanguageLength) &&\r
- (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {\r
- //\r
- // Successfully find the index of Lang string in SupportedLang string.\r
- //\r
- return Index;\r
- }\r
- }\r
- ASSERT (FALSE);\r
- return 0;\r
- }\r
-}\r
-\r
-/**\r
- Get language string from supported language codes according to index.\r
-\r
- This code is used to get corresponding language string in supported language codes. It can handle\r
- RFC4646 and ISO639 language tags.\r
- In ISO639 language tags, take 3-characters as a delimitation. Find language string according to the index.\r
- In RFC4646 language tags, take semicolon as a delimitation. Find language string according to the index.\r
-\r
- For example:\r
- SupportedLang = "engfraengfra"\r
- Index = "1"\r
- Iso639Language = TRUE\r
- The return value is "fra".\r
- Another example:\r
- SupportedLang = "en;fr;en-US;fr-FR"\r
- Index = "1"\r
- Iso639Language = FALSE\r
- The return value is "fr".\r
-\r
- @param SupportedLang Platform supported language codes.\r
- @param Index the index in supported language codes.\r
- @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r
-\r
- @retval the language string in the language codes.\r
-\r
-**/\r
-CHAR8 *\r
-GetLangFromSupportedLangCodes (\r
- IN CHAR8 *SupportedLang,\r
- IN UINTN Index,\r
- IN BOOLEAN Iso639Language\r
-)\r
-{\r
- UINTN SubIndex;\r
- UINTN CompareLength;\r
- CHAR8 *Supported;\r
-\r
- SubIndex = 0;\r
- Supported = SupportedLang;\r
- if (Iso639Language) {\r
- //\r
- // according to the index of Lang string in SupportedLang string to get the language.\r
- // As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.\r
- // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r
- //\r
- CompareLength = ISO_639_2_ENTRY_SIZE;\r
- mVariableModuleGlobal->Lang[CompareLength] = '\0';\r
- return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index * CompareLength, CompareLength);\r
-\r
- } else {\r
- while (TRUE) {\r
- //\r
- // take semicolon as delimitation, sequentially traverse supported language codes.\r
- //\r
- for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {\r
- Supported++;\r
- }\r
- if ((*Supported == '\0') && (SubIndex != Index)) {\r
- //\r
- // Have completed the traverse, but not find corrsponding string.\r
- // This case is not allowed to happen.\r
- //\r
- ASSERT(FALSE);\r
- return NULL;\r
- }\r
- if (SubIndex == Index) {\r
- //\r
- // according to the index of Lang string in SupportedLang string to get the language.\r
- // As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.\r
- // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r
- //\r
- mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';\r
- return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);\r
- }\r
- SubIndex++;\r
-\r
- //\r
- // Skip ';' characters in Supported\r
- //\r
- for (; *Supported != '\0' && *Supported == ';'; Supported++);\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Returns a pointer to an allocated buffer that contains the best matching language\r
- from a set of supported languages.\r
-\r
- This function supports both ISO 639-2 and RFC 4646 language codes, but language\r
- code types may not be mixed in a single call to this function. This function\r
- supports a variable argument list that allows the caller to pass in a prioritized\r
- list of language codes to test against all the language codes in SupportedLanguages.\r
-\r
- If SupportedLanguages is NULL, then ASSERT().\r
-\r
- @param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that\r
- contains a set of language codes in the format\r
- specified by Iso639Language.\r
- @param[in] Iso639Language If not zero, then all language codes are assumed to be\r
- in ISO 639-2 format. If zero, then all language\r
- codes are assumed to be in RFC 4646 language format\r
- @param[in] ... A variable argument list that contains pointers to\r
- Null-terminated ASCII strings that contain one or more\r
- language codes in the format specified by Iso639Language.\r
- The first language code from each of these language\r
- code lists is used to determine if it is an exact or\r
- close match to any of the language codes in\r
- SupportedLanguages. Close matches only apply to RFC 4646\r
- language codes, and the matching algorithm from RFC 4647\r
- is used to determine if a close match is present. If\r
- an exact or close match is found, then the matching\r
- language code from SupportedLanguages is returned. If\r
- no matches are found, then the next variable argument\r
- parameter is evaluated. The variable argument list\r
- is terminated by a NULL.\r
-\r
- @retval NULL The best matching language could not be found in SupportedLanguages.\r
- @retval NULL There are not enough resources available to return the best matching\r
- language.\r
- @retval Other A pointer to a Null-terminated ASCII string that is the best matching\r
- language in SupportedLanguages.\r
-\r
-**/\r
-CHAR8 *\r
-EFIAPI\r
-VariableGetBestLanguage (\r
- IN CONST CHAR8 *SupportedLanguages,\r
- IN UINTN Iso639Language,\r
- ...\r
- )\r
-{\r
- VA_LIST Args;\r
- CHAR8 *Language;\r
- UINTN CompareLength;\r
- UINTN LanguageLength;\r
- CONST CHAR8 *Supported;\r
- CHAR8 *Buffer;\r
-\r
- ASSERT (SupportedLanguages != NULL);\r
-\r
- VA_START (Args, Iso639Language);\r
- while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {\r
- //\r
- // Default to ISO 639-2 mode\r
- //\r
- CompareLength = 3;\r
- LanguageLength = MIN (3, AsciiStrLen (Language));\r
-\r
- //\r
- // If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language\r
- //\r
- if (Iso639Language == 0) {\r
- for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);\r
- }\r
-\r
- //\r
- // Trim back the length of Language used until it is empty\r
- //\r
- while (LanguageLength > 0) {\r
- //\r
- // Loop through all language codes in SupportedLanguages\r
- //\r
- for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {\r
- //\r
- // In RFC 4646 mode, then Loop through all language codes in SupportedLanguages\r
- //\r
- if (Iso639Language == 0) {\r
- //\r
- // Skip ';' characters in Supported\r
- //\r
- for (; *Supported != '\0' && *Supported == ';'; Supported++);\r
- //\r
- // Determine the length of the next language code in Supported\r
- //\r
- for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);\r
- //\r
- // If Language is longer than the Supported, then skip to the next language\r
- //\r
- if (LanguageLength > CompareLength) {\r
- continue;\r
- }\r
- }\r
- //\r
- // See if the first LanguageLength characters in Supported match Language\r
- //\r
- if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {\r
- VA_END (Args);\r
-\r
- Buffer = (Iso639Language != 0) ? mVariableModuleGlobal->Lang : mVariableModuleGlobal->PlatformLang;\r
- Buffer[CompareLength] = '\0';\r
- return CopyMem (Buffer, Supported, CompareLength);\r
- }\r
- }\r
-\r
- if (Iso639Language != 0) {\r
- //\r
- // If ISO 639 mode, then each language can only be tested once\r
- //\r
- LanguageLength = 0;\r
- } else {\r
- //\r
- // If RFC 4646 mode, then trim Language from the right to the next '-' character\r
- //\r
- for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);\r
- }\r
- }\r
- }\r
- VA_END (Args);\r
-\r
- //\r
- // No matches were found\r
- //\r
- return NULL;\r
-}\r
-\r
-/**\r
- Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.\r
-\r
- When setting Lang/LangCodes, simultaneously update PlatformLang/PlatformLangCodes.\r
-\r
- According to UEFI spec, PlatformLangCodes/LangCodes are only set once in firmware initialization,\r
- and are read-only. Therefore, in variable driver, only store the original value for other use.\r
-\r
- @param[in] VariableName Name of variable\r
-\r
- @param[in] Data Variable data\r
-\r
- @param[in] DataSize Size of data. 0 means delete\r
-\r
-**/\r
-VOID\r
-AutoUpdateLangVariable(\r
- IN CHAR16 *VariableName,\r
- IN VOID *Data,\r
- IN UINTN DataSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- CHAR8 *BestPlatformLang;\r
- CHAR8 *BestLang;\r
- UINTN Index;\r
- UINT32 Attributes;\r
- VARIABLE_POINTER_TRACK Variable;\r
- BOOLEAN SetLanguageCodes;\r
-\r
- //\r
- // Don't do updates for delete operation\r
- //\r
- if (DataSize == 0) {\r
- return;\r
- }\r
-\r
- SetLanguageCodes = FALSE;\r
-\r
- if (StrCmp (VariableName, L"PlatformLangCodes") == 0) {\r
- //\r
- // PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r
- //\r
- if (EfiAtRuntime ()) {\r
- return;\r
- }\r
-\r
- SetLanguageCodes = TRUE;\r
-\r
- //\r
- // According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only\r
- // Therefore, in variable driver, only store the original value for other use.\r
- //\r
- if (mVariableModuleGlobal->PlatformLangCodes != NULL) {\r
- FreePool (mVariableModuleGlobal->PlatformLangCodes);\r
- }\r
- mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r
- ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);\r
-\r
- //\r
- // PlatformLang holds a single language from PlatformLangCodes,\r
- // so the size of PlatformLangCodes is enough for the PlatformLang.\r
- //\r
- if (mVariableModuleGlobal->PlatformLang != NULL) {\r
- FreePool (mVariableModuleGlobal->PlatformLang);\r
- }\r
- mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);\r
- ASSERT (mVariableModuleGlobal->PlatformLang != NULL);\r
-\r
- } else if (StrCmp (VariableName, L"LangCodes") == 0) {\r
- //\r
- // LangCodes is a volatile variable, so it can not be updated at runtime.\r
- //\r
- if (EfiAtRuntime ()) {\r
- return;\r
- }\r
-\r
- SetLanguageCodes = TRUE;\r
-\r
- //\r
- // According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only\r
- // Therefore, in variable driver, only store the original value for other use.\r
- //\r
- if (mVariableModuleGlobal->LangCodes != NULL) {\r
- FreePool (mVariableModuleGlobal->LangCodes);\r
- }\r
- mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r
- ASSERT (mVariableModuleGlobal->LangCodes != NULL);\r
- }\r
-\r
- if (SetLanguageCodes\r
- && (mVariableModuleGlobal->PlatformLangCodes != NULL)\r
- && (mVariableModuleGlobal->LangCodes != NULL)) {\r
- //\r
- // Update Lang if PlatformLang is already set\r
- // Update PlatformLang if Lang is already set\r
- //\r
- Status = FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Update Lang\r
- //\r
- VariableName = L"PlatformLang";\r
- Data = GetVariableDataPtr (Variable.CurrPtr);\r
- DataSize = Variable.CurrPtr->DataSize;\r
- } else {\r
- Status = FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *) mVariableModuleGlobal);\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Update PlatformLang\r
- //\r
- VariableName = L"Lang";\r
- Data = GetVariableDataPtr (Variable.CurrPtr);\r
- DataSize = Variable.CurrPtr->DataSize;\r
- } else {\r
- //\r
- // Neither PlatformLang nor Lang is set, directly return\r
- //\r
- return;\r
- }\r
- }\r
- }\r
-\r
- //\r
- // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.\r
- //\r
- Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r
-\r
- if (StrCmp (VariableName, L"PlatformLang") == 0) {\r
- //\r
- // Update Lang when PlatformLangCodes/LangCodes were set.\r
- //\r
- if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r
- //\r
- // When setting PlatformLang, firstly get most matched language string from supported language codes.\r
- //\r
- BestPlatformLang = VariableGetBestLanguage (mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);\r
- if (BestPlatformLang != NULL) {\r
- //\r
- // Get the corresponding index in language codes.\r
- //\r
- Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, BestPlatformLang, FALSE);\r
-\r
- //\r
- // Get the corresponding ISO639 language tag according to RFC4646 language tag.\r
- //\r
- BestLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, Index, TRUE);\r
-\r
- //\r
- // Successfully convert PlatformLang to Lang, and set the BestLang value into Lang variable simultaneously.\r
- //\r
- FindVariable (L"Lang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);\r
-\r
- Status = UpdateVariable (L"Lang", &gEfiGlobalVariableGuid, BestLang, ISO_639_2_ENTRY_SIZE + 1, Attributes, &Variable);\r
-\r
- DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a\n", BestPlatformLang, BestLang));\r
-\r
- ASSERT_EFI_ERROR(Status);\r
- }\r
- }\r
-\r
- } else if (StrCmp (VariableName, L"Lang") == 0) {\r
- //\r
- // Update PlatformLang when PlatformLangCodes/LangCodes were set.\r
- //\r
- if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r
- //\r
- // When setting Lang, firstly get most matched language string from supported language codes.\r
- //\r
- BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);\r
- if (BestLang != NULL) {\r
- //\r
- // Get the corresponding index in language codes.\r
- //\r
- Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, BestLang, TRUE);\r
-\r
- //\r
- // Get the corresponding RFC4646 language tag according to ISO639 language tag.\r
- //\r
- BestPlatformLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, Index, FALSE);\r
-\r
- //\r
- // Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.\r
- //\r
- FindVariable (L"PlatformLang", &gEfiGlobalVariableGuid, &Variable, (VARIABLE_GLOBAL *)mVariableModuleGlobal);\r
-\r
- Status = UpdateVariable (L"PlatformLang", &gEfiGlobalVariableGuid, BestPlatformLang,\r
- AsciiStrSize (BestPlatformLang), Attributes, &Variable);\r
-\r
- DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a\n", BestLang, BestPlatformLang));\r
- ASSERT_EFI_ERROR (Status);\r
- }\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Update the variable region with Variable information. These are the same\r
- arguments as the EFI Variable services.\r
-\r
- @param[in] VariableName Name of variable\r
-\r
- @param[in] VendorGuid Guid of variable\r
-\r
- @param[in] Data Variable data\r
-\r
- @param[in] DataSize Size of data. 0 means delete\r
-\r
- @param[in] Attributes Attribues of the variable\r
-\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
-\r
- @retval EFI_SUCCESS The update operation is success.\r
-\r
- @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other data into this region.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-UpdateVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN UINT32 Attributes OPTIONAL,\r
- IN VARIABLE_POINTER_TRACK *Variable\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_HEADER *NextVariable;\r
- UINTN VarNameSize;\r
- UINTN VarNameOffset;\r
- UINTN VarDataOffset;\r
- UINTN VarSize;\r
- VARIABLE_GLOBAL *Global;\r
- UINTN NonVolatileVarableStoreSize;\r
-\r
- Global = &mVariableModuleGlobal->VariableGlobal[Physical];\r
-\r
- if (Variable->CurrPtr != NULL) {\r
- //\r
- // Update/Delete existing variable\r
- //\r
-\r
- if (EfiAtRuntime ()) {\r
- //\r
- // If EfiAtRuntime and the variable is Volatile and Runtime Access,\r
- // the volatile is ReadOnly, and SetVariable should be aborted and\r
- // return EFI_WRITE_PROTECTED.\r
- //\r
- if (Variable->Volatile) {\r
- Status = EFI_WRITE_PROTECTED;\r
- goto Done;\r
- }\r
- //\r
- // Only variable have NV attribute can be updated/deleted in Runtime\r
- //\r
- if ((Variable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
- }\r
-\r
- //\r
- // Setting a data variable with no access, or zero DataSize attributes\r
- // specified causes it to be deleted.\r
- //\r
- if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r
- Variable->CurrPtr->State &= VAR_DELETED;\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, FALSE, TRUE, FALSE);\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- }\r
-\r
- //\r
- // If the variable is marked valid and the same data has been passed in\r
- // then return to the caller immediately.\r
- //\r
- if (Variable->CurrPtr->DataSize == DataSize &&\r
- CompareMem (Data, GetVariableDataPtr (Variable->CurrPtr), DataSize) == 0\r
- ) {\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- } else if (Variable->CurrPtr->State == VAR_ADDED) {\r
- //\r
- // Mark the old variable as in delete transition\r
- //\r
- Variable->CurrPtr->State &= VAR_IN_DELETED_TRANSITION;\r
- }\r
-\r
- } else {\r
- //\r
- // No found existing variable, Create a new variable\r
- //\r
-\r
- //\r
- // Make sure we are trying to create a new variable.\r
- // Setting a data variable with no access, or zero DataSize attributes means to delete it.\r
- //\r
- if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r
- Status = EFI_NOT_FOUND;\r
- goto Done;\r
- }\r
-\r
- //\r
- // Only variable have NV|RT attribute can be created in Runtime\r
- //\r
- if (EfiAtRuntime () &&\r
- (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
- }\r
-\r
- //\r
- // Function part - create a new variable and copy the data.\r
- // Both update a variable and create a variable will come here.\r
- //\r
-\r
- VarNameOffset = sizeof (VARIABLE_HEADER);\r
- VarNameSize = StrSize (VariableName);\r
- VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r
- VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r
-\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
- NonVolatileVarableStoreSize = ((VARIABLE_STORE_HEADER *)(UINTN)(Global->NonVolatileVariableBase))->Size;\r
- if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0)\r
- && ((HEADER_ALIGN (VarSize) + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r
- || (((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0)\r
- && ((HEADER_ALIGN (VarSize) + mVariableModuleGlobal->CommonVariableTotalSize) > NonVolatileVarableStoreSize - sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize)))) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto Done;\r
- }\r
-\r
- NextVariable = (VARIABLE_HEADER *) (UINT8 *) (mVariableModuleGlobal->NonVolatileLastVariableOffset\r
- + (UINTN) Global->NonVolatileVariableBase);\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r
-\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r
- mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VarSize);\r
- } else {\r
- mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);\r
- }\r
- } else {\r
- if ((UINT32) (HEADER_ALIGN (VarSize) + mVariableModuleGlobal->VolatileLastVariableOffset) >\r
- ((VARIABLE_STORE_HEADER *) ((UINTN) (Global->VolatileVariableBase)))->Size\r
- ) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto Done;\r
- }\r
-\r
- NextVariable = (VARIABLE_HEADER *) (UINT8 *) (mVariableModuleGlobal->VolatileLastVariableOffset\r
- + (UINTN) Global->VolatileVariableBase);\r
- mVariableModuleGlobal->VolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r
- }\r
-\r
- NextVariable->StartId = VARIABLE_DATA;\r
- NextVariable->Attributes = Attributes;\r
- NextVariable->State = VAR_ADDED;\r
- NextVariable->Reserved = 0;\r
-\r
- //\r
- // There will be pad bytes after Data, the NextVariable->NameSize and\r
- // NextVariable->NameSize should not include pad size so that variable\r
- // service can get actual size in GetVariable\r
- //\r
- NextVariable->NameSize = (UINT32)VarNameSize;\r
- NextVariable->DataSize = (UINT32)DataSize;\r
-\r
- CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));\r
- CopyMem (\r
- (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r
- VariableName,\r
- VarNameSize\r
- );\r
- CopyMem (\r
- (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r
- Data,\r
- DataSize\r
- );\r
-\r
- //\r
- // Mark the old variable as deleted\r
- //\r
- if (Variable->CurrPtr != NULL) {\r
- Variable->CurrPtr->State &= VAR_DELETED;\r
- }\r
-\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);\r
-\r
- Status = EFI_SUCCESS;\r
-\r
-Done:\r
- return Status;\r
-}\r
-\r
-/**\r
- Finds variable in storage blocks of volatile and non-volatile storage areas.\r
-\r
- This code finds variable in storage blocks of volatile and non-volatile storage areas.\r
- If VariableName is an empty string, then we just return the first\r
- qualified variable without comparing VariableName and VendorGuid.\r
- Otherwise, VariableName and VendorGuid are compared.\r
-\r
- @param VariableName Name of the variable to be found.\r
- @param VendorGuid Vendor GUID to be found.\r
- @param PtrTrack VARIABLE_POINTER_TRACK structure for output,\r
- including the range searched and the target position.\r
- @param Global Pointer to VARIABLE_GLOBAL structure, including\r
- base of volatile variable storage area, base of\r
- NV variable storage area, and a lock.\r
-\r
- @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r
- VendorGuid is NULL.\r
- @retval EFI_SUCCESS Variable successfully found.\r
- @retval EFI_NOT_FOUND Variable not found.\r
-\r
-**/\r
-EFI_STATUS\r
-FindVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack,\r
- IN VARIABLE_GLOBAL *Global\r
- )\r
-{\r
- VARIABLE_HEADER *Variable[2];\r
- VARIABLE_STORE_HEADER *VariableStoreHeader[2];\r
- UINTN Index;\r
-\r
- //\r
- // 0: Non-Volatile, 1: Volatile\r
- //\r
- VariableStoreHeader[0] = (VARIABLE_STORE_HEADER *) ((UINTN) Global->NonVolatileVariableBase);\r
- VariableStoreHeader[1] = (VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase);\r
-\r
- //\r
- // Start Pointers for the variable.\r
- // Actual Data Pointer where data can be written.\r
- //\r
- Variable[0] = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader[0] + 1);\r
- Variable[1] = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader[1] + 1);\r
-\r
- if (VariableName[0] != 0 && VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Find the variable by walk through non-volatile and volatile variable store\r
- //\r
- for (Index = 0; Index < 2; Index++) {\r
- PtrTrack->StartPtr = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader[Index] + 1);\r
- PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);\r
-\r
- while ((Variable[Index] < GetEndPointer (VariableStoreHeader[Index])) && (Variable[Index] != NULL)) {\r
- if (Variable[Index]->StartId == VARIABLE_DATA && Variable[Index]->State == VAR_ADDED) {\r
- if (!(EfiAtRuntime () && ((Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0))) {\r
- if (VariableName[0] == 0) {\r
- PtrTrack->CurrPtr = Variable[Index];\r
- PtrTrack->Volatile = (BOOLEAN) Index;\r
- return EFI_SUCCESS;\r
- } else {\r
- if (CompareGuid (VendorGuid, &Variable[Index]->VendorGuid)) {\r
- if (CompareMem (VariableName, GET_VARIABLE_NAME_PTR (Variable[Index]), Variable[Index]->NameSize) == 0) {\r
- PtrTrack->CurrPtr = Variable[Index];\r
- PtrTrack->Volatile = (BOOLEAN) Index;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
- }\r
- }\r
-\r
- Variable[Index] = GetNextVariablePtr (Variable[Index]);\r
- }\r
- }\r
- PtrTrack->CurrPtr = NULL;\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-/**\r
- This code finds variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- @param VariableName A Null-terminated Unicode string that is the name of\r
- the vendor's variable.\r
- @param VendorGuid A unique identifier for the vendor.\r
- @param Attributes If not NULL, a pointer to the memory location to return the\r
- attributes bitmask for the variable.\r
- @param DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param Data On input, the size in bytes of the return Data buffer.\r
- On output, the size of data returned in Data.\r
- @param Global Pointer to VARIABLE_GLOBAL structure\r
-\r
- @retval EFI_SUCCESS The function completed successfully.\r
- @retval EFI_NOT_FOUND The variable was not found.\r
- @retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result. DataSize has\r
- been updated with the size needed to complete the request.\r
- @retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-EmuGetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT UINT32 *Attributes OPTIONAL,\r
- IN OUT UINTN *DataSize,\r
- OUT VOID *Data,\r
- IN VARIABLE_GLOBAL *Global\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINTN VarDataSize;\r
- EFI_STATUS Status;\r
- UINT8 *VariableDataPtr;\r
-\r
- if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableName[0] == 0) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);\r
-\r
- //\r
- // Find existing variable\r
- //\r
- Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
-\r
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- //\r
- // Get data size\r
- //\r
- VarDataSize = Variable.CurrPtr->DataSize;\r
- if (*DataSize >= VarDataSize) {\r
- if (Data == NULL) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
- VariableDataPtr = GetVariableDataPtr (Variable.CurrPtr);\r
- ASSERT (VariableDataPtr != NULL);\r
-\r
- CopyMem (Data, VariableDataPtr, VarDataSize);\r
- if (Attributes != NULL) {\r
- *Attributes = Variable.CurrPtr->Attributes;\r
- }\r
-\r
- *DataSize = VarDataSize;\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- } else {\r
- *DataSize = VarDataSize;\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- goto Done;\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
-\r
- This code Finds the Next available variable.\r
-\r
- @param VariableNameSize The size of the VariableName buffer. The size must be large enough to fit input\r
- string supplied in VariableName buffer.\r
- @param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().\r
- On output, returns the Null-terminated Unicode string of the current variable.\r
- @param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().\r
- On output, returns the VendorGuid of the current variable.\r
- @param Global Pointer to VARIABLE_GLOBAL structure.\r
-\r
- @retval EFI_SUCCESS The function completed successfully.\r
- @retval EFI_NOT_FOUND The next variable was not found.\r
- @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.\r
- VariableNameSize has been updated with the size needed to complete the request.\r
- @retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.\r
- @retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and\r
- GUID of an existing variable.\r
- @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first VariableNameSize bytes of\r
- the input VariableName buffer.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-EmuGetNextVariableName (\r
- IN OUT UINTN *VariableNameSize,\r
- IN OUT CHAR16 *VariableName,\r
- IN OUT EFI_GUID *VendorGuid,\r
- IN VARIABLE_GLOBAL *Global\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINTN VarNameSize;\r
- EFI_STATUS Status;\r
- UINTN MaxLen;\r
-\r
- if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Calculate the possible maximum length of name string, including the Null terminator.\r
- //\r
- MaxLen = *VariableNameSize / sizeof (CHAR16);\r
- if ((MaxLen == 0) || (StrnLenS (VariableName, MaxLen) == MaxLen)) {\r
- //\r
- // Null-terminator is not found in the first VariableNameSize bytes of the input VariableName buffer,\r
- // follow spec to return EFI_INVALID_PARAMETER.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);\r
-\r
- Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
-\r
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- //\r
- // For VariableName is an empty string, FindVariable() will try to find and return\r
- // the first qualified variable, and if FindVariable() returns error (EFI_NOT_FOUND)\r
- // as no any variable is found, still go to return the error (EFI_NOT_FOUND).\r
- //\r
- if (VariableName[0] != 0) {\r
- //\r
- // For VariableName is not an empty string, and FindVariable() returns error as\r
- // VariableName and VendorGuid are not a name and GUID of an existing variable,\r
- // there is no way to get next variable, follow spec to return EFI_INVALID_PARAMETER.\r
- //\r
- Status = EFI_INVALID_PARAMETER;\r
- }\r
- goto Done;\r
- }\r
-\r
- while (TRUE) {\r
- if (VariableName[0] != 0) {\r
- //\r
- // If variable name is not NULL, get next variable\r
- //\r
- Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
- }\r
- //\r
- // If both volatile and non-volatile variable store are parsed,\r
- // return not found\r
- //\r
- if (Variable.CurrPtr >= Variable.EndPtr || Variable.CurrPtr == NULL) {\r
- Variable.Volatile = (BOOLEAN) (Variable.Volatile ^ ((BOOLEAN) 0x1));\r
- if (Variable.Volatile) {\r
- Variable.StartPtr = (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) (Global->VolatileVariableBase + sizeof (VARIABLE_STORE_HEADER)));\r
- Variable.EndPtr = (VARIABLE_HEADER *) GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase));\r
- } else {\r
- Status = EFI_NOT_FOUND;\r
- goto Done;\r
- }\r
-\r
- Variable.CurrPtr = Variable.StartPtr;\r
- if (Variable.CurrPtr->StartId != VARIABLE_DATA) {\r
- continue;\r
- }\r
- }\r
- //\r
- // Variable is found\r
- //\r
- if (Variable.CurrPtr->StartId == VARIABLE_DATA && Variable.CurrPtr->State == VAR_ADDED) {\r
- if (!(EfiAtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0))) {\r
- VarNameSize = Variable.CurrPtr->NameSize;\r
- if (VarNameSize <= *VariableNameSize) {\r
- CopyMem (\r
- VariableName,\r
- GET_VARIABLE_NAME_PTR (Variable.CurrPtr),\r
- VarNameSize\r
- );\r
- CopyMem (\r
- VendorGuid,\r
- &Variable.CurrPtr->VendorGuid,\r
- sizeof (EFI_GUID)\r
- );\r
- Status = EFI_SUCCESS;\r
- } else {\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
- *VariableNameSize = VarNameSize;\r
- goto Done;\r
- }\r
- }\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
- return Status;\r
-\r
-}\r
-\r
-/**\r
-\r
- This code sets variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- @param VariableName A Null-terminated Unicode string that is the name of the vendor's\r
- variable. Each VariableName is unique for each\r
- VendorGuid. VariableName must contain 1 or more\r
- Unicode characters. If VariableName is an empty Unicode\r
- string, then EFI_INVALID_PARAMETER is returned.\r
- @param VendorGuid A unique identifier for the vendor\r
- @param Attributes Attributes bitmask to set for the variable\r
- @param DataSize The size in bytes of the Data buffer. A size of zero causes the\r
- variable to be deleted.\r
- @param Data The contents for the variable\r
- @param Global Pointer to VARIABLE_GLOBAL structure\r
- @param VolatileOffset The offset of last volatile variable\r
- @param NonVolatileOffset The offset of last non-volatile variable\r
-\r
- @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as\r
- defined by the Attributes.\r
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the\r
- DataSize exceeds the maximum allowed, or VariableName is an empty\r
- Unicode string, or VendorGuid is NULL.\r
- @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.\r
- @retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.\r
- @retval EFI_WRITE_PROTECTED The variable in question is read-only or cannot be deleted.\r
- @retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-EmuSetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data,\r
- IN VARIABLE_GLOBAL *Global,\r
- IN UINTN *VolatileOffset,\r
- IN UINTN *NonVolatileOffset\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK Variable;\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Check input parameters\r
- //\r
- if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (DataSize != 0 && Data == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Not support authenticated variable write yet.\r
- //\r
- if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Make sure if runtime bit is set, boot service bit is set also\r
- //\r
- if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
-\r
- if ((UINTN)(~0) - DataSize < StrSize(VariableName)){\r
- //\r
- // Prevent whole variable size overflow\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // The size of the VariableName, including the Unicode Null in bytes plus\r
- // the DataSize is limited to maximum size of PcdGet32 (PcdMaxHardwareErrorVariableSize)\r
- // bytes for HwErrRec, and PcdGet32 (PcdMaxVariableSize) bytes for the others.\r
- //\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- if (StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // According to UEFI spec, HARDWARE_ERROR_RECORD variable name convention should be L"HwErrRecXXXX"\r
- //\r
- if (StrnCmp(VariableName, L"HwErrRec", StrLen(L"HwErrRec")) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- } else {\r
- //\r
- // The size of the VariableName, including the Unicode Null in bytes plus\r
- // the DataSize is limited to maximum size of PcdGet32 (PcdMaxVariableSize) bytes.\r
- //\r
- if (StrSize (VariableName) + DataSize > PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);\r
-\r
- //\r
- // Check whether the input variable is already existed\r
- //\r
-\r
- Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
-\r
- //\r
- // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang\r
- //\r
- AutoUpdateLangVariable (VariableName, Data, DataSize);\r
-\r
- Status = UpdateVariable (VariableName, VendorGuid, Data, DataSize, Attributes, &Variable);\r
-\r
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
-\r
- This code returns information about the EFI variables.\r
-\r
- @param Attributes Attributes bitmask to specify the type of variables\r
- on which to return information.\r
- @param MaximumVariableStorageSize On output the maximum size of the storage space available for\r
- the EFI variables associated with the attributes specified.\r
- @param RemainingVariableStorageSize Returns the remaining size of the storage space available for EFI\r
- variables associated with the attributes specified.\r
- @param MaximumVariableSize Returns the maximum size of an individual EFI variable\r
- associated with the attributes specified.\r
- @param Global Pointer to VARIABLE_GLOBAL structure.\r
-\r
- @retval EFI_SUCCESS Valid answer returned.\r
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied\r
- @retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the\r
- MaximumVariableStorageSize, RemainingVariableStorageSize,\r
- MaximumVariableSize are undefined.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-EmuQueryVariableInfo (\r
- IN UINT32 Attributes,\r
- OUT UINT64 *MaximumVariableStorageSize,\r
- OUT UINT64 *RemainingVariableStorageSize,\r
- OUT UINT64 *MaximumVariableSize,\r
- IN VARIABLE_GLOBAL *Global\r
- )\r
-{\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *NextVariable;\r
- UINT64 VariableSize;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- UINT64 CommonVariableTotalSize;\r
- UINT64 HwErrVariableTotalSize;\r
-\r
- CommonVariableTotalSize = 0;\r
- HwErrVariableTotalSize = 0;\r
-\r
- if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == 0) {\r
- //\r
- // Make sure the Attributes combination is supported by the platform.\r
- //\r
- return EFI_UNSUPPORTED;\r
- } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r
- //\r
- // Make sure if runtime bit is set, boot service bit is set also.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- } else if (EfiAtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r
- //\r
- // Make sure RT Attribute is set if we are in Runtime phase.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- } else if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- //\r
- // Make sure Hw Attribute is set with NV.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- } else if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r
- //\r
- // Not support authentiated variable write yet.\r
- //\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);\r
-\r
- if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
- //\r
- // Query is Volatile related.\r
- //\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase);\r
- } else {\r
- //\r
- // Query is Non-Volatile related.\r
- //\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) Global->NonVolatileVariableBase);\r
- }\r
-\r
- //\r
- // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize\r
- // with the storage size (excluding the storage header size)\r
- //\r
- *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r
-\r
- //\r
- // Harware error record variable needs larger size.\r
- //\r
- if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- *MaximumVariableStorageSize = PcdGet32 (PcdHwErrStorageSize);\r
- *MaximumVariableSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r
- } else {\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
- ASSERT (PcdGet32 (PcdHwErrStorageSize) < VariableStoreHeader->Size);\r
- *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize);\r
- }\r
-\r
- //\r
- // Let *MaximumVariableSize be PcdGet32 (PcdMaxVariableSize) with the exception of the variable header size.\r
- //\r
- *MaximumVariableSize = PcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER);\r
- }\r
-\r
- //\r
- // Point to the starting address of the variables.\r
- //\r
- Variable = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader + 1);\r
-\r
- //\r
- // Now walk through the related variable store.\r
- //\r
- while (Variable < GetEndPointer (VariableStoreHeader)) {\r
- NextVariable = GetNextVariablePtr(Variable);\r
- if (NextVariable == NULL) {\r
- break;\r
- }\r
- VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r
-\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else {\r
- CommonVariableTotalSize += VariableSize;\r
- }\r
-\r
- //\r
- // Go to the next one.\r
- //\r
- Variable = NextVariable;\r
- }\r
-\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD){\r
- *RemainingVariableStorageSize = *MaximumVariableStorageSize - HwErrVariableTotalSize;\r
- } else {\r
- *RemainingVariableStorageSize = *MaximumVariableStorageSize - CommonVariableTotalSize;\r
- }\r
-\r
- if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {\r
- *MaximumVariableSize = 0;\r
- } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) < *MaximumVariableSize) {\r
- *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (VARIABLE_HEADER);\r
- }\r
-\r
- ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Initializes variable store area.\r
-\r
- This function allocates memory space for variable store area and initializes its attributes.\r
-\r
- @param VolatileStore Indicates if the variable store is volatile.\r
-\r
-**/\r
-EFI_STATUS\r
-InitializeVariableStore (\r
- IN BOOLEAN VolatileStore\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VariableStore;\r
- BOOLEAN FullyInitializeStore;\r
- EFI_PHYSICAL_ADDRESS *VariableBase;\r
- UINTN *LastVariableOffset;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- VARIABLE_HEADER *Variable;\r
- VOID *VariableData;\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
-\r
- FullyInitializeStore = TRUE;\r
-\r
- if (VolatileStore) {\r
- VariableBase = &mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase;\r
- LastVariableOffset = &mVariableModuleGlobal->VolatileLastVariableOffset;\r
- } else {\r
- VariableBase = &mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase;\r
- LastVariableOffset = &mVariableModuleGlobal->NonVolatileLastVariableOffset;\r
- }\r
-\r
- //\r
- // Note that in EdkII variable driver implementation, Hardware Error Record type variable\r
- // is stored with common variable in the same NV region. So the platform integrator should\r
- // ensure that the value of PcdHwErrStorageSize is less than or equal to the value of\r
- // PcdVariableStoreSize.\r
- //\r
- ASSERT (PcdGet32 (PcdHwErrStorageSize) <= PcdGet32 (PcdVariableStoreSize));\r
-\r
- //\r
- // Allocate memory for variable store.\r
- //\r
- if (VolatileStore || (PcdGet64 (PcdEmuVariableNvStoreReserved) == 0)) {\r
- VariableStore = (VARIABLE_STORE_HEADER *) AllocateRuntimePool (PcdGet32 (PcdVariableStoreSize));\r
- } else {\r
- //\r
- // A memory location has been reserved for the NV variable store. Certain\r
- // platforms may be able to preserve a memory range across system resets,\r
- // thereby providing better NV variable emulation.\r
- //\r
- VariableStore =\r
- (VARIABLE_STORE_HEADER *)(VOID*)(UINTN)\r
- PcdGet64 (PcdEmuVariableNvStoreReserved);\r
- if (\r
- (VariableStore->Size == PcdGet32 (PcdVariableStoreSize)) &&\r
- (VariableStore->Format == VARIABLE_STORE_FORMATTED) &&\r
- (VariableStore->State == VARIABLE_STORE_HEALTHY)\r
- ) {\r
- DEBUG((\r
- EFI_D_INFO,\r
- "Variable Store reserved at %p appears to be valid\n",\r
- VariableStore\r
- ));\r
- FullyInitializeStore = FALSE;\r
- }\r
- }\r
-\r
- if (NULL == VariableStore) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- if (FullyInitializeStore) {\r
- SetMem (VariableStore, PcdGet32 (PcdVariableStoreSize), 0xff);\r
- }\r
-\r
- //\r
- // Variable Specific Data\r
- //\r
- *VariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStore;\r
- InitializeLocationForLastVariableOffset (VariableStore, LastVariableOffset);\r
-\r
- CopyGuid (&VariableStore->Signature, &gEfiVariableGuid);\r
- VariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r
- VariableStore->Format = VARIABLE_STORE_FORMATTED;\r
- VariableStore->State = VARIABLE_STORE_HEALTHY;\r
- VariableStore->Reserved = 0;\r
- VariableStore->Reserved1 = 0;\r
-\r
- if (!VolatileStore) {\r
- //\r
- // Get HOB variable store.\r
- //\r
- GuidHob = GetFirstGuidHob (&gEfiVariableGuid);\r
- if (GuidHob != NULL) {\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);\r
- if (CompareGuid (&VariableStoreHeader->Signature, &gEfiVariableGuid) &&\r
- (VariableStoreHeader->Format == VARIABLE_STORE_FORMATTED) &&\r
- (VariableStoreHeader->State == VARIABLE_STORE_HEALTHY)\r
- ) {\r
- DEBUG ((EFI_D_INFO, "HOB Variable Store appears to be valid.\n"));\r
- //\r
- // Flush the HOB variable to Emulation Variable storage.\r
- //\r
- for ( Variable = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader + 1)\r
- ; (Variable < GetEndPointer (VariableStoreHeader) && (Variable != NULL))\r
- ; Variable = GetNextVariablePtr (Variable)\r
- ) {\r
- ASSERT (Variable->State == VAR_ADDED);\r
- ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);\r
- VariableData = GetVariableDataPtr (Variable);\r
- Status = EmuSetVariable (\r
- GET_VARIABLE_NAME_PTR (Variable),\r
- &Variable->VendorGuid,\r
- Variable->Attributes,\r
- Variable->DataSize,\r
- VariableData,\r
- &mVariableModuleGlobal->VariableGlobal[Physical],\r
- &mVariableModuleGlobal->VolatileLastVariableOffset,\r
- &mVariableModuleGlobal->NonVolatileLastVariableOffset\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
- }\r
- }\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Initializes variable store area for non-volatile and volatile variable.\r
-\r
- This function allocates and initializes memory space for global context of ESAL\r
- variable service and variable store area for non-volatile and volatile variable.\r
-\r
- @param ImageHandle The Image handle of this driver.\r
- @param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableCommonInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Allocate memory for mVariableModuleGlobal\r
- //\r
- mVariableModuleGlobal = (ESAL_VARIABLE_GLOBAL *) AllocateRuntimeZeroPool (\r
- sizeof (ESAL_VARIABLE_GLOBAL)\r
- );\r
- if (NULL == mVariableModuleGlobal) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, TPL_NOTIFY);\r
-\r
- //\r
- // Intialize volatile variable store\r
- //\r
- Status = InitializeVariableStore (TRUE);\r
- if (EFI_ERROR (Status)) {\r
- FreePool(mVariableModuleGlobal);\r
- return Status;\r
- }\r
- //\r
- // Intialize non volatile variable store\r
- //\r
- Status = InitializeVariableStore (FALSE);\r
-\r
- return Status;\r
-}\r
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