/** @file\r
\r
- Implement all four UEFI Runtime Variable services for the nonvolatile\r
- and volatile storage space and install variable architecture protocol.\r
+ The common variable operation routines shared by DXE_RINTIME variable \r
+ module and DXE_SMM variable module.\r
\r
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2011, 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
#include "Variable.h"\r
\r
VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r
-EFI_EVENT mVirtualAddressChangeEvent = NULL;\r
-EFI_HANDLE mHandle = NULL;\r
\r
///\r
-/// The current Hii implementation accesses this variable many times on every boot.\r
-/// Other common variables are only accessed once. This is why this cache algorithm\r
-/// only targets a single variable. Probably to get an performance improvement out of\r
-/// a Cache you would need a cache that improves the search performance for a variable.\r
+/// Define a memory cache that improves the search performance for a variable.\r
///\r
-VARIABLE_CACHE_ENTRY mVariableCache[] = {\r
- {\r
- &gEfiGlobalVariableGuid,\r
- L"Lang",\r
- 0x00000000,\r
- 0x00,\r
- NULL\r
- },\r
- {\r
- &gEfiGlobalVariableGuid,\r
- L"PlatformLang",\r
- 0x00000000,\r
- 0x00,\r
- NULL\r
- }\r
-};\r
-\r
-VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r
-EFI_EVENT mFvbRegistration = NULL;\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
- 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
+VARIABLE_STORE_HEADER *mNvVariableCache = NULL;\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
+/// The memory entry used for variable statistics data.\r
+///\r
+VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r
\r
\r
/**\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] 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
\r
if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r
\r
- if (EfiAtRuntime ()) {\r
- // Don't collect statistics at runtime\r
+ if (AtRuntime ()) {\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
+ // 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
ASSERT (gVariableInfo->Name != NULL);\r
StrCpy (gVariableInfo->Name, VariableName);\r
gVariableInfo->Volatile = Volatile;\r
-\r
- gBS->InstallConfigurationTable (&gEfiVariableGuid, gVariableInfo);\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
+ // 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
This function writes data to the FWH at the correct LBA even if the LBAs\r
are fragmented.\r
\r
- @param Global Pointer to VARAIBLE_GLOBAL structure\r
- @param Volatile Point out the Variable is Volatile or Non-Volatile\r
- @param SetByIndex TRUE if target pointer is given as index\r
- FALSE if target pointer is absolute\r
- @param Fvb Pointer to the writable FVB protocol\r
+ @param Global Pointer to VARAIBLE_GLOBAL structure.\r
+ @param Volatile Point out the Variable is Volatile or Non-Volatile.\r
+ @param SetByIndex TRUE if target pointer is given as index.\r
+ FALSE if target pointer is absolute.\r
+ @param Fvb Pointer to the writable FVB protocol.\r
@param DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r
- structure\r
- @param DataSize Size of data to be written\r
- @param Buffer Pointer to the buffer from which data is written\r
+ structure.\r
+ @param DataSize Size of data to be written.\r
+ @param Buffer Pointer to the buffer from which data is written.\r
\r
- @retval EFI_INVALID_PARAMETER Parameters not valid\r
- @retval EFI_SUCCESS Variable store successfully updated\r
+ @retval EFI_INVALID_PARAMETER Parameters not valid.\r
+ @retval EFI_SUCCESS Variable store successfully updated.\r
\r
**/\r
EFI_STATUS\r
DataPtr = DataPtrIndex;\r
\r
//\r
- // Check if the Data is Volatile\r
+ // Check if the Data is Volatile.\r
//\r
if (!Volatile) {\r
+ ASSERT (Fvb != NULL);\r
Status = Fvb->GetPhysicalAddress(Fvb, &FvVolHdr);\r
ASSERT_EFI_ERROR (Status);\r
\r
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvVolHdr);\r
//\r
// Data Pointer should point to the actual Address where data is to be\r
- // written\r
+ // written.\r
//\r
if (SetByIndex) {\r
DataPtr += mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r
} else {\r
//\r
// Data Pointer should point to the actual Address where data is to be\r
- // written\r
+ // written.\r
//\r
VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r
if (SetByIndex) {\r
}\r
\r
//\r
- // If we are here we are dealing with Non-Volatile Variables\r
+ // If we are here we are dealing with Non-Volatile Variables.\r
//\r
LinearOffset = (UINTN) FwVolHeader;\r
CurrWritePtr = (UINTN) DataPtr;\r
\r
@param VarStoreHeader Pointer to the Variable Store Header.\r
\r
- @retval EfiRaw Variable store status is raw\r
- @retval EfiValid Variable store status is valid\r
- @retval EfiInvalid Variable store status is invalid\r
+ @retval EfiRaw Variable store status is raw.\r
+ @retval EfiValid Variable store status is valid.\r
+ @retval EfiInvalid Variable store status is invalid.\r
\r
**/\r
VARIABLE_STORE_STATUS\r
\r
This code gets the size of name of variable.\r
\r
- @param Variable Pointer to the Variable Header\r
+ @param Variable Pointer to the Variable Header.\r
\r
- @return UINTN Size of variable in bytes\r
+ @return UINTN Size of variable in bytes.\r
\r
**/\r
UINTN\r
\r
This code gets the size of variable data.\r
\r
- @param Variable Pointer to the Variable Header\r
+ @param Variable Pointer to the Variable Header.\r
\r
- @return Size of variable in bytes\r
+ @return Size of variable in bytes.\r
\r
**/\r
UINTN\r
\r
This code gets the pointer to the variable name.\r
\r
- @param Variable Pointer to the Variable Header\r
+ @param Variable Pointer to the Variable Header.\r
\r
- @return Pointer to Variable Name which is Unicode encoding\r
+ @return Pointer to Variable Name which is Unicode encoding.\r
\r
**/\r
CHAR16 *\r
\r
This code gets the pointer to the variable data.\r
\r
- @param Variable Pointer to the Variable Header\r
+ @param Variable Pointer to the Variable Header.\r
\r
- @return Pointer to Variable Data\r
+ @return Pointer to Variable Data.\r
\r
**/\r
UINT8 *\r
UINTN Value;\r
\r
//\r
- // Be careful about pad size for alignment\r
+ // Be careful about pad size for alignment.\r
//\r
Value = (UINTN) GetVariableNamePtr (Variable);\r
Value += NameSizeOfVariable (Variable);\r
\r
This code gets the pointer to the next variable header.\r
\r
- @param Variable Pointer to the Variable Header\r
+ @param Variable Pointer to the Variable Header.\r
\r
- @return Pointer to next variable header\r
+ @return Pointer to next variable header.\r
\r
**/\r
VARIABLE_HEADER *\r
Value += GET_PAD_SIZE (DataSizeOfVariable (Variable));\r
\r
//\r
- // Be careful about pad size for alignment\r
+ // Be careful about pad size for alignment.\r
//\r
return (VARIABLE_HEADER *) HEADER_ALIGN (Value);\r
}\r
\r
@param VarStoreHeader Pointer to the Variable Store Header.\r
\r
- @return Pointer to the first variable header\r
+ @return Pointer to the first variable header.\r
\r
**/\r
VARIABLE_HEADER *\r
)\r
{\r
//\r
- // The end of variable store\r
+ // The end of variable store.\r
//\r
return (VARIABLE_HEADER *) HEADER_ALIGN (VarStoreHeader + 1);\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 VarStoreHeader Pointer to the Variable Store Header\r
+ @param VarStoreHeader Pointer to the Variable Store Header.\r
\r
- @return Pointer to the end of the variable storage area \r
+ @return Pointer to the end of the variable storage area. \r
\r
**/\r
VARIABLE_HEADER *\r
\r
Variable store garbage collection and reclaim operation.\r
\r
- @param VariableBase Base address of variable store\r
- @param LastVariableOffset Offset of last variable\r
- @param IsVolatile The variable store is volatile or not,\r
- if it is non-volatile, need FTW\r
- @param UpdatingVariable Pointer to updateing variable.\r
+ @param VariableBase Base address of variable store.\r
+ @param LastVariableOffset Offset of last variable.\r
+ @param IsVolatile The variable store is volatile or not;\r
+ if it is non-volatile, need FTW.\r
+ @param UpdatingVariable Pointer to updating variable.\r
\r
@return EFI_OUT_OF_RESOURCES\r
@return EFI_SUCCESS\r
\r
VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r
//\r
- // recaluate the total size of Common/HwErr type variables in non-volatile area.\r
+ // Recalculate the total size of Common/HwErr type variables in non-volatile area.\r
//\r
if (!IsVolatile) {\r
mVariableModuleGlobal->CommonVariableTotalSize = 0;\r
SetMem (ValidBuffer, MaximumBufferSize, 0xff);\r
\r
//\r
- // Copy variable store header\r
+ // Copy variable store header.\r
//\r
CopyMem (ValidBuffer, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r
CurrPtr = (UINT8 *) GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r
\r
//\r
- // Reinstall all ADDED variables as long as they are not identical to Updating Variable\r
+ // Reinstall all ADDED variables as long as they are not identical to Updating Variable.\r
// \r
Variable = GetStartPointer (VariableStoreHeader);\r
while (IsValidVariableHeader (Variable)) {\r
}\r
\r
//\r
- // Reinstall the variable being updated if it is not NULL\r
+ // Reinstall the variable being updated if it is not NULL.\r
//\r
if (UpdatingVariable != NULL) {\r
VariableSize = (UINTN)(GetNextVariablePtr (UpdatingVariable)) - (UINTN)UpdatingVariable;\r
}\r
\r
//\r
- // Reinstall all in delete transition variables\r
+ // Reinstall all in delete transition variables.\r
// \r
Variable = GetStartPointer (VariableStoreHeader);\r
while (IsValidVariableHeader (Variable)) {\r
}\r
if (!FoundAdded) {\r
//\r
- // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED\r
+ // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED.\r
//\r
VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r
\r
if (IsVolatile) {\r
//\r
- // If volatile variable store, just copy valid buffer\r
+ // If volatile variable store, just copy valid buffer.\r
//\r
SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r
CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) (CurrPtr - (UINT8 *) ValidBuffer));\r
- Status = EFI_SUCCESS;\r
+ Status = EFI_SUCCESS;\r
} else {\r
//\r
// If non-volatile variable store, perform FTW here.\r
ValidBuffer,\r
(UINTN) (CurrPtr - (UINT8 *) ValidBuffer)\r
);\r
+ CopyMem (mNvVariableCache, (CHAR8 *)(UINTN)VariableBase, VariableStoreHeader->Size);\r
}\r
if (!EFI_ERROR (Status)) {\r
*LastVariableOffset = (UINTN) (CurrPtr - (UINT8 *) ValidBuffer);\r
}\r
\r
\r
-/**\r
- Update the Cache with Variable information. These are the same \r
- arguments as the EFI Variable services.\r
-\r
- @param[in] VariableName Name of variable\r
- @param[in] VendorGuid Guid of variable\r
- @param[in] Attributes Attribues of the variable\r
- @param[in] DataSize Size of data. 0 means delete\r
- @param[in] Data Variable data\r
-\r
-**/\r
-VOID\r
-UpdateVariableCache (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- VARIABLE_CACHE_ENTRY *Entry;\r
- UINTN Index;\r
-\r
- if (EfiAtRuntime ()) {\r
- //\r
- // Don't use the cache at runtime\r
- // \r
- return;\r
- }\r
-\r
- for (Index = 0, Entry = mVariableCache; Index < sizeof (mVariableCache)/sizeof (VARIABLE_CACHE_ENTRY); Index++, Entry++) {\r
- if (CompareGuid (VendorGuid, Entry->Guid)) {\r
- if (StrCmp (VariableName, Entry->Name) == 0) { \r
- Entry->Attributes = Attributes;\r
- if (DataSize == 0) {\r
- //\r
- // Delete Case\r
- //\r
- if (Entry->DataSize != 0) {\r
- FreePool (Entry->Data);\r
- }\r
- Entry->DataSize = DataSize;\r
- } else if (DataSize == Entry->DataSize) {\r
- CopyMem (Entry->Data, Data, DataSize);\r
- } else {\r
- Entry->Data = AllocatePool (DataSize);\r
- ASSERT (Entry->Data != NULL);\r
-\r
- Entry->DataSize = DataSize;\r
- CopyMem (Entry->Data, Data, DataSize);\r
- }\r
- }\r
- }\r
- }\r
-}\r
-\r
-\r
-/**\r
- Search the cache to check if the variable is in it.\r
-\r
- This function searches the variable cache. If the variable to find exists, return its data\r
- and attributes.\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.\r
- @param VendorGuid A unique identifier for the vendor\r
- @param Attributes Pointer to the attributes bitmask of the variable for output.\r
- @param DataSize On input, size of the buffer of Data.\r
- On output, size of the variable's data.\r
- @param Data Pointer to the data buffer for output.\r
-\r
- @retval EFI_SUCCESS VariableGuid & VariableName data was returned.\r
- @retval EFI_NOT_FOUND No matching variable found in cache.\r
- @retval EFI_BUFFER_TOO_SMALL *DataSize is smaller than size of the variable's data to return.\r
-\r
-**/\r
-EFI_STATUS\r
-FindVariableInCache (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT UINT32 *Attributes OPTIONAL,\r
- IN OUT UINTN *DataSize,\r
- OUT VOID *Data\r
- )\r
-{\r
- VARIABLE_CACHE_ENTRY *Entry;\r
- UINTN Index;\r
-\r
- if (EfiAtRuntime ()) {\r
- // Don't use the cache at runtime\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- for (Index = 0, Entry = mVariableCache; Index < sizeof (mVariableCache)/sizeof (VARIABLE_CACHE_ENTRY); Index++, Entry++) {\r
- if (CompareGuid (VendorGuid, Entry->Guid)) {\r
- if (StrCmp (VariableName, Entry->Name) == 0) {\r
- if (Entry->DataSize == 0) {\r
- // Variable was deleted so return not found\r
- return EFI_NOT_FOUND;\r
- } else if (Entry->DataSize > *DataSize) {\r
- // If the buffer is too small return correct size\r
- *DataSize = Entry->DataSize;\r
- return EFI_BUFFER_TOO_SMALL;\r
- } else {\r
- *DataSize = Entry->DataSize;\r
- // Return the data\r
- CopyMem (Data, Entry->Data, Entry->DataSize);\r
- if (Attributes != NULL) {\r
- *Attributes = Entry->Attributes;\r
- }\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
- }\r
- \r
- return EFI_NOT_FOUND;\r
-}\r
-\r
/**\r
Finds variable in storage blocks of volatile and non-volatile storage areas.\r
\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 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
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
+ VendorGuid is NULL.\r
+ @retval EFI_SUCCESS Variable successfully found.\r
@retval EFI_NOT_FOUND Variable not found\r
\r
**/\r
VOID *Point;\r
\r
//\r
- // 0: Volatile, 1: Non-Volatile\r
+ // 0: Volatile, 1: Non-Volatile.\r
// The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName\r
- // make use of this mapping to implement search algorithme.\r
+ // make use of this mapping to implement search algorithm.\r
//\r
VariableStoreHeader[0] = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r
- VariableStoreHeader[1] = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
+ VariableStoreHeader[1] = mNvVariableCache;\r
\r
//\r
// Start Pointers for the variable.\r
}\r
\r
//\r
- // Find the variable by walk through volatile and then non-volatile variable store\r
+ // Find the variable by walk through volatile and then non-volatile variable store.\r
//\r
InDeletedVariable = NULL;\r
InDeletedStorageIndex = 0;\r
if (Variable[Index]->State == VAR_ADDED || \r
Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r
) {\r
- if (!EfiAtRuntime () || ((Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r
+ if (!AtRuntime () || ((Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r
if (VariableName[0] == 0) {\r
if (Variable[Index]->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
InDeletedVariable = Variable[Index];\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
+ @retval The index of language in the language codes.\r
\r
**/\r
UINTN\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
+ This code is used to get corresponding language strings 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
The return value is "fr".\r
\r
@param SupportedLang Platform supported language codes.\r
- @param Index the index in 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
+ @retval The language string in the language codes.\r
\r
**/\r
CHAR8 *\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
+ // According to the index of Lang string in SupportedLang string to get the language.\r
+ // This code will be invoked in RUNTIME, therefore there is not a 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
+ \r
} else {\r
while (TRUE) {\r
//\r
- // take semicolon as delimitation, sequentially traverse supported language codes.\r
+ // Take semicolon as delimitation, sequentially traverse supported language codes.\r
//\r
for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {\r
Supported++;\r
}\r
if (SubIndex == Index) {\r
//\r
- // according to the index of Lang string in SupportedLang string to get the language.\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
return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);\r
}\r
SubIndex++;\r
- \r
+\r
//\r
// Skip ';' characters in Supported\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
+ @param[in] VariableName Name of variable.\r
\r
- @param[in] Data Variable data\r
+ @param[in] Data Variable data.\r
\r
- @param[in] DataSize Size of data. 0 means delete\r
+ @param[in] DataSize Size of data. 0 means delete.\r
\r
**/\r
VOID\r
//\r
// PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r
//\r
- if (EfiAtRuntime ()) {\r
+ if (AtRuntime ()) {\r
return;\r
}\r
\r
//\r
// LangCodes is a volatile variable, so it can not be updated at runtime.\r
//\r
- if (EfiAtRuntime ()) {\r
+ if (AtRuntime ()) {\r
return;\r
}\r
\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
+ Status = UpdateVariable (L"Lang", &gEfiGlobalVariableGuid, BestLang,\r
+ 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
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
+ @param[in] VariableName Name of variable.\r
+ @param[in] VendorGuid Guid of variable.\r
+ @param[in] Data Variable data.\r
+ @param[in] DataSize Size of data. 0 means delete.\r
+ @param[in] Attributes Attribues of the variable.\r
+ @param[in] CacheVariable 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
+ 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 *CacheVariable\r
)\r
{\r
EFI_STATUS Status;\r
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
UINT8 State;\r
BOOLEAN Reclaimed;\r
+ VARIABLE_POINTER_TRACK *Variable;\r
+ VARIABLE_POINTER_TRACK NvVariable;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+ UINTN CacheOffset;\r
\r
- Fvb = mVariableModuleGlobal->FvbInstance;\r
- Reclaimed = FALSE;\r
+ if ((mVariableModuleGlobal->FvbInstance == NULL) && ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0)) {\r
+ //\r
+ // The FVB protocol is not ready. Trying to update NV variable prior to the installation\r
+ // of EFI_VARIABLE_WRITE_ARCH_PROTOCOL.\r
+ //\r
+ return EFI_NOT_AVAILABLE_YET; \r
+ }\r
+\r
+ if ((CacheVariable->CurrPtr == NULL) || CacheVariable->Volatile) {\r
+ Variable = CacheVariable;\r
+ } else {\r
+ //\r
+ // Update/Delete existing NV variable.\r
+ // CacheVariable points to the variable in the memory copy of Flash area\r
+ // Now let Variable points to the same variable in Flash area.\r
+ //\r
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
+ Variable = &NvVariable; \r
+ Variable->StartPtr = GetStartPointer (VariableStoreHeader);\r
+ Variable->EndPtr = GetEndPointer (VariableStoreHeader);\r
+ Variable->CurrPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->CurrPtr - (UINTN)CacheVariable->StartPtr));\r
+ Variable->Volatile = FALSE;\r
+ } \r
+\r
+ Fvb = mVariableModuleGlobal->FvbInstance;\r
+ Reclaimed = FALSE;\r
\r
if (Variable->CurrPtr != NULL) {\r
//\r
- // Update/Delete existing variable\r
+ // Update/Delete existing variable.\r
//\r
- Volatile = Variable->Volatile;\r
- \r
- if (EfiAtRuntime ()) { \r
+ if (AtRuntime ()) { \r
//\r
- // If EfiAtRuntime and the variable is Volatile and Runtime Access, \r
+ // If AtRuntime 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
goto Done;\r
}\r
//\r
- // Only variable have NV attribute can be updated/deleted in Runtime\r
+ // Only variable that have NV attributes 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
+ // causes it to be deleted.\r
//\r
if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) { \r
State = Variable->CurrPtr->State;\r
&State\r
); \r
if (!EFI_ERROR (Status)) {\r
- UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, FALSE, TRUE, FALSE);\r
- UpdateVariableCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r
+ UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, FALSE, TRUE, FALSE);\r
+ if (!Variable->Volatile) {\r
+ CacheVariable->CurrPtr->State = State;\r
+ }\r
}\r
goto Done; \r
}\r
//\r
- // If the variable is marked valid and the same data has been passed in\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 (DataSizeOfVariable (Variable->CurrPtr) == DataSize &&\r
(CompareMem (Data, GetVariableDataPtr (Variable->CurrPtr), DataSize) == 0)) {\r
\r
- UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r
+ UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);\r
Status = EFI_SUCCESS;\r
goto Done;\r
} else if ((Variable->CurrPtr->State == VAR_ADDED) ||\r
(Variable->CurrPtr->State == (VAR_ADDED & VAR_IN_DELETED_TRANSITION))) {\r
\r
//\r
- // Mark the old variable as in delete transition\r
+ // Mark the old variable as in delete transition.\r
//\r
State = Variable->CurrPtr->State;\r
State &= VAR_IN_DELETED_TRANSITION;\r
if (EFI_ERROR (Status)) {\r
goto Done; \r
} \r
+ if (!Variable->Volatile) {\r
+ CacheVariable->CurrPtr->State = State;\r
+ }\r
} \r
} else {\r
//\r
- // Not found existing variable. Create a new variable\r
+ // Not 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
+ // Setting a data variable with zero DataSize or no access 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
}\r
\r
//\r
- // Only variable have NV|RT attribute can be created in Runtime\r
+ // Only variable have NV|RT attribute can be created in Runtime.\r
//\r
- if (EfiAtRuntime () &&\r
+ if (AtRuntime () &&\r
(((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r
Status = EFI_INVALID_PARAMETER;\r
goto Done;\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
// Tricky part: Use scratch data area at the end of volatile variable store\r
// as a temporary storage.\r
//\r
// NextVariable->State = VAR_ADDED;\r
//\r
- NextVariable->Reserved = 0;\r
- VarNameOffset = sizeof (VARIABLE_HEADER);\r
- VarNameSize = StrSize (VariableName);\r
+ NextVariable->Reserved = 0;\r
+ VarNameOffset = sizeof (VARIABLE_HEADER);\r
+ VarNameSize = StrSize (VariableName);\r
CopyMem (\r
(UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r
VariableName,\r
//\r
// There will be pad bytes after Data, the NextVariable->NameSize and\r
// NextVariable->DataSize should not include pad size so that variable\r
- // service can get actual size in GetVariable\r
+ // service can get actual size in GetVariable.\r
//\r
NextVariable->NameSize = (UINT32)VarNameSize;\r
NextVariable->DataSize = (UINT32)DataSize;\r
VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r
if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
//\r
- // Create a nonvolatile variable\r
+ // Create a nonvolatile variable.\r
//\r
Volatile = FALSE;\r
NonVolatileVarableStoreSize = ((VARIABLE_STORE_HEADER *)(UINTN)(mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase))->Size;\r
&& ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r
|| (((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0) \r
&& ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > NonVolatileVarableStoreSize - sizeof (VARIABLE_STORE_HEADER) - PcdGet32 (PcdHwErrStorageSize)))) {\r
- if (EfiAtRuntime ()) {\r
+ if (AtRuntime ()) {\r
Status = EFI_OUT_OF_RESOURCES;\r
goto Done;\r
}\r
//\r
- // Perform garbage collection & reclaim operation\r
+ // Perform garbage collection & reclaim operation.\r
//\r
Status = Reclaim (mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase, \r
&mVariableModuleGlobal->NonVolatileLastVariableOffset, FALSE, Variable->CurrPtr);\r
goto Done;\r
}\r
//\r
- // If still no enough space, return out of resources\r
+ // If still no enough space, return out of resources.\r
//\r
if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) \r
&& ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r
Reclaimed = TRUE;\r
}\r
//\r
- // Three steps\r
+ // Four steps\r
// 1. Write variable header\r
// 2. Set variable state to header valid \r
// 3. Write variable data\r
//\r
// Step 1:\r
//\r
+ CacheOffset = mVariableModuleGlobal->NonVolatileLastVariableOffset;\r
Status = UpdateVariableStore (\r
&mVariableModuleGlobal->VariableGlobal,\r
FALSE,\r
FALSE,\r
TRUE,\r
Fvb,\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- sizeof (VARIABLE_HEADER),\r
- (UINT8 *) NextVariable\r
+ mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r
+ sizeof (UINT8),\r
+ &NextVariable->State\r
);\r
\r
if (EFI_ERROR (Status)) {\r
FALSE,\r
TRUE,\r
Fvb,\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- sizeof (VARIABLE_HEADER),\r
- (UINT8 *) NextVariable\r
+ mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r
+ sizeof (UINT8),\r
+ &NextVariable->State\r
);\r
\r
if (EFI_ERROR (Status)) {\r
} else {\r
mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);\r
}\r
+ //\r
+ // update the memory copy of Flash region.\r
+ //\r
+ CopyMem ((UINT8 *)mNvVariableCache + CacheOffset, (UINT8 *)NextVariable, VarSize);\r
} else {\r
//\r
- // Create a volatile variable\r
+ // Create a volatile variable.\r
// \r
Volatile = TRUE;\r
\r
if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r
((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size) {\r
//\r
- // Perform garbage collection & reclaim operation\r
+ // Perform garbage collection & reclaim operation.\r
//\r
Status = Reclaim (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase, \r
&mVariableModuleGlobal->VolatileLastVariableOffset, TRUE, Variable->CurrPtr);\r
goto Done;\r
}\r
//\r
- // If still no enough space, return out of resources\r
+ // If still no enough space, return out of resources.\r
//\r
if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r
((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size\r
}\r
\r
//\r
- // Mark the old variable as deleted\r
+ // Mark the old variable as deleted.\r
//\r
if (!Reclaimed && !EFI_ERROR (Status) && Variable->CurrPtr != NULL) {\r
State = Variable->CurrPtr->State;\r
sizeof (UINT8),\r
&State\r
);\r
+ if (!EFI_ERROR (Status) && !Variable->Volatile) { \r
+ CacheVariable->CurrPtr->State = State;\r
+ }\r
}\r
\r
if (!EFI_ERROR (Status)) {\r
UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r
- UpdateVariableCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r
}\r
\r
Done:\r
data, this value contains the required size.\r
@param Data Data pointer.\r
\r
- @return EFI_INVALID_PARAMETER Invalid parameter\r
- @return EFI_SUCCESS Find the specified variable\r
- @return EFI_NOT_FOUND Not found\r
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result\r
+ @return EFI_INVALID_PARAMETER Invalid parameter.\r
+ @return EFI_SUCCESS Find the specified variable.\r
+ @return EFI_NOT_FOUND Not found.\r
+ @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
-RuntimeServiceGetVariable (\r
+VariableServiceGetVariable (\r
IN CHAR16 *VariableName,\r
IN EFI_GUID *VendorGuid,\r
OUT UINT32 *Attributes OPTIONAL,\r
}\r
\r
AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- //\r
- // Find existing variable\r
- //\r
- Status = FindVariableInCache (VariableName, VendorGuid, Attributes, DataSize, Data);\r
- if ((Status == EFI_BUFFER_TOO_SMALL) || (Status == EFI_SUCCESS)){\r
- // Hit in the Cache\r
- UpdateVariableInfo (VariableName, VendorGuid, FALSE, TRUE, FALSE, FALSE, TRUE);\r
- goto Done;\r
- }\r
\r
Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);\r
if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
\r
*DataSize = VarDataSize;\r
UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r
- UpdateVariableCache (VariableName, VendorGuid, Variable.CurrPtr->Attributes, VarDataSize, Data);\r
\r
Status = EFI_SUCCESS;\r
goto Done;\r
\r
This code Finds the Next available variable.\r
\r
- @param VariableNameSize Size of the variable name\r
- @param VariableName Pointer to variable name\r
- @param VendorGuid Variable Vendor Guid\r
+ @param VariableNameSize Size of the variable name.\r
+ @param VariableName Pointer to variable name.\r
+ @param VendorGuid Variable Vendor Guid.\r
\r
- @return EFI_INVALID_PARAMETER Invalid parameter\r
- @return EFI_SUCCESS Find the specified variable\r
- @return EFI_NOT_FOUND Not found\r
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result\r
+ @return EFI_INVALID_PARAMETER Invalid parameter.\r
+ @return EFI_SUCCESS Find the specified variable.\r
+ @return EFI_NOT_FOUND Not found.\r
+ @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
-RuntimeServiceGetNextVariableName (\r
+VariableServiceGetNextVariableName (\r
IN OUT UINTN *VariableNameSize,\r
IN OUT CHAR16 *VariableName,\r
IN OUT EFI_GUID *VendorGuid\r
\r
if (VariableName[0] != 0) {\r
//\r
- // If variable name is not NULL, get next variable\r
+ // If variable name is not NULL, get next variable.\r
//\r
Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
}\r
while (TRUE) {\r
//\r
// If both volatile and non-volatile variable store are parsed,\r
- // return not found\r
+ // return not found.\r
//\r
if (Variable.CurrPtr >= Variable.EndPtr || Variable.CurrPtr == NULL) {\r
Variable.Volatile = (BOOLEAN) (Variable.Volatile ^ ((BOOLEAN) 0x1));\r
// Variable is found\r
//\r
if (IsValidVariableHeader (Variable.CurrPtr) && Variable.CurrPtr->State == VAR_ADDED) {\r
- if ((EfiAtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) == 0) {\r
+ if ((AtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) == 0) {\r
VarNameSize = NameSizeOfVariable (Variable.CurrPtr);\r
ASSERT (VarNameSize != 0);\r
\r
\r
This code sets variable in storage blocks (Volatile or Non-Volatile).\r
\r
- @param VariableName Name of Variable to be found\r
- @param VendorGuid Variable vendor GUID\r
+ @param VariableName Name of Variable to be found.\r
+ @param VendorGuid Variable vendor GUID.\r
@param Attributes Attribute value of the variable found\r
@param DataSize Size of Data found. If size is less than the\r
data, this value contains the required size.\r
- @param Data Data pointer\r
+ @param Data Data pointer.\r
\r
- @return EFI_INVALID_PARAMETER Invalid parameter\r
- @return EFI_SUCCESS Set successfully\r
- @return EFI_OUT_OF_RESOURCES Resource not enough to set variable\r
- @return EFI_NOT_FOUND Not found\r
- @return EFI_WRITE_PROTECTED Variable is read-only\r
+ @return EFI_INVALID_PARAMETER Invalid parameter.\r
+ @return EFI_SUCCESS Set successfully.\r
+ @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r
+ @return EFI_NOT_FOUND Not found.\r
+ @return EFI_WRITE_PROTECTED Variable is read-only.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
-RuntimeServiceSetVariable (\r
+VariableServiceSetVariable (\r
IN CHAR16 *VariableName,\r
IN EFI_GUID *VendorGuid,\r
IN UINT32 Attributes,\r
EFI_PHYSICAL_ADDRESS Point;\r
\r
//\r
- // Check input parameters\r
+ // Check input parameters.\r
//\r
if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
return EFI_INVALID_PARAMETER;\r
- }\r
+ } \r
\r
if (DataSize != 0 && Data == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
//\r
- // Make sure if runtime bit is set, boot service bit is set also\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
return EFI_INVALID_PARAMETER;\r
}\r
//\r
- // According to UEFI spec, HARDWARE_ERROR_RECORD variable name convention should be L"HwErrRecXXXX"\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
AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
\r
//\r
- // Consider reentrant in MCA/INIT/NMI. It needs be reupdated;\r
+ // Consider reentrant in MCA/INIT/NMI. It needs be reupdated.\r
//\r
if (1 < InterlockedIncrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState)) {\r
- Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;;\r
+ Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r
//\r
- // Parse non-volatile variable data and get last variable offset\r
+ // Parse non-volatile variable data and get last variable offset.\r
//\r
NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point);\r
while ((NextVariable < GetEndPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point)) \r
}\r
\r
//\r
- // Check whether the input variable is already existed\r
+ // Check whether the input variable is already existed.\r
//\r
FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal);\r
\r
//\r
- // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang\r
+ // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang.\r
//\r
AutoUpdateLangVariable (VariableName, Data, DataSize);\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
-RuntimeServiceQueryVariableInfo (\r
+VariableServiceQueryVariableInfo (\r
IN UINT32 Attributes,\r
OUT UINT64 *MaximumVariableStorageSize,\r
OUT UINT64 *RemainingVariableStorageSize,\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
+ } else if (AtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r
//\r
// Make sure RT Attribute is set if we are in Runtime phase.\r
//\r
//\r
// Query is Non-Volatile related.\r
//\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
+ VariableStoreHeader = mNvVariableCache;\r
}\r
\r
//\r
NextVariable = GetNextVariablePtr (Variable);\r
VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r
\r
- if (EfiAtRuntime ()) {\r
+ if (AtRuntime ()) {\r
//\r
- // we don't take the state of the variables in mind\r
+ // We don't take the state of the variables in mind\r
// when calculating RemainingVariableStorageSize,\r
// since the space occupied by variables not marked with\r
// VAR_ADDED is not allowed to be reclaimed in Runtime.\r
//\r
- if ((NextVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
+ if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
HwErrVariableTotalSize += VariableSize;\r
} else {\r
CommonVariableTotalSize += VariableSize;\r
}\r
} else {\r
//\r
- // Only care about Variables with State VAR_ADDED,because\r
+ // Only care about Variables with State VAR_ADDED, because\r
// the space not marked as VAR_ADDED is reclaimable now.\r
//\r
if (Variable->State == VAR_ADDED) {\r
- if ((NextVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\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
+ // Go to the next one.\r
//\r
Variable = NextVariable;\r
}\r
\r
\r
/**\r
- Notification function of EVT_GROUP_READY_TO_BOOT event group.\r
-\r
- This is a notification function registered on EVT_GROUP_READY_TO_BOOT event group.\r
- When the Boot Manager is about to load and execute a boot option, it reclaims variable\r
- storage if free size is below the threshold.\r
-\r
- @param Event Event whose notification function is being invoked\r
- @param Context Pointer to the notification function's context\r
-\r
+ This function reclaims variable storage if free size is below the threshold.\r
+ \r
**/\r
VOID\r
-EFIAPI\r
ReclaimForOS(\r
- EFI_EVENT Event,\r
- VOID *Context\r
+ VOID\r
)\r
{\r
EFI_STATUS Status;\r
}\r
}\r
\r
+\r
/**\r
- Initializes variable store area for non-volatile and volatile variable.\r
+ Initializes variable write service after FVB was ready.\r
+\r
+ @retval EFI_SUCCESS Function successfully executed.\r
+ @retval Others Fail to initialize the variable service.\r
+\r
+**/\r
+EFI_STATUS\r
+VariableWriteServiceInitialize (\r
+ VOID\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+ UINTN Index;\r
+ UINT8 Data;\r
+ EFI_PHYSICAL_ADDRESS VariableStoreBase;\r
+ UINT64 VariableStoreLength;\r
+\r
+ VariableStoreBase = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r
+ VariableStoreLength = VariableStoreHeader->Size;\r
+ \r
+ //\r
+ // Check if the free area is really free.\r
+ //\r
+ for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreLength; Index++) {\r
+ Data = ((UINT8 *) mNvVariableCache)[Index];\r
+ if (Data != 0xff) {\r
+ //\r
+ // There must be something wrong in variable store, do reclaim operation.\r
+ //\r
+ Status = Reclaim (\r
+ mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
+ FALSE,\r
+ NULL\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ break;\r
+ }\r
+ }\r
\r
- @param FvbProtocol Pointer to an instance of EFI Firmware Volume Block Protocol.\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ Initializes variable store area for non-volatile and volatile variable.\r
\r
@retval EFI_SUCCESS Function successfully executed.\r
@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
**/\r
EFI_STATUS\r
VariableCommonInitialize (\r
- IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvbProtocol\r
+ VOID\r
)\r
{\r
EFI_STATUS Status;\r
VARIABLE_STORE_HEADER *VariableStoreHeader;\r
VARIABLE_HEADER *NextVariable;\r
EFI_PHYSICAL_ADDRESS TempVariableStoreHeader;\r
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;\r
- EFI_PHYSICAL_ADDRESS BaseAddress;\r
- UINT64 Length;\r
- UINTN Index;\r
- UINT8 Data;\r
EFI_PHYSICAL_ADDRESS VariableStoreBase;\r
UINT64 VariableStoreLength;\r
- EFI_EVENT ReadyToBootEvent;\r
UINTN ScratchSize;\r
UINTN VariableSize;\r
\r
- Status = EFI_SUCCESS;\r
//\r
// Allocate runtime memory for variable driver global structure.\r
//\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
- EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r
+ InitializeLock (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r
\r
//\r
// Note that in EdkII variable driver implementation, Hardware Error Record type variable\r
SetMem (VolatileVariableStore, PcdGet32 (PcdVariableStoreSize) + ScratchSize, 0xff);\r
\r
//\r
- // Variable Specific Data\r
+ // Initialize Variable Specific Data.\r
//\r
mVariableModuleGlobal->VariableGlobal.VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r
mVariableModuleGlobal->VolatileLastVariableOffset = (UINTN) GetStartPointer (VolatileVariableStore) - (UINTN) VolatileVariableStore;\r
- mVariableModuleGlobal->FvbInstance = FvbProtocol;\r
+ mVariableModuleGlobal->FvbInstance = NULL;\r
\r
CopyGuid (&VolatileVariableStore->Signature, &gEfiVariableGuid);\r
- VolatileVariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r
- VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r
- VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r
- VolatileVariableStore->Reserved = 0;\r
- VolatileVariableStore->Reserved1 = 0;\r
+ VolatileVariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r
+ VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r
+ VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r
+ VolatileVariableStore->Reserved = 0;\r
+ VolatileVariableStore->Reserved1 = 0;\r
\r
//\r
- // Get non volatile varaible store\r
+ // Get non-volatile variable store.\r
//\r
\r
TempVariableStoreHeader = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r
if (TempVariableStoreHeader == 0) {\r
TempVariableStoreHeader = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r
}\r
- \r
- VariableStoreBase = TempVariableStoreHeader + \\r
+ VariableStoreBase = TempVariableStoreHeader + \\r
+ (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r
+ VariableStoreLength = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize) - \\r
(((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r
- VariableStoreLength = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize) - \\r
- (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);\r
- //\r
- // Mark the variable storage region of the FLASH as RUNTIME\r
- //\r
- BaseAddress = VariableStoreBase & (~EFI_PAGE_MASK);\r
- Length = VariableStoreLength + (VariableStoreBase - BaseAddress);\r
- Length = (Length + EFI_PAGE_SIZE - 1) & (~EFI_PAGE_MASK);\r
-\r
- Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdDescriptor);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
\r
- Status = gDS->SetMemorySpaceAttributes (\r
- BaseAddress,\r
- Length,\r
- GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME\r
- );\r
- if (EFI_ERROR (Status)) {\r
+ mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r
+ if (GetVariableStoreStatus (VariableStoreHeader) != EfiValid) {\r
+ Status = EFI_VOLUME_CORRUPTED;\r
+ DEBUG((EFI_D_INFO, "Variable Store header is corrupted\n"));\r
goto Done;\r
- }\r
+ } \r
+ ASSERT(VariableStoreHeader->Size == VariableStoreLength);\r
+ \r
//\r
- // Get address of non volatile variable store base\r
+ // Parse non-volatile variable data and get last variable offset.\r
//\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r
- if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r
- if (~VariableStoreHeader->Size == 0) {\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE,\r
- FALSE,\r
- mVariableModuleGlobal->FvbInstance,\r
- (UINTN) &VariableStoreHeader->Size,\r
- sizeof (UINT32),\r
- (UINT8 *) &VariableStoreLength\r
- );\r
- //\r
- // As Variables are stored in NV storage, which are slow devices,such as flash.\r
- // Variable operation may skip checking variable program result to improve performance,\r
- // We can assume Variable program is OK through some check point.\r
- // Variable Store Size Setting should be the first Variable write operation,\r
- // We can assume all Read/Write is OK if we can set Variable store size successfully.\r
- // If write fail, we will assert here\r
- //\r
- ASSERT(VariableStoreHeader->Size == VariableStoreLength);\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- }\r
-\r
- //\r
- // Parse non-volatile variable data and get last variable offset\r
- //\r
- NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase);\r
- Status = EFI_SUCCESS;\r
-\r
- while (IsValidVariableHeader (NextVariable)) {\r
- VariableSize = NextVariable->NameSize + NextVariable->DataSize + sizeof (VARIABLE_HEADER);\r
- if ((NextVariable->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VariableSize);\r
- } else {\r
- mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VariableSize);\r
- }\r
-\r
- NextVariable = GetNextVariablePtr (NextVariable);\r
+ NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase);\r
+ while (IsValidVariableHeader (NextVariable)) {\r
+ VariableSize = NextVariable->NameSize + NextVariable->DataSize + sizeof (VARIABLE_HEADER);\r
+ if ((NextVariable->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
+ mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VariableSize);\r
+ } else {\r
+ mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VariableSize);\r
}\r
\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) VariableStoreBase;\r
-\r
- //\r
- // Check if the free area is really free.\r
- //\r
- for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {\r
- Data = ((UINT8 *) (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase)[Index];\r
- if (Data != 0xff) {\r
- //\r
- // There must be something wrong in variable store, do reclaim operation.\r
- //\r
- Status = Reclaim (\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
- &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- FALSE,\r
- NULL\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- break;\r
- }\r
- }\r
+ NextVariable = GetNextVariablePtr (NextVariable);\r
+ }\r
\r
- //\r
- // Register the event handling function to reclaim variable for OS usage.\r
- //\r
- Status = EfiCreateEventReadyToBootEx (\r
- TPL_NOTIFY, \r
- ReclaimForOS, \r
- NULL, \r
- &ReadyToBootEvent\r
- );\r
- } else {\r
- Status = EFI_VOLUME_CORRUPTED;\r
- DEBUG((EFI_D_INFO, "Variable Store header is corrupted\n"));\r
+ mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) VariableStoreBase;\r
+ \r
+ //\r
+ // Allocate runtime memory used for a memory copy of the FLASH region.\r
+ // Keep the memory and the FLASH in sync as updates occur\r
+ //\r
+ mNvVariableCache = AllocateRuntimeZeroPool ((UINTN)VariableStoreLength);\r
+ if (mNvVariableCache == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
}\r
+ CopyMem (mNvVariableCache, (CHAR8 *)(UINTN)VariableStoreBase, (UINTN)VariableStoreLength);\r
+ Status = EFI_SUCCESS;\r
\r
Done:\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
\r
-/**\r
- Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE\r
-\r
- This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
- It convers pointer to new virtual address.\r
-\r
- @param Event Event whose notification function is being invoked\r
- @param Context Pointer to the notification function's context\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-VariableClassAddressChangeEvent (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetBlockSize);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetPhysicalAddress);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetAttributes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->SetAttributes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->Read);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->Write);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->EraseBlocks);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLangCodes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->LangCodes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLang);\r
- EfiConvertPointer (\r
- 0x0,\r
- (VOID **) &mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase\r
- );\r
- EfiConvertPointer (\r
- 0x0,\r
- (VOID **) &mVariableModuleGlobal->VariableGlobal.VolatileVariableBase\r
- );\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);\r
-}\r
\r
/**\r
- Firmware Volume Block Protocol notification event handler.\r
+ Get the proper fvb handle and/or fvb protocol by the given Flash address.\r
\r
- Discover NV Variable Store and install Variable Arch Protocol.\r
+ @param[in] Address The Flash address.\r
+ @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r
+ @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r
\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
**/\r
-VOID\r
-EFIAPI\r
-FvbNotificationEvent (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
+EFI_STATUS\r
+GetFvbInfoByAddress (\r
+ IN EFI_PHYSICAL_ADDRESS Address,\r
+ OUT EFI_HANDLE *FvbHandle OPTIONAL,\r
+ OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_HANDLE *HandleBuffer;\r
- UINTN HandleCount;\r
- UINTN Index;\r
- EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
- EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
- EFI_FVB_ATTRIBUTES_2 Attributes;\r
- EFI_SYSTEM_TABLE *SystemTable;\r
- EFI_PHYSICAL_ADDRESS NvStorageVariableBase;\r
-\r
- SystemTable = (EFI_SYSTEM_TABLE *)Context;\r
- Fvb = NULL;\r
- \r
+ EFI_STATUS Status;\r
+ EFI_HANDLE *HandleBuffer;\r
+ UINTN HandleCount;\r
+ UINTN Index;\r
+ EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r
+ EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
+ EFI_FVB_ATTRIBUTES_2 Attributes;\r
+ \r
//\r
- // Locate all handles of Fvb protocol\r
+ // Get all FVB handles.\r
//\r
- Status = gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- NULL,\r
- &HandleCount,\r
- &HandleBuffer\r
- );\r
+ Status = GetFvbCountAndBuffer (&HandleCount, &HandleBuffer);\r
if (EFI_ERROR (Status)) {\r
- return ;\r
+ return EFI_NOT_FOUND;\r
}\r
- \r
+\r
//\r
- // Get the FVB to access variable store\r
+ // Get the FVB to access variable store.\r
//\r
+ Fvb = NULL;\r
for (Index = 0; Index < HandleCount; Index += 1, Status = EFI_NOT_FOUND, Fvb = NULL) {\r
- Status = gBS->HandleProtocol (\r
- HandleBuffer[Index],\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- (VOID **) &Fvb\r
- );\r
+ Status = GetFvbByHandle (HandleBuffer[Index], &Fvb);\r
if (EFI_ERROR (Status)) {\r
Status = EFI_NOT_FOUND;\r
break;\r
if (EFI_ERROR (Status) || ((Attributes & EFI_FVB2_WRITE_STATUS) == 0)) {\r
continue; \r
}\r
+ \r
//\r
- // Compare the address and select the right one\r
+ // Compare the address and select the right one.\r
//\r
Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r
if (EFI_ERROR (Status)) {\r
}\r
\r
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r
- NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r
- if (NvStorageVariableBase == 0) {\r
- NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r
- }\r
- \r
- if ((NvStorageVariableBase >= FvbBaseAddress) && (NvStorageVariableBase < (FvbBaseAddress + FwVolHeader->FvLength))) {\r
- Status = EFI_SUCCESS;\r
+ if ((Address >= FvbBaseAddress) && (Address < (FvbBaseAddress + FwVolHeader->FvLength))) {\r
+ if (FvbHandle != NULL) {\r
+ *FvbHandle = HandleBuffer[Index];\r
+ }\r
+ if (FvbProtocol != NULL) {\r
+ *FvbProtocol = Fvb;\r
+ }\r
+ Status = EFI_SUCCESS;\r
break;\r
}\r
}\r
-\r
FreePool (HandleBuffer);\r
- if (!EFI_ERROR (Status) && Fvb != NULL) {\r
- //\r
- // Close the notify event to avoid install gEfiVariableArchProtocolGuid & gEfiVariableWriteArchProtocolGuid again.\r
- //\r
- Status = gBS->CloseEvent (Event); \r
- ASSERT_EFI_ERROR (Status);\r
\r
- Status = VariableCommonInitialize (Fvb);\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- SystemTable->RuntimeServices->GetVariable = RuntimeServiceGetVariable;\r
- SystemTable->RuntimeServices->GetNextVariableName = RuntimeServiceGetNextVariableName;\r
- SystemTable->RuntimeServices->SetVariable = RuntimeServiceSetVariable;\r
- SystemTable->RuntimeServices->QueryVariableInfo = RuntimeServiceQueryVariableInfo;\r
- \r
- //\r
- // Now install the Variable Runtime Architectural Protocol on a new handle\r
- //\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mHandle,\r
- &gEfiVariableArchProtocolGuid, NULL,\r
- &gEfiVariableWriteArchProtocolGuid, NULL,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- Status = gBS->CreateEventEx (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_NOTIFY,\r
- VariableClassAddressChangeEvent,\r
- NULL,\r
- &gEfiEventVirtualAddressChangeGuid,\r
- &mVirtualAddressChangeEvent\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
+ if (Fvb == NULL) {\r
+ Status = EFI_NOT_FOUND;\r
}\r
-\r
-}\r
-\r
-/**\r
- Variable Driver main entry point. The Variable driver places the 4 EFI\r
- runtime services in the EFI System Table and installs arch protocols \r
- for variable read and write services being availible. It also registers\r
- notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
- @param[in] SystemTable A pointer to the EFI System Table.\r
\r
- @retval EFI_SUCCESS Variable service successfully initialized.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- //\r
- // Register FvbNotificationEvent () notify function.\r
- // \r
- EfiCreateProtocolNotifyEvent (\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- TPL_CALLBACK,\r
- FvbNotificationEvent,\r
- (VOID *)SystemTable,\r
- &mFvbRegistration\r
- );\r
-\r
- return EFI_SUCCESS;\r
+ return Status; \r
}\r
\r
projects / mirror_edk2.git / blobdiff