/*++\r
\r
-Copyright (c) 2006, Intel Corporation \r
+Copyright (c) 2006 - 2007, Intel Corporation \r
All rights reserved. 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
//\r
ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
\r
-UINT32\r
-EFIAPI\r
-ArrayLength (\r
- IN CHAR16 *String\r
+//\r
+// This is a temperary function which will be removed \r
+// when EfiAcquireLock in UefiLib can handle the\r
+// the call in UEFI Runtimer driver in RT phase.\r
+//\r
+STATIC\r
+VOID\r
+AcquireLockOnlyAtBootTime (\r
+ IN EFI_LOCK *Lock\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Determine the length of null terminated char16 array.\r
-\r
-Arguments:\r
-\r
- String Null-terminated CHAR16 array pointer.\r
-\r
-Returns:\r
-\r
- UINT32 Number of bytes in the string, including the double NULL at the end;\r
-\r
---*/\r
{\r
- UINT32 Count;\r
-\r
- if (NULL == String) {\r
- return 0;\r
+ if (!EfiAtRuntime ()) {\r
+ EfiAcquireLock (Lock);\r
}\r
+}\r
\r
- Count = 0;\r
-\r
- while (0 != String[Count]) {\r
- Count++;\r
+//\r
+// This is a temperary function which will be removed \r
+// when EfiAcquireLock in UefiLib can handle the\r
+// the call in UEFI Runtimer driver in RT phase.\r
+//\r
+STATIC\r
+VOID\r
+ReleaseLockOnlyAtBootTime (\r
+ IN EFI_LOCK *Lock\r
+ )\r
+{\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (Lock);\r
}\r
-\r
- return (Count * 2) + 2;\r
}\r
\r
+STATIC\r
BOOLEAN\r
EFIAPI\r
IsValidVariableHeader (\r
return TRUE;\r
}\r
\r
+STATIC\r
EFI_STATUS\r
EFIAPI\r
UpdateVariableStore (\r
return EFI_SUCCESS;\r
}\r
\r
+STATIC\r
VARIABLE_STORE_STATUS\r
EFIAPI\r
GetVariableStoreStatus (\r
}\r
}\r
\r
+STATIC\r
UINT8 *\r
EFIAPI\r
GetVariableDataPtr (\r
return (UINT8 *) ((UINTN) GET_VARIABLE_NAME_PTR (Variable) + Variable->NameSize + GET_PAD_SIZE (Variable->NameSize));\r
}\r
\r
+STATIC\r
VARIABLE_HEADER *\r
EFIAPI\r
GetNextVariablePtr (\r
return (VARIABLE_HEADER *) ((UINTN) GetVariableDataPtr (Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));\r
}\r
\r
+STATIC\r
VARIABLE_HEADER *\r
EFIAPI\r
GetEndPointer (\r
return (VARIABLE_HEADER *) ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r
}\r
\r
+STATIC\r
EFI_STATUS\r
EFIAPI\r
Reclaim (\r
return Status;\r
}\r
\r
+STATIC\r
EFI_STATUS\r
EFIAPI\r
FindVariable (\r
VARIABLE_STORE_HEADER *VariableStoreHeader[2];\r
UINTN Index;\r
\r
+ //\r
+ // We aquire the lock at the entry of FindVariable as GetVariable, GetNextVariableName\r
+ // SetVariable all call FindVariable at entry point. Please move "Aquire Lock" to\r
+ // the correct places if this assumption does not hold TRUE anymore.\r
+ //\r
+ AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);\r
+\r
//\r
// 0: Non-Volatile, 1: Volatile\r
//\r
return EFI_SUCCESS;\r
} else {\r
if (CompareGuid (VendorGuid, &Variable[Index]->VendorGuid)) {\r
- if (!CompareMem (VariableName, GET_VARIABLE_NAME_PTR (Variable[Index]), ArrayLength (VariableName))) {\r
+ if (!CompareMem (VariableName, GET_VARIABLE_NAME_PTR (Variable[Index]), Variable[Index]->NameSize)) {\r
PtrTrack->CurrPtr = Variable[Index];\r
PtrTrack->Volatile = (BOOLEAN) Index;\r
return EFI_SUCCESS;\r
Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
\r
if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
//\r
// Get data size\r
VarDataSize = Variable.CurrPtr->DataSize;\r
if (*DataSize >= VarDataSize) {\r
if (Data == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
}\r
\r
CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r
}\r
\r
*DataSize = VarDataSize;\r
- return EFI_SUCCESS;\r
+ Status = EFI_SUCCESS;\r
+ goto Done;\r
} else {\r
*DataSize = VarDataSize;\r
- return EFI_BUFFER_TOO_SMALL;\r
+ Status = EFI_BUFFER_TOO_SMALL;\r
+ goto Done;\r
}\r
+\r
+Done:\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return Status;\r
}\r
\r
EFI_STATUS\r
Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
\r
if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
\r
if (VariableName[0] != 0) {\r
Variable.StartPtr = (VARIABLE_HEADER *) ((UINTN) (Global->VolatileVariableBase + sizeof (VARIABLE_STORE_HEADER)));\r
Variable.EndPtr = (VARIABLE_HEADER *) GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase));\r
} else {\r
- return EFI_NOT_FOUND;\r
+ Status = EFI_NOT_FOUND;\r
+ goto Done;\r
}\r
\r
Variable.CurrPtr = Variable.StartPtr;\r
}\r
\r
*VariableNameSize = VarNameSize;\r
- return Status;\r
+ goto Done;\r
}\r
}\r
\r
Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
}\r
\r
- return EFI_NOT_FOUND;\r
+Done:\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return Status;\r
}\r
\r
EFI_STATUS\r
Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
\r
if (Status == EFI_INVALID_PARAMETER) {\r
- return Status;\r
- }\r
- //\r
- // The size of the VariableName, including the Unicode Null in bytes plus\r
- // the DataSize is limited to maximum size of MAX_VARIABLE_SIZE (1024) bytes.\r
- //\r
- else if (sizeof (VARIABLE_HEADER) + ArrayLength (VariableName) + DataSize > MAX_VARIABLE_SIZE) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Make sure if runtime bit is set, boot service bit is set also\r
- //\r
- else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS\r
- ) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Runtime but Attribute is not Runtime\r
- //\r
- else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_RUNTIME_ACCESS)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Cannot set volatile variable in Runtime\r
- //\r
- else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_NON_VOLATILE)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Setting a data variable with no access, or zero DataSize attributes\r
- // specified causes it to be deleted.\r
- //\r
- else if (DataSize == 0 || Attributes == 0) {\r
+ goto Done;\r
+ } else if (!EFI_ERROR (Status) && Variable.Volatile && 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
+ Status = EFI_WRITE_PROTECTED;\r
+ goto Done;\r
+ } else if (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > MAX_VARIABLE_SIZE) {\r
+ //\r
+ // The size of the VariableName, including the Unicode Null in bytes plus\r
+ // the DataSize is limited to maximum size of MAX_VARIABLE_SIZE (1024) bytes.\r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ } else if (Attributes == EFI_VARIABLE_NON_VOLATILE) {\r
+ //\r
+ // Make sure not only EFI_VARIABLE_NON_VOLATILE is set \r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == \r
+ EFI_VARIABLE_RUNTIME_ACCESS) {\r
+ //\r
+ // Make sure if runtime bit is set, boot service bit is set also\r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ } else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_RUNTIME_ACCESS)) {\r
+ //\r
+ // Runtime but Attribute is not Runtime\r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ } else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_NON_VOLATILE)) {\r
+ //\r
+ // Cannot set volatile variable in Runtime\r
+ //\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ } else if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r
+ //\r
+ // Setting a data variable with no access, or zero DataSize attributes\r
+ // specified causes it to be deleted.\r
+ //\r
if (!EFI_ERROR (Status)) {\r
State = Variable.CurrPtr->State;\r
State &= VAR_DELETED;\r
&State\r
);\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
\r
- return EFI_SUCCESS;\r
+ Status = EFI_SUCCESS;\r
+ goto Done;\r
}\r
\r
- return EFI_NOT_FOUND;\r
+ Status = EFI_NOT_FOUND;\r
+ goto Done;\r
} else {\r
if (!EFI_ERROR (Status)) {\r
//\r
if (Variable.CurrPtr->DataSize == DataSize &&\r
!CompareMem (Data, GetVariableDataPtr (Variable.CurrPtr), DataSize)\r
) {\r
- return EFI_SUCCESS;\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
&State\r
);\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
}\r
}\r
//\r
NextVariable->Reserved = 0;\r
VarNameOffset = sizeof (VARIABLE_HEADER);\r
- VarNameSize = ArrayLength (VariableName);\r
+ VarNameSize = StrSize (VariableName);\r
CopyMem (\r
(UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r
VariableName,\r
((VARIABLE_STORE_HEADER *) ((UINTN) (Global->NonVolatileVariableBase)))->Size\r
) {\r
if (EfiAtRuntime ()) {\r
- return EFI_OUT_OF_RESOURCES;\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
}\r
//\r
// Perform garbage collection & reclaim operation\r
//\r
Status = Reclaim (Global->NonVolatileVariableBase, NonVolatileOffset, FALSE);\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
//\r
// If still no enough space, return out of resources\r
if ((UINT32) (VarSize +*NonVolatileOffset) >\r
((VARIABLE_STORE_HEADER *) ((UINTN) (Global->NonVolatileVariableBase)))->Size\r
) {\r
- return EFI_OUT_OF_RESOURCES;\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
}\r
\r
Reclaimed = TRUE;\r
);\r
\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
//\r
// Step 2:\r
);\r
\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
//\r
// Step 3:\r
);\r
\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
\r
*NonVolatileOffset = *NonVolatileOffset + VarSize;\r
\r
} else {\r
if (EfiAtRuntime ()) {\r
- return EFI_INVALID_PARAMETER;\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
}\r
\r
if ((UINT32) (VarSize +*VolatileOffset) >\r
//\r
Status = Reclaim (Global->VolatileVariableBase, VolatileOffset, TRUE);\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
//\r
// If still no enough space, return out of resources\r
if ((UINT32) (VarSize +*VolatileOffset) >\r
((VARIABLE_STORE_HEADER *) ((UINTN) (Global->VolatileVariableBase)))->Size\r
) {\r
- return EFI_OUT_OF_RESOURCES;\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
}\r
\r
Reclaimed = TRUE;\r
);\r
\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
\r
*VolatileOffset = *VolatileOffset + VarSize;\r
);\r
\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
}\r
}\r
\r
- return EFI_SUCCESS;\r
+ Status = EFI_SUCCESS;\r
+Done:\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return Status;\r
}\r
\r
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)\r
VARIABLE_HEADER *NextVariable;\r
UINT64 VariableSize;\r
VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- \r
+\r
if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ AcquireLockOnlyAtBootTime(&Global->VariableServicesLock);\r
+ \r
if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
//\r
// Query is Volatile related.\r
Variable = NextVariable;\r
}\r
\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
return EFI_SUCCESS;\r
}\r
#endif\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+\r
+ EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, EFI_TPL_NOTIFY);\r
+ \r
//\r
// Allocate memory for volatile variable store\r
//\r
//\r
// Variable Specific Data\r
//\r
- mVariableModuleGlobal->VariableBase[Physical].VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r
+ mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r
mVariableModuleGlobal->VolatileLastVariableOffset = sizeof (VARIABLE_STORE_HEADER);\r
\r
VolatileVariableStore->Signature = VARIABLE_STORE_SIGNATURE;\r
//\r
// Get address of non volatile variable store base\r
//\r
- mVariableModuleGlobal->VariableBase[Physical].NonVolatileVariableBase = VariableStoreEntry.Base;\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase = VariableStoreEntry.Base;\r
\r
//\r
// Check Integrity\r
// Find the Correct Instance of the FV Block Service.\r
//\r
Instance = 0;\r
- CurrPtr = (CHAR8 *) ((UINTN) mVariableModuleGlobal->VariableBase[Physical].NonVolatileVariableBase);\r
+ CurrPtr = (CHAR8 *) ((UINTN) mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase);\r
while (EfiFvbGetPhysicalAddress (Instance, &FvVolHdr) == EFI_SUCCESS) {\r
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvVolHdr);\r
if (CurrPtr >= (CHAR8 *) FwVolHeader && CurrPtr < (((CHAR8 *) FwVolHeader) + FwVolHeader->FvLength)) {\r
if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r
if (~VariableStoreHeader->Size == 0) {\r
Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableBase[Physical],\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
FALSE,\r
FALSE,\r
mVariableModuleGlobal->FvbInstance,\r
}\r
}\r
\r
- mVariableModuleGlobal->VariableBase[Physical].NonVolatileVariableBase = (EFI_PHYSICAL_ADDRESS) ((UINTN) CurrPtr);\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase = (EFI_PHYSICAL_ADDRESS) ((UINTN) CurrPtr);\r
//\r
// Parse non-volatile variable data and get last variable offset\r
//\r
//\r
if ((((VARIABLE_STORE_HEADER *)((UINTN) CurrPtr))->Size - mVariableModuleGlobal->NonVolatileLastVariableOffset) < VARIABLE_RECLAIM_THRESHOLD) {\r
Status = Reclaim (\r
- mVariableModuleGlobal->VariableBase[Physical].NonVolatileVariableBase,\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase,\r
&mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
FALSE\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->VariableBase[Physical].NonVolatileVariableBase)[Index];\r
+ Data = ((UINT8 *) (UINTN) mVariableModuleGlobal->VariableGlobal[Physical].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->VariableBase[Physical].NonVolatileVariableBase,\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase,\r
&mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
FALSE\r
);\r
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