$(WORKSPACE)/MdeModulePkg/Core/RuntimeDxe/RuntimeDxe.inf\r
\r
$(WORKSPACE)/MdeModulePkg/Universal/WatchDogTimerDxe/WatchDogTimer.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/VariablePei/VariablePei.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/DebugPortDxe/DebugPortDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/PCD/Dxe/Pcd.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/PCD/Pei/Pcd.inf\r
$(WORKSPACE)/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouseDxe.inf\r
\r
+ $(WORKSPACE)/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf\r
+ $(WORKSPACE)/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf\r
+ $(WORKSPACE)/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf\r
+\r
[Components.Ia32]\r
$(WORKSPACE)/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/VariableRuntimeDxe/VariableRuntimeDxe.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/EmuVariableRuntimeDxe/EmuVariableRuntimeDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf\r
\r
[Components.X64]\r
$(WORKSPACE)/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/VariableRuntimeDxe/Variable.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/EmuVariableRuntimeDxe/EmuVariableRuntimeDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/EbcDxe/EbcDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/DebugSupportDxe/DebugSupport.inf\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ EmuVariable.c\r
+\r
+Abstract:\r
+\r
+Revision History\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
+//\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
+ if (!EfiAtRuntime ()) {\r
+ EfiAcquireLock (Lock);\r
+ }\r
+}\r
+\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
+\r
+STATIC\r
+UINT8 *\r
+EFIAPI\r
+GetVariableDataPtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the variable data.\r
+\r
+Arguments:\r
+\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+\r
+ UINT8* Pointer to Variable Data\r
+\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
+STATIC\r
+VARIABLE_HEADER *\r
+EFIAPI\r
+GetNextVariablePtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the next variable header.\r
+\r
+Arguments:\r
+\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+\r
+ VARIABLE_HEADER* Pointer to next variable header.\r
+\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 *) (GetVariableDataPtr (Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));\r
+\r
+ if (VarHeader->StartId != VARIABLE_DATA ||\r
+ (sizeof (VARIABLE_HEADER) + VarHeader->DataSize + VarHeader->NameSize) > MAX_VARIABLE_SIZE\r
+ ) {\r
+ return NULL;\r
+ }\r
+\r
+ return VarHeader;\r
+}\r
+\r
+STATIC\r
+VARIABLE_HEADER *\r
+EFIAPI\r
+GetEndPointer (\r
+ IN VARIABLE_STORE_HEADER *VolHeader\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the last variable memory pointer byte\r
+\r
+Arguments:\r
+\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+\r
+ VARIABLE_HEADER* Pointer to last unavailable Variable Header\r
+\r
+--*/\r
+{\r
+ //\r
+ // The end of variable store\r
+ //\r
+ return (VARIABLE_HEADER *) ((UINTN) VolHeader + VolHeader->Size);\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\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
+Routine Description:\r
+\r
+ This code finds variable in storage blocks (Volatile or Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ VariableName Name of the variable to be found\r
+ VendorGuid Vendor GUID to be found.\r
+ PtrTrack Variable Track Pointer structure that contains\r
+ Variable Information.\r
+ Contains the pointer of Variable header.\r
+ Global VARIABLE_GLOBAL pointer\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_HEADER *Variable[2];\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
+ 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 *) (VariableStoreHeader[0] + 1);\r
+ Variable[1] = (VARIABLE_HEADER *) (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 *) (VariableStoreHeader[Index] + 1);\r
+ PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);\r
+\r
+ while ((Variable[Index] != NULL) && (Variable[Index] <= GetEndPointer (VariableStoreHeader[Index]))) {\r
+ if (Variable[Index]->StartId == VARIABLE_DATA && Variable[Index]->State == VAR_ADDED) {\r
+ if (!(EfiAtRuntime () && !(Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS))) {\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)) {\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
+EFI_STATUS\r
+EFIAPI\r
+GetVariable (\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
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code finds variable in storage blocks (Volatile or Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ VariableName Name of Variable to be found\r
+ VendorGuid Variable vendor GUID\r
+ Attributes OPTIONAL Attribute value of the variable found\r
+ DataSize Size of Data found. If size is less than the\r
+ data, this value contains the required size.\r
+ Data Data pointer\r
+ Global Pointer to VARIABLE_GLOBAL structure\r
+ Instance Instance of the Firmware Volume.\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarDataSize;\r
+ EFI_STATUS Status;\r
+\r
+ if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r
+ return EFI_INVALID_PARAMETER;\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
+\r
+ CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r
+ if (Attributes != NULL) {\r
+ *Attributes = Variable.CurrPtr->Attributes;\r
+ }\r
+\r
+ *DataSize = VarDataSize;\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
+EFI_STATUS\r
+EFIAPI\r
+GetNextVariableName (\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VendorGuid,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code Finds the Next available variable\r
+\r
+Arguments:\r
+\r
+ VariableNameSize Size of the variable\r
+ VariableName Pointer to variable name\r
+ VendorGuid Variable Vendor Guid\r
+ Global VARIABLE_GLOBAL structure pointer.\r
+ Instance FV instance\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarNameSize;\r
+ EFI_STATUS Status;\r
+\r
+ if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
+\r
+ if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\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 *) ((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))) {\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
+EFI_STATUS\r
+EFIAPI\r
+SetVariable (\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
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code sets variable in storage blocks (Volatile or Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ VariableName Name of Variable to be found\r
+ VendorGuid Variable vendor GUID\r
+ Attributes Attribute value of the variable found\r
+ DataSize Size of Data found. If size is less than the\r
+ data, this value contains the required size.\r
+ Data Data pointer\r
+ Global Pointer to VARIABLE_GLOBAL structure\r
+ VolatileOffset The offset of last volatile variable\r
+ NonVolatileOffset The offset of last non-volatile variable\r
+ Instance Instance of the Firmware Volume.\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ EFI_STATUS Status;\r
+ VARIABLE_HEADER *NextVariable;\r
+ UINTN VarNameSize;\r
+ UINTN VarNameOffset;\r
+ UINTN VarDataOffset;\r
+ UINTN VarSize;\r
+\r
+ if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
+\r
+ if (Status == EFI_INVALID_PARAMETER) {\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_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS\r
+ ) {\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
+ Variable.CurrPtr->State &= VAR_DELETED;\r
+ Status = EFI_SUCCESS;\r
+ goto Done;\r
+ }\r
+\r
+ Status = EFI_NOT_FOUND;\r
+ goto Done;\r
+ } else {\r
+ if (!EFI_ERROR (Status)) {\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)\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
+ //\r
+ // Create a new variable and copy the data.\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) {\r
+ if ((UINT32) (VarSize +*NonVolatileOffset) >\r
+ ((VARIABLE_STORE_HEADER *) ((UINTN) (Global->NonVolatileVariableBase)))->Size\r
+ ) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
+ }\r
+\r
+ NextVariable = (VARIABLE_HEADER *) (UINT8 *) (*NonVolatileOffset + (UINTN) Global->NonVolatileVariableBase);\r
+ *NonVolatileOffset = *NonVolatileOffset + VarSize;\r
+ } else {\r
+ if (EfiAtRuntime ()) {\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ }\r
+\r
+ if ((UINT32) (VarSize +*VolatileOffset) >\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 *) (*VolatileOffset + (UINTN) Global->VolatileVariableBase);\r
+ *VolatileOffset = *VolatileOffset + 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 (!EFI_ERROR (Status)) {\r
+ Variable.CurrPtr->State &= VAR_DELETED;\r
+ }\r
+ }\r
+\r
+ Status = EFI_SUCCESS;\r
+Done:\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return Status;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+QueryVariableInfo (\r
+ IN UINT32 Attributes,\r
+ OUT UINT64 *MaximumVariableStorageSize,\r
+ OUT UINT64 *RemainingVariableStorageSize,\r
+ OUT UINT64 *MaximumVariableSize,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code returns information about the EFI variables.\r
+\r
+Arguments:\r
+\r
+ Attributes Attributes bitmask to specify the type of variables\r
+ on which to return information.\r
+ MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
+ for the EFI variables associated with the attributes specified.\r
+ RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
+ for the EFI variables associated with the attributes specified.\r
+ MaximumVariableSize Pointer to the maximum size of the individual EFI variables\r
+ associated with the attributes specified.\r
+ Global Pointer to VARIABLE_GLOBAL structure.\r
+ Instance Instance of the Firmware Volume.\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+ EFI_INVALID_PARAMETER - An invalid combination of attribute bits was supplied.\r
+ EFI_SUCCESS - Query successfully.\r
+ EFI_UNSUPPORTED - The attribute is not supported on this platform.\r
+\r
+--*/\r
+{\r
+ VARIABLE_HEADER *Variable;\r
+ VARIABLE_HEADER *NextVariable;\r
+ UINT64 VariableSize;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+\r
+ if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)) == 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)) {\r
+ //\r
+ // Make sure RT Attribute is set if we are in Runtime phase.\r
+ //\r
+ return EFI_INVALID_PARAMETER;\r
+ } else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_NON_VOLATILE)) {\r
+ //\r
+ // Cannot Query volatile variable in Runtime\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
+ //\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
+ *RemainingVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r
+\r
+ //\r
+ // Let *MaximumVariableSize be MAX_VARIABLE_SIZE\r
+ //\r
+ *MaximumVariableSize = MAX_VARIABLE_SIZE;\r
+\r
+ //\r
+ // Point to the starting address of the variables.\r
+ //\r
+ Variable = (VARIABLE_HEADER *) (VariableStoreHeader + 1);\r
+\r
+ //\r
+ // Now walk through the related variable store.\r
+ //\r
+ while (Variable < GetEndPointer (VariableStoreHeader)) {\r
+ if (Variable->StartId != VARIABLE_DATA) {\r
+ break;\r
+ }\r
+\r
+ NextVariable = (VARIABLE_HEADER *) (GetVariableDataPtr (Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));\r
+ VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r
+\r
+ if (Variable->State == VAR_ADDED) {\r
+ *RemainingVariableStorageSize -= VariableSize;\r
+ }\r
+\r
+ //\r
+ // Go to the next one.\r
+ //\r
+ Variable = NextVariable;\r
+ }\r
+\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+InitializeVariableStore (\r
+ OUT EFI_PHYSICAL_ADDRESS *VariableBase,\r
+ OUT UINTN *LastVariableOffset\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This function initializes variable store\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ VARIABLE_STORE_HEADER *VariableStore;\r
+\r
+ //\r
+ // Allocate memory for volatile variable store\r
+ //\r
+ VariableStore = (VARIABLE_STORE_HEADER *) AllocateRuntimePool (\r
+ VARIABLE_STORE_SIZE\r
+ );\r
+ if (NULL == VariableStore) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ SetMem (VariableStore, VARIABLE_STORE_SIZE, 0xff);\r
+\r
+ //\r
+ // Variable Specific Data\r
+ //\r
+ *VariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStore;\r
+ *LastVariableOffset = sizeof (VARIABLE_STORE_HEADER);\r
+\r
+ VariableStore->Signature = VARIABLE_STORE_SIGNATURE;\r
+ VariableStore->Size = VARIABLE_STORE_SIZE;\r
+ VariableStore->Format = VARIABLE_STORE_FORMATTED;\r
+ VariableStore->State = VARIABLE_STORE_HEALTHY;\r
+ VariableStore->Reserved = 0;\r
+ VariableStore->Reserved1 = 0;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VariableCommonInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This function does common initialization for variable services\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Allocate memory for mVariableModuleGlobal\r
+ //\r
+ mVariableModuleGlobal = (ESAL_VARIABLE_GLOBAL *) AllocateRuntimePool (\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 (\r
+ &mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase,\r
+ &mVariableModuleGlobal->VolatileLastVariableOffset\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ //\r
+ // Intialize non volatile variable store\r
+ //\r
+ Status = InitializeVariableStore (\r
+ &mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset\r
+ );\r
+\r
+ return Status;\r
+}\r
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>\r
+<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">\r
+ <MsaHeader>\r
+ <ModuleName>EmuVariable</ModuleName>\r
+ <ModuleType>DXE_RUNTIME_DRIVER</ModuleType>\r
+ <GuidValue>CBD2E4D5-7068-4FF5-B866-9822B4AD8D61</GuidValue>\r
+ <Version>1.0</Version>\r
+ <Abstract>Emulation Variable for EFI_RUNTIME_SERVICES.</Abstract>\r
+ <Description>This module provides three EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName</Description>\r
+ <Copyright>Copyright (c) 2006 - 2007, Intel Corporation</Copyright>\r
+ <License>All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.</License>\r
+ <Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>\r
+ </MsaHeader>\r
+ <ModuleDefinitions>\r
+ <SupportedArchitectures>IA32 X64 EBC</SupportedArchitectures>\r
+ <BinaryModule>false</BinaryModule>\r
+ <OutputFileBasename>EmuVariable</OutputFileBasename>\r
+ </ModuleDefinitions>\r
+ <LibraryClassDefinitions>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>BaseMemoryLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>MemoryAllocationLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>DebugLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiRuntimeLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiDriverEntryPoint</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiBootServicesTableLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>BaseLib</Keyword>\r
+ </LibraryClass>\r
+ </LibraryClassDefinitions>\r
+ <SourceFiles>\r
+ <Filename>Variable.h</Filename>\r
+ <Filename>EmuVariable.c</Filename>\r
+ <Filename>EmuVariable.dxs</Filename>\r
+ <Filename>InitVariable.c</Filename>\r
+ </SourceFiles>\r
+ <PackageDependencies>\r
+ <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>\r
+ <Package PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d"/>\r
+ </PackageDependencies>\r
+ <Protocols>\r
+ <Protocol Usage="ALWAYS_PRODUCED" SupArchList="IA32 X64">\r
+ <ProtocolCName>gEfiVariableWriteArchProtocolGuid</ProtocolCName>\r
+ </Protocol>\r
+ <Protocol Usage="ALWAYS_PRODUCED" SupArchList="IA32 X64">\r
+ <ProtocolCName>gEfiVariableArchProtocolGuid</ProtocolCName>\r
+ </Protocol>\r
+ </Protocols>\r
+ <Externs>\r
+ <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>\r
+ <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>\r
+ <Extern>\r
+ <ModuleEntryPoint>VariableServiceInitialize</ModuleEntryPoint>\r
+ </Extern>\r
+ </Externs>\r
+</ModuleSurfaceArea>
\ No newline at end of file
--- /dev/null
+#/** @file\r
+# Emulation Variable for EFI_RUNTIME_SERVICES.\r
+#\r
+# This module provides three EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName\r
+# Copyright (c) 2006 - 2007, Intel Corporation\r
+#\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
+# http://opensource.org/licenses/bsd-license.php\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
+\r
+################################################################################\r
+#\r
+# Defines Section - statements that will be processed to create a Makefile.\r
+#\r
+################################################################################\r
+[Defines]\r
+ INF_VERSION = 0x00010005\r
+ BASE_NAME = EmuVariableRuntimeDxe\r
+ FILE_GUID = CBD2E4D5-7068-4FF5-B866-9822B4AD8D61\r
+ MODULE_TYPE = DXE_RUNTIME_DRIVER\r
+ VERSION_STRING = 1.0\r
+ EDK_RELEASE_VERSION = 0x00020000\r
+ EFI_SPECIFICATION_VERSION = 0x00020000\r
+\r
+ ENTRY_POINT = VariableServiceInitialize\r
+\r
+#\r
+# The following information is for reference only and not required by the build tools.\r
+#\r
+# VALID_ARCHITECTURES = IA32 X64 EBC\r
+#\r
+\r
+################################################################################\r
+#\r
+# Sources Section - list of files that are required for the build to succeed.\r
+#\r
+################################################################################\r
+\r
+[Sources.common]\r
+ InitVariable.c\r
+ EmuVariable.c\r
+ Variable.h\r
+\r
+\r
+################################################################################\r
+#\r
+# Package Dependency Section - list of Package files that are required for\r
+# this module.\r
+#\r
+################################################################################\r
+\r
+[Packages]\r
+ MdePkg/MdePkg.dec\r
+ MdeModulePkg/MdeModulePkg.dec\r
+\r
+\r
+################################################################################\r
+#\r
+# Library Class Section - list of Library Classes that are required for\r
+# this module.\r
+#\r
+################################################################################\r
+\r
+[LibraryClasses]\r
+ BaseLib\r
+ UefiLib\r
+ UefiBootServicesTableLib\r
+ UefiDriverEntryPoint\r
+ UefiRuntimeLib\r
+ DebugLib\r
+ MemoryAllocationLib\r
+ BaseMemoryLib\r
+\r
+\r
+################################################################################\r
+#\r
+# Protocol C Name Section - list of Protocol and Protocol Notify C Names\r
+# that this module uses or produces.\r
+#\r
+################################################################################\r
+\r
+[Protocols.IA32]\r
+ gEfiVariableArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED\r
+ gEfiVariableWriteArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED\r
+\r
+[Protocols.X64]\r
+ gEfiVariableArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED\r
+ gEfiVariableWriteArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED\r
+\r
+\r
+################################################################################\r
+#\r
+# Dependency Expression Section - list of Dependency expressions that are required for\r
+# this module.\r
+#\r
+################################################################################\r
+\r
+[Depex]\r
+ TRUE\r
+\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ InitVariable.c\r
+\r
+Abstract:\r
+\r
+Revision History\r
+\r
+--*/\r
+\r
+#include "Variable.h"\r
+\r
+//\r
+// Don't use module globals after the SetVirtualAddress map is signaled\r
+//\r
+extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceGetVariable (\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
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return GetVariable (\r
+ VariableName,\r
+ VendorGuid,\r
+ Attributes OPTIONAL,\r
+ DataSize,\r
+ Data,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceGetNextVariableName (\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VendorGuid\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return GetNextVariableName (\r
+ VariableNameSize,\r
+ VariableName,\r
+ VendorGuid,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceSetVariable (\r
+ IN CHAR16 *VariableName,\r
+ IN EFI_GUID *VendorGuid,\r
+ IN UINT32 Attributes,\r
+ IN UINTN DataSize,\r
+ IN VOID *Data\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return SetVariable (\r
+ VariableName,\r
+ VendorGuid,\r
+ Attributes,\r
+ DataSize,\r
+ Data,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ &mVariableModuleGlobal->VolatileLastVariableOffset,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceQueryVariableInfo (\r
+ IN UINT32 Attributes,\r
+ OUT UINT64 *MaximumVariableStorageSize,\r
+ OUT UINT64 *RemainingVariableStorageSize,\r
+ OUT UINT64 *MaximumVariableSize\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return QueryVariableInfo (\r
+ Attributes,\r
+ MaximumVariableStorageSize,\r
+ RemainingVariableStorageSize,\r
+ MaximumVariableSize,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+VOID\r
+EFIAPI\r
+VariableClassAddressChangeEvent (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ EfiConvertPointer (\r
+ 0x0,\r
+ (VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase\r
+ );\r
+ EfiConvertPointer (\r
+ 0x0,\r
+ (VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase\r
+ );\r
+ EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VariableServiceInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ EFI_HANDLE NewHandle;\r
+ EFI_STATUS Status;\r
+\r
+ Status = VariableCommonInitialize (ImageHandle, SystemTable);\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
+ NewHandle = NULL;\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &NewHandle,\r
+ &gEfiVariableArchProtocolGuid,\r
+ NULL,\r
+ &gEfiVariableWriteArchProtocolGuid,\r
+ NULL,\r
+ NULL\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return EFI_SUCCESS;\r
+}\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ Variable.h\r
+\r
+Abstract:\r
+\r
+--*/\r
+\r
+#ifndef _VARIABLE_H\r
+#define _VARIABLE_H\r
+\r
+//\r
+// Statements that include other header files\r
+//\r
+//\r
+// The package level header files this module uses\r
+//\r
+#include <PiDxe.h>\r
+//\r
+// The protocols, PPI and GUID defintions for this module\r
+//\r
+#include <Protocol/VariableWrite.h>\r
+#include <Protocol/Variable.h>\r
+//\r
+// The Library classes this module consumes\r
+//\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/UefiRuntimeLib.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/UefiLib.h>\r
+#include <Library/BaseLib.h>\r
+\r
+//\r
+// BugBug: We need relcate the head file.\r
+//\r
+#include <Common/Variable.h>\r
+\r
+#define VARIABLE_STORE_SIZE (64 * 1024)\r
+#define SCRATCH_SIZE (4 * 1024)\r
+\r
+//\r
+// Define GET_PAD_SIZE to optimize compiler\r
+//\r
+#if ((ALIGNMENT == 0) || (ALIGNMENT == 1))\r
+#define GET_PAD_SIZE(a) (0)\r
+#else\r
+#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))\r
+#endif\r
+\r
+#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))\r
+\r
+typedef enum {\r
+ Physical,\r
+ Virtual\r
+} VARIABLE_POINTER_TYPE;\r
+\r
+typedef struct {\r
+ VARIABLE_HEADER *CurrPtr;\r
+ VARIABLE_HEADER *EndPtr;\r
+ VARIABLE_HEADER *StartPtr;\r
+ BOOLEAN Volatile;\r
+} VARIABLE_POINTER_TRACK;\r
+\r
+typedef struct {\r
+ EFI_PHYSICAL_ADDRESS VolatileVariableBase;\r
+ EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;\r
+ EFI_LOCK VariableServicesLock;\r
+} VARIABLE_GLOBAL;\r
+\r
+typedef struct {\r
+ VARIABLE_GLOBAL VariableGlobal[2];\r
+ UINTN VolatileLastVariableOffset;\r
+ UINTN NonVolatileLastVariableOffset;\r
+ UINT32 FvbInstance;\r
+} ESAL_VARIABLE_GLOBAL;\r
+\r
+extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
+\r
+//\r
+// Functions\r
+//\r
+EFI_STATUS\r
+EFIAPI\r
+VariableCommonInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VariableServiceInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+;\r
+\r
+VOID\r
+EFIAPI\r
+VariableClassAddressChangeEvent (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+GetVariable (\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
+ IN UINT32 Instance\r
+ )\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+GetNextVariableName (\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VendorGuid,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ )\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+SetVariable (\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
+ IN UINT32 Instance\r
+ )\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+QueryVariableInfo (\r
+ IN UINT32 Attributes,\r
+ OUT UINT64 *MaximumVariableStorageSize,\r
+ OUT UINT64 *RemainingVariableStorageSize,\r
+ OUT UINT64 *MaximumVariableSize,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ )\r
+;\r
+\r
+#endif\r
--- /dev/null
+/** @file\r
+ Variable worker functions.\r
+\r
+ Copyright (c) 2006, Intel Corporation<BR>\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
+ 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
+/**\r
+ Get one variable by the index count.\r
+\r
+ @param IndexTable The pointer to variable index table.\r
+ @param Count The index count of variable in index table.\r
+\r
+ @return The pointer to variable header indexed by count.\r
+\r
+**/\r
+VARIABLE_HEADER *\r
+GetVariableByIndex (\r
+ IN VARIABLE_INDEX_TABLE *IndexTable,\r
+ IN UINT32 Count\r
+ )\r
+{\r
+ return (VARIABLE_HEADER *) (UINTN) ((((UINT32)IndexTable->Index[Count]) << 2) + ((UINT32)(UINTN)IndexTable->StartPtr & 0xFFFC0000) );\r
+}\r
+\r
+/**\r
+ Record Variable in VariableIndex HOB.\r
+\r
+ Record Variable in VariableIndex HOB and update the length of variable index table.\r
+\r
+ @param IndexTable The pointer to variable index table.\r
+ @param Variable The pointer to the variable that will be recorded.\r
+\r
+ @retval VOID\r
+\r
+**/\r
+VOID\r
+VariableIndexTableUpdate (\r
+ IN OUT VARIABLE_INDEX_TABLE *IndexTable,\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+{\r
+ IndexTable->Index[IndexTable->Length++] = (UINT16) (((UINT32)(UINTN) Variable) >> 2);\r
+\r
+ return;\r
+}\r
+\r
--- /dev/null
+/*++\r
+\r
+Copyright (c) 2006 - 2007 Intel Corporation. <BR>\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
+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
+Module Name:\r
+\r
+ Variable.c\r
+\r
+Abstract:\r
+\r
+ Framework PEIM to provide the Variable functionality\r
+\r
+--*/\r
+\r
+\r
+#include "Variable.h"\r
+\r
+//\r
+// Module globals\r
+//\r
+static EFI_PEI_READ_ONLY_VARIABLE2_PPI mVariablePpi = {\r
+ PeiGetVariable,\r
+ PeiGetNextVariableName\r
+};\r
+\r
+static EFI_PEI_PPI_DESCRIPTOR mPpiListVariable = {\r
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
+ &gEfiPeiReadOnlyVariable2PpiGuid,\r
+ &mVariablePpi\r
+};\r
+\r
+EFI_GUID mEfiVariableIndexTableGuid = EFI_VARIABLE_INDEX_TABLE_GUID;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeimInitializeVariableServices (\r
+ IN EFI_FFS_FILE_HEADER *FfsHeader,\r
+ IN EFI_PEI_SERVICES **PeiServices\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Provide the functionality of the variable services.\r
+\r
+Arguments:\r
+\r
+ FfsHeadher - The FFS file header\r
+ PeiServices - General purpose services available to every PEIM.\r
+\r
+Returns:\r
+\r
+ Status - EFI_SUCCESS if the interface could be successfully\r
+ installed\r
+\r
+--*/\r
+{\r
+ //\r
+ // Publish the variable capability to other modules\r
+ //\r
+ return (**PeiServices).InstallPpi (PeiServices, &mPpiListVariable);\r
+\r
+}\r
+\r
+STATIC\r
+VARIABLE_HEADER *\r
+GetNextVariablePtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code checks if variable header is valid or not.\r
+\r
+Arguments:\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+ TRUE Variable header is valid.\r
+ FALSE Variable header is not valid.\r
+\r
+--*/\r
+{\r
+ return (VARIABLE_HEADER *) ((UINTN) GET_VARIABLE_DATA_PTR (Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));\r
+}\r
+\r
+STATIC\r
+BOOLEAN\r
+EFIAPI\r
+IsValidVariableHeader (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code checks if variable header is valid or not.\r
+\r
+Arguments:\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+ TRUE Variable header is valid.\r
+ FALSE Variable header is not valid.\r
+\r
+--*/\r
+{\r
+ if (Variable == NULL ||\r
+ Variable->StartId != VARIABLE_DATA ||\r
+ (sizeof (VARIABLE_HEADER) + Variable->DataSize + Variable->NameSize) > MAX_VARIABLE_SIZE\r
+ ) {\r
+ return FALSE;\r
+ }\r
+\r
+ return TRUE;\r
+}\r
+\r
+STATIC\r
+VARIABLE_STORE_STATUS\r
+EFIAPI\r
+GetVariableStoreStatus (\r
+ IN VARIABLE_STORE_HEADER *VarStoreHeader\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the variable name.\r
+\r
+Arguments:\r
+\r
+ VarStoreHeader Pointer to the Variable Store Header.\r
+\r
+Returns:\r
+\r
+ EfiRaw Variable store is raw\r
+ EfiValid Variable store is valid\r
+ EfiInvalid Variable store is invalid\r
+\r
+--*/\r
+{\r
+ if (VarStoreHeader->Signature == VARIABLE_STORE_SIGNATURE &&\r
+ VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r
+ VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r
+ ) {\r
+\r
+ return EfiValid;\r
+ }\r
+\r
+ if (VarStoreHeader->Signature == 0xffffffff &&\r
+ VarStoreHeader->Size == 0xffffffff &&\r
+ VarStoreHeader->Format == 0xff &&\r
+ VarStoreHeader->State == 0xff\r
+ ) {\r
+\r
+ return EfiRaw;\r
+ } else {\r
+ return EfiInvalid;\r
+ }\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+CompareWithValidVariable (\r
+ IN VARIABLE_HEADER *Variable,\r
+ IN CONST CHAR16 *VariableName,\r
+ IN CONST EFI_GUID *VendorGuid,\r
+ OUT VARIABLE_POINTER_TRACK *PtrTrack\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This function compares a variable with variable entries in database\r
+\r
+Arguments:\r
+\r
+ Variable - Pointer to the variable in our database\r
+ VariableName - Name of the variable to compare to 'Variable'\r
+ VendorGuid - GUID of the variable to compare to 'Variable'\r
+ PtrTrack - Variable Track Pointer structure that contains\r
+ Variable Information.\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - Found match variable\r
+ EFI_NOT_FOUND - Variable not found\r
+\r
+--*/\r
+{\r
+ if (VariableName[0] == 0) {\r
+ PtrTrack->CurrPtr = Variable;\r
+ return EFI_SUCCESS;\r
+ } else {\r
+ //\r
+ // Don't use CompareGuid function here for performance reasons.\r
+ // Instead we compare the GUID a UINT32 at a time and branch\r
+ // on the first failed comparison.\r
+ //\r
+ if ((((INT32 *) VendorGuid)[0] == ((INT32 *) &Variable->VendorGuid)[0]) &&\r
+ (((INT32 *) VendorGuid)[1] == ((INT32 *) &Variable->VendorGuid)[1]) &&\r
+ (((INT32 *) VendorGuid)[2] == ((INT32 *) &Variable->VendorGuid)[2]) &&\r
+ (((INT32 *) VendorGuid)[3] == ((INT32 *) &Variable->VendorGuid)[3])\r
+ ) {\r
+ if (!CompareMem (VariableName, GET_VARIABLE_NAME_PTR (Variable), Variable->NameSize)) {\r
+ PtrTrack->CurrPtr = Variable;\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+ }\r
+\r
+ return EFI_NOT_FOUND;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+FindVariable (\r
+ IN EFI_PEI_SERVICES **PeiServices,\r
+ IN CONST CHAR16 *VariableName,\r
+ IN CONST EFI_GUID *VendorGuid,\r
+ OUT VARIABLE_POINTER_TRACK *PtrTrack\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code finds variable in storage blocks (Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ PeiServices - General purpose services available to every PEIM.\r
+ VariableName - Name of the variable to be found\r
+ VendorGuid - Vendor GUID to be found.\r
+ PtrTrack - Variable Track Pointer structure that contains\r
+ Variable Information.\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - Variable found successfully\r
+ EFI_NOT_FOUND - Variable not found\r
+ EFI_INVALID_PARAMETER - Invalid variable name\r
+\r
+--*/\r
+{\r
+ EFI_HOB_GUID_TYPE *GuidHob;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+ VARIABLE_HEADER *Variable;\r
+ VARIABLE_HEADER *MaxIndex;\r
+ VARIABLE_INDEX_TABLE *IndexTable;\r
+ UINT32 Count;\r
+ UINT8 *VariableBase;\r
+\r
+ if (VariableName != 0 && VendorGuid == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ //\r
+ // No Variable Address equals zero, so 0 as initial value is safe.\r
+ //\r
+ MaxIndex = 0;\r
+\r
+ GuidHob = GetFirstGuidHob (&mEfiVariableIndexTableGuid);\r
+ if (GuidHob == NULL) {\r
+ IndexTable = BuildGuidHob (&mEfiVariableIndexTableGuid, sizeof (VARIABLE_INDEX_TABLE));\r
+ IndexTable->Length = 0;\r
+ IndexTable->StartPtr = NULL;\r
+ IndexTable->EndPtr = NULL;\r
+ IndexTable->GoneThrough = 0;\r
+ } else {\r
+ IndexTable = GET_GUID_HOB_DATA (GuidHob);\r
+ for (Count = 0; Count < IndexTable->Length; Count++)\r
+ {\r
+ MaxIndex = GetVariableByIndex (IndexTable, Count);\r
+\r
+ if (CompareWithValidVariable (MaxIndex, VariableName, VendorGuid, PtrTrack) == EFI_SUCCESS) {\r
+ PtrTrack->StartPtr = IndexTable->StartPtr;\r
+ PtrTrack->EndPtr = IndexTable->EndPtr;\r
+\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+\r
+ if (IndexTable->GoneThrough) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ }\r
+ //\r
+ // If not found in HOB, then let's start from the MaxIndex we've found.\r
+ //\r
+ if (MaxIndex != NULL) {\r
+ Variable = GetNextVariablePtr (MaxIndex);\r
+ } else {\r
+ if (IndexTable->StartPtr || IndexTable->EndPtr) {\r
+ Variable = IndexTable->StartPtr;\r
+ } else {\r
+ VariableBase = (UINT8 *) (UINTN) PcdGet32 (PcdFlashNvStorageVariableBase);\r
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *) (VariableBase + \\r
+ ((EFI_FIRMWARE_VOLUME_HEADER *) (VariableBase)) -> HeaderLength);\r
+\r
+ if (GetVariableStoreStatus (VariableStoreHeader) != EfiValid) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ if (~VariableStoreHeader->Size == 0) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ //\r
+ // Find the variable by walk through non-volatile variable store\r
+ //\r
+ IndexTable->StartPtr = (VARIABLE_HEADER *) (VariableStoreHeader + 1);\r
+ IndexTable->EndPtr = (VARIABLE_HEADER *) ((UINTN) VariableStoreHeader + VariableStoreHeader->Size);\r
+\r
+ //\r
+ // Start Pointers for the variable.\r
+ // Actual Data Pointer where data can be written.\r
+ //\r
+ Variable = IndexTable->StartPtr;\r
+ }\r
+ }\r
+ //\r
+ // Find the variable by walk through non-volatile variable store\r
+ //\r
+ PtrTrack->StartPtr = IndexTable->StartPtr;\r
+ PtrTrack->EndPtr = IndexTable->EndPtr;\r
+\r
+ while (IsValidVariableHeader (Variable) && (Variable <= IndexTable->EndPtr)) {\r
+ if (Variable->State == VAR_ADDED) {\r
+ //\r
+ // Record Variable in VariableIndex HOB\r
+ //\r
+ if (IndexTable->Length < VARIABLE_INDEX_TABLE_VOLUME)\r
+ {\r
+ VariableIndexTableUpdate (IndexTable, Variable);\r
+ }\r
+\r
+ if (CompareWithValidVariable (Variable, VariableName, VendorGuid, PtrTrack) == EFI_SUCCESS) {\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+\r
+ Variable = GetNextVariablePtr (Variable);\r
+ }\r
+ //\r
+ // If gone through the VariableStore, that means we never find in Firmware any more.\r
+ //\r
+ if (IndexTable->Length < VARIABLE_INDEX_TABLE_VOLUME) {\r
+ IndexTable->GoneThrough = 1;\r
+ }\r
+\r
+ PtrTrack->CurrPtr = NULL;\r
+\r
+ return EFI_NOT_FOUND;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetVariable (\r
+ IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,\r
+ IN CONST CHAR16 *VariableName,\r
+ IN CONST EFI_GUID *VariableGuid,\r
+ OUT UINT32 *Attributes,\r
+ IN OUT UINTN *DataSize,\r
+ OUT VOID *Data\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Provide the read variable functionality of the variable services.\r
+\r
+Arguments:\r
+\r
+ PeiServices - General purpose services available to every PEIM.\r
+\r
+ VariableName - The variable name\r
+\r
+ VendorGuid - The vendor's GUID\r
+\r
+ Attributes - Pointer to the attribute\r
+\r
+ DataSize - Size of data\r
+\r
+ Data - Pointer to data\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - The interface could be successfully installed\r
+\r
+ EFI_NOT_FOUND - The variable could not be discovered\r
+\r
+ EFI_BUFFER_TOO_SMALL - The caller buffer is not large enough\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarDataSize;\r
+ EFI_STATUS Status;\r
+ EFI_PEI_SERVICES **PeiServices;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ if (VariableName == NULL || VariableGuid == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ //\r
+ // Find existing variable\r
+ //\r
+ Status = FindVariable (PeiServices, VariableName, VariableGuid, &Variable);\r
+ if (Variable.CurrPtr == NULL || Status != EFI_SUCCESS) {\r
+ return Status;\r
+ }\r
+ //\r
+ // Get data size\r
+ //\r
+ VarDataSize = Variable.CurrPtr->DataSize;\r
+ if (*DataSize >= VarDataSize) {\r
+ (*PeiServices)->CopyMem (Data, GET_VARIABLE_DATA_PTR (Variable.CurrPtr), VarDataSize);\r
+\r
+ if (Attributes != NULL) {\r
+ *Attributes = Variable.CurrPtr->Attributes;\r
+ }\r
+\r
+ *DataSize = VarDataSize;\r
+ return EFI_SUCCESS;\r
+ } else {\r
+ *DataSize = VarDataSize;\r
+ return EFI_BUFFER_TOO_SMALL;\r
+ }\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetNextVariableName (\r
+ IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VariableGuid\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Provide the get next variable functionality of the variable services.\r
+\r
+Arguments:\r
+\r
+ PeiServices - General purpose services available to every PEIM.\r
+ VariabvleNameSize - The variable name's size.\r
+ VariableName - A pointer to the variable's name.\r
+ VariableGuid - A pointer to the EFI_GUID structure.\r
+\r
+ VariableNameSize - Size of the variable name\r
+\r
+ VariableName - The variable name\r
+\r
+ VendorGuid - The vendor's GUID\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - The interface could be successfully installed\r
+\r
+ EFI_NOT_FOUND - The variable could not be discovered\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarNameSize;\r
+ EFI_STATUS Status;\r
+ EFI_PEI_SERVICES **PeiServices;\r
+\r
+ PeiServices = GetPeiServicesTablePointer ();\r
+ if (VariableName == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Status = FindVariable (PeiServices, VariableName, VariableGuid, &Variable);\r
+ if (Variable.CurrPtr == NULL || Status != EFI_SUCCESS) {\r
+ return Status;\r
+ }\r
+\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
+ while (!(Variable.CurrPtr >= Variable.EndPtr || Variable.CurrPtr == NULL)) {\r
+ if (IsValidVariableHeader (Variable.CurrPtr)) {\r
+ if (Variable.CurrPtr->State == VAR_ADDED) {\r
+ VarNameSize = (UINTN) Variable.CurrPtr->NameSize;\r
+ if (VarNameSize <= *VariableNameSize) {\r
+ (*PeiServices)->CopyMem (VariableName, GET_VARIABLE_NAME_PTR (Variable.CurrPtr), VarNameSize);\r
+\r
+ (*PeiServices)->CopyMem (VariableGuid, &Variable.CurrPtr->VendorGuid, sizeof (EFI_GUID));\r
+\r
+ Status = EFI_SUCCESS;\r
+ } else {\r
+ Status = EFI_BUFFER_TOO_SMALL;\r
+ }\r
+\r
+ *VariableNameSize = VarNameSize;\r
+ return Status;\r
+ //\r
+ // Variable is found\r
+ //\r
+ } else {\r
+ Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
+ }\r
+ } else {\r
+ break;\r
+ }\r
+ }\r
+\r
+ return EFI_NOT_FOUND;\r
+}\r
--- /dev/null
+/*++\r
+\r
+Copyright (c) 2006, 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
+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
+Module Name:\r
+\r
+ Variable.dxs\r
+\r
+Abstract:\r
+\r
+ Dependency expression file for Variable PEIM.\r
+\r
+--*/ \r
+//\r
+// Include common header file for this module.\r
+//\r
+#include "CommonHeader.h"\r
+\r
+#include <PeimDepex.h>\r
+\r
+DEPENDENCY_START\r
+ TRUE\r
+DEPENDENCY_END\r
+\r
+\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ Variable.h\r
+\r
+Abstract:\r
+\r
+ Tiano PEIM to provide the variable functionality\r
+\r
+--*/\r
+\r
+#ifndef _PEI_VARIABLE_H\r
+#define _PEI_VARIABLE_H\r
+\r
+#include <PiPei.h>\r
+#include <Ppi/ReadOnlyVariable2.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/PeimEntryPoint.h>\r
+#include <Library/HobLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/PeiServicesTablePointerLib.h>\r
+\r
+\r
+//\r
+// BugBug: We need relcate the head file.\r
+//\r
+#include <Common/Variable.h>\r
+\r
+//\r
+// Define GET_PAD_SIZE to optimize compiler\r
+//\r
+#if ((ALIGNMENT == 0) || (ALIGNMENT == 1))\r
+#define GET_PAD_SIZE(a) (0)\r
+#else\r
+#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))\r
+#endif\r
+\r
+#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))\r
+\r
+#define GET_VARIABLE_DATA_PTR(a) \\r
+ (UINT8 *) ((UINTN) GET_VARIABLE_NAME_PTR (a) + (a)->NameSize + GET_PAD_SIZE ((a)->NameSize))\r
+\r
+typedef struct {\r
+ VARIABLE_HEADER *CurrPtr;\r
+ VARIABLE_HEADER *EndPtr;\r
+ VARIABLE_HEADER *StartPtr;\r
+} VARIABLE_POINTER_TRACK;\r
+\r
+#define VARIABLE_INDEX_TABLE_VOLUME 122\r
+\r
+#define EFI_VARIABLE_INDEX_TABLE_GUID \\r
+ { 0x8cfdb8c8, 0xd6b2, 0x40f3, { 0x8e, 0x97, 0x02, 0x30, 0x7c, 0xc9, 0x8b, 0x7c } }\r
+\r
+typedef struct {\r
+ UINT16 Length;\r
+ UINT16 GoneThrough;\r
+ VARIABLE_HEADER *EndPtr;\r
+ VARIABLE_HEADER *StartPtr;\r
+ UINT16 Index[VARIABLE_INDEX_TABLE_VOLUME];\r
+} VARIABLE_INDEX_TABLE;\r
+\r
+\r
+//\r
+// Functions\r
+//\r
+EFI_STATUS\r
+EFIAPI\r
+PeimInitializeVariableServices (\r
+ IN EFI_FFS_FILE_HEADER *FfsHeader,\r
+ IN EFI_PEI_SERVICES **PeiServices\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ TODO: Add function description\r
+\r
+Arguments:\r
+\r
+ FfsHeader - TODO: add argument description\r
+ PeiServices - TODO: add argument description\r
+\r
+Returns:\r
+\r
+ TODO: add return values\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetVariable (\r
+ IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,\r
+ IN CONST CHAR16 *VariableName,\r
+ IN CONST EFI_GUID *VariableGuid,\r
+ OUT UINT32 *Attributes,\r
+ IN OUT UINTN *DataSize,\r
+ OUT VOID *Data\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ TODO: Add function description\r
+\r
+Arguments:\r
+\r
+ PeiServices - TODO: add argument description\r
+ VariableName - TODO: add argument description\r
+ VendorGuid - TODO: add argument description\r
+ Attributes - TODO: add argument description\r
+ DataSize - TODO: add argument description\r
+ Data - TODO: add argument description\r
+\r
+Returns:\r
+\r
+ TODO: add return values\r
+\r
+--*/\r
+;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetNextVariableName (\r
+ IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VariableGuid\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ TODO: Add function description\r
+\r
+Arguments:\r
+\r
+ PeiServices - TODO: add argument description\r
+ VariableNameSize - TODO: add argument description\r
+ VariableName - TODO: add argument description\r
+ VendorGuid - TODO: add argument description\r
+\r
+Returns:\r
+\r
+ TODO: add return values\r
+\r
+--*/\r
+;\r
+\r
+/**\r
+ Get one variable by the index count.\r
+\r
+ @param IndexTable The pointer to variable index table.\r
+ @param Count The index count of variable in index table.\r
+\r
+ @return The pointer to variable header indexed by count.\r
+\r
+**/\r
+VARIABLE_HEADER *\r
+GetVariableByIndex (\r
+ IN VARIABLE_INDEX_TABLE *IndexTable,\r
+ IN UINT32 Count\r
+ );\r
+\r
+/**\r
+ Record Variable in VariableIndex HOB.\r
+\r
+ Record Variable in VariableIndex HOB and update the length of variable index table.\r
+\r
+ @param IndexTable The pointer to variable index table.\r
+ @param Variable The pointer to the variable that will be recorded.\r
+\r
+ @retval VOID\r
+\r
+**/\r
+VOID\r
+VariableIndexTableUpdate (\r
+ IN OUT VARIABLE_INDEX_TABLE *IndexTable,\r
+ IN VARIABLE_HEADER *Variable\r
+ );\r
+\r
+#endif // _PEI_VARIABLE_H\r
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>\r
+<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">\r
+ <MsaHeader>\r
+ <ModuleName>PeiVariable</ModuleName>\r
+ <ModuleType>PEIM</ModuleType>\r
+ <GuidValue>34C8C28F-B61C-45a2-8F2E-89E46BECC63B</GuidValue>\r
+ <Version>1.0</Version>\r
+ <Abstract>Component description file for PeiVariable module.</Abstract>\r
+ <Description>Framework PEIM to provide the Variable functionality.</Description>\r
+ <Copyright>Copyright (c) 2006 - 2007, Intel Corporation</Copyright>\r
+ <License>All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.</License>\r
+ <Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>\r
+ </MsaHeader>\r
+ <ModuleDefinitions>\r
+ <SupportedArchitectures>IA32 X64 IPF EBC</SupportedArchitectures>\r
+ <BinaryModule>false</BinaryModule>\r
+ <OutputFileBasename>PeiVariable</OutputFileBasename>\r
+ </ModuleDefinitions>\r
+ <LibraryClassDefinitions>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>DebugLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>PeimEntryPoint</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>HobLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>PcdLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>BaseMemoryLib</Keyword>\r
+ </LibraryClass>\r
+ </LibraryClassDefinitions>\r
+ <SourceFiles>\r
+ <Filename>Variable.h</Filename>\r
+ <Filename>Variable.c</Filename>\r
+ <Filename>Variable.dxs</Filename>\r
+ <Filename SupArchList="IA32 X64 EBC">VariableWorker.c</Filename>\r
+ <Filename SupArchList="IPF">Ipf/VariableWorker.c</Filename>\r
+ <Filename SupArchList="IA32">Ia32/VarMachine.h</Filename>\r
+ <Filename SupArchList="EBC">Ebc/VarMachine.h</Filename>\r
+ <Filename SupArchList="X64">x64/VarMachine.h</Filename>\r
+ <Filename SupArchList="IPF">Ipf/VarMachine.h</Filename>\r
+ </SourceFiles>\r
+ <PackageDependencies>\r
+ <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>\r
+ <Package PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d"/>\r
+ </PackageDependencies>\r
+ <PPIs>\r
+ <Ppi Usage="ALWAYS_CONSUMED">\r
+ <PpiCName>gEfiPeiReadOnlyVariablePpiGuid</PpiCName>\r
+ </Ppi>\r
+ </PPIs>\r
+ <Externs>\r
+ <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>\r
+ <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>\r
+ <Extern>\r
+ <ModuleEntryPoint>PeimInitializeVariableServices</ModuleEntryPoint>\r
+ </Extern>\r
+ </Externs>\r
+ <PcdCoded>\r
+ <PcdEntry PcdItemType="DYNAMIC">\r
+ <C_Name>PcdFlashNvStorageVariableBase</C_Name>\r
+ <TokenSpaceGuidCName>gEfiGenericPlatformTokenSpaceGuid</TokenSpaceGuidCName>\r
+ <HelpText>The driver gets the Variable store base address from this PCD. This base address point to
+ an EFI_FIRMWARE_VOLUMN_HEADER struct.</HelpText>\r
+ </PcdEntry>\r
+ </PcdCoded>\r
+</ModuleSurfaceArea>
\ No newline at end of file
--- /dev/null
+#/** @file\r
+# Component description file for PeiVariable module.\r
+#\r
+# Framework PEIM to provide the Variable functionality.\r
+# Copyright (c) 2006 - 2007, Intel Corporation\r
+#\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
+# http://opensource.org/licenses/bsd-license.php\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
+\r
+[Defines]\r
+ INF_VERSION = 0x00010005\r
+ BASE_NAME = PeiVariable\r
+ FILE_GUID = 34C8C28F-B61C-45a2-8F2E-89E46BECC63B\r
+ MODULE_TYPE = PEIM\r
+ VERSION_STRING = 1.0\r
+ EDK_RELEASE_VERSION = 0x00020000\r
+ EFI_SPECIFICATION_VERSION = 0x00020000\r
+\r
+ ENTRY_POINT = PeimInitializeVariableServices\r
+\r
+#\r
+# The following information is for reference only and not required by the build tools.\r
+#\r
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC\r
+#\r
+\r
+[Sources.common]\r
+ Variable.c\r
+ Variable.h\r
+\r
+[Sources.Ia32]\r
+ VariableWorker.c\r
+\r
+[Sources.X64]\r
+ VariableWorker.c\r
+\r
+[Sources.IPF]\r
+ Ipf/VariableWorker.c\r
+\r
+[Sources.EBC]\r
+ VariableWorker.c\r
+\r
+[Packages]\r
+ MdePkg/MdePkg.dec\r
+ MdeModulePkg/MdeModulePkg.dec\r
+\r
+[LibraryClasses]\r
+ BaseMemoryLib\r
+ PcdLib\r
+ HobLib\r
+ PeimEntryPoint\r
+ DebugLib\r
+ PeiServiceTablePointerLib\r
+\r
+[Ppis]\r
+ gEfiPeiReadOnlyVariable2PpiGuid # PPI ALWAYS_CONSUMED\r
+\r
+[PcdsDynamic.common]\r
+ PcdFlashNvStorageVariableBase|gEfiMdeModulePkgTokenSpaceGuid\r
+\r
+[Depex]\r
+ TRUE\r
--- /dev/null
+/*++\r
+\r
+Copyright (c) 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
+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
+Module Name:\r
+\r
+ VariableWorker.c\r
+\r
+Abstract:\r
+\r
+ Framework PEIM to provide the Variable functionality\r
+\r
+--*/\r
+\r
+#include <Variable.h>\r
+\r
+/**\r
+ Get one variable by the index count.\r
+\r
+ @param IndexTable The pointer to variable index table.\r
+ @param Count The index count of variable in index table.\r
+\r
+ @return The pointer to variable header indexed by count.\r
+\r
+**/\r
+VARIABLE_HEADER *\r
+GetVariableByIndex (\r
+ IN VARIABLE_INDEX_TABLE *IndexTable,\r
+ IN UINT32 Count\r
+ )\r
+{\r
+ return (VARIABLE_HEADER *) (UINTN) (IndexTable->Index[Count] + ((UINTN) IndexTable->StartPtr & 0xFFFF0000));\r
+}\r
+\r
+/**\r
+ Record Variable in VariableIndex HOB.\r
+\r
+ Record Variable in VariableIndex HOB and update the length of variable index table.\r
+\r
+ @param IndexTable The pointer to variable index table.\r
+ @param Variable The pointer to the variable that will be recorded.\r
+\r
+ @retval VOID\r
+\r
+**/\r
+VOID\r
+VariableIndexTableUpdate (\r
+ IN OUT VARIABLE_INDEX_TABLE *IndexTable,\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+{\r
+ IndexTable->Index[IndexTable->Length++] = (UINT16) (UINTN) Variable;\r
+\r
+ return;\r
+}\r
+\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ InitVariable.c\r
+\r
+Abstract:\r
+\r
+Revision History\r
+\r
+--*/\r
+\r
+#include "Variable.h"\r
+\r
+//\r
+// Event for Exit Boot Services Callback\r
+//\r
+STATIC EFI_EVENT mExitBootServicesEvent = NULL;\r
+\r
+\r
+//\r
+// Don't use module globals after the SetVirtualAddress map is signaled\r
+//\r
+extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceGetVariable (\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
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return GetVariable (\r
+ VariableName,\r
+ VendorGuid,\r
+ Attributes OPTIONAL,\r
+ DataSize,\r
+ Data,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceGetNextVariableName (\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VendorGuid\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return GetNextVariableName (\r
+ VariableNameSize,\r
+ VariableName,\r
+ VendorGuid,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceSetVariable (\r
+ IN CHAR16 *VariableName,\r
+ IN EFI_GUID *VendorGuid,\r
+ IN UINT32 Attributes,\r
+ IN UINTN DataSize,\r
+ IN VOID *Data\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return SetVariable (\r
+ VariableName,\r
+ VendorGuid,\r
+ Attributes,\r
+ DataSize,\r
+ Data,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ &mVariableModuleGlobal->VolatileLastVariableOffset,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+RuntimeServiceQueryVariableInfo (\r
+ IN UINT32 Attributes,\r
+ OUT UINT64 *MaximumVariableStorageSize,\r
+ OUT UINT64 *RemainingVariableStorageSize,\r
+ OUT UINT64 *MaximumVariableSize\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ return QueryVariableInfo (\r
+ Attributes,\r
+ MaximumVariableStorageSize,\r
+ RemainingVariableStorageSize,\r
+ MaximumVariableSize,\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ mVariableModuleGlobal->FvbInstance\r
+ );\r
+}\r
+\r
+VOID\r
+EFIAPI\r
+VariableClassAddressChangeEvent (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ EfiConvertPointer (\r
+ 0x0,\r
+ (VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase\r
+ );\r
+ EfiConvertPointer (\r
+ 0x0,\r
+ (VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase\r
+ );\r
+ EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VariableServiceInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+Arguments:\r
+\r
+Returns:\r
+\r
+--*/\r
+{\r
+ EFI_HANDLE NewHandle;\r
+ EFI_STATUS Status;\r
+\r
+ Status = VariableCommonInitialize (ImageHandle, SystemTable);\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
+ NewHandle = NULL;\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &NewHandle,\r
+ &gEfiVariableArchProtocolGuid,\r
+ NULL,\r
+ &gEfiVariableWriteArchProtocolGuid,\r
+ NULL,\r
+ NULL\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ Status = gBS->CreateEvent (\r
+ EVT_SIGNAL_EXIT_BOOT_SERVICES,\r
+ TPL_NOTIFY,\r
+ VariableClassAddressChangeEvent,\r
+ NULL,\r
+ &mExitBootServicesEvent\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ return EFI_SUCCESS;\r
+}\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ Variable.c\r
+\r
+Abstract:\r
+\r
+Revision History\r
+\r
+--*/\r
+\r
+\r
+#include "Variable.h"\r
+#include <Common/FlashMap.h>\r
+\r
+//\r
+// Don't use module globals after the SetVirtualAddress map is signaled\r
+//\r
+ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
+\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
+ if (!EfiAtRuntime ()) {\r
+ EfiAcquireLock (Lock);\r
+ }\r
+}\r
+\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
+\r
+STATIC\r
+BOOLEAN\r
+EFIAPI\r
+IsValidVariableHeader (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code checks if variable header is valid or not.\r
+\r
+Arguments:\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+ TRUE Variable header is valid.\r
+ FALSE Variable header is not valid.\r
+\r
+--*/\r
+{\r
+ if (Variable == NULL ||\r
+ Variable->StartId != VARIABLE_DATA ||\r
+ (sizeof (VARIABLE_HEADER) + Variable->NameSize + Variable->DataSize) > MAX_VARIABLE_SIZE\r
+ ) {\r
+ return FALSE;\r
+ }\r
+\r
+ return TRUE;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+UpdateVariableStore (\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN BOOLEAN Volatile,\r
+ IN BOOLEAN SetByIndex,\r
+ IN UINTN Instance,\r
+ IN UINTN DataPtrIndex,\r
+ IN UINT32 DataSize,\r
+ IN UINT8 *Buffer\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This function writes data to the FWH at the correct LBA even if the LBAs\r
+ are fragmented.\r
+\r
+Arguments:\r
+\r
+ Global Pointer to VARAIBLE_GLOBAL structure\r
+ Volatile If the Variable is Volatile or Non-Volatile\r
+ SetByIndex TRUE: Target pointer is given as index\r
+ FALSE: Target pointer is absolute\r
+ Instance Instance of FV Block services\r
+ DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r
+ structure\r
+ DataSize Size of data to be written.\r
+ Buffer Pointer to the buffer from which data is written\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r
+ UINTN BlockIndex2;\r
+ UINTN LinearOffset;\r
+ UINTN CurrWriteSize;\r
+ UINTN CurrWritePtr;\r
+ UINT8 *CurrBuffer;\r
+ EFI_LBA LbaNumber;\r
+ UINTN Size;\r
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
+ VARIABLE_STORE_HEADER *VolatileBase;\r
+ EFI_PHYSICAL_ADDRESS FvVolHdr;\r
+ EFI_PHYSICAL_ADDRESS DataPtr;\r
+ EFI_STATUS Status;\r
+\r
+ FwVolHeader = NULL;\r
+ DataPtr = DataPtrIndex;\r
+\r
+ //\r
+ // Check if the Data is Volatile\r
+ //\r
+ if (!Volatile) {\r
+ EfiFvbGetPhysicalAddress (Instance, &FvVolHdr);\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
+ //\r
+ if (SetByIndex) {\r
+ DataPtr += Global->NonVolatileVariableBase;\r
+ }\r
+\r
+ if ((DataPtr + DataSize) >= ((EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) FwVolHeader + FwVolHeader->FvLength))) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ } else {\r
+ //\r
+ // Data Pointer should point to the actual Address where data is to be\r
+ // written\r
+ //\r
+ VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase);\r
+ if (SetByIndex) {\r
+ DataPtr += Global->VolatileVariableBase;\r
+ }\r
+\r
+ if ((DataPtr + DataSize) >= ((UINTN) ((UINT8 *) VolatileBase + VolatileBase->Size))) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ }\r
+ //\r
+ // If Volatile Variable just do a simple mem copy.\r
+ //\r
+ if (Volatile) {\r
+ CopyMem ((UINT8 *) ((UINTN) DataPtr), Buffer, DataSize);\r
+ return EFI_SUCCESS;\r
+ }\r
+ //\r
+ // If we are here we are dealing with Non-Volatile Variables\r
+ //\r
+ LinearOffset = (UINTN) FwVolHeader;\r
+ CurrWritePtr = (UINTN) DataPtr;\r
+ CurrWriteSize = DataSize;\r
+ CurrBuffer = Buffer;\r
+ LbaNumber = 0;\r
+\r
+ if (CurrWritePtr < LinearOffset) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ for (PtrBlockMapEntry = FwVolHeader->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r
+ for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r
+ //\r
+ // Check to see if the Variable Writes are spanning through multiple\r
+ // blocks.\r
+ //\r
+ if ((CurrWritePtr >= LinearOffset) && (CurrWritePtr < LinearOffset + PtrBlockMapEntry->Length)) {\r
+ if ((CurrWritePtr + CurrWriteSize) <= (LinearOffset + PtrBlockMapEntry->Length)) {\r
+ Status = EfiFvbWriteBlock (\r
+ Instance,\r
+ LbaNumber,\r
+ (UINTN) (CurrWritePtr - LinearOffset),\r
+ &CurrWriteSize,\r
+ CurrBuffer\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ } else {\r
+ Size = (UINT32) (LinearOffset + PtrBlockMapEntry->Length - CurrWritePtr);\r
+ Status = EfiFvbWriteBlock (\r
+ Instance,\r
+ LbaNumber,\r
+ (UINTN) (CurrWritePtr - LinearOffset),\r
+ &Size,\r
+ CurrBuffer\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ CurrWritePtr = LinearOffset + PtrBlockMapEntry->Length;\r
+ CurrBuffer = CurrBuffer + Size;\r
+ CurrWriteSize = CurrWriteSize - Size;\r
+ }\r
+ }\r
+\r
+ LinearOffset += PtrBlockMapEntry->Length;\r
+ LbaNumber++;\r
+ }\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+STATIC\r
+VARIABLE_STORE_STATUS\r
+EFIAPI\r
+GetVariableStoreStatus (\r
+ IN VARIABLE_STORE_HEADER *VarStoreHeader\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the current status of Variable Store.\r
+\r
+Arguments:\r
+\r
+ VarStoreHeader Pointer to the Variable Store Header.\r
+\r
+Returns:\r
+\r
+ EfiRaw Variable store status is raw\r
+ EfiValid Variable store status is valid\r
+ EfiInvalid Variable store status is invalid\r
+\r
+--*/\r
+{\r
+ if (VarStoreHeader->Signature == VARIABLE_STORE_SIGNATURE &&\r
+ VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r
+ VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r
+ ) {\r
+\r
+ return EfiValid;\r
+ } else if (VarStoreHeader->Signature == 0xffffffff &&\r
+ VarStoreHeader->Size == 0xffffffff &&\r
+ VarStoreHeader->Format == 0xff &&\r
+ VarStoreHeader->State == 0xff\r
+ ) {\r
+\r
+ return EfiRaw;\r
+ } else {\r
+ return EfiInvalid;\r
+ }\r
+}\r
+\r
+STATIC\r
+UINT8 *\r
+EFIAPI\r
+GetVariableDataPtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the variable data.\r
+\r
+Arguments:\r
+\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+\r
+ UINT8* Pointer to Variable Data\r
+\r
+--*/\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
+STATIC\r
+VARIABLE_HEADER *\r
+EFIAPI\r
+GetNextVariablePtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the next variable header.\r
+\r
+Arguments:\r
+\r
+ Variable Pointer to the Variable Header.\r
+\r
+Returns:\r
+\r
+ VARIABLE_HEADER* Pointer to next variable header.\r
+\r
+--*/\r
+{\r
+ if (!IsValidVariableHeader (Variable)) {\r
+ return NULL;\r
+ }\r
+ //\r
+ // Be careful about pad size for alignment\r
+ //\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
+ IN VARIABLE_STORE_HEADER *VarStoreHeader\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code gets the pointer to the last variable memory pointer byte\r
+\r
+Arguments:\r
+\r
+ VarStoreHeader Pointer to the Variable Store Header.\r
+\r
+Returns:\r
+\r
+ VARIABLE_HEADER* Pointer to last unavailable Variable Header\r
+\r
+--*/\r
+{\r
+ //\r
+ // The end of variable store\r
+ //\r
+ return (VARIABLE_HEADER *) ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+Reclaim (\r
+ IN EFI_PHYSICAL_ADDRESS VariableBase,\r
+ OUT UINTN *LastVariableOffset,\r
+ IN BOOLEAN IsVolatile\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Variable store garbage collection and reclaim operation\r
+\r
+Arguments:\r
+\r
+ VariableBase Base address of variable store\r
+ LastVariableOffset Offset of last variable\r
+ IsVolatile The variable store is volatile or not,\r
+ if it is non-volatile, need FTW\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_HEADER *Variable;\r
+ VARIABLE_HEADER *NextVariable;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+ UINT8 *ValidBuffer;\r
+ UINTN ValidBufferSize;\r
+ UINTN VariableSize;\r
+ UINT8 *CurrPtr;\r
+ EFI_STATUS Status;\r
+\r
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r
+\r
+ //\r
+ // Start Pointers for the variable.\r
+ //\r
+ Variable = (VARIABLE_HEADER *) (VariableStoreHeader + 1);\r
+\r
+ ValidBufferSize = sizeof (VARIABLE_STORE_HEADER);\r
+\r
+ while (IsValidVariableHeader (Variable)) {\r
+ NextVariable = GetNextVariablePtr (Variable);\r
+ if (Variable->State == VAR_ADDED) {\r
+ VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
+ ValidBufferSize += VariableSize;\r
+ }\r
+\r
+ Variable = NextVariable;\r
+ }\r
+\r
+ ValidBuffer = AllocatePool (ValidBufferSize);\r
+ if (ValidBuffer == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ SetMem (ValidBuffer, ValidBufferSize, 0xff);\r
+\r
+ CurrPtr = ValidBuffer;\r
+\r
+ //\r
+ // Copy variable store header\r
+ //\r
+ CopyMem (CurrPtr, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r
+ CurrPtr += sizeof (VARIABLE_STORE_HEADER);\r
+\r
+ //\r
+ // Start Pointers for the variable.\r
+ //\r
+ Variable = (VARIABLE_HEADER *) (VariableStoreHeader + 1);\r
+\r
+ while (IsValidVariableHeader (Variable)) {\r
+ NextVariable = GetNextVariablePtr (Variable);\r
+ if (Variable->State == VAR_ADDED) {\r
+ VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
+ CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r
+ CurrPtr += VariableSize;\r
+ }\r
+\r
+ Variable = NextVariable;\r
+ }\r
+\r
+ if (IsVolatile) {\r
+ //\r
+ // If volatile variable store, just copy valid buffer\r
+ //\r
+ SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r
+ CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, ValidBufferSize);\r
+ *LastVariableOffset = ValidBufferSize;\r
+ Status = EFI_SUCCESS;\r
+ } else {\r
+ //\r
+ // If non-volatile variable store, perform FTW here.\r
+ //\r
+ Status = FtwVariableSpace (\r
+ VariableBase,\r
+ ValidBuffer,\r
+ ValidBufferSize\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ *LastVariableOffset = ValidBufferSize;\r
+ }\r
+ }\r
+\r
+ FreePool (ValidBuffer);\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ *LastVariableOffset = 0;\r
+ }\r
+\r
+ return Status;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\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
+Routine Description:\r
+\r
+ This code finds variable in storage blocks (Volatile or Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ VariableName Name of the variable to be found\r
+ VendorGuid Vendor GUID to be found.\r
+ PtrTrack Variable Track Pointer structure that contains\r
+ Variable Information.\r
+ Contains the pointer of Variable header.\r
+ Global VARIABLE_GLOBAL pointer\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_HEADER *Variable[2];\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
+ 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 *) (VariableStoreHeader[0] + 1);\r
+ Variable[1] = (VARIABLE_HEADER *) (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 *) (VariableStoreHeader[Index] + 1);\r
+ PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Index]);\r
+\r
+ while (IsValidVariableHeader (Variable[Index]) && (Variable[Index] <= GetEndPointer (VariableStoreHeader[Index]))) {\r
+ if (Variable[Index]->State == VAR_ADDED) {\r
+ if (!(EfiAtRuntime () && !(Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS))) {\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)) {\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
+ // While (...)\r
+ //\r
+ }\r
+ //\r
+ // for (...)\r
+ //\r
+ PtrTrack->CurrPtr = NULL;\r
+ return EFI_NOT_FOUND;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+GetVariable (\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
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code finds variable in storage blocks (Volatile or Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ VariableName Name of Variable to be found\r
+ VendorGuid Variable vendor GUID\r
+ Attributes OPTIONAL Attribute value of the variable found\r
+ DataSize Size of Data found. If size is less than the\r
+ data, this value contains the required size.\r
+ Data Data pointer\r
+ Global Pointer to VARIABLE_GLOBAL structure\r
+ Instance Instance of the Firmware Volume.\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarDataSize;\r
+ EFI_STATUS Status;\r
+\r
+ if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r
+ return EFI_INVALID_PARAMETER;\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
+\r
+ CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r
+ if (Attributes != NULL) {\r
+ *Attributes = Variable.CurrPtr->Attributes;\r
+ }\r
+\r
+ *DataSize = VarDataSize;\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
+EFI_STATUS\r
+EFIAPI\r
+GetNextVariableName (\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VendorGuid,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code Finds the Next available variable\r
+\r
+Arguments:\r
+\r
+ VariableNameSize Size of the variable\r
+ VariableName Pointer to variable name\r
+ VendorGuid Variable Vendor Guid\r
+ Global VARIABLE_GLOBAL structure pointer.\r
+ Instance FV instance\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarNameSize;\r
+ EFI_STATUS Status;\r
+\r
+ if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
+\r
+ if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+\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
+ while (TRUE) {\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 *) ((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 (!IsValidVariableHeader (Variable.CurrPtr)) {\r
+ continue;\r
+ }\r
+ }\r
+ //\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))) {\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
+ Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
+ }\r
+\r
+Done:\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return Status;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+SetVariable (\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
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code sets variable in storage blocks (Volatile or Non-Volatile)\r
+\r
+Arguments:\r
+\r
+ VariableName Name of Variable to be found\r
+ VendorGuid Variable vendor GUID\r
+ Attributes Attribute value of the variable found\r
+ DataSize Size of Data found. If size is less than the\r
+ data, this value contains the required size.\r
+ Data Data pointer\r
+ Global Pointer to VARIABLE_GLOBAL structure\r
+ VolatileOffset The offset of last volatile variable\r
+ NonVolatileOffset The offset of last non-volatile variable\r
+ Instance Instance of the Firmware Volume.\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+ EFI_INVALID_PARAMETER - Invalid parameter\r
+ EFI_SUCCESS - Set successfully\r
+ EFI_OUT_OF_RESOURCES - Resource not enough to set variable\r
+ EFI_NOT_FOUND - Not found\r
+\r
+--*/\r
+{\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ EFI_STATUS Status;\r
+ VARIABLE_HEADER *NextVariable;\r
+ UINTN VarNameSize;\r
+ UINTN VarNameOffset;\r
+ UINTN VarDataOffset;\r
+ UINTN VarSize;\r
+ UINT8 State;\r
+ BOOLEAN Reclaimed;\r
+\r
+ Reclaimed = FALSE;\r
+\r
+ if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ Status = FindVariable (VariableName, VendorGuid, &Variable, Global);\r
+\r
+ if (Status == EFI_INVALID_PARAMETER) {\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
+\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ Variable.Volatile,\r
+ FALSE,\r
+ Instance,\r
+ (UINTN) &Variable.CurrPtr->State,\r
+ sizeof (UINT8),\r
+ &State\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+\r
+ Status = EFI_SUCCESS;\r
+ goto Done;\r
+ }\r
+\r
+ Status = EFI_NOT_FOUND;\r
+ goto Done;\r
+ } else {\r
+ if (!EFI_ERROR (Status)) {\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)\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
+ State = Variable.CurrPtr->State;\r
+ State &= VAR_IN_DELETED_TRANSITION;\r
+\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ Variable.Volatile,\r
+ FALSE,\r
+ Instance,\r
+ (UINTN) &Variable.CurrPtr->State,\r
+ sizeof (UINT8),\r
+ &State\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+ }\r
+ }\r
+ //\r
+ // Create a new variable and copy the data.\r
+ //\r
+ // Tricky part: Use scratch data area at the end of volatile variable store\r
+ // as a temporary storage.\r
+ //\r
+ NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) Global->VolatileVariableBase));\r
+\r
+ SetMem (NextVariable, SCRATCH_SIZE, 0xff);\r
+\r
+ NextVariable->StartId = VARIABLE_DATA;\r
+ NextVariable->Attributes = Attributes;\r
+ //\r
+ // NextVariable->State = VAR_ADDED;\r
+ //\r
+ NextVariable->Reserved = 0;\r
+ VarNameOffset = sizeof (VARIABLE_HEADER);\r
+ VarNameSize = StrSize (VariableName);\r
+ CopyMem (\r
+ (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r
+ VariableName,\r
+ VarNameSize\r
+ );\r
+ VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r
+ CopyMem (\r
+ (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r
+ Data,\r
+ DataSize\r
+ );\r
+ CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));\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
+ //\r
+ NextVariable->NameSize = (UINT32)VarNameSize;\r
+ NextVariable->DataSize = (UINT32)DataSize;\r
+\r
+ //\r
+ // The actual size of the variable that stores in storage should\r
+ // include pad size.\r
+ //\r
+ VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r
+ if (Attributes & EFI_VARIABLE_NON_VOLATILE) {\r
+ if ((UINT32) (VarSize +*NonVolatileOffset) >\r
+ ((VARIABLE_STORE_HEADER *) ((UINTN) (Global->NonVolatileVariableBase)))->Size\r
+ ) {\r
+ if (EfiAtRuntime ()) {\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
+ goto Done;\r
+ }\r
+ //\r
+ // If still no enough space, return out of resources\r
+ //\r
+ if ((UINT32) (VarSize +*NonVolatileOffset) >\r
+ ((VARIABLE_STORE_HEADER *) ((UINTN) (Global->NonVolatileVariableBase)))->Size\r
+ ) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
+ }\r
+\r
+ Reclaimed = TRUE;\r
+ }\r
+ //\r
+ // Three steps\r
+ // 1. Write variable header\r
+ // 2. Write variable data\r
+ // 3. Set variable state to valid\r
+ //\r
+ //\r
+ // Step 1:\r
+ //\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ FALSE,\r
+ TRUE,\r
+ Instance,\r
+ *NonVolatileOffset,\r
+ sizeof (VARIABLE_HEADER),\r
+ (UINT8 *) NextVariable\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+ //\r
+ // Step 2:\r
+ //\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ FALSE,\r
+ TRUE,\r
+ Instance,\r
+ *NonVolatileOffset + sizeof (VARIABLE_HEADER),\r
+ (UINT32) VarSize - sizeof (VARIABLE_HEADER),\r
+ (UINT8 *) NextVariable + sizeof (VARIABLE_HEADER)\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+ //\r
+ // Step 3:\r
+ //\r
+ NextVariable->State = VAR_ADDED;\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ FALSE,\r
+ TRUE,\r
+ Instance,\r
+ *NonVolatileOffset,\r
+ sizeof (VARIABLE_HEADER),\r
+ (UINT8 *) NextVariable\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+\r
+ *NonVolatileOffset = *NonVolatileOffset + VarSize;\r
+\r
+ } else {\r
+ if (EfiAtRuntime ()) {\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
+ }\r
+\r
+ if ((UINT32) (VarSize +*VolatileOffset) >\r
+ ((VARIABLE_STORE_HEADER *) ((UINTN) (Global->VolatileVariableBase)))->Size\r
+ ) {\r
+ //\r
+ // Perform garbage collection & reclaim operation\r
+ //\r
+ Status = Reclaim (Global->VolatileVariableBase, VolatileOffset, TRUE);\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+ //\r
+ // If still no enough space, return out of resources\r
+ //\r
+ if ((UINT32) (VarSize +*VolatileOffset) >\r
+ ((VARIABLE_STORE_HEADER *) ((UINTN) (Global->VolatileVariableBase)))->Size\r
+ ) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto Done;\r
+ }\r
+\r
+ Reclaimed = TRUE;\r
+ }\r
+\r
+ NextVariable->State = VAR_ADDED;\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ TRUE,\r
+ TRUE,\r
+ Instance,\r
+ *VolatileOffset,\r
+ (UINT32) VarSize,\r
+ (UINT8 *) NextVariable\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+\r
+ *VolatileOffset = *VolatileOffset + VarSize;\r
+ }\r
+ //\r
+ // Mark the old variable as deleted\r
+ //\r
+ if (!Reclaimed && !EFI_ERROR (Status) && Variable.CurrPtr != NULL) {\r
+ State = Variable.CurrPtr->State;\r
+ State &= VAR_DELETED;\r
+\r
+ Status = UpdateVariableStore (\r
+ Global,\r
+ Variable.Volatile,\r
+ FALSE,\r
+ Instance,\r
+ (UINTN) &Variable.CurrPtr->State,\r
+ sizeof (UINT8),\r
+ &State\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto Done;\r
+ }\r
+ }\r
+ }\r
+\r
+ Status = EFI_SUCCESS;\r
+Done:\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return Status;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+QueryVariableInfo (\r
+ IN UINT32 Attributes,\r
+ OUT UINT64 *MaximumVariableStorageSize,\r
+ OUT UINT64 *RemainingVariableStorageSize,\r
+ OUT UINT64 *MaximumVariableSize,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ This code returns information about the EFI variables.\r
+\r
+Arguments:\r
+\r
+ Attributes Attributes bitmask to specify the type of variables\r
+ on which to return information.\r
+ MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
+ for the EFI variables associated with the attributes specified.\r
+ RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
+ for the EFI variables associated with the attributes specified.\r
+ MaximumVariableSize Pointer to the maximum size of the individual EFI variables\r
+ associated with the attributes specified.\r
+ Global Pointer to VARIABLE_GLOBAL structure.\r
+ Instance Instance of the Firmware Volume.\r
+\r
+Returns:\r
+\r
+ EFI STATUS\r
+ EFI_INVALID_PARAMETER - An invalid combination of attribute bits was supplied.\r
+ EFI_SUCCESS - Query successfully.\r
+ EFI_UNSUPPORTED - The attribute is not supported on this platform.\r
+\r
+--*/\r
+{\r
+ VARIABLE_HEADER *Variable;\r
+ VARIABLE_HEADER *NextVariable;\r
+ UINT64 VariableSize;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+\r
+ if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)) == 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)) {\r
+ //\r
+ // Make sure RT Attribute is set if we are in Runtime phase.\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
+ //\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
+ *RemainingVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r
+\r
+ //\r
+ // Let *MaximumVariableSize be MAX_VARIABLE_SIZE.\r
+ //\r
+ *MaximumVariableSize = MAX_VARIABLE_SIZE;\r
+\r
+ //\r
+ // Point to the starting address of the variables.\r
+ //\r
+ Variable = (VARIABLE_HEADER *) (VariableStoreHeader + 1);\r
+\r
+ //\r
+ // Now walk through the related variable store.\r
+ //\r
+ while (IsValidVariableHeader (Variable) && (Variable < GetEndPointer (VariableStoreHeader))) {\r
+ NextVariable = GetNextVariablePtr (Variable);\r
+ VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r
+\r
+ if (EfiAtRuntime ()) {\r
+ //\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
+ *RemainingVariableStorageSize -= VariableSize;\r
+ } else {\r
+ //\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
+ *RemainingVariableStorageSize -= VariableSize;\r
+ }\r
+ }\r
+\r
+ //\r
+ // Go to the next one\r
+ //\r
+ Variable = NextVariable;\r
+ }\r
+\r
+ ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VariableCommonInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ This function does common initialization for variable services\r
+\r
+Arguments:\r
+\r
+ ImageHandle - The firmware allocated handle for the EFI image.\r
+ SystemTable - A pointer to the EFI System Table.\r
+\r
+Returns:\r
+\r
+ Status code.\r
+\r
+ EFI_NOT_FOUND - Variable store area not found.\r
+ EFI_UNSUPPORTED - Currently only one non-volatile variable store is supported.\r
+ EFI_SUCCESS - Variable services successfully initialized.\r
+\r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
+ CHAR8 *CurrPtr;\r
+ VARIABLE_STORE_HEADER *VolatileVariableStore;\r
+ VARIABLE_STORE_HEADER *VariableStoreHeader;\r
+ VARIABLE_HEADER *NextVariable;\r
+ UINT32 Instance;\r
+ EFI_PHYSICAL_ADDRESS FvVolHdr;\r
+\r
+ UINT64 TempVariableStoreHeader;\r
+\r
+ EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;\r
+ EFI_FLASH_SUBAREA_ENTRY VariableStoreEntry;\r
+ UINT64 BaseAddress;\r
+ UINT64 Length;\r
+ UINTN Index;\r
+ UINT8 Data;\r
+\r
+ mVariableModuleGlobal = AllocateRuntimePool (sizeof (ESAL_VARIABLE_GLOBAL));\r
+ if (mVariableModuleGlobal == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ EfiInitializeLock(&mVariableModuleGlobal->VariableGlobal[Physical].VariableServicesLock, TPL_NOTIFY);\r
+\r
+ //\r
+ // Allocate memory for volatile variable store\r
+ //\r
+ VolatileVariableStore = AllocateRuntimePool (VARIABLE_STORE_SIZE + SCRATCH_SIZE);\r
+ if (VolatileVariableStore == NULL) {\r
+ FreePool (mVariableModuleGlobal);\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ SetMem (VolatileVariableStore, VARIABLE_STORE_SIZE + SCRATCH_SIZE, 0xff);\r
+\r
+ //\r
+ // Variable Specific Data\r
+ //\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
+ VolatileVariableStore->Size = VARIABLE_STORE_SIZE;\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
+ //\r
+\r
+ TempVariableStoreHeader = (UINT64) PcdGet32 (PcdFlashNvStorageVariableBase);\r
+ VariableStoreEntry.Base = TempVariableStoreHeader + \\r
+ (((EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) (TempVariableStoreHeader)) -> HeaderLength);\r
+ VariableStoreEntry.Length = (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 = VariableStoreEntry.Base & (~EFI_PAGE_MASK);\r
+ Length = VariableStoreEntry.Length + (VariableStoreEntry.Base - BaseAddress);\r
+ Length = (Length + EFI_PAGE_SIZE - 1) & (~EFI_PAGE_MASK);\r
+\r
+ Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdDescriptor);\r
+ if (EFI_ERROR (Status)) {\r
+ FreePool (mVariableModuleGlobal);\r
+ FreePool (VolatileVariableStore);\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ Status = gDS->SetMemorySpaceAttributes (\r
+ BaseAddress,\r
+ Length,\r
+ GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ FreePool (mVariableModuleGlobal);\r
+ FreePool (VolatileVariableStore);\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+ //\r
+ // Get address of non volatile variable store base\r
+ //\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase = VariableStoreEntry.Base;\r
+\r
+ //\r
+ // Check Integrity\r
+ //\r
+ //\r
+ // Find the Correct Instance of the FV Block Service.\r
+ //\r
+ Instance = 0;\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
+ mVariableModuleGlobal->FvbInstance = Instance;\r
+ break;\r
+ }\r
+\r
+ Instance++;\r
+ }\r
+\r
+ VariableStoreHeader = (VARIABLE_STORE_HEADER *) CurrPtr;\r
+ if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r
+ if (~VariableStoreHeader->Size == 0) {\r
+ Status = UpdateVariableStore (\r
+ &mVariableModuleGlobal->VariableGlobal[Physical],\r
+ FALSE,\r
+ FALSE,\r
+ mVariableModuleGlobal->FvbInstance,\r
+ (UINTN) &VariableStoreHeader->Size,\r
+ sizeof (UINT32),\r
+ (UINT8 *) &VariableStoreEntry.Length\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 == VariableStoreEntry.Length);\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ }\r
+\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase = (EFI_PHYSICAL_ADDRESS) ((UINTN) CurrPtr);\r
+ //\r
+ // Parse non-volatile variable data and get last variable offset\r
+ //\r
+ NextVariable = (VARIABLE_HEADER *) (CurrPtr + sizeof (VARIABLE_STORE_HEADER));\r
+ Status = EFI_SUCCESS;\r
+\r
+ while (IsValidVariableHeader (NextVariable)) {\r
+ NextVariable = GetNextVariablePtr (NextVariable);\r
+ }\r
+\r
+ mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) CurrPtr;\r
+\r
+ //\r
+ // Check if the free area is blow a threshold\r
+ //\r
+ if ((((VARIABLE_STORE_HEADER *)((UINTN) CurrPtr))->Size - mVariableModuleGlobal->NonVolatileLastVariableOffset) < VARIABLE_RECLAIM_THRESHOLD) {\r
+ Status = Reclaim (\r
+ mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
+ FALSE\r
+ );\r
+ }\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ FreePool (mVariableModuleGlobal);\r
+ FreePool (VolatileVariableStore);\r
+ return Status;\r
+ }\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[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->VariableGlobal[Physical].NonVolatileVariableBase,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
+ FALSE\r
+ );\r
+ break;\r
+ }\r
+ }\r
+ }\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ FreePool (mVariableModuleGlobal);\r
+ FreePool (VolatileVariableStore);\r
+ }\r
+\r
+ return Status;\r
+}\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ Variable.h\r
+\r
+Abstract:\r
+\r
+--*/\r
+\r
+#ifndef _VARIABLE_H\r
+#define _VARIABLE_H\r
+\r
+#include <PiDxe.h>\r
+#include <Protocol/VariableWrite.h>\r
+#include <Protocol/FaultTolerantWriteLite.h>\r
+#include <Protocol/FirmwareVolumeBlock.h>\r
+#include <Protocol/Variable.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/UefiDriverEntryPoint.h>\r
+#include <Library/DxeServicesTableLib.h>\r
+#include <Library/UefiRuntimeLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/FvbServiceLib.h>\r
+#include <Library/UefiBootServicesTableLib.h>\r
+#include <Library/UefiLib.h>\r
+#include <Library/BaseLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/HobLib.h>\r
+#include <Common/FlashMap.h>\r
+#include <Guid/FlashMapHob.h>\r
+\r
+//\r
+// BugBug: We need relcate the head file.\r
+//\r
+#include <Common/Variable.h>\r
+\r
+#define VARIABLE_RECLAIM_THRESHOLD (1024)\r
+\r
+#define VARIABLE_STORE_SIZE (64 * 1024)\r
+#define SCRATCH_SIZE (4 * 1024)\r
+\r
+//\r
+// Define GET_PAD_SIZE to optimize compiler\r
+//\r
+#if ((ALIGNMENT == 0) || (ALIGNMENT == 1))\r
+#define GET_PAD_SIZE(a) (0)\r
+#else\r
+#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))\r
+#endif\r
+\r
+#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))\r
+\r
+typedef enum {\r
+ Physical,\r
+ Virtual\r
+} VARIABLE_POINTER_TYPE;\r
+\r
+typedef struct {\r
+ VARIABLE_HEADER *CurrPtr;\r
+ VARIABLE_HEADER *EndPtr;\r
+ VARIABLE_HEADER *StartPtr;\r
+ BOOLEAN Volatile;\r
+} VARIABLE_POINTER_TRACK;\r
+\r
+typedef struct {\r
+ EFI_PHYSICAL_ADDRESS VolatileVariableBase;\r
+ EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;\r
+ EFI_LOCK VariableServicesLock;\r
+} VARIABLE_GLOBAL;\r
+\r
+typedef struct {\r
+ VARIABLE_GLOBAL VariableGlobal[2];\r
+ UINTN VolatileLastVariableOffset;\r
+ UINTN NonVolatileLastVariableOffset;\r
+ UINT32 FvbInstance;\r
+} ESAL_VARIABLE_GLOBAL;\r
+\r
+extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
+\r
+//\r
+// Functions\r
+//\r
+EFI_STATUS\r
+EFIAPI\r
+VariableCommonInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ );\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VariableServiceInitialize (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ );\r
+\r
+VOID\r
+EFIAPI\r
+VariableClassAddressChangeEvent (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
+ );\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+GetVariable (\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
+ IN UINT32 Instance\r
+ );\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+GetNextVariableName (\r
+ IN OUT UINTN *VariableNameSize,\r
+ IN OUT CHAR16 *VariableName,\r
+ IN OUT EFI_GUID *VendorGuid,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ );\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+SetVariable (\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
+ IN UINT32 Instance\r
+ );\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+QueryVariableInfo (\r
+ IN UINT32 Attributes,\r
+ OUT UINT64 *MaximumVariableStorageSize,\r
+ OUT UINT64 *RemainingVariableStorageSize,\r
+ OUT UINT64 *MaximumVariableSize,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINT32 Instance\r
+ );\r
+\r
+EFI_STATUS\r
+GetFvbHandleByAddress (\r
+ IN EFI_PHYSICAL_ADDRESS VariableStoreBase,\r
+ OUT EFI_HANDLE *FvbHandle\r
+ );\r
+\r
+EFI_STATUS\r
+FtwVariableSpace (\r
+ IN EFI_PHYSICAL_ADDRESS VariableBaseAddress,\r
+ IN UINT8 *Buffer,\r
+ IN UINTN BufferSize\r
+ );\r
+\r
+#endif\r
--- /dev/null
+<?xml version="1.0" encoding="UTF-8"?>\r
+<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">\r
+ <MsaHeader>\r
+ <ModuleName>Variable</ModuleName>\r
+ <ModuleType>DXE_RUNTIME_DRIVER</ModuleType>\r
+ <GuidValue>CBD2E4D5-7068-4FF5-B462-9822B4AD8D60</GuidValue>\r
+ <Version>1.0</Version>\r
+ <Abstract>Component description file for Variable module.</Abstract>\r
+ <Description>This module installs three EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName.</Description>\r
+ <Copyright>Copyright (c) 2006 - 2007, Intel Corporation</Copyright>\r
+ <License>All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.</License>\r
+ <Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>\r
+ </MsaHeader>\r
+ <ModuleDefinitions>\r
+ <SupportedArchitectures>IA32 X64</SupportedArchitectures>\r
+ <BinaryModule>false</BinaryModule>\r
+ <OutputFileBasename>Variable</OutputFileBasename>\r
+ </ModuleDefinitions>\r
+ <LibraryClassDefinitions>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>PcdLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiDriverEntryPoint</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>DxeServicesTableLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiRuntimeLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>DebugLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>BaseMemoryLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>EdkFvbServiceLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiBootServicesTableLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>UefiLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>BaseLib</Keyword>\r
+ </LibraryClass>\r
+ <LibraryClass Usage="ALWAYS_CONSUMED">\r
+ <Keyword>MemoryAllocationLib</Keyword>\r
+ </LibraryClass>\r
+ </LibraryClassDefinitions>\r
+ <SourceFiles>\r
+ <Filename>Variable.h</Filename>\r
+ <Filename>Variable.c</Filename>\r
+ <Filename>reclaim.h</Filename>\r
+ <Filename>reclaim.c</Filename>\r
+ <Filename>InitVariable.c</Filename>\r
+ <Filename>Variable.dxs</Filename>\r
+ </SourceFiles>\r
+ <PackageDependencies>\r
+ <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>\r
+ <Package PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d"/>\r
+ </PackageDependencies>\r
+ <Protocols>\r
+ <Protocol Usage="ALWAYS_PRODUCED">\r
+ <ProtocolCName>gEfiVariableArchProtocolGuid</ProtocolCName>\r
+ </Protocol>\r
+ <Protocol Usage="ALWAYS_PRODUCED">\r
+ <ProtocolCName>gEfiVariableWriteArchProtocolGuid</ProtocolCName>\r
+ </Protocol>\r
+ <Protocol Usage="SOMETIMES_CONSUMED">\r
+ <ProtocolCName>gEfiFaultTolerantWriteLiteProtocolGuid</ProtocolCName>\r
+ </Protocol>\r
+ <Protocol Usage="SOMETIMES_CONSUMED">\r
+ <ProtocolCName>gEfiFirmwareVolumeBlockProtocolGuid</ProtocolCName>\r
+ </Protocol>\r
+ </Protocols>\r
+ <Externs>\r
+ <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>\r
+ <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>\r
+ <Extern>\r
+ <ModuleEntryPoint>VariableServiceInitialize</ModuleEntryPoint>\r
+ </Extern>\r
+ <Extern>\r
+ <SetVirtualAddressMapCallBack>VariableClassAddressChangeEvent</SetVirtualAddressMapCallBack>\r
+ </Extern>\r
+ </Externs>\r
+ <PcdCoded>\r
+ <PcdEntry PcdItemType="DYNAMIC">\r
+ <C_Name>PcdFlashNvStorageVariableBase</C_Name>\r
+ <TokenSpaceGuidCName>gEfiGenericPlatformTokenSpaceGuid</TokenSpaceGuidCName>\r
+ <HelpText>The driver gets the Variable store base address from this PCD. This base address point to
+ an EFI_FIRMWARE_VOLUMN_HEADER struct.</HelpText>\r
+ </PcdEntry>\r
+ <PcdEntry PcdItemType="DYNAMIC">\r
+ <C_Name>PcdFlashNvStorageVariableSize</C_Name>\r
+ <TokenSpaceGuidCName>gEfiGenericPlatformTokenSpaceGuid</TokenSpaceGuidCName>\r
+ <HelpText>The driver gets the NvStorage Variable Size from this PCD.</HelpText>\r
+ </PcdEntry>\r
+ </PcdCoded>\r
+</ModuleSurfaceArea>
\ No newline at end of file
--- /dev/null
+#/** @file\r
+# Component description file for Variable module.\r
+#\r
+# This module installs three EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName.\r
+# Copyright (c) 2006 - 2007, Intel Corporation\r
+#\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
+# http://opensource.org/licenses/bsd-license.php\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
+\r
+[Defines]\r
+ INF_VERSION = 0x00010005\r
+ BASE_NAME = VariableRuntimeDxe\r
+ FILE_GUID = CBD2E4D5-7068-4FF5-B462-9822B4AD8D60\r
+ MODULE_TYPE = DXE_RUNTIME_DRIVER\r
+ VERSION_STRING = 1.0\r
+ EDK_RELEASE_VERSION = 0x00020000\r
+ EFI_SPECIFICATION_VERSION = 0x00020000\r
+\r
+ ENTRY_POINT = VariableServiceInitialize\r
+\r
+#\r
+# The following information is for reference only and not required by the build tools.\r
+#\r
+# VALID_ARCHITECTURES = IA32 X64\r
+#\r
+# VIRTUAL_ADDRESS_MAP_CALLBACK = VariableClassAddressChangeEvent\r
+#\r
+\r
+[Sources.common]\r
+ InitVariable.c\r
+ reclaim.c\r
+ Variable.c\r
+ Variable.h\r
+\r
+[Packages]\r
+ MdePkg/MdePkg.dec\r
+\r
+[LibraryClasses]\r
+ MemoryAllocationLib\r
+ BaseLib\r
+ UefiLib\r
+ UefiBootServicesTableLib\r
+ FvbServiceLib\r
+ BaseMemoryLib\r
+ DebugLib\r
+ UefiRuntimeLib\r
+ DxeServicesTableLib\r
+ UefiDriverEntryPoint\r
+ PcdLib\r
+ HobLib\r
+\r
+[Guids]\r
+ gEfiFlashMapHobGuid\r
+\r
+[Protocols]\r
+ gEfiFirmwareVolumeBlockProtocolGuid # PROTOCOL SOMETIMES_CONSUMED\r
+ gEfiFaultTolerantWriteLiteProtocolGuid # PROTOCOL SOMETIMES_CONSUMED\r
+ gEfiVariableWriteArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED\r
+ gEfiVariableArchProtocolGuid # PROTOCOL ALWAYS_PRODUCED\r
+\r
+[PcdsDynamic.common]\r
+ PcdFlashNvStorageVariableSize|gEfiMdeModulePkgTokenSpaceGuid\r
+ PcdFlashNvStorageVariableBase|gEfiMdeModulePkgTokenSpaceGuid\r
+\r
+[Depex]\r
+ gEfiFirmwareVolumeBlockProtocolGuid AND gEfiAlternateFvBlockGuid AND gEfiFaultTolerantWriteLiteProtocolGuid\r
+\r
--- /dev/null
+/*++\r
+\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
+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
+Module Name:\r
+\r
+ reclaim.c\r
+\r
+Abstract:\r
+\r
+ Handles non-volatile variable store garbage collection, using FTW\r
+ (Fault Tolerant Write) protocol.\r
+\r
+Revision History\r
+\r
+--*/\r
+\r
+\r
+#include <Variable.h>\r
+#include "Common/Variable.h"\r
+\r
+EFI_STATUS\r
+GetFvbHandleByAddress (\r
+ IN EFI_PHYSICAL_ADDRESS Address,\r
+ OUT EFI_HANDLE *FvbHandle\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
+\r
+ *FvbHandle = NULL;\r
+ //\r
+ // Locate all handles of Fvb protocol\r
+ //\r
+ Status = gBS->LocateHandleBuffer (\r
+ ByProtocol,\r
+ &gEfiFirmwareVolumeBlockProtocolGuid,\r
+ NULL,\r
+ &HandleCount,\r
+ &HandleBuffer\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ //\r
+ // Get the FVB to access variable store\r
+ //\r
+ for (Index = 0; Index < HandleCount; Index += 1) {\r
+ Status = gBS->HandleProtocol (\r
+ HandleBuffer[Index],\r
+ &gEfiFirmwareVolumeBlockProtocolGuid,\r
+ (VOID **) &Fvb\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ Status = EFI_NOT_FOUND;\r
+ break;\r
+ }\r
+ //\r
+ // Compare the address and select the right one\r
+ //\r
+ Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r
+ if (EFI_ERROR (Status)) {\r
+ continue;\r
+ }\r
+\r
+ FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r
+ if ((Address >= FvbBaseAddress) && (Address <= (FvbBaseAddress + FwVolHeader->FvLength))) {\r
+ *FvbHandle = HandleBuffer[Index];\r
+ Status = EFI_SUCCESS;\r
+ break;\r
+ }\r
+ }\r
+\r
+ FreePool (HandleBuffer);\r
+ return Status;\r
+}\r
+\r
+STATIC\r
+EFI_STATUS\r
+GetLbaAndOffsetByAddress (\r
+ IN EFI_PHYSICAL_ADDRESS Address,\r
+ OUT EFI_LBA *Lba,\r
+ OUT UINTN *Offset\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_HANDLE FvbHandle;\r
+ EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r
+ EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
+ EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
+ EFI_FV_BLOCK_MAP_ENTRY *FvbMapEntry;\r
+ UINT32 LbaIndex;\r
+\r
+ *Lba = (EFI_LBA) (-1);\r
+ *Offset = 0;\r
+\r
+ //\r
+ // Get the proper FVB\r
+ //\r
+ Status = GetFvbHandleByAddress (Address, &FvbHandle);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ Status = gBS->HandleProtocol (\r
+ FvbHandle,\r
+ &gEfiFirmwareVolumeBlockProtocolGuid,\r
+ (VOID **) &Fvb\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ //\r
+ // Get the Base Address of FV\r
+ //\r
+ Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r
+\r
+ //\r
+ // Get the (LBA, Offset) of Address\r
+ //\r
+ if ((Address >= FvbBaseAddress) && (Address <= (FvbBaseAddress + FwVolHeader->FvLength))) {\r
+ if ((FwVolHeader->FvLength) > (FwVolHeader->HeaderLength)) {\r
+ //\r
+ // BUGBUG: Assume one FV has one type of BlockLength\r
+ //\r
+ FvbMapEntry = &FwVolHeader->BlockMap[0];\r
+ for (LbaIndex = 1; LbaIndex <= FvbMapEntry->NumBlocks; LbaIndex += 1) {\r
+ if (Address < (FvbBaseAddress + FvbMapEntry->Length * LbaIndex)) {\r
+ //\r
+ // Found the (Lba, Offset)\r
+ //\r
+ *Lba = LbaIndex - 1;\r
+ *Offset = (UINTN) (Address - (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)));\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+ }\r
+ }\r
+\r
+ return EFI_ABORTED;\r
+}\r
+\r
+EFI_STATUS\r
+FtwVariableSpace (\r
+ IN EFI_PHYSICAL_ADDRESS VariableBase,\r
+ IN UINT8 *Buffer,\r
+ IN UINTN BufferSize\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+ Write a buffer to Variable space, in the working block.\r
+\r
+Arguments:\r
+ FvbHandle - Indicates a handle to FVB to access variable store\r
+ Buffer - Point to the input buffer\r
+ BufferSize - The number of bytes of the input Buffer\r
+\r
+Returns:\r
+ EFI_SUCCESS - The function completed successfully\r
+ EFI_ABORTED - The function could not complete successfully\r
+ EFI_NOT_FOUND - Locate FVB protocol by handle fails\r
+\r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_HANDLE FvbHandle;\r
+ EFI_FTW_LITE_PROTOCOL *FtwLiteProtocol;\r
+ EFI_LBA VarLba;\r
+ UINTN VarOffset;\r
+ UINT8 *FtwBuffer;\r
+ UINTN FtwBufferSize;\r
+\r
+ //\r
+ // Locate fault tolerant write protocol\r
+ //\r
+ Status = gBS->LocateProtocol (\r
+ &gEfiFaultTolerantWriteLiteProtocolGuid,\r
+ NULL,\r
+ (VOID **) &FtwLiteProtocol\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ //\r
+ // Locate Fvb handle by address\r
+ //\r
+ Status = GetFvbHandleByAddress (VariableBase, &FvbHandle);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ //\r
+ // Get LBA and Offset by address\r
+ //\r
+ Status = GetLbaAndOffsetByAddress (VariableBase, &VarLba, &VarOffset);\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_ABORTED;\r
+ }\r
+ //\r
+ // Prepare for the variable data\r
+ //\r
+ FtwBufferSize = ((VARIABLE_STORE_HEADER *) ((UINTN) VariableBase))->Size;\r
+ FtwBuffer = AllocateRuntimePool (FtwBufferSize);\r
+ if (FtwBuffer == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ SetMem (FtwBuffer, FtwBufferSize, (UINT8) 0xff);\r
+ CopyMem (FtwBuffer, Buffer, BufferSize);\r
+\r
+ //\r
+ // FTW write record\r
+ //\r
+ Status = FtwLiteProtocol->Write (\r
+ FtwLiteProtocol,\r
+ FvbHandle,\r
+ VarLba, // LBA\r
+ VarOffset, // Offset\r
+ &FtwBufferSize, // NumBytes,\r
+ FtwBuffer\r
+ );\r
+\r
+ FreePool (FtwBuffer);\r
+ return Status;\r
+}\r
$(WORKSPACE)/Nt32Pkg/BootModePei/BootModePei.inf\r
$(WORKSPACE)/Nt32Pkg/WinNtFlashMapPei/WinNtFlashMapPei.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/MemoryTest/BaseMemoryTestPei/BaseMemoryTestPei.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/VariablePei/VariablePei.inf\r
+ $(WORKSPACE)/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf\r
$(WORKSPACE)/Nt32Pkg/WinNtAutoScanPei/WinNtAutoScanPei.inf\r
$(WORKSPACE)/Nt32Pkg/WinNtFirmwareVolumePei/WinNtFirmwareVolumePei.inf\r
$(WORKSPACE)/Nt32Pkg/WinNtThunkPPIToProtocolPei/WinNtThunkPPIToProtocolPei.inf\r
$(WORKSPACE)/Nt32Pkg/MiscSubClassPlatformDxe/MiscSubClassPlatformDxe.inf\r
$(WORKSPACE)/Nt32Pkg/TimerDxe/TimerDxe.inf\r
$(WORKSPACE)/IntelFrameworkModulePkg/Universal/StatusCode/Dxe/DxeStatusCode.inf\r
- $(WORKSPACE)/MdeModulePkg/Universal/VariableRuntimeDxe/VariableRuntimeDxe.inf\r
+ $(WORKSPACE)/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/WatchDogTimerDxe/WatchDogTimer.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf\r
$(WORKSPACE)/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf\r
INF $(WORKSPACE)/Nt32Pkg/BootModePei/BootModePei.inf\r
INF $(WORKSPACE)/Nt32Pkg/WinNtFlashMapPei/WinNtFlashMapPei.inf\r
INF $(WORKSPACE)/MdeModulePkg/Universal/MemoryTest/BaseMemoryTestPei/BaseMemoryTestPei.inf\r
-INF $(WORKSPACE)/MdeModulePkg/Universal/VariablePei/VariablePei.inf\r
+INF $(WORKSPACE)/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf\r
INF $(WORKSPACE)/Nt32Pkg/WinNtAutoScanPei/WinNtAutoScanPei.inf\r
INF $(WORKSPACE)/Nt32Pkg/WinNtFirmwareVolumePei/WinNtFirmwareVolumePei.inf\r
INF $(WORKSPACE)/Nt32Pkg/WinNtThunkPPIToProtocolPei/WinNtThunkPPIToProtocolPei.inf\r
INF $(WORKSPACE)/Nt32Pkg/MiscSubClassPlatformDxe/MiscSubClassPlatformDxe.inf\r
INF $(WORKSPACE)/Nt32Pkg/TimerDxe/TimerDxe.inf\r
INF $(WORKSPACE)/IntelFrameworkModulePkg/Universal/StatusCode/Dxe/DxeStatusCode.inf\r
-INF $(WORKSPACE)/MdeModulePkg/Universal/VariableRuntimeDxe/VariableRuntimeDxe.inf\r
+INF $(WORKSPACE)/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf\r
INF $(WORKSPACE)/MdeModulePkg/Universal/WatchDogTimerDxe/WatchDogTimer.inf\r
INF $(WORKSPACE)/MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf\r
INF $(WORKSPACE)/MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf\r
projects / mirror_edk2.git / commitdiff