\r
if (Status == EFI_INVALID_PARAMETER) {\r
return Status;\r
- }\r
- //\r
- // The size of the VariableName, including the Unicode Null in bytes plus\r
- // the DataSize is limited to maximum size of MAX_VARIABLE_SIZE (1024) bytes.\r
- //\r
- else if (sizeof (VARIABLE_HEADER) + ArrayLength (VariableName) + DataSize > MAX_VARIABLE_SIZE) {\r
+ } 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
+ return EFI_WRITE_PROTECTED;\r
+ } else if (sizeof (VARIABLE_HEADER) + ArrayLength (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
return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Make sure if runtime bit is set, boot service bit is set also\r
- //\r
- else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS\r
- ) {\r
+ } else if (Attributes == EFI_VARIABLE_NON_VOLATILE) {\r
+ //\r
+ // Make sure not only EFI_VARIABLE_NON_VOLATILE is set \r
+ //\r
return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Runtime but Attribute is not Runtime\r
- //\r
- else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_RUNTIME_ACCESS)) {\r
+ } 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
return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Cannot set volatile variable in Runtime\r
- //\r
- else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_NON_VOLATILE)) {\r
+ } else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_RUNTIME_ACCESS)) {\r
+ //\r
+ // Runtime but Attribute is not Runtime\r
+ //\r
return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // Setting a data variable with no access, or zero DataSize attributes\r
- // specified causes it to be deleted.\r
- //\r
- else if (DataSize == 0 || Attributes == 0) {\r
+ } else if (EfiAtRuntime () && Attributes && !(Attributes & EFI_VARIABLE_NON_VOLATILE)) {\r
+ //\r
+ // Cannot set volatile variable in Runtime\r
+ //\r
+ return EFI_INVALID_PARAMETER;\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
return EFI_SUCCESS;\r
}\r
\r
+#if (EFI_SPECIFICATION_VERSION >= 0x00020000)\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
+ 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
+ return EFI_SUCCESS;\r
+}\r
+#endif\r
+\r
EFI_STATUS\r
EFIAPI\r
VariableCommonInitialize (\r
UINT32 Instance;\r
EFI_PHYSICAL_ADDRESS FvVolHdr;\r
\r
- EFI_FLASH_MAP_ENTRY_DATA *FlashMapEntryData;\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
- EFI_PEI_HOB_POINTERS GuidHob;\r
\r
Status = gBS->AllocatePool (\r
EfiRuntimeServicesData,\r
// Get non volatile varaible store\r
//\r
\r
- FlashMapEntryData = NULL;\r
-\r
- GuidHob.Raw = GetHobList ();\r
- while (NULL != (GuidHob.Raw = GetNextGuidHob (&gEfiFlashMapHobGuid, GuidHob.Raw))) {\r
- FlashMapEntryData = (EFI_FLASH_MAP_ENTRY_DATA *) GET_GUID_HOB_DATA (GuidHob.Guid);\r
-\r
- if (FlashMapEntryData->AreaType == EFI_FLASH_AREA_EFI_VARIABLES) {\r
- break;\r
- }\r
- GuidHob.Raw = GET_NEXT_HOB (GuidHob);\r
- }\r
-\r
- if (NULL == GuidHob.Raw || FlashMapEntryData == NULL) {\r
- gBS->FreePool (mVariableModuleGlobal);\r
- gBS->FreePool (VolatileVariableStore);\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- //\r
- // Currently only one non-volatile variable store is supported\r
- //\r
- if (FlashMapEntryData->NumEntries != 1) {\r
- gBS->FreePool (mVariableModuleGlobal);\r
- gBS->FreePool (VolatileVariableStore);\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- CopyMem (&VariableStoreEntry, &FlashMapEntryData->Entries[0], sizeof (VariableStoreEntry));\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
\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->VariableBase[Physical].NonVolatileVariableBase,\r
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
+ FALSE\r
+ );\r
+ }\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ gBS->FreePool (mVariableModuleGlobal);\r
+ gBS->FreePool (VolatileVariableStore);\r
+ return Status;\r
+ }\r
+\r
//\r
// Check if the free area is really free.\r
//\r
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