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
projects / mirror_edk2.git / blobdiff