\r
#include "Variable.h"\r
\r
-//\r
-// Don't use module globals after the SetVirtualAddress map is signaled\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
+VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r
+\r
+/**\r
+ Acquires lock only at boot time. Simply returns at runtime.\r
+\r
+ This is a temperary function which will be removed when\r
+ EfiAcquireLock() in UefiLib can handle the call in UEFI\r
+ Runtimer driver in RT phase.\r
+ It calls EfiAcquireLock() at boot time, and simply returns\r
+ at runtime\r
+\r
+ @param Lock A pointer to the lock to acquire\r
+\r
+**/\r
VOID\r
AcquireLockOnlyAtBootTime (\r
IN EFI_LOCK *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
+/**\r
+ Releases lock only at boot time. Simply returns at runtime.\r
+\r
+ This is a temperary function which will be removed when\r
+ EfiReleaseLock() in UefiLib can handle the call in UEFI\r
+ Runtimer driver in RT phase.\r
+ It calls EfiReleaseLock() at boot time, and simply returns\r
+ at runtime\r
+\r
+ @param Lock A pointer to the lock to release\r
+\r
+**/\r
VOID\r
ReleaseLockOnlyAtBootTime (\r
IN EFI_LOCK *Lock\r
}\r
}\r
\r
-STATIC\r
-UINT8 *\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
+ Gets pointer to the variable data.\r
\r
-Arguments:\r
+ This function gets the pointer to the variable data according\r
+ to the input pointer to the variable header.\r
\r
- Variable Pointer to the Variable Header.\r
+ @param Variable Pointer to the variable header.\r
\r
-Returns:\r
+ @return Pointer to variable data\r
\r
- UINT8* Pointer to Variable Data\r
-\r
---*/\r
+**/\r
+UINT8 *\r
+GetVariableDataPtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
{\r
if (Variable->StartId != VARIABLE_DATA) {\r
return NULL;\r
return (UINT8 *) ((UINTN) GET_VARIABLE_NAME_PTR (Variable) + Variable->NameSize + GET_PAD_SIZE (Variable->NameSize));\r
}\r
\r
-STATIC\r
-VARIABLE_HEADER *\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
+ Gets pointer to header of the next variable.\r
\r
- Variable Pointer to the Variable Header.\r
+ This function gets the pointer to the next variable header according\r
+ to the input point to the variable header.\r
\r
-Returns:\r
+ @param Variable Pointer to header of the next variable\r
\r
- VARIABLE_HEADER* Pointer to next variable header.\r
+ @return Pointer to next variable header.\r
\r
---*/\r
+**/\r
+VARIABLE_HEADER *\r
+GetNextVariablePtr (\r
+ IN VARIABLE_HEADER *Variable\r
+ )\r
{\r
VARIABLE_HEADER *VarHeader;\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
+ (sizeof (VARIABLE_HEADER) + VarHeader->DataSize + VarHeader->NameSize) > FixedPcdGet32(PcdMaxVariableSize)\r
) {\r
return NULL;\r
}\r
return VarHeader;\r
}\r
\r
-STATIC\r
-VARIABLE_HEADER *\r
-GetEndPointer (\r
- IN VARIABLE_STORE_HEADER *VolHeader\r
- )\r
-/*++\r
+/**\r
+ Gets pointer to the end of the variable storage area.\r
\r
-Routine Description:\r
+ This function gets pointer to the end of the variable storage\r
+ area, according to the input variable store header.\r
\r
- This code gets the pointer to the last variable memory pointer byte\r
+ @param VolHeader Pointer to the variale store header\r
\r
-Arguments:\r
+ @return Pointer to the end of the variable storage area.\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
+VARIABLE_HEADER *\r
+GetEndPointer (\r
+ IN VARIABLE_STORE_HEADER *VolHeader\r
+ )\r
{\r
//\r
// The end of variable store\r
return (VARIABLE_HEADER *) ((UINTN) VolHeader + VolHeader->Size);\r
}\r
\r
-STATIC\r
-EFI_STATUS\r
-FindVariable (\r
+/**\r
+ Routine used to track statistical information about variable usage. \r
+ The data is stored in the EFI system table so it can be accessed later.\r
+ VariableInfo.efi can dump out the table. Only Boot Services variable \r
+ accesses are tracked by this code. The PcdVariableCollectStatistics\r
+ build flag controls if this feature is enabled. \r
+\r
+ A read that hits in the cache will have Read and Cache true for \r
+ the transaction. Data is allocated by this routine, but never\r
+ freed.\r
+\r
+ @param[in] VariableName Name of the Variable to track\r
+ @param[in] VendorGuid Guid of the Variable to track\r
+ @param[in] Volatile TRUE if volatile FALSE if non-volatile\r
+ @param[in] Read TRUE if GetVariable() was called\r
+ @param[in] Write TRUE if SetVariable() was called\r
+ @param[in] Delete TRUE if deleted via SetVariable()\r
+ @param[in] Cache TRUE for a cache hit.\r
+\r
+**/\r
+VOID\r
+UpdateVariableInfo (\r
IN CHAR16 *VariableName,\r
IN EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack,\r
- IN VARIABLE_GLOBAL *Global\r
+ IN BOOLEAN Volatile,\r
+ IN BOOLEAN Read,\r
+ IN BOOLEAN Write,\r
+ IN BOOLEAN Delete,\r
+ IN BOOLEAN Cache\r
)\r
-/*++\r
+{\r
+ VARIABLE_INFO_ENTRY *Entry;\r
+\r
+ if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r
+\r
+ if (EfiAtRuntime ()) {\r
+ // Don't collect statistics at runtime\r
+ return;\r
+ }\r
+\r
+ if (gVariableInfo == NULL) {\r
+ //\r
+ // on the first call allocate a entry and place a pointer to it in\r
+ // the EFI System Table\r
+ //\r
+ gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r
+ ASSERT (gVariableInfo != NULL);\r
+\r
+ CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);\r
+ gVariableInfo->Name = AllocatePool (StrLen (VariableName));\r
+ ASSERT (gVariableInfo->Name != NULL);\r
+ StrCpy (gVariableInfo->Name, VariableName);\r
+ gVariableInfo->Volatile = Volatile;\r
+\r
+ gBS->InstallConfigurationTable (&gEfiVariableGuid, gVariableInfo);\r
+ }\r
+\r
+ \r
+ for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {\r
+ if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {\r
+ if (StrCmp (VariableName, Entry->Name) == 0) {\r
+ if (Read) {\r
+ Entry->ReadCount++;\r
+ }\r
+ if (Write) {\r
+ Entry->WriteCount++;\r
+ }\r
+ if (Delete) {\r
+ Entry->DeleteCount++;\r
+ }\r
+ if (Cache) {\r
+ Entry->CacheCount++;\r
+ }\r
\r
-Routine Description:\r
+ return;\r
+ }\r
+ }\r
+\r
+ if (Entry->Next == NULL) {\r
+ //\r
+ // If the entry is not in the table add it.\r
+ // Next iteration of the loop will fill in the data\r
+ //\r
+ Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r
+ ASSERT (Entry->Next != NULL);\r
+\r
+ CopyGuid (&Entry->Next->VendorGuid, VendorGuid);\r
+ Entry->Next->Name = AllocatePool (StrLen (VariableName));\r
+ ASSERT (Entry->Next->Name != NULL);\r
+ StrCpy (Entry->Next->Name, VariableName);\r
+ Entry->Next->Volatile = Volatile;\r
+ }\r
\r
- This code finds variable in storage blocks (Volatile or Non-Volatile)\r
+ }\r
+ }\r
+}\r
\r
-Arguments:\r
+/**\r
+ Finds variable in storage blocks of volatile and non-volatile storage areas.\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
+ This code finds variable in storage blocks of volatile and non-volatile storage areas.\r
+ If VariableName is an empty string, then we just return the first\r
+ qualified variable without comparing VariableName and VendorGuid.\r
+ Otherwise, VariableName and VendorGuid are compared.\r
\r
-Returns:\r
+ @param VariableName Name of the variable to be found.\r
+ @param VendorGuid Vendor GUID to be found.\r
+ @param PtrTrack VARIABLE_POINTER_TRACK structure for output,\r
+ including the range searched and the target position.\r
+ @param Global Pointer to VARIABLE_GLOBAL structure, including\r
+ base of volatile variable storage area, base of\r
+ NV variable storage area, and a lock.\r
\r
- EFI STATUS\r
+ @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r
+ VendorGuid is NULL.\r
+ @retval EFI_SUCCESS Variable successfully found.\r
+ @retval EFI_NOT_FOUND Variable not found.\r
\r
---*/\r
+**/\r
+EFI_STATUS\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
VARIABLE_HEADER *Variable[2];\r
VARIABLE_STORE_HEADER *VariableStoreHeader[2];\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 (!(EfiAtRuntime () && ((Variable[Index]->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0))) {\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
+ if (CompareMem (VariableName, GET_VARIABLE_NAME_PTR (Variable[Index]), Variable[Index]->NameSize) == 0) {\r
PtrTrack->CurrPtr = Variable[Index];\r
PtrTrack->Volatile = (BOOLEAN) Index;\r
return EFI_SUCCESS;\r
return EFI_NOT_FOUND;\r
}\r
\r
+/**\r
+ This code finds variable in storage blocks (Volatile or Non-Volatile).\r
+ \r
+ @param VariableName A Null-terminated Unicode string that is the name of\r
+ the vendor's variable.\r
+ @param VendorGuid A unique identifier for the vendor.\r
+ @param Attributes If not NULL, a pointer to the memory location to return the \r
+ attributes bitmask for the variable.\r
+ @param DataSize Size of Data found. If size is less than the\r
+ data, this value contains the required size.\r
+ @param Data On input, the size in bytes of the return Data buffer. \r
+ On output, the size of data returned in Data.\r
+ @param Global Pointer to VARIABLE_GLOBAL structure\r
+ @param Instance Instance of the Firmware Volume.\r
+\r
+ @retval EFI_SUCCESS The function completed successfully. \r
+ @retval EFI_NOT_FOUND The variable was not found.\r
+ @retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result. DataSize has \r
+ been updated with the size needed to complete the request.\r
+ @retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is NULL.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
GetVariable (\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_INVALID_PARAMETER - Invalid parameter\r
- EFI_SUCCESS - Find the specified variable\r
- EFI_NOT_FOUND - Not found\r
- EFI_BUFFER_TO_SMALL - DataSize is too small for the result\r
-\r
-\r
---*/\r
{\r
VARIABLE_POINTER_TRACK Variable;\r
UINTN VarDataSize;\r
}\r
\r
*DataSize = VarDataSize;\r
+ UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r
Status = EFI_SUCCESS;\r
goto Done;\r
} else {\r
return Status;\r
}\r
\r
+/**\r
+\r
+ This code Finds the Next available variable.\r
+\r
+ @param VariableNameSize Size of the variable.\r
+ @param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().\r
+ On output, returns the Null-terminated Unicode string of the current variable.\r
+ @param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().\r
+ On output, returns the VendorGuid of the current variable. \r
+ @param Global Pointer to VARIABLE_GLOBAL structure.\r
+ @param Instance Instance of the Firmware Volume.\r
+\r
+ @retval EFI_SUCCESS The function completed successfully. \r
+ @retval EFI_NOT_FOUND The next variable was not found.\r
+ @retval EFI_BUFFER_TOO_SMALL VariableNameSize is too small for the result. \r
+ VariableNameSize has been updated with the size needed to complete the request.\r
+ @retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
GetNextVariableName (\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
// 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
+ if (!(EfiAtRuntime () && ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0))) {\r
VarNameSize = Variable.CurrPtr->NameSize;\r
if (VarNameSize <= *VariableNameSize) {\r
CopyMem (\r
\r
}\r
\r
+/**\r
+\r
+ This code sets variable in storage blocks (Volatile or Non-Volatile).\r
+\r
+ @param VariableName A Null-terminated Unicode string that is the name of the vendor's\r
+ variable. Each VariableName is unique for each \r
+ VendorGuid. VariableName must contain 1 or more \r
+ Unicode characters. If VariableName is an empty Unicode \r
+ string, then EFI_INVALID_PARAMETER is returned.\r
+ @param VendorGuid A unique identifier for the vendor\r
+ @param Attributes Attributes bitmask to set for the variable\r
+ @param DataSize The size in bytes of the Data buffer. A size of zero causes the\r
+ variable to be deleted.\r
+ @param Data The contents for the variable\r
+ @param Global Pointer to VARIABLE_GLOBAL structure\r
+ @param VolatileOffset The offset of last volatile variable\r
+ @param NonVolatileOffset The offset of last non-volatile variable\r
+ @param Instance Instance of the Firmware Volume.\r
+\r
+ @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as \r
+ defined by the Attributes.\r
+ @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the \r
+ DataSize exceeds the maximum allowed, or VariableName is an empty \r
+ Unicode string, or VendorGuid is NULL.\r
+ @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.\r
+ @retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.\r
+ @retval EFI_WRITE_PROTECTED The variable in question is read-only or cannot be deleted.\r
+ @retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
SetVariable (\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_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
- EFI_DEVICE_ERROR - Variable can not be saved due to hardware failure\r
- EFI_WRITE_PROTECTED - Variable is read-only\r
-\r
---*/\r
{\r
VARIABLE_POINTER_TRACK Variable;\r
EFI_STATUS 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_HARDWARE_ERROR_VARIABLE_SIZE (32K)\r
- // bytes for HwErrRec, and MAX_VARIABLE_SIZE (1024) bytes for the others.\r
+ // the DataSize is limited to maximum size of FixedPcdGet32(PcdMaxHardwareErrorVariableSize)\r
+ // bytes for HwErrRec, and FixedPcdGet32(PcdMaxVariableSize) bytes for the others.\r
//\r
if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- if ((DataSize > MAX_HARDWARE_ERROR_VARIABLE_SIZE) || \r
- (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > MAX_HARDWARE_ERROR_VARIABLE_SIZE)) {\r
+ if ((DataSize > FixedPcdGet32(PcdMaxHardwareErrorVariableSize)) || \r
+ (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > FixedPcdGet32(PcdMaxHardwareErrorVariableSize))) {\r
return EFI_INVALID_PARAMETER;\r
} \r
} else {\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
+ // the DataSize is limited to maximum size of FixedPcdGet32(PcdMaxVariableSize) bytes.\r
//\r
- if ((DataSize > MAX_VARIABLE_SIZE) ||\r
- (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > MAX_VARIABLE_SIZE)) {\r
+ if ((DataSize > FixedPcdGet32(PcdMaxVariableSize)) ||\r
+ (sizeof (VARIABLE_HEADER) + StrSize (VariableName) + DataSize > FixedPcdGet32(PcdMaxVariableSize))) {\r
return EFI_INVALID_PARAMETER;\r
} \r
} \r
//\r
// Only variable have NV attribute can be updated/deleted in Runtime\r
//\r
- if (!(Variable.CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE)) {\r
+ if ((Variable.CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
Status = EFI_INVALID_PARAMETER;\r
goto Done;\r
}\r
//\r
if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r
Variable.CurrPtr->State &= VAR_DELETED;\r
+ UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, FALSE, FALSE, TRUE, FALSE);\r
Status = EFI_SUCCESS;\r
goto Done;\r
}\r
// then return to the caller immediately.\r
//\r
if (Variable.CurrPtr->DataSize == DataSize &&\r
- !CompareMem (Data, GetVariableDataPtr (Variable.CurrPtr), DataSize)\r
+ CompareMem (Data, GetVariableDataPtr (Variable.CurrPtr), DataSize) == 0\r
) {\r
Status = EFI_SUCCESS;\r
goto Done;\r
// Only variable have NV|RT attribute can be created in Runtime\r
//\r
if (EfiAtRuntime () &&\r
- (!(Attributes & EFI_VARIABLE_RUNTIME_ACCESS) || !(Attributes & EFI_VARIABLE_NON_VOLATILE))) {\r
+ (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r
Status = EFI_INVALID_PARAMETER;\r
goto Done;\r
} \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 ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
if ((UINT32) (VarSize +*NonVolatileOffset) >\r
((VARIABLE_STORE_HEADER *) ((UINTN) (Global->NonVolatileVariableBase)))->Size\r
) {\r
Variable.CurrPtr->State &= VAR_DELETED;\r
}\r
\r
+ UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, FALSE, TRUE, FALSE, FALSE);\r
+\r
Status = EFI_SUCCESS;\r
Done:\r
ReleaseLockOnlyAtBootTime (&Global->VariableServicesLock);\r
return Status;\r
}\r
\r
+/**\r
+\r
+ This code returns information about the EFI variables.\r
+\r
+ @param Attributes Attributes bitmask to specify the type of variables\r
+ on which to return information.\r
+ @param MaximumVariableStorageSize On output the maximum size of the storage space available for \r
+ the EFI variables associated with the attributes specified. \r
+ @param RemainingVariableStorageSize Returns the remaining size of the storage space available for EFI \r
+ variables associated with the attributes specified.\r
+ @param MaximumVariableSize Returns the maximum size of an individual EFI variable \r
+ associated with the attributes specified.\r
+ @param Global Pointer to VARIABLE_GLOBAL structure.\r
+ @param Instance Instance of the Firmware Volume.\r
+\r
+ @retval EFI_SUCCESS Valid answer returned.\r
+ @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied\r
+ @retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the \r
+ MaximumVariableStorageSize, RemainingVariableStorageSize, \r
+ MaximumVariableSize are undefined.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
QueryVariableInfo (\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 EFI variables associated with the attributes specified.\r
- MaximumVariableSize Pointer to the maximum size of an 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
// 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
+ } else if (EfiAtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r
//\r
// Make sure RT Attribute is set if we are in Runtime phase.\r
//\r
*RemainingVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r
\r
//\r
- // Let *MaximumVariableSize be MAX_VARIABLE_SIZE with the exception of the variable header size.\r
+ // Let *MaximumVariableSize be FixedPcdGet32(PcdMaxVariableSize) with the exception of the variable header size.\r
//\r
- *MaximumVariableSize = MAX_VARIABLE_SIZE - sizeof (VARIABLE_HEADER);\r
+ *MaximumVariableSize = FixedPcdGet32(PcdMaxVariableSize) - sizeof (VARIABLE_HEADER);\r
\r
//\r
// Harware error record variable needs larger size.\r
//\r
if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- *MaximumVariableSize = MAX_HARDWARE_ERROR_VARIABLE_SIZE - sizeof (VARIABLE_HEADER);\r
+ *MaximumVariableSize = FixedPcdGet32(PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r
}\r
\r
//\r
return EFI_SUCCESS;\r
}\r
\r
-STATIC\r
+/**\r
+ Initializes variable store area.\r
+\r
+ This function allocates memory space for variable store area and initializes its attributes.\r
+\r
+ @param VariableBase Base of the variable store area created\r
+ @param LastVariableOffset Size of VARIABLE_STORE_HEADER\r
+\r
+**/\r
EFI_STATUS\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
// Allocate memory for volatile variable store\r
//\r
VariableStore = (VARIABLE_STORE_HEADER *) AllocateRuntimePool (\r
- VARIABLE_STORE_SIZE\r
+ FixedPcdGet32(PcdVariableStoreSize)\r
);\r
if (NULL == VariableStore) {\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
- SetMem (VariableStore, VARIABLE_STORE_SIZE, 0xff);\r
+ SetMem (VariableStore, FixedPcdGet32(PcdVariableStoreSize), 0xff);\r
\r
//\r
// Variable Specific Data\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
+ CopyGuid (&VariableStore->Signature, &gEfiVariableGuid);\r
+ VariableStore->Size = FixedPcdGet32(PcdVariableStoreSize);\r
VariableStore->Format = VARIABLE_STORE_FORMATTED;\r
VariableStore->State = VARIABLE_STORE_HEALTHY;\r
VariableStore->Reserved = 0;\r
return EFI_SUCCESS;\r
}\r
\r
+/**\r
+ Initializes variable store area for non-volatile and volatile variable.\r
+\r
+ This function allocates and initializes memory space for global context of ESAL\r
+ variable service and variable store area for non-volatile and volatile variable.\r
+\r
+ @param ImageHandle The Image handle of this driver.\r
+ @param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
+\r
+ @retval EFI_SUCCESS Function successfully executed.\r
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\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
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