[mirror_edk2.git] / MdeModulePkg / Universal / Variable / EmuRuntimeDxe / Variable.h

/** @file\r
\r
  The internal header file includes the common header files, defines\r
  internal structure and functions used by EmuVariable module.\r
\r
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
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
#ifndef _VARIABLE_H_\r
#define _VARIABLE_H_\r
\r
#include <Uefi.h>\r
\r
#include <Protocol/VariableWrite.h>\r
#include <Protocol/Variable.h>\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
#include <Library/PcdLib.h>\r
#include <Guid/VariableFormat.h>\r
#include <Guid/GlobalVariable.h>\r
\r
#include <Guid/EventGroup.h>\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
  UINTN           CommonVariableTotalSize;\r
  UINTN           HwErrVariableTotalSize;\r
  CHAR8           PlatformLangCodes[256]; //Pre-allocate 256 bytes space to accommodate the PlatformlangCodes.\r
  CHAR8           LangCodes[256]; //Pre-allocate 256 bytes space to accommodate the langCodes.\r
  CHAR8           PlatformLang[8]; //Pre-allocate 8 bytes space to accommodate the Platformlang variable.\r
  CHAR8           Lang[4]; //Pre-allocate 4 bytes space to accommodate the lang variable.\r
} ESAL_VARIABLE_GLOBAL;\r
\r
///\r
/// Don't use module globals after the SetVirtualAddress map is signaled\r
///\r
extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\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
  Entry point of EmuVariable service module.\r
\r
  This function is the entry point of EmuVariable service module.\r
  It registers all interfaces of Variable Services, initializes\r
  variable store for non-volatile and volatile variables, and registers\r
  notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
\r
  @param  ImageHandle   The Image handle of this driver.\r
  @param  SystemTable   The pointer of EFI_SYSTEM_TABLE.\r
\r
  @retval EFI_SUCCESS   Variable service successfully initialized.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
VariableServiceInitialize (\r
  IN EFI_HANDLE         ImageHandle,\r
  IN EFI_SYSTEM_TABLE   *SystemTable\r
  );\r
\r
/**\r
  Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r
\r
  This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
  It convers pointer to new virtual address.\r
\r
  @param  Event        Event whose notification function is being invoked.\r
  @param  Context      Pointer to the notification function's context.\r
\r
**/\r
VOID\r
EFIAPI\r
VariableClassAddressChangeEvent (\r
  IN EFI_EVENT        Event,\r
  IN VOID             *Context\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
\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
EmuGetVariable (\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
  );\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
\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
EmuGetNextVariableName (\r
  IN OUT  UINTN             *VariableNameSize,\r
  IN OUT  CHAR16            *VariableName,\r
  IN OUT  EFI_GUID          *VendorGuid,\r
  IN      VARIABLE_GLOBAL   *Global\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
\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
EmuSetVariable (\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
  );\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
\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
EmuQueryVariableInfo (\r
  IN  UINT32                 Attributes,\r
  OUT UINT64                 *MaximumVariableStorageSize,\r
  OUT UINT64                 *RemainingVariableStorageSize,\r
  OUT UINT64                 *MaximumVariableSize,\r
  IN  VARIABLE_GLOBAL        *Global\r
  );\r
\r
#endif\r
Commit	Line	Data
504214c4	1	/** @file\r
8d3a5c82	2	\r
504214c4 LG	3	The internal header file includes the common header files, defines\r
	4	internal structure and functions used by EmuVariable module.\r
	5	\r
e5eed7d3 HT	6	Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
e5eed7d3 HT	7	This program and the accompanying materials\r
8d3a5c82	8	are licensed and made available under the terms and conditions of the BSD License\r
	9	which accompanies this distribution. The full text of the license may be found at\r
	10	http://opensource.org/licenses/bsd-license.php\r
	11	\r
	12	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	13	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	14	\r
504214c4	15	**/\r
8d3a5c82	16	\r
1794e506	17	#ifndef _VARIABLE_H_\r
1794e506	18	#define _VARIABLE_H_\r
ed7748fe	19	\r
60c93673	20	#include <Uefi.h>\r
ed7748fe	21	\r
8d3a5c82	22	#include <Protocol/VariableWrite.h>\r
8d3a5c82	23	#include <Protocol/Variable.h>\r
ed7748fe	24	\r
8d3a5c82	25	#include <Library/BaseMemoryLib.h>\r
	26	#include <Library/MemoryAllocationLib.h>\r
	27	#include <Library/DebugLib.h>\r
	28	#include <Library/UefiRuntimeLib.h>\r
	29	#include <Library/UefiDriverEntryPoint.h>\r
	30	#include <Library/UefiBootServicesTableLib.h>\r
	31	#include <Library/UefiLib.h>\r
	32	#include <Library/BaseLib.h>\r
518d395c	33	#include <Library/PcdLib.h>\r
3709c4cd	34	#include <Guid/VariableFormat.h>\r
72399dae	35	#include <Guid/GlobalVariable.h>\r
8d3a5c82	36	\r
01a5c994	37	#include <Guid/EventGroup.h>\r
01a5c994	38	\r
8d3a5c82	39	#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))\r
	40	\r
	41	typedef enum {\r
	42	Physical,\r
	43	Virtual\r
	44	} VARIABLE_POINTER_TYPE;\r
	45	\r
	46	typedef struct {\r
	47	VARIABLE_HEADER *CurrPtr;\r
	48	VARIABLE_HEADER *EndPtr;\r
	49	VARIABLE_HEADER *StartPtr;\r
	50	BOOLEAN Volatile;\r
	51	} VARIABLE_POINTER_TRACK;\r
	52	\r
	53	typedef struct {\r
	54	EFI_PHYSICAL_ADDRESS VolatileVariableBase;\r
	55	EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;\r
	56	EFI_LOCK VariableServicesLock;\r
	57	} VARIABLE_GLOBAL;\r
	58	\r
	59	typedef struct {\r
	60	VARIABLE_GLOBAL VariableGlobal[2];\r
	61	UINTN VolatileLastVariableOffset;\r
	62	UINTN NonVolatileLastVariableOffset;\r
72399dae	63	UINTN CommonVariableTotalSize;\r
	64	UINTN HwErrVariableTotalSize;\r
	65	CHAR8 PlatformLangCodes[256]; //Pre-allocate 256 bytes space to accommodate the PlatformlangCodes.\r
	66	CHAR8 LangCodes[256]; //Pre-allocate 256 bytes space to accommodate the langCodes.\r
	67	CHAR8 PlatformLang[8]; //Pre-allocate 8 bytes space to accommodate the Platformlang variable.\r
	68	CHAR8 Lang[4]; //Pre-allocate 4 bytes space to accommodate the lang variable.\r
8d3a5c82	69	} ESAL_VARIABLE_GLOBAL;\r
8d3a5c82	70	\r
1794e506	71	///\r
	72	/// Don't use module globals after the SetVirtualAddress map is signaled\r
	73	///\r
8d3a5c82	74	extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
8d3a5c82	75	\r
1794e506	76	/**\r
	77	Initializes variable store area for non-volatile and volatile variable.\r
	78	\r
	79	This function allocates and initializes memory space for global context of ESAL\r
	80	variable service and variable store area for non-volatile and volatile variable.\r
	81	\r
	82	@param ImageHandle The Image handle of this driver.\r
	83	@param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
	84	\r
	85	@retval EFI_SUCCESS Function successfully executed.\r
	86	@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
	87	\r
	88	**/\r
8d3a5c82	89	EFI_STATUS\r
	90	EFIAPI\r
	91	VariableCommonInitialize (\r
	92	IN EFI_HANDLE ImageHandle,\r
	93	IN EFI_SYSTEM_TABLE *SystemTable\r
ed66e1bc	94	);\r
8d3a5c82	95	\r
1794e506	96	/**\r
	97	Entry point of EmuVariable service module.\r
	98	\r
	99	This function is the entry point of EmuVariable service module.\r
	100	It registers all interfaces of Variable Services, initializes\r
	101	variable store for non-volatile and volatile variables, and registers\r
	102	notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
	103	\r
	104	@param ImageHandle The Image handle of this driver.\r
	105	@param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
	106	\r
	107	@retval EFI_SUCCESS Variable service successfully initialized.\r
	108	\r
	109	**/\r
8d3a5c82	110	EFI_STATUS\r
	111	EFIAPI\r
	112	VariableServiceInitialize (\r
	113	IN EFI_HANDLE ImageHandle,\r
	114	IN EFI_SYSTEM_TABLE *SystemTable\r
ed66e1bc	115	);\r
8d3a5c82	116	\r
1794e506	117	/**\r
	118	Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r
	119	\r
	120	This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
	121	It convers pointer to new virtual address.\r
	122	\r
	123	@param Event Event whose notification function is being invoked.\r
	124	@param Context Pointer to the notification function's context.\r
	125	\r
	126	**/\r
8d3a5c82	127	VOID\r
	128	EFIAPI\r
	129	VariableClassAddressChangeEvent (\r
	130	IN EFI_EVENT Event,\r
	131	IN VOID *Context\r
ed66e1bc	132	);\r
8d3a5c82	133	\r
1794e506	134	/**\r
	135	This code finds variable in storage blocks (Volatile or Non-Volatile).\r
	136	\r
	137	@param VariableName A Null-terminated Unicode string that is the name of\r
	138	the vendor's variable.\r
	139	@param VendorGuid A unique identifier for the vendor.\r
	140	@param Attributes If not NULL, a pointer to the memory location to return the \r
	141	attributes bitmask for the variable.\r
	142	@param DataSize Size of Data found. If size is less than the\r
	143	data, this value contains the required size.\r
	144	@param Data On input, the size in bytes of the return Data buffer. \r
	145	On output, the size of data returned in Data.\r
	146	@param Global Pointer to VARIABLE_GLOBAL structure\r
1794e506	147	\r
	148	@retval EFI_SUCCESS The function completed successfully. \r
	149	@retval EFI_NOT_FOUND The variable was not found.\r
	150	@retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result. DataSize has \r
	151	been updated with the size needed to complete the request.\r
	152	@retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is NULL.\r
	153	\r
	154	**/\r
8d3a5c82	155	EFI_STATUS\r
8d3a5c82	156	EFIAPI\r
bd682470	157	EmuGetVariable (\r
8d3a5c82	158	IN CHAR16 *VariableName,\r
72399dae	159	IN EFI_GUID *VendorGuid,\r
8d3a5c82	160	OUT UINT32 *Attributes OPTIONAL,\r
	161	IN OUT UINTN *DataSize,\r
	162	OUT VOID *Data,\r
72399dae	163	IN VARIABLE_GLOBAL *Global\r
ed66e1bc	164	);\r
8d3a5c82	165	\r
1794e506	166	/**\r
	167	\r
	168	This code finds the next available variable.\r
	169	\r
	170	@param VariableNameSize Size of the variable.\r
	171	@param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().\r
	172	On output, returns the Null-terminated Unicode string of the current variable.\r
	173	@param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().\r
	174	On output, returns the VendorGuid of the current variable. \r
	175	@param Global Pointer to VARIABLE_GLOBAL structure.\r
1794e506	176	\r
	177	@retval EFI_SUCCESS The function completed successfully. \r
	178	@retval EFI_NOT_FOUND The next variable was not found.\r
	179	@retval EFI_BUFFER_TOO_SMALL VariableNameSize is too small for the result. \r
	180	VariableNameSize has been updated with the size needed to complete the request.\r
	181	@retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.\r
	182	\r
	183	**/\r
8d3a5c82	184	EFI_STATUS\r
8d3a5c82	185	EFIAPI\r
bd682470	186	EmuGetNextVariableName (\r
8d3a5c82	187	IN OUT UINTN *VariableNameSize,\r
	188	IN OUT CHAR16 *VariableName,\r
	189	IN OUT EFI_GUID *VendorGuid,\r
72399dae	190	IN VARIABLE_GLOBAL *Global\r
ed66e1bc	191	);\r
8d3a5c82	192	\r
1794e506	193	/**\r
	194	\r
	195	This code sets variable in storage blocks (Volatile or Non-Volatile).\r
	196	\r
	197	@param VariableName A Null-terminated Unicode string that is the name of the vendor's\r
	198	variable. Each VariableName is unique for each \r
	199	VendorGuid. VariableName must contain 1 or more \r
	200	Unicode characters. If VariableName is an empty Unicode \r
	201	string, then EFI_INVALID_PARAMETER is returned.\r
	202	@param VendorGuid A unique identifier for the vendor\r
	203	@param Attributes Attributes bitmask to set for the variable\r
	204	@param DataSize The size in bytes of the Data buffer. A size of zero causes the\r
	205	variable to be deleted.\r
	206	@param Data The contents for the variable\r
	207	@param Global Pointer to VARIABLE_GLOBAL structure\r
	208	@param VolatileOffset The offset of last volatile variable\r
	209	@param NonVolatileOffset The offset of last non-volatile variable\r
1794e506	210	\r
	211	@retval EFI_SUCCESS The firmware has successfully stored the variable and its data as \r
	212	defined by the Attributes.\r
	213	@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the \r
	214	DataSize exceeds the maximum allowed, or VariableName is an empty \r
	215	Unicode string, or VendorGuid is NULL.\r
	216	@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.\r
	217	@retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.\r
	218	@retval EFI_WRITE_PROTECTED The variable in question is read-only or cannot be deleted.\r
	219	@retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.\r
	220	\r
	221	**/\r
8d3a5c82	222	EFI_STATUS\r
8d3a5c82	223	EFIAPI\r
bd682470	224	EmuSetVariable (\r
8d3a5c82	225	IN CHAR16 *VariableName,\r
	226	IN EFI_GUID *VendorGuid,\r
	227	IN UINT32 Attributes,\r
	228	IN UINTN DataSize,\r
	229	IN VOID *Data,\r
	230	IN VARIABLE_GLOBAL *Global,\r
	231	IN UINTN *VolatileOffset,\r
72399dae	232	IN UINTN *NonVolatileOffset\r
ed66e1bc	233	);\r
8d3a5c82	234	\r
1794e506	235	/**\r
	236	\r
	237	This code returns information about the EFI variables.\r
	238	\r
	239	@param Attributes Attributes bitmask to specify the type of variables\r
	240	on which to return information.\r
	241	@param MaximumVariableStorageSize On output the maximum size of the storage space available for \r
	242	the EFI variables associated with the attributes specified. \r
	243	@param RemainingVariableStorageSize Returns the remaining size of the storage space available for EFI \r
	244	variables associated with the attributes specified.\r
	245	@param MaximumVariableSize Returns the maximum size of an individual EFI variable \r
	246	associated with the attributes specified.\r
	247	@param Global Pointer to VARIABLE_GLOBAL structure.\r
1794e506	248	\r
	249	@retval EFI_SUCCESS Valid answer returned.\r
	250	@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied\r
	251	@retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the \r
	252	MaximumVariableStorageSize, RemainingVariableStorageSize, \r
	253	MaximumVariableSize are undefined.\r
	254	\r
	255	**/\r
8d3a5c82	256	EFI_STATUS\r
8d3a5c82	257	EFIAPI\r
bd682470	258	EmuQueryVariableInfo (\r
8d3a5c82	259	IN UINT32 Attributes,\r
	260	OUT UINT64 *MaximumVariableStorageSize,\r
	261	OUT UINT64 *RemainingVariableStorageSize,\r
	262	OUT UINT64 *MaximumVariableSize,\r
72399dae	263	IN VARIABLE_GLOBAL *Global\r
ed66e1bc	264	);\r
8d3a5c82	265	\r
8d3a5c82	266	#endif\r