[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 - 2010, 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
///\r
/// The size of a 3 character ISO639 language code.\r
///\r
#define ISO_639_2_ENTRY_SIZE    3\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;\r
  CHAR8           *LangCodes;\r
  CHAR8           *PlatformLang;\r
  CHAR8           Lang[ISO_639_2_ENTRY_SIZE + 1];\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
1623ce4a	6	Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
e5eed7d3	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
8d3a5c82	40	\r
1623ce4a RN	41	///\r
	42	/// The size of a 3 character ISO639 language code.\r
	43	///\r
	44	#define ISO_639_2_ENTRY_SIZE 3\r
	45	\r
8d3a5c82	46	typedef enum {\r
	47	Physical,\r
	48	Virtual\r
	49	} VARIABLE_POINTER_TYPE;\r
	50	\r
	51	typedef struct {\r
	52	VARIABLE_HEADER *CurrPtr;\r
	53	VARIABLE_HEADER *EndPtr;\r
	54	VARIABLE_HEADER *StartPtr;\r
	55	BOOLEAN Volatile;\r
	56	} VARIABLE_POINTER_TRACK;\r
	57	\r
	58	typedef struct {\r
	59	EFI_PHYSICAL_ADDRESS VolatileVariableBase;\r
	60	EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;\r
	61	EFI_LOCK VariableServicesLock;\r
	62	} VARIABLE_GLOBAL;\r
	63	\r
	64	typedef struct {\r
	65	VARIABLE_GLOBAL VariableGlobal[2];\r
	66	UINTN VolatileLastVariableOffset;\r
	67	UINTN NonVolatileLastVariableOffset;\r
72399dae	68	UINTN CommonVariableTotalSize;\r
72399dae	69	UINTN HwErrVariableTotalSize;\r
1623ce4a RN	70	CHAR8 *PlatformLangCodes;\r
	71	CHAR8 *LangCodes;\r
	72	CHAR8 *PlatformLang;\r
	73	CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];\r
8d3a5c82	74	} ESAL_VARIABLE_GLOBAL;\r
8d3a5c82	75	\r
1794e506	76	///\r
	77	/// Don't use module globals after the SetVirtualAddress map is signaled\r
	78	///\r
8d3a5c82	79	extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;\r
8d3a5c82	80	\r
1794e506	81	/**\r
	82	Initializes variable store area for non-volatile and volatile variable.\r
	83	\r
	84	This function allocates and initializes memory space for global context of ESAL\r
	85	variable service and variable store area for non-volatile and volatile variable.\r
	86	\r
	87	@param ImageHandle The Image handle of this driver.\r
	88	@param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
	89	\r
	90	@retval EFI_SUCCESS Function successfully executed.\r
	91	@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
	92	\r
	93	**/\r
8d3a5c82	94	EFI_STATUS\r
	95	EFIAPI\r
	96	VariableCommonInitialize (\r
	97	IN EFI_HANDLE ImageHandle,\r
	98	IN EFI_SYSTEM_TABLE *SystemTable\r
ed66e1bc	99	);\r
8d3a5c82	100	\r
1794e506	101	/**\r
	102	Entry point of EmuVariable service module.\r
	103	\r
	104	This function is the entry point of EmuVariable service module.\r
	105	It registers all interfaces of Variable Services, initializes\r
	106	variable store for non-volatile and volatile variables, and registers\r
	107	notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
	108	\r
	109	@param ImageHandle The Image handle of this driver.\r
	110	@param SystemTable The pointer of EFI_SYSTEM_TABLE.\r
	111	\r
	112	@retval EFI_SUCCESS Variable service successfully initialized.\r
	113	\r
	114	**/\r
8d3a5c82	115	EFI_STATUS\r
	116	EFIAPI\r
	117	VariableServiceInitialize (\r
	118	IN EFI_HANDLE ImageHandle,\r
	119	IN EFI_SYSTEM_TABLE *SystemTable\r
ed66e1bc	120	);\r
8d3a5c82	121	\r
1794e506	122	/**\r
	123	Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r
	124	\r
	125	This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
	126	It convers pointer to new virtual address.\r
	127	\r
	128	@param Event Event whose notification function is being invoked.\r
	129	@param Context Pointer to the notification function's context.\r
	130	\r
	131	**/\r
8d3a5c82	132	VOID\r
	133	EFIAPI\r
	134	VariableClassAddressChangeEvent (\r
	135	IN EFI_EVENT Event,\r
	136	IN VOID *Context\r
ed66e1bc	137	);\r
8d3a5c82	138	\r
1794e506	139	/**\r
	140	This code finds variable in storage blocks (Volatile or Non-Volatile).\r
	141	\r
	142	@param VariableName A Null-terminated Unicode string that is the name of\r
	143	the vendor's variable.\r
	144	@param VendorGuid A unique identifier for the vendor.\r
	145	@param Attributes If not NULL, a pointer to the memory location to return the \r
	146	attributes bitmask for the variable.\r
	147	@param DataSize Size of Data found. If size is less than the\r
	148	data, this value contains the required size.\r
	149	@param Data On input, the size in bytes of the return Data buffer. \r
	150	On output, the size of data returned in Data.\r
	151	@param Global Pointer to VARIABLE_GLOBAL structure\r
1794e506	152	\r
	153	@retval EFI_SUCCESS The function completed successfully. \r
	154	@retval EFI_NOT_FOUND The variable was not found.\r
	155	@retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result. DataSize has \r
	156	been updated with the size needed to complete the request.\r
	157	@retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is NULL.\r
	158	\r
	159	**/\r
8d3a5c82	160	EFI_STATUS\r
8d3a5c82	161	EFIAPI\r
bd682470	162	EmuGetVariable (\r
8d3a5c82	163	IN CHAR16 *VariableName,\r
72399dae	164	IN EFI_GUID *VendorGuid,\r
8d3a5c82	165	OUT UINT32 *Attributes OPTIONAL,\r
	166	IN OUT UINTN *DataSize,\r
	167	OUT VOID *Data,\r
72399dae	168	IN VARIABLE_GLOBAL *Global\r
ed66e1bc	169	);\r
8d3a5c82	170	\r
1794e506	171	/**\r
	172	\r
	173	This code finds the next available variable.\r
	174	\r
	175	@param VariableNameSize Size of the variable.\r
	176	@param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().\r
	177	On output, returns the Null-terminated Unicode string of the current variable.\r
	178	@param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().\r
	179	On output, returns the VendorGuid of the current variable. \r
	180	@param Global Pointer to VARIABLE_GLOBAL structure.\r
1794e506	181	\r
	182	@retval EFI_SUCCESS The function completed successfully. \r
	183	@retval EFI_NOT_FOUND The next variable was not found.\r
	184	@retval EFI_BUFFER_TOO_SMALL VariableNameSize is too small for the result. \r
	185	VariableNameSize has been updated with the size needed to complete the request.\r
	186	@retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.\r
	187	\r
	188	**/\r
8d3a5c82	189	EFI_STATUS\r
8d3a5c82	190	EFIAPI\r
bd682470	191	EmuGetNextVariableName (\r
8d3a5c82	192	IN OUT UINTN *VariableNameSize,\r
	193	IN OUT CHAR16 *VariableName,\r
	194	IN OUT EFI_GUID *VendorGuid,\r
72399dae	195	IN VARIABLE_GLOBAL *Global\r
ed66e1bc	196	);\r
8d3a5c82	197	\r
1794e506	198	/**\r
	199	\r
	200	This code sets variable in storage blocks (Volatile or Non-Volatile).\r
	201	\r
	202	@param VariableName A Null-terminated Unicode string that is the name of the vendor's\r
	203	variable. Each VariableName is unique for each \r
	204	VendorGuid. VariableName must contain 1 or more \r
	205	Unicode characters. If VariableName is an empty Unicode \r
	206	string, then EFI_INVALID_PARAMETER is returned.\r
	207	@param VendorGuid A unique identifier for the vendor\r
	208	@param Attributes Attributes bitmask to set for the variable\r
	209	@param DataSize The size in bytes of the Data buffer. A size of zero causes the\r
	210	variable to be deleted.\r
	211	@param Data The contents for the variable\r
	212	@param Global Pointer to VARIABLE_GLOBAL structure\r
	213	@param VolatileOffset The offset of last volatile variable\r
	214	@param NonVolatileOffset The offset of last non-volatile variable\r
1794e506	215	\r
	216	@retval EFI_SUCCESS The firmware has successfully stored the variable and its data as \r
	217	defined by the Attributes.\r
	218	@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the \r
	219	DataSize exceeds the maximum allowed, or VariableName is an empty \r
	220	Unicode string, or VendorGuid is NULL.\r
	221	@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.\r
	222	@retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.\r
	223	@retval EFI_WRITE_PROTECTED The variable in question is read-only or cannot be deleted.\r
	224	@retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.\r
	225	\r
	226	**/\r
8d3a5c82	227	EFI_STATUS\r
8d3a5c82	228	EFIAPI\r
bd682470	229	EmuSetVariable (\r
8d3a5c82	230	IN CHAR16 *VariableName,\r
	231	IN EFI_GUID *VendorGuid,\r
	232	IN UINT32 Attributes,\r
	233	IN UINTN DataSize,\r
	234	IN VOID *Data,\r
	235	IN VARIABLE_GLOBAL *Global,\r
	236	IN UINTN *VolatileOffset,\r
72399dae	237	IN UINTN *NonVolatileOffset\r
ed66e1bc	238	);\r
8d3a5c82	239	\r
1794e506	240	/**\r
	241	\r
	242	This code returns information about the EFI variables.\r
	243	\r
	244	@param Attributes Attributes bitmask to specify the type of variables\r
	245	on which to return information.\r
	246	@param MaximumVariableStorageSize On output the maximum size of the storage space available for \r
	247	the EFI variables associated with the attributes specified. \r
	248	@param RemainingVariableStorageSize Returns the remaining size of the storage space available for EFI \r
	249	variables associated with the attributes specified.\r
	250	@param MaximumVariableSize Returns the maximum size of an individual EFI variable \r
	251	associated with the attributes specified.\r
	252	@param Global Pointer to VARIABLE_GLOBAL structure.\r
1794e506	253	\r
	254	@retval EFI_SUCCESS Valid answer returned.\r
	255	@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied\r
	256	@retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the \r
	257	MaximumVariableStorageSize, RemainingVariableStorageSize, \r
	258	MaximumVariableSize are undefined.\r
	259	\r
	260	**/\r
8d3a5c82	261	EFI_STATUS\r
8d3a5c82	262	EFIAPI\r
bd682470	263	EmuQueryVariableInfo (\r
8d3a5c82	264	IN UINT32 Attributes,\r
	265	OUT UINT64 *MaximumVariableStorageSize,\r
	266	OUT UINT64 *RemainingVariableStorageSize,\r
	267	OUT UINT64 *MaximumVariableSize,\r
72399dae	268	IN VARIABLE_GLOBAL *Global\r
ed66e1bc	269	);\r
8d3a5c82	270	\r
8d3a5c82	271	#endif\r