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/*++
Copyright (c) 2006 - 2007, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
FSVariable.h
Abstract:
--*/
#ifndef _FS_VARIABLE_H
#define _FS_VARIABLE_H
//
// Statements that include other header files
//
#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/HobLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/DevicePathLib.h>
#include <Guid/HobList.h>
#include <Guid/FlashMapHob.h>
#include <Protocol/Variable.h>
#include <Protocol/VariableWrite.h>
#include <Protocol/SimpleFileSystem.h>
#include <Protocol/BlockIo.h>
#include "EfiFlashMap.h"
#include "VariableFormat.h"
#include "VariableStorage.h"
#define VOLATILE_VARIABLE_STORE_SIZE (64 * 1024)
#define VARIABLE_SCRATCH_SIZE (4 * 1024)
#define VARIABLE_RECLAIM_THRESHOLD (1024)
#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))
typedef enum {
Physical,
Virtual
} VARIABLE_POINTER_TYPE;
typedef enum {
NonVolatile,
Volatile,
MaxType
} VARIABLE_STORAGE_TYPE;
typedef struct {
VARIABLE_HEADER *CurrPtr;
VARIABLE_HEADER *EndPtr;
VARIABLE_HEADER *StartPtr;
VARIABLE_STORAGE_TYPE Type;
} VARIABLE_POINTER_TRACK;
#define VARIABLE_MEMBER_OFFSET(Member, StartOffset) \
( sizeof (VARIABLE_STORE_HEADER) + (StartOffset) + \
(UINTN) ((UINT8 *) &((VARIABLE_HEADER*) 0)->Member - (UINT8 *) &((VARIABLE_HEADER*) 0)->StartId) \
)
typedef struct {
EFI_EVENT_NOTIFY GoVirtualChildEvent[MaxType];
VARIABLE_STORAGE *VariableStore[MaxType]; // Instance of VariableStorage
VOID *VariableBase[MaxType]; // Start address of variable storage
UINTN LastVariableOffset[MaxType]; // The position to write new variable to (index from VariableBase)
VOID *Scratch; // Buffer used during reclaim
} VARIABLE_GLOBAL;
//
// Functions
//
EFI_STATUS
EFIAPI
VariableServiceInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
VOID
EFIAPI
VariableClassAddressChangeEvent (
IN EFI_EVENT Event,
IN VOID *Context
);
EFI_STATUS
EFIAPI
GetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data
);
EFI_STATUS
EFIAPI
GetNextVariableName (
IN OUT UINTN *VariableNameSize,
IN OUT CHAR16 *VariableName,
IN OUT EFI_GUID *VendorGuid
);
EFI_STATUS
EFIAPI
SetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN UINT32 Attributes,
IN UINTN DataSize,
IN VOID *Data
);
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
EFI_STATUS
EFIAPI
QueryVariableInfo (
IN UINT32 Attributes,
OUT UINT64 *MaximumVariableStorageSize,
OUT UINT64 *RemainingVariableStorageSize,
OUT UINT64 *MaximumVariableSize
);
#endif // EFI_SPECIFICATION_VERSION >= 0x00020000
#endif
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