audk/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h

/** @file

  The internal header file includes the common header files, defines
  internal structure and functions used by RuntimeVariable module.

Copyright (c) 2006 - 2008, 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.

**/

#ifndef _VARIABLE_H
#define _VARIABLE_H

#include <PiDxe.h>
#include <Protocol/VariableWrite.h>
#include <Protocol/FaultTolerantWriteLite.h>
#include <Protocol/FirmwareVolumeBlock.h>
#include <Protocol/Variable.h>
#include <Library/PcdLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/UefiRuntimeLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/FvbServiceLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Guid/VariableInfo.h>
#include <Guid/GlobalVariable.h>
#include <VariableFormat.h>



#define VARIABLE_RECLAIM_THRESHOLD (1024)

#define VARIABLE_STORE_SIZE FixedPcdGet32(PcdVariableStoreSize)
#define SCRATCH_SIZE        FixedPcdGet32(PcdMaxVariableSize)

//
// Define GET_PAD_SIZE to optimize compiler
//
#if ((ALIGNMENT == 0) || (ALIGNMENT == 1))
#define GET_PAD_SIZE(a) (0)
#else
#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))
#endif

#define HEADER_ALIGN(Header)  (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))


typedef struct {
  VARIABLE_HEADER *CurrPtr;
  VARIABLE_HEADER *EndPtr;
  VARIABLE_HEADER *StartPtr;
  BOOLEAN         Volatile;
} VARIABLE_POINTER_TRACK;

typedef struct {
  EFI_PHYSICAL_ADDRESS  VolatileVariableBase;
  EFI_PHYSICAL_ADDRESS  NonVolatileVariableBase;
  EFI_LOCK              VariableServicesLock;
  UINT32                ReentrantState;
} VARIABLE_GLOBAL;

typedef struct {
  VARIABLE_GLOBAL VariableGlobal;
  UINTN           VolatileLastVariableOffset;
  UINTN           NonVolatileLastVariableOffset;
  UINT32          FvbInstance;
} VARIABLE_MODULE_GLOBAL;

typedef struct {
  EFI_GUID    *Guid;
  CHAR16      *Name;
  UINT32      Attributes;
  UINTN       DataSize;
  VOID        *Data;
} VARIABLE_CACHE_ENTRY;


//
// Functions
//

EFI_STATUS
EFIAPI
VariableServiceInitialize (
  IN EFI_HANDLE         ImageHandle,
  IN EFI_SYSTEM_TABLE   *SystemTable
  );


EFI_STATUS
FtwVariableSpace (
  IN EFI_PHYSICAL_ADDRESS   VariableBaseAddress,
  IN UINT8                  *Buffer,
  IN UINTN                  BufferSize
  );

#endif