mirror of https://github.com/acidanthera/audk.git
163 lines
4.3 KiB
C
163 lines
4.3 KiB
C
/*++
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Copyright (c) 2006 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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FSVariable.h
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Abstract:
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--*/
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#ifndef _FS_VARIABLE_H
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#define _FS_VARIABLE_H
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//
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// Statements that include other header files
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//
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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/PcdLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiLib.h>
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#include <Library/HobLib.h>
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#include <Library/DxeServicesTableLib.h>
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#include <Library/DevicePathLib.h>
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#include <Guid/HobList.h>
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#include <Guid/FlashMapHob.h>
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#include <Protocol/Variable.h>
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#include <Protocol/VariableWrite.h>
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#include <Protocol/SimpleFileSystem.h>
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#include <Protocol/BlockIo.h>
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#include "EfiFlashMap.h"
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#include "VariableFormat.h"
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#include "VariableStorage.h"
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#define VOLATILE_VARIABLE_STORE_SIZE (64 * 1024)
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#define VARIABLE_SCRATCH_SIZE (4 * 1024)
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#define VARIABLE_RECLAIM_THRESHOLD (1024)
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//
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// Define GET_PAD_SIZE to optimize compiler
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//
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#if ((ALIGNMENT == 0) || (ALIGNMENT == 1))
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#define GET_PAD_SIZE(a) (0)
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#else
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#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))
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#endif
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#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))
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typedef enum {
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Physical,
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Virtual
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} VARIABLE_POINTER_TYPE;
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typedef enum {
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NonVolatile,
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Volatile,
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MaxType
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} VARIABLE_STORAGE_TYPE;
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typedef struct {
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VARIABLE_HEADER *CurrPtr;
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VARIABLE_HEADER *EndPtr;
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VARIABLE_HEADER *StartPtr;
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VARIABLE_STORAGE_TYPE Type;
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} VARIABLE_POINTER_TRACK;
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#define VARIABLE_MEMBER_OFFSET(Member, StartOffset) \
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( sizeof (VARIABLE_STORE_HEADER) + (StartOffset) + \
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(UINTN) ((UINT8 *) &((VARIABLE_HEADER*) 0)->Member - (UINT8 *) &((VARIABLE_HEADER*) 0)->StartId) \
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)
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typedef struct {
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EFI_EVENT_NOTIFY GoVirtualChildEvent[MaxType];
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VARIABLE_STORAGE *VariableStore[MaxType]; // Instance of VariableStorage
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VOID *VariableBase[MaxType]; // Start address of variable storage
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UINTN LastVariableOffset[MaxType]; // The position to write new variable to (index from VariableBase)
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VOID *Scratch; // Buffer used during reclaim
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} VARIABLE_GLOBAL;
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//
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// Functions
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//
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EFI_STATUS
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EFIAPI
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VariableServiceInitialize (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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;
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VOID
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EFIAPI
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VariableClassAddressChangeEvent (
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IN EFI_EVENT Event,
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IN VOID *Context
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)
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;
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EFI_STATUS
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EFIAPI
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GetVariable (
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IN CHAR16 *VariableName,
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IN EFI_GUID *VendorGuid,
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OUT UINT32 *Attributes OPTIONAL,
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IN OUT UINTN *DataSize,
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OUT VOID *Data
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)
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;
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EFI_STATUS
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EFIAPI
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GetNextVariableName (
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IN OUT UINTN *VariableNameSize,
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IN OUT CHAR16 *VariableName,
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IN OUT EFI_GUID *VendorGuid
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)
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;
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EFI_STATUS
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EFIAPI
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SetVariable (
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IN CHAR16 *VariableName,
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IN EFI_GUID *VendorGuid,
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IN UINT32 Attributes,
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IN UINTN DataSize,
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IN VOID *Data
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)
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;
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#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
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EFI_STATUS
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EFIAPI
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QueryVariableInfo (
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IN UINT32 Attributes,
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OUT UINT64 *MaximumVariableStorageSize,
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OUT UINT64 *RemainingVariableStorageSize,
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OUT UINT64 *MaximumVariableSize
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)
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;
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#endif // EFI_SPECIFICATION_VERSION >= 0x00020000
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#endif
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