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-rw-r--r--DuetPkg/FSVariable/VariableStorage.h118
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diff --git a/DuetPkg/FSVariable/VariableStorage.h b/DuetPkg/FSVariable/VariableStorage.h
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--- a/DuetPkg/FSVariable/VariableStorage.h
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-/*++
-
-Caution: This file is used for Duet platform only, do not use them in real platform.
-All variable code, variable metadata, and variable data used by Duet platform are on
-disk. They can be changed by user. BIOS is not able to protoect those.
-Duet trusts all meta data from disk. If variable code, variable metadata and variable
-data is modified in inproper way, the behavior is undefined.
-
-Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
-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:
-
- VariableStorage.h
-
-Abstract:
-
- handles variable store/reads with memory and file
-
-Revision History
-
---*/
-#ifndef _VARIABLE_STORAGE_H_
-#define _VARIABLE_STORAGE_H_
-
-#define VAR_DEFAULT_VALUE (0xff)
-#define VAR_DEFAULT_VALUE_16 SIGNATURE_16 (VAR_DEFAULT_VALUE, VAR_DEFAULT_VALUE)
-#define VAR_DEFAULT_VALUE_32 SIGNATURE_32 (VAR_DEFAULT_VALUE, VAR_DEFAULT_VALUE, \
- VAR_DEFAULT_VALUE, VAR_DEFAULT_VALUE)
-
-typedef struct _VARIABLE_STORAGE VARIABLE_STORAGE;
-
-EFI_STATUS
-FileStorageConstructor (
- OUT VARIABLE_STORAGE **VarStore,
- OUT EFI_EVENT_NOTIFY *GoVirtualEvent,
- IN EFI_PHYSICAL_ADDRESS NvStorageBase,
- IN UINTN Size,
- IN UINT32 VolumeId,
- IN CHAR16 *FilePath
- );
-
-EFI_STATUS
-MemStorageConstructor (
- OUT VARIABLE_STORAGE **VarStore,
- OUT EFI_EVENT_NOTIFY *GoVirtualEvent,
- IN UINTN Size
- );
-
-typedef
-EFI_STATUS
-(EFIAPI *ERASE_STORE) (
- IN VARIABLE_STORAGE *This
- );
-
-typedef
-EFI_STATUS
-(EFIAPI *WRITE_STORE) (
- IN VARIABLE_STORAGE *This,
- IN UINTN Offset,
- IN UINTN BufferSize,
- IN VOID *Buffer
- );
-
-struct _VARIABLE_STORAGE {
-
- //
- // Functions to access the storage
- //
- ERASE_STORE Erase;
- WRITE_STORE Write;
-};
-
-typedef struct _VS_FILE_INFO {
- UINT8 *FileData; // local buffer for reading acceleration
-
- EFI_DEVICE_PATH_PROTOCOL *DevicePath; // device having storage file
- UINT32 VolumeId;
- CHAR16 FilePath[256];
-} VS_FILE_INFO;
-
-typedef struct _VS_MEM_INFO {
- UINT8 *MemData;
-} VS_MEM_INFO;
-
-typedef struct _VS_DEV {
- UINT32 Signature;
- VARIABLE_STORAGE VarStore;
- UINTN Size;
-
- union {
- //
- // finally visit FileInfo.FileData or MemInfo.MemData
- //
- UINT8 *Data;
-
- VS_FILE_INFO FileInfo;
- VS_MEM_INFO MemInfo;
- } Info;
-
-} VS_DEV;
-
-#define VS_DEV_SIGNATURE SIGNATURE_32 ('$', 'V', 'S', 'D')
-#define DEV_FROM_THIS(a) CR (a, VS_DEV, VarStore, VS_DEV_SIGNATURE)
-
-#define VAR_DATA_PTR(a) ((a)->Info.Data)
-#define VAR_FILE_DEVICEPATH(a) ((a)->Info.FileInfo.DevicePath)
-#define VAR_FILE_VOLUMEID(a) ((a)->Info.FileInfo.VolumeId)
-#define VAR_FILE_FILEPATH(a) ((a)->Info.FileInfo.FilePath)
-
-
-#endif