]>
git.proxmox.com Git - mirror_edk2.git/blob - DuetPkg/FSVariable/MemStorage.c
3 Copyright (c) 2006 - 2007, Intel Corporation
4 All rights reserved. This program and the accompanying materials
5 are licensed and made available under the terms and conditions of the BSD License
6 which accompanies this distribution. The full text of the license may be found at
7 http://opensource.org/licenses/bsd-license.php
9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 handles variable store/reads with emulated memory
23 #include "FSVariable.h"
28 OnVirtualAddressChange (
37 IN VARIABLE_STORAGE
*This
44 IN VARIABLE_STORAGE
*This
,
51 MemStorageConstructor (
52 OUT VARIABLE_STORAGE
**VarStore
,
53 OUT EFI_EVENT_NOTIFY
*GoVirtualEvent
,
60 Status
= gBS
->AllocatePool (EfiRuntimeServicesData
, sizeof(VS_DEV
), &Dev
);
61 ASSERT_EFI_ERROR (Status
);
63 ZeroMem (Dev
, sizeof(VS_DEV
));
65 Dev
->Signature
= VARIABLE_STORE_SIGNATURE
;
68 Dev
->VarStore
.Erase
= MemEraseStore
;
69 Dev
->VarStore
.Write
= MemWriteStore
;
71 Status
= gBS
->AllocatePool (EfiRuntimeServicesData
, Size
, &VAR_DATA_PTR (Dev
));
72 ASSERT_EFI_ERROR (Status
);
74 DEBUG ((EFI_D_ERROR
, "VStorage: Size = 0x%x\n", Size
));
76 *VarStore
= &Dev
->VarStore
;
77 *GoVirtualEvent
= OnVirtualAddressChange
;
85 OnVirtualAddressChange (
92 Dev
= DEV_FROM_THIS (Context
);
94 EfiConvertPointer (0, &VAR_DATA_PTR (Dev
));
95 EfiConvertPointer (0, (VOID
**)&Dev
->VarStore
.Erase
);
96 EfiConvertPointer (0, (VOID
**)&Dev
->VarStore
.Write
);
103 IN VARIABLE_STORAGE
*This
108 Dev
= DEV_FROM_THIS(This
);
109 SetMem (VAR_DATA_PTR (Dev
), Dev
->Size
, VAR_DEFAULT_VALUE
);
118 IN VARIABLE_STORAGE
*This
,
126 Dev
= DEV_FROM_THIS(This
);
128 ASSERT (Offset
+ BufferSize
< Dev
->Size
);
130 // For better performance
131 if (VAR_DATA_PTR (Dev
) + Offset
!= UserBuffer
) {
132 CopyMem (VAR_DATA_PTR (Dev
) + Offset
, UserBuffer
, BufferSize
);