mirror of https://github.com/acidanthera/audk.git
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
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/*++
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Copyright (c) 2004, 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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VariableStore.h
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Abstract:
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Revision History
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--*/
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#ifndef _VARIABLE_STORE_H
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#define _VARIABLE_STORE_H
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//
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// The variable store protocol interface is specific to the reference
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// implementation. The initialization code adds variable store devices
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// to the system, and the FW connects to the devices to provide the
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// variable store interfaces through these devices.
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//
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//
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// Variable Store Device protocol
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//
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#define EFI_VARIABLE_STORE_PROTOCOL_GUID \
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{ 0xf088cd91, 0xa046, 0x11d2, 0x8e, 0x42, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b }
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EFI_FORWARD_DECLARATION (EFI_VARIABLE_STORE_PROTOCOL);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_CLEAR_STORE) (
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IN EFI_VARIABLE_STORE_PROTOCOL *This,
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IN OUT VOID *Scratch
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_READ_STORE) (
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IN EFI_VARIABLE_STORE_PROTOCOL *This,
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IN UINTN Offset,
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IN UINTN BufferSize,
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OUT VOID *Buffer
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_UPDATE_STORE) (
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IN EFI_VARIABLE_STORE_PROTOCOL *This,
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IN UINTN Offset,
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IN UINTN BufferSize,
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IN VOID *Buffer
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);
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typedef
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EFI_STATUS
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(EFIAPI *EFI_CLEANUP_STORE) (
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IN EFI_VARIABLE_STORE_PROTOCOL *This
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);
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typedef struct _EFI_VARIABLE_STORE_PROTOCOL {
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//
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// Number of banks and bank size
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//
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UINT32 Attributes;
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UINT32 BankSize;
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//
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// Functions to access the storage banks
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//
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EFI_CLEAR_STORE ClearStore;
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EFI_READ_STORE ReadStore;
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EFI_UPDATE_STORE UpdateStore;
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EFI_CLEANUP_STORE CleanupStore;
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} EFI_VARIABLE_STORE_PROTOCOL;
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//
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//
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// ClearStore() - A function to clear the requested storage bank. A cleared
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// bank contains all "on" bits.
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//
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// ReadStore() - Read data from the requested store.
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//
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// UpdateStore() - Updates data on the requested store. The FW will only
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// ever issue updates to clear bits in the store. Updates must
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// be performed in LSb to MSb order of the update buffer.
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//
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// CleanupStore() - Do garbage collection and reclaim operation.
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//
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extern EFI_GUID gEfiVariableStoreProtocolGuid;
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#endif // _VARIABLE_STORE_H
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