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Maurice Ma
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/** @file
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The variable data structures.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available under
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the terms and conditions of the BSD License that accompanies this distribution.
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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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**/
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#ifndef __VARIABLE_FORMAT_H__
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#define __VARIABLE_FORMAT_H__
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#define VARIABLE_STORE_SIZE FixedPcdGet32(PcdVariableStoreSize)
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#define VARIABLE_STORE_SIGNATURE SIGNATURE_32('V', 'A', 'R', 'S')
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#define VARIABLE_NAME_MAX_LEN 64
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///
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/// Variable data start flag.
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///
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#define VARIABLE_DATA 0xA5
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///
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/// Variable State flags.
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///
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#define VAR_HEADER_VALID 0x01
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#define VAR_DATA_VALID 0x02
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#define VAR_IN_MIGRATION 0x04
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#define VAR_DELETED 0x08
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///
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/// Variable Attribute combinations.
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///
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#define VAR_ATTR_READ_ONLY 0x10
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///
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/// Variable state macros
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///
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#define IS_HEADER_VALID(State) (((State) & VAR_HEADER_VALID) == 0)
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#define IS_DATA_VALID(State) (((State) & VAR_DATA_VALID) == 0)
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#define IS_IN_MIGRATION(State) (((State) & VAR_IN_MIGRATION) == 0)
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#define IS_DELETED(State) (((State) & VAR_DELETED) == 0)
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///
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/// Variable Store region header.
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///
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typedef struct {
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///
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/// Variable store region signature.
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///
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UINT32 Signature;
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///
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/// Size of entire variable store,
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/// including size of variable store header but not including the size of FvHeader.
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///
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UINT32 Size;
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///
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/// Variable region format state.
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///
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UINT8 Format;
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///
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/// Variable region healthy state.
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///
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UINT8 State;
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UINT8 Reserved[6];
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} VARIABLE_STORE_HEADER;
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///
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/// Single Variable Data Header Structure.
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///
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typedef struct {
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///
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/// Variable Data Start Flag.
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///
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UINT8 StartId;
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///
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/// Variable State defined above.
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///
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UINT8 State;
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///
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/// Size of the variable data.
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///
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UINT16 DataSize;
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} VARIABLE_HEADER;
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#endif
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