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/** @file
Copyright (c) 2006 - 2007, Intel Corporation
All rights reserved. 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.
**/
#ifndef _PEI_VARIABLE_H
#define _PEI_VARIABLE_H
#include <PiPei.h>
#include <Ppi/ReadOnlyVariable.h>
#include <Ppi/ReadOnlyVariable2.h>
#include <Library/DebugLib.h>
#include <Library/PeimEntryPoint.h>
#include <Library/HobLib.h>
#include <Library/PcdLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <VariableFormat.h>
//
// Define GET_PAD_SIZE to optimize compiler
//
#if ((ALIGNMENT == 0) || (ALIGNMENT == 1))
#define GET_PAD_SIZE(a) (0)
#else
#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))
#endif
#define HEADER_ALIGN(Header) (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))
typedef struct {
VARIABLE_HEADER *CurrPtr;
VARIABLE_HEADER *EndPtr;
VARIABLE_HEADER *StartPtr;
} VARIABLE_POINTER_TRACK;
#define VARIABLE_INDEX_TABLE_VOLUME 122
#define EFI_VARIABLE_INDEX_TABLE_GUID \
{ 0x8cfdb8c8, 0xd6b2, 0x40f3, { 0x8e, 0x97, 0x02, 0x30, 0x7c, 0xc9, 0x8b, 0x7c } }
typedef struct {
UINT16 Length;
UINT16 GoneThrough;
VARIABLE_HEADER *EndPtr;
VARIABLE_HEADER *StartPtr;
UINT16 Index[VARIABLE_INDEX_TABLE_VOLUME];
} VARIABLE_INDEX_TABLE;
//
// Functions
//
EFI_STATUS
EFIAPI
PeiGetVariable (
IN EFI_PEI_SERVICES **PeiServices,
IN CHAR16 *VariableName,
IN EFI_GUID * VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data
);
EFI_STATUS
EFIAPI
PeiGetVariable2 (
IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,
IN CONST CHAR16 *VariableName,
IN CONST EFI_GUID *VariableGuid,
OUT UINT32 *Attributes,
IN OUT UINTN *DataSize,
OUT VOID *Data
);
EFI_STATUS
EFIAPI
PeiGetNextVariableName2 (
IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,
IN OUT UINTN *VariableNameSize,
IN OUT CHAR16 *VariableName,
IN OUT EFI_GUID *VariableGuid
);
EFI_STATUS
EFIAPI
PeiGetNextVariableName (
IN EFI_PEI_SERVICES **PeiServices,
IN OUT UINTN *VariableNameSize,
IN OUT CHAR16 *VariableName,
IN OUT EFI_GUID *VendorGuid
);
/**
Get one variable by the index count.
@param IndexTable The pointer to variable index table.
@param Count The index count of variable in index table.
@return The pointer to variable header indexed by count.
**/
VARIABLE_HEADER *
GetVariableByIndex (
IN VARIABLE_INDEX_TABLE *IndexTable,
IN UINT32 Count
);
/**
Record Variable in VariableIndex HOB.
Record Variable in VariableIndex HOB and update the length of variable index table.
@param IndexTable The pointer to variable index table.
@param Variable The pointer to the variable that will be recorded.
@retval VOID
**/
VOID
VariableIndexTableUpdate (
IN OUT VARIABLE_INDEX_TABLE *IndexTable,
IN VARIABLE_HEADER *Variable
);
#endif // _PEI_VARIABLE_H
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