mirror of https://github.com/acidanthera/audk.git
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
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/** @file
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Variable worker functions.
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Copyright (c) 2006, Intel Corporation<BR>
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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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**/
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//
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// The package level header files this module uses
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//
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#include <PiPei.h>
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//
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// The protocols, PPI and GUID defintions for this module
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//
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#include <Ppi/ReadOnlyVariable.h>
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//
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// The Library classes this module consumes
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//
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#include <Library/DebugLib.h>
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#include <Library/PeimEntryPoint.h>
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#include <Library/HobLib.h>
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#include <Library/PcdLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Variable.h>
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/**
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Get one variable by the index count.
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@param IndexTable The pointer to variable index table.
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@param Count The index count of variable in index table.
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@return The pointer to variable header indexed by count.
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**/
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VARIABLE_HEADER *
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GetVariableByIndex (
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IN VARIABLE_INDEX_TABLE *IndexTable,
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IN UINT32 Count
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)
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{
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return (VARIABLE_HEADER *) (UINTN) ((((UINT32)IndexTable->Index[Count]) << 2) + ((UINT32)(UINTN)IndexTable->StartPtr & 0xFFFC0000) );
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}
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/**
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Record Variable in VariableIndex HOB.
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Record Variable in VariableIndex HOB and update the length of variable index table.
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@param IndexTable The pointer to variable index table.
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@param Variable The pointer to the variable that will be recorded.
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@retval VOID
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**/
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VOID
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VariableIndexTableUpdate (
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IN OUT VARIABLE_INDEX_TABLE *IndexTable,
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IN VARIABLE_HEADER *Variable
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)
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{
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IndexTable->Index[IndexTable->Length++] = (UINT16) (((UINT32)(UINTN) Variable) >> 2);
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return;
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}
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