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//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/BIN/Modules/ACPI/Template/S3Support/S3Restore/AcpiPeiS3Func.c 2 7/19/11 11:34a Oleksiyy $
//
// $Revision: 2 $
//
// $Date: 7/19/11 11:34a $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/BIN/Modules/ACPI/Template/S3Support/S3Restore/AcpiPeiS3Func.c $
//
// 2 7/19/11 11:34a Oleksiyy
// [TAG] EIP64108
// [Category] Improvement
// [Description] ACPI, convert or update all eModules to be compliant
// with PI 1.2, and UEFI 2.3.1 specifications.
// [Files] AcpiCore.c, mptable.c, AcpiS3Save.c, S3Resume.dxs,
// S3Resume.c, AcpiPeiS3Func.c, BootScriptExecuter.c and DxeIpl.c
//
// 1 2/03/11 4:09p Oleksiyy
// [TAG] EIP53402
// [Category] Improvement
// [Description] Create new label of ACPI with separate S3 Functionality
// [Files] S3Restore.cif
// S3Restore.sdl
// S3Restore.mak
// S3Resume.dxs
// AcpiS3Wake.asm
// S3Resume.c
// AcpiPeiS3Func.c
// AcpiPeiS3Func.h
// BootScriptExecuter.c
//
// 7 3/26/09 4:51p Oleksiyy
// New ACPI Core implementation - improves logic, execution time and
// memory usage of ACPI module.
//
// 6 4/29/08 4:38p Felixp
// Bug fix in GetAcpiS3Info: Initialize AcpiVariableSet variable with NULL
// to make sure there is no junk in the high 4 bytes in x64 mode.
//
// 5 4/15/08 9:15p Yakovlevs
// Functions Headers added
//<AMI_FHDR_START>
//----------------------------------------------------------------------------
//
// Name: AcpiPeiS3Func.c
//
// Description: ACPI S3 PEI support functions
//
//----------------------------------------------------------------------------
//<AMI_FHDR_END>
#include <EFI.h>
#include <Pei.h>
#include <Ppi\ReadOnlyVariable2.h>
#include <AmiPeiLib.h>
#include "AcpiS3.h"
CHAR16 gAcpiGlobalVariable[] = ACPI_GLOBAL_VARIABLE;
EFI_GUID gEfiAcpiVariableGuid = EFI_ACPI_VARIABLE_GUID;
extern EFI_GUID gEfiPeiReadOnlyVariable2PpiGuid;
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: GetAcpiS3Info
//
// Description:
// This function reads ACPI_VARIABLE_SET data from NVRAM and returns pointer to it
//
// Input:
// IN EFI_PEI_SERVICES **PeiServices - pointer to pointer to PEI services
//
// Output:
// ACPI_VARIABLE_SET* - pointer to ACPI_VARIABLE_SET structure (NULL if error occured)
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
ACPI_VARIABLE_SET * GetAcpiS3Info(
IN EFI_PEI_SERVICES **PeiServices
)
{
EFI_PEI_READ_ONLY_VARIABLE2_PPI *ReadOnlyVariable;
ACPI_VARIABLE_SET *AcpiVariableSet = NULL;
UINTN VariableSize = sizeof(ACPI_VARIABLE_SET*);
EFI_STATUS Status;
Status = (*PeiServices)->LocatePpi(
PeiServices,
&gEfiPeiReadOnlyVariable2PpiGuid,
0,
NULL,
&ReadOnlyVariable
);
ASSERT_PEI_ERROR(PeiServices, Status);
Status = ReadOnlyVariable->GetVariable(
ReadOnlyVariable,
gAcpiGlobalVariable,
&gEfiAcpiVariableGuid,
NULL,
&VariableSize,
&AcpiVariableSet
);
if (EFI_ERROR(Status)) return NULL;
return AcpiVariableSet;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
|
