diff options
Diffstat (limited to 'Core/EM/S3/AcpiPeiS3Func.c')
| -rw-r--r-- | Core/EM/S3/AcpiPeiS3Func.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/Core/EM/S3/AcpiPeiS3Func.c b/Core/EM/S3/AcpiPeiS3Func.c new file mode 100644 index 0000000..966ddcb --- /dev/null +++ b/Core/EM/S3/AcpiPeiS3Func.c @@ -0,0 +1,141 @@ +//********************************************************************** +//********************************************************************** +//** ** +//** (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 ** +//** ** +//********************************************************************** +//********************************************************************** + |