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/** @file
CPU Features PEIM driver to initialize CPU features.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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.
**/
#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/RegisterCpuFeaturesLib.h>
#include <Guid/CpuFeaturesInitDone.h>
EFI_PEI_PPI_DESCRIPTOR mPeiCpuFeaturesInitDonePpiDesc = {
(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEdkiiCpuFeaturesInitDoneGuid,
NULL
};
/**
CPU Features driver entry point function.
It will perform CPU features initialization, except for
PcdCpuFeaturesInitOnS3Resume is FALSE on S3 resume.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCCESS CPU Features is initialized successfully.
**/
EFI_STATUS
EFIAPI
CpuFeaturesPeimInitialize (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_BOOT_MODE BootMode;
Status = PeiServicesGetBootMode (&BootMode);
ASSERT_EFI_ERROR (Status);
if (BootMode == BOOT_ON_S3_RESUME &&
!PcdGetBool (PcdCpuFeaturesInitOnS3Resume)) {
//
// Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE
// on S3 boot mode
//
return EFI_SUCCESS;
}
CpuFeaturesDetect ();
CpuFeaturesInitialize ();
//
// Install CPU Features Init Done PPI
//
Status = PeiServicesInstallPpi(&mPeiCpuFeaturesInitDonePpiDesc);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}
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