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/** @file
CPU Features PEIM driver to initialize CPU features.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PeiServicesLib.h>
#include <Library/RegisterCpuFeaturesLib.h>
#include <Library/HobLib.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);
//
// Build HOB to let CpuFeatureDxe driver skip the initialization process.
//
BuildGuidHob (&gEdkiiCpuFeaturesInitDoneGuid, 0);
return EFI_SUCCESS;
}
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