76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
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/** @file
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CPU Features PEIM driver to initialize CPU features.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/RegisterCpuFeaturesLib.h>
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#include <Library/HobLib.h>
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#include <Guid/CpuFeaturesInitDone.h>
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EFI_PEI_PPI_DESCRIPTOR mPeiCpuFeaturesInitDonePpiDesc = {
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEdkiiCpuFeaturesInitDoneGuid,
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NULL
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};
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/**
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CPU Features driver entry point function.
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It will perform CPU features initialization, except for
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PcdCpuFeaturesInitOnS3Resume is FALSE on S3 resume.
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@param FileHandle Handle of the file being invoked.
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@param PeiServices Describes the list of possible PEI Services.
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@retval EFI_SUCCESS CPU Features is initialized successfully.
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**/
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EFI_STATUS
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EFIAPI
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CpuFeaturesPeimInitialize (
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IN EFI_PEI_FILE_HANDLE FileHandle,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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{
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EFI_STATUS Status;
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EFI_BOOT_MODE BootMode;
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Status = PeiServicesGetBootMode (&BootMode);
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ASSERT_EFI_ERROR (Status);
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if (BootMode == BOOT_ON_S3_RESUME &&
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!PcdGetBool (PcdCpuFeaturesInitOnS3Resume)) {
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//
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// Does nothing when if PcdCpuFeaturesInitOnS3Resume is FLASE
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// on S3 boot mode
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//
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return EFI_SUCCESS;
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}
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CpuFeaturesDetect ();
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CpuFeaturesInitialize ();
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//
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// Install CPU Features Init Done PPI
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//
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Status = PeiServicesInstallPpi(&mPeiCpuFeaturesInitDonePpiDesc);
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ASSERT_EFI_ERROR (Status);
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//
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// Build HOB to let CpuFeatureDxe driver skip the initialization process.
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//
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BuildGuidHob (&gEdkiiCpuFeaturesInitDoneGuid, 0);
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return EFI_SUCCESS;
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}
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