diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c new file mode 100644 index 00000000..f631797a --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/CpuFeatures/CpuFeaturesPei.c @@ -0,0 +1,75 @@ +/** @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; +} + |