CpuFeaturesPei.c

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#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
};
 
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;
}