C++ (Cpp) SmmCpuFeaturesDisableSmrr Examples

Example #1

/**
  Replace OS MTRR's with SMI MTRR's.

  @param    CpuIndex             Processor Index

**/
VOID
ReplaceOSMtrrs (
  IN      UINTN                     CpuIndex
  )
{
  SmmCpuFeaturesDisableSmrr ();

  //
  // Replace all MTRRs registers
  //
  MtrrSetAllMtrrs (&gSmiMtrrs);
}

Example #2

File: MpService.c Project: PaulSelles/edk2

/**
  Replace OS MTRR's with SMI MTRR's.

  @param    CpuIndex             Processor Index

**/
VOID
ReplaceOSMtrrs (
  IN      UINTN                     CpuIndex
  )
{
  PROCESSOR_SMM_DESCRIPTOR       *Psd;
  UINT64                         *SmiMtrrs;
  MTRR_SETTINGS                  *BiosMtrr;

  Psd = (PROCESSOR_SMM_DESCRIPTOR*)(mCpuHotPlugData.SmBase[CpuIndex] + SMM_PSD_OFFSET);
  SmiMtrrs = (UINT64*)(UINTN)Psd->MtrrBaseMaskPtr;

  SmmCpuFeaturesDisableSmrr ();

  //
  // Replace all MTRRs registers
  //
  BiosMtrr  = (MTRR_SETTINGS*)SmiMtrrs;
  MtrrSetAllMtrrs(BiosMtrr);
}