UefiCpuPkg/Library/SmmCpuFeaturesLib/StandaloneMmCpuFeaturesLib.c

   1 /** @file
   2 Standalone MM CPU specific programming.
   3
   4 Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
   5 Copyright (c) Microsoft Corporation.<BR>
   6 SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include <PiMm.h>
  11 #include <Library/PcdLib.h>
  12 #include "CpuFeaturesLib.h"
  13
  14 /**
  15   Gets the maximum number of logical processors from the PCD PcdCpuMaxLogicalProcessorNumber.
  16
  17   This access is abstracted from the PCD services to enforce that the PCD be
  18   FixedAtBuild in the Standalone MM build of this driver.
  19
  20   @return  The value of PcdCpuMaxLogicalProcessorNumber.
  21
  22 **/
  23 UINT32
  24 GetCpuMaxLogicalProcessorNumber (
  25   VOID
  26   )
  27 {
  28   return FixedPcdGet32 (PcdCpuMaxLogicalProcessorNumber);
  29 }
  30
  31 /**
  32   The Standalone MM library constructor.
  33
  34   @param[in] ImageHandle  Image handle of this driver.
  35   @param[in] SystemTable  A Pointer to the EFI System Table.
  36
  37   @retval EFI_SUCCESS     This constructor always returns success.
  38
  39 **/
  40 EFI_STATUS
  41 EFIAPI
  42 StandaloneMmCpuFeaturesLibConstructor (
  43   IN EFI_HANDLE           ImageHandle,
  44   IN EFI_MM_SYSTEM_TABLE  *SystemTable
  45   )
  46 {
  47   CpuFeaturesLibInitialization ();
  48
  49   return EFI_SUCCESS;
  50 }