UefiCpuPkg/Library/MpInitLib/MpLibTdxNull.c

   1 /** @file
   2   CPU MP Initialize Library common functions (NULL instance) for Td guest.
   3
   4   Copyright (c) 2020 - 2022, Intel Corporation. All rights reserved.<BR>
   5
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include "MpLib.h"
  11 #include "MpIntelTdx.h"
  12
  13 /**
  14   Gets detailed MP-related information on the requested processor at the
  15   instant this call is made. This service may only be called from the BSP.
  16
  17   @param[in]  ProcessorNumber       The handle number of processor.
  18   @param[out] ProcessorInfoBuffer   A pointer to the buffer where information for
  19                                     the requested processor is deposited.
  20   @param[out]  HealthData            Return processor health data.
  21
  22   @retval EFI_SUCCESS             Processor information was returned.
  23   @retval EFI_DEVICE_ERROR        The calling processor is an AP.
  24   @retval EFI_INVALID_PARAMETER   ProcessorInfoBuffer is NULL.
  25   @retval EFI_NOT_FOUND           The processor with the handle specified by
  26                                   ProcessorNumber does not exist in the platform.
  27   @retval EFI_NOT_READY           MP Initialize Library is not initialized.
  28
  29 **/
  30 EFI_STATUS
  31 TdxMpInitLibGetProcessorInfo (
  32   IN  UINTN                      ProcessorNumber,
  33   OUT EFI_PROCESSOR_INFORMATION  *ProcessorInfoBuffer,
  34   OUT EFI_HEALTH_FLAGS           *HealthData  OPTIONAL
  35   )
  36 {
  37   ASSERT (FALSE);
  38   return EFI_UNSUPPORTED;
  39 }
  40
  41 /**
  42   Retrieves the number of logical processor in the platform and the number of
  43   those logical processors that are enabled on this boot. This service may only
  44   be called from the BSP.
  45
  46   @param[out] NumberOfProcessors          Pointer to the total number of logical
  47                                           processors in the system, including the BSP
  48                                           and disabled APs.
  49   @param[out] NumberOfEnabledProcessors   Pointer to the number of enabled logical
  50                                           processors that exist in system, including
  51                                           the BSP.
  52
  53   @retval EFI_SUCCESS             The number of logical processors and enabled
  54                                   logical processors was retrieved.
  55   @retval EFI_DEVICE_ERROR        The calling processor is an AP.
  56   @retval EFI_INVALID_PARAMETER   NumberOfProcessors is NULL and NumberOfEnabledProcessors
  57                                   is NULL.
  58   @retval EFI_NOT_READY           MP Initialize Library is not initialized.
  59
  60 **/
  61 EFI_STATUS
  62 TdxMpInitLibGetNumberOfProcessors (
  63   OUT UINTN *NumberOfProcessors, OPTIONAL
  64   OUT UINTN                     *NumberOfEnabledProcessors OPTIONAL
  65   )
  66 {
  67   ASSERT (FALSE);
  68   return EFI_UNSUPPORTED;
  69 }