Vlv2TbltDevicePkg/PlatformDxe/IdccInfo.c

   1 /** @file
   2
   3   Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7
   8
   9 Module Name:
  10
  11
  12   IdccInfo.c
  13
  14 Abstract:
  15
  16   Platform information used by IDCC.
  17
  18 Revision History
  19
  20 --*/
  21
  22 #include "PlatformDxe.h"
  23
  24 #include <Guid/IdccData.h>
  25
  26 extern EFI_GUID mPlatformDriverGuid;
  27
  28
  29 EFI_STATUS
  30 WriteIdccInfo (
  31   )
  32 {
  33   EFI_STATUS                Status;
  34   EFI_DATA_HUB_PROTOCOL     *DataHub;
  35   UINT8                     Ratio;
  36   EFI_IDCC_PROCESSOR_RATIO  ProcRatio;
  37
  38   //
  39   // Locate the data hub protocol
  40   //
  41   Status = gBS->LocateProtocol (
  42                   &gEfiDataHubProtocolGuid,
  43                   NULL,
  44                   (VOID **) &DataHub
  45                   );
  46
  47   //
  48   // Find processor actual ratio
  49   //
  50   Ratio = 15; //Temporary - some dummy value.
  51
  52   //
  53   // Fill in IDCC Type 5 structure
  54   //
  55   ProcRatio.IdccHeader.Type = EFI_IDCC_PROC_RATIO_TYPE;
  56   ProcRatio.IdccHeader.RecordLength = sizeof(EFI_IDCC_PROCESSOR_RATIO);
  57   ProcRatio.ProcessorRatio = Ratio;
  58
  59   //
  60   // Write data to the data hub
  61   //
  62   Status = DataHub->LogData (
  63                       DataHub,
  64                       &gIdccDataHubGuid,
  65                       &mPlatformDriverGuid,
  66                       EFI_DATA_RECORD_CLASS_DATA,
  67                       &ProcRatio,
  68                       sizeof(EFI_IDCC_PROCESSOR_RATIO)
  69                       );
  70
  71   return Status;
  72 }