Vlv2TbltDevicePkg/PlatformDxe/IdccInfo.c

   1 /** @file
   2
   3   Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
   4
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13
  14 Module Name:
  15
  16
  17   IdccInfo.c
  18
  19 Abstract:
  20
  21   Platform information used by IDCC.
  22
  23 Revision History
  24
  25 --*/
  26
  27 #include "PlatformDxe.h"
  28
  29 #include <Guid/IdccData.h>
  30
  31 extern EFI_GUID mPlatformDriverGuid;
  32
  33
  34 EFI_STATUS
  35 WriteIdccInfo (
  36   )
  37 {
  38   EFI_STATUS                Status;
  39   EFI_DATA_HUB_PROTOCOL     *DataHub;
  40   UINT8                     Ratio;
  41   EFI_IDCC_PROCESSOR_RATIO  ProcRatio;
  42
  43   //
  44   // Locate the data hub protocol
  45   //
  46   Status = gBS->LocateProtocol (
  47                   &gEfiDataHubProtocolGuid,
  48                   NULL,
  49                   (VOID **) &DataHub
  50                   );
  51
  52   //
  53   // Find processor actual ratio
  54   //
  55   Ratio = 15; //Temporary - some dummy value.
  56
  57   //
  58   // Fill in IDCC Type 5 structure
  59   //
  60   ProcRatio.IdccHeader.Type = EFI_IDCC_PROC_RATIO_TYPE;
  61   ProcRatio.IdccHeader.RecordLength = sizeof(EFI_IDCC_PROCESSOR_RATIO);
  62   ProcRatio.ProcessorRatio = Ratio;
  63
  64   //
  65   // Write data to the data hub
  66   //
  67   Status = DataHub->LogData (
  68                       DataHub,
  69                       &gIdccDataHubGuid,
  70                       &mPlatformDriverGuid,
  71                       EFI_DATA_RECORD_CLASS_DATA,
  72                       &ProcRatio,
  73                       sizeof(EFI_IDCC_PROCESSOR_RATIO)
  74                       );
  75
  76   return Status;
  77 }