QuarkPlatformPkg/Acpi/DxeSmm/SmmPowerManagement/SmmPowerManagement.c

   1 /** @file
   2
   3 This is QNC Smm Power Management driver
   4
   5 Copyright (c) 2013-2015 Intel Corporation.
   6
   7 This program and the accompanying materials
   8 are licensed and made available under the terms and conditions of the BSD License
   9 which accompanies this distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15
  16 **/
  17
  18 #include "SmmPowerManagement.h"
  19
  20 //
  21 // Global variables
  22 //
  23 EFI_SMM_CPU_PROTOCOL                    *mSmmCpu = NULL;
  24 EFI_GLOBAL_NVS_AREA                     *mGlobalNvsAreaPtr = NULL;
  25 EFI_MP_SERVICES_PROTOCOL                *mMpService = NULL;
  26 EFI_ACPI_SDT_PROTOCOL                   *mAcpiSdt = NULL;
  27 EFI_ACPI_TABLE_PROTOCOL                 *mAcpiTable = NULL;
  28
  29 EFI_GUID    mS3CpuRegisterTableGuid = S3_CPU_REGISTER_TABLE_GUID;
  30
  31 EFI_STATUS
  32 EFIAPI
  33 InitializePowerManagement (
  34   IN EFI_HANDLE        ImageHandle,
  35   IN EFI_SYSTEM_TABLE  *SystemTable
  36   )
  37 /*++
  38
  39 Routine Description:
  40
  41   Initializes the SMM Handler Driver
  42
  43 Arguments:
  44
  45   ImageHandle -
  46
  47   SystemTable -
  48
  49 Returns:
  50
  51   None
  52
  53 --*/
  54 {
  55   EFI_STATUS                                Status;
  56   EFI_SMM_SW_DISPATCH2_PROTOCOL             *SwDispatch;
  57   EFI_GLOBAL_NVS_AREA_PROTOCOL              *GlobalNvsAreaProtocol;
  58
  59   //
  60   // Get SMM CPU protocol
  61   //
  62   Status = gSmst->SmmLocateProtocol (
  63                     &gEfiSmmCpuProtocolGuid,
  64                     NULL,
  65                     (VOID **)&mSmmCpu
  66                     );
  67   ASSERT_EFI_ERROR (Status);
  68
  69   //
  70   //  Get the Sw dispatch protocol
  71   //
  72   Status = gSmst->SmmLocateProtocol (
  73                     &gEfiSmmSwDispatch2ProtocolGuid,
  74                     NULL,
  75                     (VOID**)&SwDispatch
  76                     );
  77   ASSERT_EFI_ERROR (Status);
  78
  79   //
  80   // Get Global NVS Area Protocol
  81   //
  82   Status = gBS->LocateProtocol (&gEfiGlobalNvsAreaProtocolGuid, NULL, (VOID **)&GlobalNvsAreaProtocol);
  83   ASSERT_EFI_ERROR (Status);
  84   mGlobalNvsAreaPtr = GlobalNvsAreaProtocol->Area;
  85
  86   //
  87   // Locate and cache PI AcpiSdt Protocol.
  88   //
  89   Status = gBS->LocateProtocol (
  90                   &gEfiAcpiSdtProtocolGuid,
  91                   NULL,
  92                   (VOID **) &mAcpiSdt
  93                   );
  94   ASSERT_EFI_ERROR (Status);
  95
  96
  97   //
  98   // Locate and cache PI AcpiSdt Protocol.
  99   //
 100   Status = gBS->LocateProtocol (
 101                   &gEfiAcpiTableProtocolGuid,
 102                   NULL,
 103                   (VOID **) &mAcpiTable
 104                   );
 105   ASSERT_EFI_ERROR (Status);
 106
 107
 108   //
 109   // Get MpService protocol
 110   //
 111   Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **)&mMpService);
 112   ASSERT_EFI_ERROR (Status);
 113   //
 114   // Initialize power management features on processors
 115   //
 116   PpmInit();
 117
 118   return Status;
 119 }