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 SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9
  10 **/
  11
  12 #include "SmmPowerManagement.h"
  13
  14 //
  15 // Global variables
  16 //
  17 EFI_SMM_CPU_PROTOCOL                    *mSmmCpu = NULL;
  18 EFI_GLOBAL_NVS_AREA                     *mGlobalNvsAreaPtr = NULL;
  19 EFI_MP_SERVICES_PROTOCOL                *mMpService = NULL;
  20 EFI_ACPI_SDT_PROTOCOL                   *mAcpiSdt = NULL;
  21 EFI_ACPI_TABLE_PROTOCOL                 *mAcpiTable = NULL;
  22
  23 EFI_GUID    mS3CpuRegisterTableGuid = S3_CPU_REGISTER_TABLE_GUID;
  24
  25 EFI_STATUS
  26 EFIAPI
  27 InitializePowerManagement (
  28   IN EFI_HANDLE        ImageHandle,
  29   IN EFI_SYSTEM_TABLE  *SystemTable
  30   )
  31 /*++
  32
  33 Routine Description:
  34
  35   Initializes the SMM Handler Driver
  36
  37 Arguments:
  38
  39   ImageHandle -
  40
  41   SystemTable -
  42
  43 Returns:
  44
  45   None
  46
  47 --*/
  48 {
  49   EFI_STATUS                                Status;
  50   EFI_SMM_SW_DISPATCH2_PROTOCOL             *SwDispatch;
  51   EFI_GLOBAL_NVS_AREA_PROTOCOL              *GlobalNvsAreaProtocol;
  52
  53   //
  54   // Get SMM CPU protocol
  55   //
  56   Status = gSmst->SmmLocateProtocol (
  57                     &gEfiSmmCpuProtocolGuid,
  58                     NULL,
  59                     (VOID **)&mSmmCpu
  60                     );
  61   ASSERT_EFI_ERROR (Status);
  62
  63   //
  64   //  Get the Sw dispatch protocol
  65   //
  66   Status = gSmst->SmmLocateProtocol (
  67                     &gEfiSmmSwDispatch2ProtocolGuid,
  68                     NULL,
  69                     (VOID**)&SwDispatch
  70                     );
  71   ASSERT_EFI_ERROR (Status);
  72
  73   //
  74   // Get Global NVS Area Protocol
  75   //
  76   Status = gBS->LocateProtocol (&gEfiGlobalNvsAreaProtocolGuid, NULL, (VOID **)&GlobalNvsAreaProtocol);
  77   ASSERT_EFI_ERROR (Status);
  78   mGlobalNvsAreaPtr = GlobalNvsAreaProtocol->Area;
  79
  80   //
  81   // Locate and cache PI AcpiSdt Protocol.
  82   //
  83   Status = gBS->LocateProtocol (
  84                   &gEfiAcpiSdtProtocolGuid,
  85                   NULL,
  86                   (VOID **) &mAcpiSdt
  87                   );
  88   ASSERT_EFI_ERROR (Status);
  89
  90
  91   //
  92   // Locate and cache PI AcpiSdt Protocol.
  93   //
  94   Status = gBS->LocateProtocol (
  95                   &gEfiAcpiTableProtocolGuid,
  96                   NULL,
  97                   (VOID **) &mAcpiTable
  98                   );
  99   ASSERT_EFI_ERROR (Status);
 100
 101
 102   //
 103   // Get MpService protocol
 104   //
 105   Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **)&mMpService);
 106   ASSERT_EFI_ERROR (Status);
 107   //
 108   // Initialize power management features on processors
 109   //
 110   PpmInit();
 111
 112   return Status;
 113 }