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 } 120
