1 /** @file 2 Provides Set/Get time operations. 3 4 Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. 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 15 #include "PcRtc.h" 16 17 PC_RTC_MODULE_GLOBALS mModuleGlobal; 18 19 EFI_HANDLE mHandle = NULL; 20 21 /** 22 Returns the current time and date information, and the time-keeping capabilities 23 of the hardware platform. 24 25 @param Time A pointer to storage to receive a snapshot of the current time. 26 @param Capabilities An optional pointer to a buffer to receive the real time 27 clock device's capabilities. 28 29 @retval EFI_SUCCESS The operation completed successfully. 30 @retval EFI_INVALID_PARAMETER Time is NULL. 31 @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error. 32 33 **/ 34 EFI_STATUS 35 EFIAPI 36 PcRtcEfiGetTime ( 37 OUT EFI_TIME *Time, 38 OUT EFI_TIME_CAPABILITIES *Capabilities OPTIONAL 39 ) 40 { 41 return PcRtcGetTime (Time, Capabilities, &mModuleGlobal); 42 } 43 44 /** 45 Sets the current local time and date information. 46 47 @param Time A pointer to the current time. 48 49 @retval EFI_SUCCESS The operation completed successfully. 50 @retval EFI_INVALID_PARAMETER A time field is out of range. 51 @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error. 52 53 **/ 54 EFI_STATUS 55 EFIAPI 56 PcRtcEfiSetTime ( 57 IN EFI_TIME *Time 58 ) 59 { 60 return PcRtcSetTime (Time, &mModuleGlobal); 61 } 62 63 /** 64 Returns the current wakeup alarm clock setting. 65 66 @param Enabled Indicates if the alarm is currently enabled or disabled. 67 @param Pending Indicates if the alarm signal is pending and requires acknowledgement. 68 @param Time The current alarm setting. 69 70 @retval EFI_SUCCESS The alarm settings were returned. 71 @retval EFI_INVALID_PARAMETER Enabled is NULL. 72 @retval EFI_INVALID_PARAMETER Pending is NULL. 73 @retval EFI_INVALID_PARAMETER Time is NULL. 74 @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error. 75 @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform. 76 77 **/ 78 EFI_STATUS 79 EFIAPI 80 PcRtcEfiGetWakeupTime ( 81 OUT BOOLEAN *Enabled, 82 OUT BOOLEAN *Pending, 83 OUT EFI_TIME *Time 84 ) 85 { 86 return PcRtcGetWakeupTime (Enabled, Pending, Time, &mModuleGlobal); 87 } 88 89 90 /** 91 Sets the system wakeup alarm clock time. 92 93 @param Enabled Enable or disable the wakeup alarm. 94 @param Time If Enable is TRUE, the time to set the wakeup alarm for. 95 If Enable is FALSE, then this parameter is optional, and may be NULL. 96 97 @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. 98 If Enable is FALSE, then the wakeup alarm was disabled. 99 @retval EFI_INVALID_PARAMETER A time field is out of range. 100 @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error. 101 @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform. 102 103 **/ 104 EFI_STATUS 105 EFIAPI 106 PcRtcEfiSetWakeupTime ( 107 IN BOOLEAN Enabled, 108 IN EFI_TIME *Time OPTIONAL 109 ) 110 { 111 return PcRtcSetWakeupTime (Enabled, Time, &mModuleGlobal); 112 } 113 114 /** 115 The user Entry Point for PcRTC module. 116 117 This is the entrhy point for PcRTC module. It installs the UEFI runtime service 118 including GetTime(),SetTime(),GetWakeupTime(),and SetWakeupTime(). 119 120 @param ImageHandle The firmware allocated handle for the EFI image. 121 @param SystemTable A pointer to the EFI System Table. 122 123 @retval EFI_SUCCESS The entry point is executed successfully. 124 @retval Others Some error occurs when executing this entry point. 125 126 **/ 127 EFI_STATUS 128 EFIAPI 129 InitializePcRtc ( 130 IN EFI_HANDLE ImageHandle, 131 IN EFI_SYSTEM_TABLE *SystemTable 132 ) 133 { 134 EFI_STATUS Status; 135 EFI_EVENT Event; 136 137 EfiInitializeLock (&mModuleGlobal.RtcLock, TPL_CALLBACK); 138 mModuleGlobal.CenturyRtcAddress = GetCenturyRtcAddress (); 139 140 Status = PcRtcInit (&mModuleGlobal); 141 ASSERT_EFI_ERROR (Status); 142 143 Status = gBS->CreateEventEx ( 144 EVT_NOTIFY_SIGNAL, 145 TPL_CALLBACK, 146 PcRtcAcpiTableChangeCallback, 147 NULL, 148 &gEfiAcpi10TableGuid, 149 &Event 150 ); 151 ASSERT_EFI_ERROR (Status); 152 153 Status = gBS->CreateEventEx ( 154 EVT_NOTIFY_SIGNAL, 155 TPL_CALLBACK, 156 PcRtcAcpiTableChangeCallback, 157 NULL, 158 &gEfiAcpiTableGuid, 159 &Event 160 ); 161 ASSERT_EFI_ERROR (Status); 162 163 gRT->GetTime = PcRtcEfiGetTime; 164 gRT->SetTime = PcRtcEfiSetTime; 165 gRT->GetWakeupTime = PcRtcEfiGetWakeupTime; 166 gRT->SetWakeupTime = PcRtcEfiSetWakeupTime; 167 168 Status = gBS->InstallMultipleProtocolInterfaces ( 169 &mHandle, 170 &gEfiRealTimeClockArchProtocolGuid, 171 NULL, 172 NULL 173 ); 174 ASSERT_EFI_ERROR (Status); 175 176 return Status; 177 } 178
