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1 | /** @file\r |
2 | Implement EFI RealTimeClock runtime services via RTC Lib.\r | |
3 | \r | |
4 | Currently this driver does not support runtime virtual calling.\r | |
5 | \r | |
6 | \r | |
7 | Copyright (c) 2008-2009, Apple Inc. All rights reserved.\r | |
8 | \r | |
9 | All rights reserved. This program and the accompanying materials\r | |
10 | are licensed and made available under the terms and conditions of the BSD License\r | |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | #include <PiDxe.h> \r | |
20 | #include <Library/UefiLib.h>\r | |
21 | #include <Library/UefiBootServicesTableLib.h>\r | |
22 | #include <Library/RealTimeClockLib.h>\r | |
23 | #include <Protocol/RealTimeClock.h>\r | |
24 | \r | |
25 | EFI_HANDLE mHandle = NULL;\r | |
26 | \r | |
27 | \r | |
28 | \r | |
29 | /**\r | |
30 | Returns the current time and date information, and the time-keeping capabilities\r | |
31 | of the hardware platform.\r | |
32 | \r | |
33 | @param Time A pointer to storage to receive a snapshot of the current time.\r | |
34 | @param Capabilities An optional pointer to a buffer to receive the real time clock\r | |
35 | device's capabilities.\r | |
36 | \r | |
37 | @retval EFI_SUCCESS The operation completed successfully.\r | |
38 | @retval EFI_INVALID_PARAMETER Time is NULL.\r | |
39 | @retval EFI_DEVICE_ERROR The time could not be retrieved due to hardware error.\r | |
40 | \r | |
41 | **/\r | |
42 | EFI_STATUS\r | |
43 | EFIAPI\r | |
44 | GetTime (\r | |
45 | OUT EFI_TIME *Time,\r | |
46 | OUT EFI_TIME_CAPABILITIES *Capabilities\r | |
47 | )\r | |
48 | {\r | |
49 | return LibGetTime (Time, Capabilities);\r | |
50 | }\r | |
51 | \r | |
52 | \r | |
53 | \r | |
54 | /**\r | |
55 | Sets the current local time and date information.\r | |
56 | \r | |
57 | @param Time A pointer to the current time.\r | |
58 | \r | |
59 | @retval EFI_SUCCESS The operation completed successfully.\r | |
60 | @retval EFI_INVALID_PARAMETER A time field is out of range.\r | |
61 | @retval EFI_DEVICE_ERROR The time could not be set due due to hardware error.\r | |
62 | \r | |
63 | **/\r | |
64 | EFI_STATUS\r | |
65 | EFIAPI\r | |
66 | SetTime (\r | |
67 | IN EFI_TIME *Time\r | |
68 | )\r | |
69 | {\r | |
70 | return LibSetTime (Time);\r | |
71 | }\r | |
72 | \r | |
73 | \r | |
74 | /**\r | |
75 | Returns the current wakeup alarm clock setting.\r | |
76 | \r | |
77 | @param Enabled Indicates if the alarm is currently enabled or disabled.\r | |
78 | @param Pending Indicates if the alarm signal is pending and requires acknowledgement.\r | |
79 | @param Time The current alarm setting.\r | |
80 | \r | |
81 | @retval EFI_SUCCESS The alarm settings were returned.\r | |
82 | @retval EFI_INVALID_PARAMETER Any parameter is NULL.\r | |
83 | @retval EFI_DEVICE_ERROR The wakeup time could not be retrieved due to a hardware error.\r | |
84 | \r | |
85 | **/\r | |
86 | EFI_STATUS\r | |
87 | EFIAPI\r | |
88 | GetWakeupTime (\r | |
89 | OUT BOOLEAN *Enabled,\r | |
90 | OUT BOOLEAN *Pending,\r | |
91 | OUT EFI_TIME *Time\r | |
92 | )\r | |
93 | {\r | |
94 | return LibGetWakeupTime (Enabled, Pending, Time);\r | |
95 | }\r | |
96 | \r | |
97 | \r | |
98 | /**\r | |
99 | Sets the system wakeup alarm clock time.\r | |
100 | \r | |
101 | @param Enabled Enable or disable the wakeup alarm.\r | |
102 | @param Time If Enable is TRUE, the time to set the wakeup alarm for.\r | |
103 | \r | |
104 | @retval EFI_SUCCESS If Enable is TRUE, then the wakeup alarm was enabled. If\r | |
105 | Enable is FALSE, then the wakeup alarm was disabled.\r | |
106 | @retval EFI_INVALID_PARAMETER A time field is out of range.\r | |
107 | @retval EFI_DEVICE_ERROR The wakeup time could not be set due to a hardware error.\r | |
108 | @retval EFI_UNSUPPORTED A wakeup timer is not supported on this platform.\r | |
109 | \r | |
110 | **/\r | |
111 | EFI_STATUS\r | |
112 | EFIAPI\r | |
113 | SetWakeupTime (\r | |
114 | IN BOOLEAN Enabled,\r | |
115 | OUT EFI_TIME *Time\r | |
116 | )\r | |
117 | {\r | |
118 | return LibSetWakeupTime (Enabled, Time);\r | |
119 | }\r | |
120 | \r | |
121 | \r | |
122 | \r | |
123 | /**\r | |
124 | This is the declaration of an EFI image entry point. This can be the entry point to an application\r | |
125 | written to this specification, an EFI boot service driver, or an EFI runtime driver.\r | |
126 | \r | |
127 | @param ImageHandle Handle that identifies the loaded image.\r | |
128 | @param SystemTable System Table for this image.\r | |
129 | \r | |
130 | @retval EFI_SUCCESS The operation completed successfully.\r | |
131 | \r | |
132 | **/\r | |
133 | EFI_STATUS\r | |
134 | EFIAPI\r | |
135 | InitializeRealTimeClock (\r | |
136 | IN EFI_HANDLE ImageHandle,\r | |
137 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
138 | )\r | |
139 | {\r | |
140 | EFI_STATUS Status;\r | |
141 | \r | |
142 | LibRtcInitialize (ImageHandle, SystemTable);\r | |
143 | \r | |
144 | SystemTable->RuntimeServices->GetTime = GetTime;\r | |
145 | SystemTable->RuntimeServices->SetTime = SetTime;\r | |
146 | SystemTable->RuntimeServices->GetWakeupTime = GetWakeupTime;\r | |
147 | SystemTable->RuntimeServices->SetWakeupTime = SetWakeupTime;\r | |
148 | \r | |
149 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
150 | &mHandle,\r | |
151 | &gEfiRealTimeClockArchProtocolGuid,\r | |
152 | NULL,\r | |
153 | NULL\r | |
154 | );\r | |
155 | \r | |
156 | return Status;\r | |
157 | }\r | |
158 | \r |