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949f388f | 1 | /*++\r |
2 | Emu RTC Architectural Protocol Driver as defined in PI\r | |
3 | \r | |
4 | Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>\r | |
5 | Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved.\r | |
d18d8a1d | 6 | This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
949f388f | 13 | \r |
14 | **/\r | |
15 | #include <PiDxe.h>\r | |
16 | \r | |
17 | #include <Library/BaseLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/UefiLib.h>\r | |
20 | #include <Library/UefiDriverEntryPoint.h>\r | |
21 | #include <Library/EmuThunkLib.h>\r | |
22 | #include <Library/MemoryAllocationLib.h>\r | |
23 | #include <Library/UefiBootServicesTableLib.h>\r | |
24 | \r | |
25 | #include <Protocol/RealTimeClock.h>\r | |
26 | \r | |
27 | BOOLEAN\r | |
28 | DayValid (\r | |
29 | IN EFI_TIME *Time\r | |
30 | );\r | |
31 | \r | |
32 | BOOLEAN\r | |
33 | IsLeapYear (\r | |
34 | IN EFI_TIME *Time\r | |
35 | );\r | |
36 | \r | |
37 | EFI_STATUS\r | |
38 | RtcTimeFieldsValid (\r | |
39 | IN EFI_TIME *Time\r | |
40 | );\r | |
41 | \r | |
42 | EFI_STATUS\r | |
43 | EFIAPI\r | |
44 | InitializeRealTimeClock (\r | |
45 | IN EFI_HANDLE ImageHandle,\r | |
46 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
47 | );\r | |
48 | \r | |
49 | EFI_STATUS\r | |
50 | EFIAPI\r | |
51 | EmuGetTime (\r | |
52 | OUT EFI_TIME * Time,\r | |
53 | OUT EFI_TIME_CAPABILITIES * Capabilities OPTIONAL\r | |
54 | )\r | |
55 | /*++\r | |
56 | \r | |
57 | Routine Description:\r | |
d18d8a1d | 58 | Service routine for RealTimeClockInstance->GetTime\r |
949f388f | 59 | \r |
60 | Arguments:\r | |
61 | \r | |
62 | Time - A pointer to storage that will receive a snapshot of the current time.\r | |
63 | \r | |
64 | Capabilities - A pointer to storage that will receive the capabilities of the real time clock\r | |
d18d8a1d | 65 | in the platform. This includes the real time clock's resolution and accuracy.\r |
949f388f | 66 | All reported device capabilities are rounded up. This is an OPTIONAL argument.\r |
67 | \r | |
68 | Returns:\r | |
69 | \r | |
70 | EFI_SUCEESS - The underlying GetSystemTime call occurred and returned\r | |
71 | Note that in the NT32 emulation, the GetSystemTime call has no return value\r | |
72 | thus you will always receive a EFI_SUCCESS on this.\r | |
73 | \r | |
74 | **/\r | |
75 | {\r | |
76 | \r | |
77 | //\r | |
78 | // Check parameter for null pointer\r | |
79 | //\r | |
80 | if (Time == NULL) {\r | |
81 | return EFI_INVALID_PARAMETER;\r | |
82 | \r | |
83 | }\r | |
84 | \r | |
85 | gEmuThunk->GetTime (Time, Capabilities);\r | |
86 | \r | |
87 | return EFI_SUCCESS;\r | |
88 | }\r | |
89 | \r | |
90 | EFI_STATUS\r | |
91 | EFIAPI\r | |
92 | EmuSetTime (\r | |
93 | IN EFI_TIME *Time\r | |
94 | )\r | |
95 | /*++\r | |
96 | \r | |
97 | Routine Description:\r | |
d18d8a1d | 98 | Service routine for RealTimeClockInstance->SetTime\r |
949f388f | 99 | \r |
100 | Arguments:\r | |
101 | \r | |
102 | Time - A pointer to storage containing the time and date information to\r | |
103 | program into the real time clock.\r | |
104 | \r | |
105 | Returns:\r | |
106 | \r | |
107 | EFI_SUCEESS - The operation completed successfully.\r | |
d18d8a1d | 108 | \r |
949f388f | 109 | EFI_INVALID_PARAMETER - One of the fields in Time is out of range.\r |
110 | \r | |
111 | EFI_DEVICE_ERROR - The operation could not be complete due to a device error.\r | |
112 | \r | |
113 | **/\r | |
114 | {\r | |
115 | EFI_STATUS Status;\r | |
116 | \r | |
117 | if (Time == NULL) {\r | |
118 | return EFI_INVALID_PARAMETER;\r | |
119 | }\r | |
120 | //\r | |
121 | // Make sure that the time fields are valid\r | |
122 | //\r | |
123 | Status = RtcTimeFieldsValid (Time);\r | |
124 | if (EFI_ERROR (Status)) {\r | |
125 | return Status;\r | |
126 | }\r | |
127 | return EFI_UNSUPPORTED;\r | |
128 | }\r | |
129 | \r | |
130 | EFI_STATUS\r | |
131 | EFIAPI\r | |
132 | EmuGetWakeupTime (\r | |
133 | OUT BOOLEAN *Enabled,\r | |
134 | OUT BOOLEAN *Pending,\r | |
135 | OUT EFI_TIME *Time\r | |
136 | )\r | |
137 | /*++\r | |
138 | \r | |
139 | Routine Description:\r | |
140 | Service routine for RealTimeClockInstance->GetWakeupTime\r | |
141 | \r | |
142 | Arguments:\r | |
143 | This - Indicates the protocol instance structure.\r | |
144 | \r | |
145 | Enabled - Indicates if the alarm is currently enabled or disabled.\r | |
146 | \r | |
147 | Pending - Indicates if the alarm signal is pending and requires\r | |
148 | acknowledgement.\r | |
149 | \r | |
150 | Time - The current alarm setting.\r | |
151 | \r | |
152 | Returns:\r | |
153 | \r | |
154 | EFI_SUCEESS - The operation completed successfully.\r | |
d18d8a1d | 155 | \r |
949f388f | 156 | EFI_DEVICE_ERROR - The operation could not be complete due to a device error.\r |
157 | \r | |
158 | EFI_UNSUPPORTED - The operation is not supported on this platform.\r | |
159 | \r | |
160 | **/\r | |
161 | {\r | |
162 | return EFI_UNSUPPORTED;\r | |
163 | }\r | |
164 | \r | |
165 | EFI_STATUS\r | |
166 | EFIAPI\r | |
167 | EmuSetWakeupTime (\r | |
168 | IN BOOLEAN Enable,\r | |
169 | OUT EFI_TIME *Time\r | |
170 | )\r | |
171 | /*++\r | |
172 | \r | |
173 | Routine Description:\r | |
174 | Service routine for RealTimeClockInstance->SetWakeupTime\r | |
175 | \r | |
176 | Arguments:\r | |
177 | \r | |
178 | Enabled - Enable or disable the wakeup alarm.\r | |
179 | \r | |
180 | Time - If enable is TRUE, the time to set the wakup alarm for.\r | |
181 | If enable is FALSE, then this parameter is optional, and\r | |
182 | may be NULL.\r | |
183 | \r | |
184 | Returns:\r | |
185 | \r | |
186 | EFI_SUCEESS - The operation completed successfully.\r | |
d18d8a1d | 187 | \r |
949f388f | 188 | EFI_DEVICE_ERROR - The operation could not be complete due to a device error.\r |
189 | \r | |
190 | EFI_INVALID_PARAMETER - A field in Time is out of range.\r | |
191 | \r | |
192 | EFI_UNSUPPORTED - The operation is not supported on this platform.\r | |
193 | \r | |
194 | **/\r | |
195 | {\r | |
196 | return EFI_UNSUPPORTED;\r | |
197 | }\r | |
198 | \r | |
199 | EFI_STATUS\r | |
200 | EFIAPI\r | |
201 | InitializeRealTimeClock (\r | |
202 | IN EFI_HANDLE ImageHandle,\r | |
203 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
204 | )\r | |
205 | /*++\r | |
206 | \r | |
207 | Routine Description:\r | |
d18d8a1d | 208 | Install Real Time Clock Protocol\r |
949f388f | 209 | \r |
210 | Arguments:\r | |
211 | ImageHandle - Image Handle\r | |
212 | SystemTable - Pointer to system table\r | |
213 | \r | |
214 | Returns:\r | |
215 | \r | |
216 | EFI_SUCEESS - Real Time Clock Services are installed into the Runtime Services Table\r | |
217 | \r | |
218 | **/\r | |
219 | {\r | |
220 | EFI_STATUS Status;\r | |
221 | EFI_HANDLE Handle;\r | |
222 | \r | |
223 | SystemTable->RuntimeServices->GetTime = EmuGetTime;\r | |
224 | SystemTable->RuntimeServices->SetTime = EmuSetTime;\r | |
225 | SystemTable->RuntimeServices->GetWakeupTime = EmuGetWakeupTime;\r | |
226 | SystemTable->RuntimeServices->SetWakeupTime = EmuSetWakeupTime;\r | |
227 | \r | |
228 | Handle = NULL;\r | |
229 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
230 | &Handle,\r | |
231 | &gEfiRealTimeClockArchProtocolGuid,\r | |
232 | NULL,\r | |
233 | NULL\r | |
234 | );\r | |
235 | return Status;\r | |
236 | }\r | |
237 | \r | |
238 | EFI_STATUS\r | |
239 | RtcTimeFieldsValid (\r | |
240 | IN EFI_TIME *Time\r | |
241 | )\r | |
242 | /*++\r | |
243 | \r | |
244 | Routine Description:\r | |
245 | \r | |
246 | Arguments:\r | |
d18d8a1d | 247 | \r |
248 | Returns:\r | |
949f388f | 249 | **/\r |
250 | {\r | |
251 | if (Time->Year < 1998 ||\r | |
252 | Time->Year > 2099 ||\r | |
253 | Time->Month < 1 ||\r | |
254 | Time->Month > 12 ||\r | |
255 | (!DayValid (Time)) ||\r | |
256 | Time->Hour > 23 ||\r | |
257 | Time->Minute > 59 ||\r | |
258 | Time->Second > 59 ||\r | |
259 | Time->Nanosecond > 999999999 ||\r | |
260 | (!(Time->TimeZone == EFI_UNSPECIFIED_TIMEZONE || (Time->TimeZone >= -1440 && Time->TimeZone <= 1440))) ||\r | |
261 | (Time->Daylight & (~(EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT)))\r | |
262 | ) {\r | |
263 | return EFI_INVALID_PARAMETER;\r | |
264 | }\r | |
265 | \r | |
266 | return EFI_SUCCESS;\r | |
267 | }\r | |
268 | \r | |
269 | BOOLEAN\r | |
270 | DayValid (\r | |
271 | IN EFI_TIME *Time\r | |
272 | )\r | |
273 | {\r | |
274 | \r | |
275 | STATIC const INTN DayOfMonth[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };\r | |
276 | \r | |
277 | if (Time->Day < 1 ||\r | |
278 | Time->Day > DayOfMonth[Time->Month - 1] ||\r | |
279 | (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))\r | |
280 | ) {\r | |
281 | return FALSE;\r | |
282 | }\r | |
283 | \r | |
284 | return TRUE;\r | |
285 | }\r | |
286 | \r | |
287 | BOOLEAN\r | |
288 | IsLeapYear (\r | |
289 | IN EFI_TIME *Time\r | |
290 | )\r | |
291 | {\r | |
292 | if (Time->Year % 4 == 0) {\r | |
293 | if (Time->Year % 100 == 0) {\r | |
294 | if (Time->Year % 400 == 0) {\r | |
295 | return TRUE;\r | |
296 | } else {\r | |
297 | return FALSE;\r | |
298 | }\r | |
299 | } else {\r | |
300 | return TRUE;\r | |
301 | }\r | |
302 | } else {\r | |
303 | return FALSE;\r | |
304 | }\r | |
305 | }\r |