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fb0b259e | 1 | /** @file\r |
2 | RTC Architectural Protocol GUID as defined in DxeCis 0.96.\r | |
8cd4d17c | 3 | \r |
fb0b259e | 4 | Copyright (c) 2006 - 2007, Intel Corporation\r |
3cfb790c | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
8cd4d17c | 12 | \r |
fb0b259e | 13 | **/\r |
8cd4d17c | 14 | \r |
15 | #include "PcRtc.h"\r | |
16 | \r | |
8cd4d17c | 17 | INTN\r |
18 | CompareHMS (\r | |
19 | IN EFI_TIME *From,\r | |
20 | IN EFI_TIME *To\r | |
21 | );\r | |
22 | \r | |
8cd4d17c | 23 | BOOLEAN\r |
24 | IsWithinOneDay (\r | |
25 | IN EFI_TIME *From,\r | |
26 | IN EFI_TIME *To\r | |
27 | );\r | |
28 | \r | |
8cd4d17c | 29 | UINT8\r |
30 | RtcRead (\r | |
31 | IN UINT8 Address\r | |
32 | )\r | |
33 | /*++\r | |
34 | \r | |
35 | Routine Description:\r | |
36 | \r | |
37 | GC_TODO: Add function description\r | |
38 | \r | |
39 | Arguments:\r | |
40 | \r | |
41 | Address - GC_TODO: add argument description\r | |
42 | \r | |
43 | Returns:\r | |
44 | \r | |
45 | GC_TODO: add return values\r | |
46 | \r | |
47 | --*/\r | |
48 | {\r | |
49 | IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));\r | |
50 | return IoRead8 (PCAT_RTC_DATA_REGISTER);\r | |
51 | }\r | |
52 | \r | |
8cd4d17c | 53 | VOID\r |
54 | RtcWrite (\r | |
55 | IN UINT8 Address,\r | |
56 | IN UINT8 Data\r | |
57 | )\r | |
58 | /*++\r | |
59 | \r | |
60 | Routine Description:\r | |
61 | \r | |
62 | GC_TODO: Add function description\r | |
63 | \r | |
64 | Arguments:\r | |
65 | \r | |
66 | Address - GC_TODO: add argument description\r | |
67 | Data - GC_TODO: add argument description\r | |
68 | \r | |
69 | Returns:\r | |
70 | \r | |
71 | GC_TODO: add return values\r | |
72 | \r | |
73 | --*/\r | |
74 | {\r | |
75 | IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));\r | |
76 | IoWrite8 (PCAT_RTC_DATA_REGISTER, Data);\r | |
77 | }\r | |
78 | \r | |
79 | EFI_STATUS\r | |
80 | PcRtcInit (\r | |
81 | IN PC_RTC_MODULE_GLOBALS *Global\r | |
82 | )\r | |
83 | /*++\r | |
84 | \r | |
85 | Routine Description:\r | |
86 | \r | |
87 | GC_TODO: Add function description\r | |
88 | \r | |
89 | Arguments:\r | |
90 | \r | |
91 | Global - GC_TODO: add argument description\r | |
92 | \r | |
93 | Returns:\r | |
94 | \r | |
95 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r | |
96 | EFI_SUCCESS - GC_TODO: Add description for return value\r | |
97 | \r | |
98 | --*/\r | |
99 | {\r | |
100 | EFI_STATUS Status;\r | |
101 | RTC_REGISTER_A RegisterA;\r | |
102 | RTC_REGISTER_B RegisterB;\r | |
103 | RTC_REGISTER_D RegisterD;\r | |
104 | UINT8 Century;\r | |
105 | EFI_TIME Time;\r | |
ec35e997 LG |
106 | UINTN DataSize;\r |
107 | UINT32 TimerVar;\r | |
8cd4d17c | 108 | \r |
109 | //\r | |
110 | // Acquire RTC Lock to make access to RTC atomic\r | |
111 | //\r | |
112 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
113 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
114 | if (!EfiAtRuntime ()) {\r | |
115 | EfiAcquireLock (&Global->RtcLock);\r | |
116 | }\r | |
117 | //\r | |
118 | // Initialize RTC Register\r | |
119 | //\r | |
120 | // Make sure Division Chain is properly configured,\r | |
121 | // or RTC clock won't "tick" -- time won't increment\r | |
122 | //\r | |
123 | RegisterA.Data = RTC_INIT_REGISTER_A;\r | |
124 | RtcWrite (RTC_ADDRESS_REGISTER_A, RegisterA.Data);\r | |
125 | \r | |
126 | //\r | |
127 | // Read Register B\r | |
128 | //\r | |
129 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r | |
130 | \r | |
131 | //\r | |
132 | // Clear RTC flag register\r | |
133 | //\r | |
134 | RtcRead (RTC_ADDRESS_REGISTER_C);\r | |
135 | \r | |
136 | //\r | |
137 | // Clear RTC register D\r | |
138 | //\r | |
139 | RegisterD.Data = RTC_INIT_REGISTER_D;\r | |
140 | RtcWrite (RTC_ADDRESS_REGISTER_D, RegisterD.Data);\r | |
141 | \r | |
142 | //\r | |
143 | // Wait for up to 0.1 seconds for the RTC to be updated\r | |
144 | //\r | |
f8ea3026 | 145 | Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r |
8cd4d17c | 146 | if (EFI_ERROR (Status)) {\r |
147 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
148 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
149 | if (!EfiAtRuntime ()) {\r | |
150 | EfiReleaseLock (&Global->RtcLock);\r | |
151 | }\r | |
152 | return EFI_DEVICE_ERROR;\r | |
153 | }\r | |
154 | //\r | |
155 | // Get the Time/Date/Daylight Savings values.\r | |
156 | //\r | |
157 | Time.Second = RtcRead (RTC_ADDRESS_SECONDS);\r | |
158 | Time.Minute = RtcRead (RTC_ADDRESS_MINUTES);\r | |
159 | Time.Hour = RtcRead (RTC_ADDRESS_HOURS);\r | |
160 | Time.Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r | |
161 | Time.Month = RtcRead (RTC_ADDRESS_MONTH);\r | |
162 | Time.Year = RtcRead (RTC_ADDRESS_YEAR);\r | |
163 | \r | |
8cd4d17c | 164 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
254ba247 | 165 | Century = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);\r |
8cd4d17c | 166 | } else {\r |
254ba247 | 167 | Century = RtcRead (RTC_ADDRESS_CENTURY);\r |
8cd4d17c | 168 | }\r |
169 | \r | |
8cd4d17c | 170 | //\r |
171 | // Set RTC configuration after get original time\r | |
ec35e997 | 172 | // The value of bit AIE should be reserved.\r |
8cd4d17c | 173 | //\r |
f7033880 | 174 | RtcWrite (RTC_ADDRESS_REGISTER_B, (UINT8)(RTC_INIT_REGISTER_B | (RegisterB.Data & BIT5)));\r |
8cd4d17c | 175 | \r |
176 | //\r | |
177 | // Release RTC Lock.\r | |
178 | //\r | |
179 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
180 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
254ba247 | 181 | //\r |
8cd4d17c | 182 | if (!EfiAtRuntime ()) {\r |
183 | EfiReleaseLock (&Global->RtcLock);\r | |
184 | }\r | |
254ba247 | 185 | \r |
8cd4d17c | 186 | //\r |
187 | // Validate time fields\r | |
188 | //\r | |
254ba247 | 189 | Status = ConvertRtcTimeToEfiTime (&Time, Century, RegisterB);\r |
190 | if (!EFI_ERROR (Status)) {\r | |
191 | Status = RtcTimeFieldsValid (&Time);\r | |
192 | }\r | |
8cd4d17c | 193 | if (EFI_ERROR (Status)) {\r |
194 | Time.Second = RTC_INIT_SECOND;\r | |
195 | Time.Minute = RTC_INIT_MINUTE;\r | |
196 | Time.Hour = RTC_INIT_HOUR;\r | |
197 | Time.Day = RTC_INIT_DAY;\r | |
198 | Time.Month = RTC_INIT_MONTH;\r | |
199 | Time.Year = RTC_INIT_YEAR;\r | |
200 | }\r | |
201 | //\r | |
ec35e997 LG |
202 | // Get the data of Daylight saving and time zone, if they have been\r |
203 | // stored in NV variable during previous boot.\r | |
204 | //\r | |
205 | DataSize = sizeof (UINT32);\r | |
206 | Status = EfiGetVariable (\r | |
207 | L"TimerVar",\r | |
208 | &gEfiGenericPlatformVariableGuid,\r | |
209 | NULL,\r | |
210 | &DataSize,\r | |
211 | (VOID *) &TimerVar\r | |
212 | );\r | |
213 | if (!EFI_ERROR (Status)) {\r | |
214 | Global->SavedTimeZone = (INT16) TimerVar;\r | |
215 | Global->Daylight = (UINT8) (TimerVar >> 16);\r | |
216 | \r | |
217 | Time.TimeZone = Global->SavedTimeZone;\r | |
218 | Time.Daylight = Global->Daylight;\r | |
219 | }\r | |
220 | //\r | |
8cd4d17c | 221 | // Reset time value according to new RTC configuration\r |
222 | //\r | |
223 | PcRtcSetTime (&Time, Global);\r | |
224 | \r | |
225 | return EFI_SUCCESS;\r | |
226 | }\r | |
227 | \r | |
228 | EFI_STATUS\r | |
229 | PcRtcGetTime (\r | |
230 | OUT EFI_TIME *Time,\r | |
231 | IN EFI_TIME_CAPABILITIES *Capabilities,\r | |
232 | IN PC_RTC_MODULE_GLOBALS *Global\r | |
233 | )\r | |
234 | /*++\r | |
235 | \r | |
236 | Routine Description:\r | |
237 | \r | |
238 | Arguments:\r | |
239 | \r | |
240 | Returns:\r | |
241 | --*/\r | |
242 | // GC_TODO: Time - add argument and description to function comment\r | |
243 | // GC_TODO: Capabilities - add argument and description to function comment\r | |
244 | // GC_TODO: Global - add argument and description to function comment\r | |
245 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
246 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
247 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
248 | {\r | |
249 | EFI_STATUS Status;\r | |
250 | RTC_REGISTER_B RegisterB;\r | |
251 | UINT8 Century;\r | |
252 | \r | |
253 | //\r | |
254 | // Check parameters for null pointer\r | |
255 | //\r | |
256 | if (Time == NULL) {\r | |
257 | return EFI_INVALID_PARAMETER;\r | |
258 | \r | |
259 | }\r | |
260 | //\r | |
261 | // Acquire RTC Lock to make access to RTC atomic\r | |
262 | //\r | |
263 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
264 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
265 | if (!EfiAtRuntime ()) {\r | |
266 | EfiAcquireLock (&Global->RtcLock);\r | |
267 | }\r | |
268 | //\r | |
269 | // Wait for up to 0.1 seconds for the RTC to be updated\r | |
270 | //\r | |
f8ea3026 | 271 | Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r |
8cd4d17c | 272 | if (EFI_ERROR (Status)) {\r |
273 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
274 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
275 | if (!EfiAtRuntime ()) {\r | |
276 | EfiReleaseLock (&Global->RtcLock);\r | |
277 | }\r | |
278 | return Status;\r | |
279 | }\r | |
280 | //\r | |
281 | // Read Register B\r | |
282 | //\r | |
283 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r | |
284 | \r | |
285 | //\r | |
286 | // Get the Time/Date/Daylight Savings values.\r | |
287 | //\r | |
288 | Time->Second = RtcRead (RTC_ADDRESS_SECONDS);\r | |
289 | Time->Minute = RtcRead (RTC_ADDRESS_MINUTES);\r | |
290 | Time->Hour = RtcRead (RTC_ADDRESS_HOURS);\r | |
291 | Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r | |
292 | Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r | |
293 | Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r | |
294 | \r | |
8cd4d17c | 295 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
254ba247 | 296 | Century = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);\r |
8cd4d17c | 297 | } else {\r |
254ba247 | 298 | Century = RtcRead (RTC_ADDRESS_CENTURY);\r |
8cd4d17c | 299 | }\r |
300 | \r | |
8cd4d17c | 301 | //\r |
302 | // Release RTC Lock.\r | |
303 | //\r | |
304 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
305 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
306 | if (!EfiAtRuntime ()) {\r | |
307 | EfiReleaseLock (&Global->RtcLock);\r | |
308 | }\r | |
309 | //\r | |
310 | // Get the variable that containts the TimeZone and Daylight fields\r | |
311 | //\r | |
312 | Time->TimeZone = Global->SavedTimeZone;\r | |
313 | Time->Daylight = Global->Daylight;\r | |
314 | \r | |
315 | //\r | |
316 | // Make sure all field values are in correct range\r | |
317 | //\r | |
254ba247 | 318 | Status = ConvertRtcTimeToEfiTime (Time, Century, RegisterB);\r |
319 | if (!EFI_ERROR (Status)) {\r | |
320 | Status = RtcTimeFieldsValid (Time);\r | |
321 | }\r | |
8cd4d17c | 322 | if (EFI_ERROR (Status)) {\r |
323 | return EFI_DEVICE_ERROR;\r | |
324 | }\r | |
325 | //\r | |
326 | // Fill in Capabilities if it was passed in\r | |
327 | //\r | |
328 | if (Capabilities) {\r | |
329 | Capabilities->Resolution = 1;\r | |
330 | //\r | |
331 | // 1 hertz\r | |
332 | //\r | |
333 | Capabilities->Accuracy = 50000000;\r | |
334 | //\r | |
335 | // 50 ppm\r | |
336 | //\r | |
337 | Capabilities->SetsToZero = FALSE;\r | |
338 | }\r | |
339 | \r | |
340 | return EFI_SUCCESS;\r | |
341 | }\r | |
342 | \r | |
343 | EFI_STATUS\r | |
344 | PcRtcSetTime (\r | |
345 | IN EFI_TIME *Time,\r | |
346 | IN PC_RTC_MODULE_GLOBALS *Global\r | |
347 | )\r | |
348 | /*++\r | |
349 | \r | |
350 | Routine Description:\r | |
351 | \r | |
352 | Arguments:\r | |
353 | \r | |
354 | Returns:\r | |
355 | --*/\r | |
356 | // GC_TODO: Time - add argument and description to function comment\r | |
357 | // GC_TODO: Global - add argument and description to function comment\r | |
358 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
359 | {\r | |
360 | EFI_STATUS Status;\r | |
361 | EFI_TIME RtcTime;\r | |
362 | RTC_REGISTER_B RegisterB;\r | |
363 | UINT8 Century;\r | |
ec35e997 | 364 | UINT32 TimerVar;\r |
8cd4d17c | 365 | \r |
366 | if (Time == NULL) {\r | |
367 | return EFI_INVALID_PARAMETER;\r | |
368 | }\r | |
369 | //\r | |
370 | // Make sure that the time fields are valid\r | |
371 | //\r | |
372 | Status = RtcTimeFieldsValid (Time);\r | |
373 | if (EFI_ERROR (Status)) {\r | |
374 | return Status;\r | |
375 | }\r | |
376 | \r | |
377 | CopyMem (&RtcTime, Time, sizeof (EFI_TIME));\r | |
378 | \r | |
379 | //\r | |
380 | // Acquire RTC Lock to make access to RTC atomic\r | |
381 | //\r | |
382 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
383 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
384 | if (!EfiAtRuntime ()) {\r | |
385 | EfiAcquireLock (&Global->RtcLock);\r | |
386 | }\r | |
387 | //\r | |
388 | // Wait for up to 0.1 seconds for the RTC to be updated\r | |
389 | //\r | |
f8ea3026 | 390 | Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r |
8cd4d17c | 391 | if (EFI_ERROR (Status)) {\r |
392 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
393 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
394 | if (!EfiAtRuntime ()) {\r | |
395 | EfiReleaseLock (&Global->RtcLock);\r | |
396 | }\r | |
397 | return Status;\r | |
398 | }\r | |
399 | //\r | |
400 | // Read Register B, and inhibit updates of the RTC\r | |
401 | //\r | |
402 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r | |
403 | RegisterB.Bits.SET = 1;\r | |
404 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r | |
405 | \r | |
406 | ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r | |
407 | \r | |
408 | RtcWrite (RTC_ADDRESS_SECONDS, RtcTime.Second);\r | |
409 | RtcWrite (RTC_ADDRESS_MINUTES, RtcTime.Minute);\r | |
410 | RtcWrite (RTC_ADDRESS_HOURS, RtcTime.Hour);\r | |
411 | RtcWrite (RTC_ADDRESS_DAY_OF_THE_MONTH, RtcTime.Day);\r | |
412 | RtcWrite (RTC_ADDRESS_MONTH, RtcTime.Month);\r | |
413 | RtcWrite (RTC_ADDRESS_YEAR, (UINT8) RtcTime.Year);\r | |
414 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r | |
415 | Century = (UINT8) ((Century & 0x7f) | (RtcRead (RTC_ADDRESS_CENTURY) & 0x80));\r | |
416 | }\r | |
417 | \r | |
418 | RtcWrite (RTC_ADDRESS_CENTURY, Century);\r | |
419 | \r | |
420 | //\r | |
421 | // Allow updates of the RTC registers\r | |
422 | //\r | |
423 | RegisterB.Bits.SET = 0;\r | |
424 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r | |
425 | \r | |
426 | //\r | |
427 | // Release RTC Lock.\r | |
428 | //\r | |
429 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
430 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
431 | if (!EfiAtRuntime ()) {\r | |
432 | EfiReleaseLock (&Global->RtcLock);\r | |
433 | }\r | |
434 | //\r | |
435 | // Set the variable that containts the TimeZone and Daylight fields\r | |
436 | //\r | |
437 | Global->SavedTimeZone = Time->TimeZone;\r | |
438 | Global->Daylight = Time->Daylight;\r | |
ec35e997 LG |
439 | \r |
440 | TimerVar = Time->Daylight;\r | |
441 | TimerVar = (UINT32) ((TimerVar << 16) | Time->TimeZone);\r | |
442 | Status = EfiSetVariable (\r | |
443 | L"TimerVar",\r | |
444 | &gEfiGenericPlatformVariableGuid,\r | |
445 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
446 | sizeof (TimerVar),\r | |
447 | &TimerVar\r | |
448 | );\r | |
449 | ASSERT_EFI_ERROR (Status);\r | |
450 | \r | |
451 | return EFI_SUCCESS;\r | |
8cd4d17c | 452 | }\r |
453 | \r | |
454 | EFI_STATUS\r | |
455 | PcRtcGetWakeupTime (\r | |
456 | OUT BOOLEAN *Enabled,\r | |
457 | OUT BOOLEAN *Pending,\r | |
458 | OUT EFI_TIME *Time,\r | |
459 | IN PC_RTC_MODULE_GLOBALS *Global\r | |
460 | )\r | |
461 | /*++\r | |
462 | \r | |
463 | Routine Description:\r | |
464 | \r | |
465 | Arguments:\r | |
466 | \r | |
467 | \r | |
468 | \r | |
469 | Returns:\r | |
470 | --*/\r | |
471 | // GC_TODO: Enabled - add argument and description to function comment\r | |
472 | // GC_TODO: Pending - add argument and description to function comment\r | |
473 | // GC_TODO: Time - add argument and description to function comment\r | |
474 | // GC_TODO: Global - add argument and description to function comment\r | |
475 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
476 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
477 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
478 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
479 | {\r | |
480 | EFI_STATUS Status;\r | |
481 | RTC_REGISTER_B RegisterB;\r | |
482 | RTC_REGISTER_C RegisterC;\r | |
483 | UINT8 Century;\r | |
484 | \r | |
485 | //\r | |
486 | // Check paramters for null pointers\r | |
487 | //\r | |
488 | if ((Enabled == NULL) || (Pending == NULL) || (Time == NULL)) {\r | |
489 | return EFI_INVALID_PARAMETER;\r | |
490 | \r | |
491 | }\r | |
492 | //\r | |
493 | // Acquire RTC Lock to make access to RTC atomic\r | |
494 | //\r | |
495 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
496 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
497 | if (!EfiAtRuntime ()) {\r | |
498 | EfiAcquireLock (&Global->RtcLock);\r | |
499 | }\r | |
500 | //\r | |
501 | // Wait for up to 0.1 seconds for the RTC to be updated\r | |
502 | //\r | |
f8ea3026 | 503 | Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r |
8cd4d17c | 504 | if (EFI_ERROR (Status)) {\r |
505 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
506 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
507 | if (!EfiAtRuntime ()) {\r | |
508 | EfiReleaseLock (&Global->RtcLock);\r | |
509 | }\r | |
510 | return EFI_DEVICE_ERROR;\r | |
511 | }\r | |
512 | //\r | |
513 | // Read Register B and Register C\r | |
514 | //\r | |
515 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r | |
516 | RegisterC.Data = RtcRead (RTC_ADDRESS_REGISTER_C);\r | |
517 | \r | |
518 | //\r | |
519 | // Get the Time/Date/Daylight Savings values.\r | |
520 | //\r | |
521 | *Enabled = RegisterB.Bits.AIE;\r | |
522 | if (*Enabled) {\r | |
523 | Time->Second = RtcRead (RTC_ADDRESS_SECONDS_ALARM);\r | |
524 | Time->Minute = RtcRead (RTC_ADDRESS_MINUTES_ALARM);\r | |
525 | Time->Hour = RtcRead (RTC_ADDRESS_HOURS_ALARM);\r | |
526 | Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r | |
527 | Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r | |
528 | Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r | |
529 | } else {\r | |
530 | Time->Second = 0;\r | |
531 | Time->Minute = 0;\r | |
532 | Time->Hour = 0;\r | |
533 | Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r | |
534 | Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r | |
535 | Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r | |
536 | }\r | |
537 | \r | |
8cd4d17c | 538 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
254ba247 | 539 | Century = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);\r |
8cd4d17c | 540 | } else {\r |
254ba247 | 541 | Century = RtcRead (RTC_ADDRESS_CENTURY);\r |
8cd4d17c | 542 | }\r |
543 | \r | |
8cd4d17c | 544 | //\r |
545 | // Release RTC Lock.\r | |
546 | //\r | |
547 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
548 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
549 | if (!EfiAtRuntime ()) {\r | |
550 | EfiReleaseLock (&Global->RtcLock);\r | |
551 | }\r | |
552 | //\r | |
553 | // Make sure all field values are in correct range\r | |
554 | //\r | |
254ba247 | 555 | Status = ConvertRtcTimeToEfiTime (Time, Century, RegisterB);\r |
556 | if (!EFI_ERROR (Status)) {\r | |
557 | Status = RtcTimeFieldsValid (Time);\r | |
558 | }\r | |
8cd4d17c | 559 | if (EFI_ERROR (Status)) {\r |
560 | return EFI_DEVICE_ERROR;\r | |
561 | }\r | |
562 | \r | |
563 | *Pending = RegisterC.Bits.AF;\r | |
564 | \r | |
565 | return EFI_SUCCESS;\r | |
566 | }\r | |
567 | \r | |
568 | EFI_STATUS\r | |
569 | PcRtcSetWakeupTime (\r | |
570 | IN BOOLEAN Enable,\r | |
571 | OUT EFI_TIME *Time,\r | |
572 | IN PC_RTC_MODULE_GLOBALS *Global\r | |
573 | )\r | |
574 | /*++\r | |
575 | \r | |
576 | Routine Description:\r | |
577 | \r | |
578 | Arguments:\r | |
579 | \r | |
580 | \r | |
581 | \r | |
582 | Returns:\r | |
583 | --*/\r | |
584 | // GC_TODO: Enable - add argument and description to function comment\r | |
585 | // GC_TODO: Time - add argument and description to function comment\r | |
586 | // GC_TODO: Global - add argument and description to function comment\r | |
587 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
588 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
589 | // GC_TODO: EFI_UNSUPPORTED - add return value to function comment\r | |
590 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
591 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
592 | {\r | |
593 | EFI_STATUS Status;\r | |
594 | EFI_TIME RtcTime;\r | |
595 | RTC_REGISTER_B RegisterB;\r | |
596 | UINT8 Century;\r | |
597 | EFI_TIME_CAPABILITIES Capabilities;\r | |
598 | \r | |
599 | if (Enable) {\r | |
600 | \r | |
601 | if (Time == NULL) {\r | |
602 | return EFI_INVALID_PARAMETER;\r | |
603 | }\r | |
604 | //\r | |
605 | // Make sure that the time fields are valid\r | |
606 | //\r | |
607 | Status = RtcTimeFieldsValid (Time);\r | |
608 | if (EFI_ERROR (Status)) {\r | |
609 | return EFI_INVALID_PARAMETER;\r | |
610 | }\r | |
611 | //\r | |
612 | // Just support set alarm time within 24 hours\r | |
613 | //\r | |
614 | PcRtcGetTime (&RtcTime, &Capabilities, Global);\r | |
615 | if (!IsWithinOneDay (&RtcTime, Time)) {\r | |
616 | return EFI_UNSUPPORTED;\r | |
617 | }\r | |
618 | //\r | |
619 | // Make a local copy of the time and date\r | |
620 | //\r | |
621 | CopyMem (&RtcTime, Time, sizeof (EFI_TIME));\r | |
622 | \r | |
623 | }\r | |
624 | //\r | |
625 | // Acquire RTC Lock to make access to RTC atomic\r | |
626 | //\r | |
627 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r | |
628 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r | |
629 | if (!EfiAtRuntime ()) {\r | |
630 | EfiAcquireLock (&Global->RtcLock);\r | |
631 | }\r | |
632 | //\r | |
633 | // Wait for up to 0.1 seconds for the RTC to be updated\r | |
634 | //\r | |
f8ea3026 | 635 | Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r |
8cd4d17c | 636 | if (EFI_ERROR (Status)) {\r |
637 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
638 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
639 | if (!EfiAtRuntime ()) {\r | |
640 | EfiReleaseLock (&Global->RtcLock);\r | |
641 | }\r | |
642 | return EFI_DEVICE_ERROR;\r | |
643 | }\r | |
644 | //\r | |
645 | // Read Register B, and inhibit updates of the RTC\r | |
646 | //\r | |
647 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r | |
648 | \r | |
649 | RegisterB.Bits.SET = 1;\r | |
650 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r | |
651 | \r | |
652 | if (Enable) {\r | |
653 | ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r | |
654 | \r | |
655 | //\r | |
656 | // Set RTC alarm time\r | |
657 | //\r | |
658 | RtcWrite (RTC_ADDRESS_SECONDS_ALARM, RtcTime.Second);\r | |
659 | RtcWrite (RTC_ADDRESS_MINUTES_ALARM, RtcTime.Minute);\r | |
660 | RtcWrite (RTC_ADDRESS_HOURS_ALARM, RtcTime.Hour);\r | |
661 | \r | |
662 | RegisterB.Bits.AIE = 1;\r | |
663 | \r | |
664 | } else {\r | |
665 | RegisterB.Bits.AIE = 0;\r | |
666 | }\r | |
667 | //\r | |
668 | // Allow updates of the RTC registers\r | |
669 | //\r | |
670 | RegisterB.Bits.SET = 0;\r | |
671 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r | |
672 | \r | |
673 | //\r | |
674 | // Release RTC Lock.\r | |
675 | //\r | |
676 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r | |
677 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r | |
678 | if (!EfiAtRuntime ()) {\r | |
679 | EfiReleaseLock (&Global->RtcLock);\r | |
680 | }\r | |
681 | return EFI_SUCCESS;\r | |
682 | }\r | |
683 | \r | |
684 | EFI_STATUS\r | |
685 | RtcTestCenturyRegister (\r | |
686 | VOID\r | |
687 | )\r | |
688 | /*++\r | |
689 | \r | |
690 | Routine Description:\r | |
691 | \r | |
692 | Arguments:\r | |
693 | \r | |
694 | \r | |
695 | \r | |
696 | Returns:\r | |
697 | --*/\r | |
698 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
699 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
700 | {\r | |
701 | UINT8 Century;\r | |
702 | UINT8 Temp;\r | |
703 | \r | |
704 | Century = RtcRead (RTC_ADDRESS_CENTURY);\r | |
705 | //\r | |
706 | // RtcWrite (RTC_ADDRESS_CENTURY, 0x00);\r | |
707 | //\r | |
708 | Temp = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);\r | |
709 | RtcWrite (RTC_ADDRESS_CENTURY, Century);\r | |
710 | if (Temp == 0x19 || Temp == 0x20) {\r | |
711 | return EFI_SUCCESS;\r | |
712 | }\r | |
713 | \r | |
714 | return EFI_DEVICE_ERROR;\r | |
715 | }\r | |
716 | \r | |
254ba247 | 717 | /**\r |
718 | Checks an 8-bit BCD value, and converts to an 8-bit value if valid.\r | |
719 | \r | |
720 | This function checks the 8-bit BCD value specified by Value.\r | |
721 | If valid, the function converts it to an 8-bit value and returns it.\r | |
722 | Otherwise, return 0xff.\r | |
723 | \r | |
724 | @param Value The 8-bit BCD value to check and convert\r | |
725 | \r | |
726 | @return The 8-bit value converted.\r | |
727 | 0xff if Value is invalid.\r | |
728 | \r | |
729 | **/\r | |
730 | UINT8\r | |
731 | CheckAndConvertBcd8ToDecimal8 (\r | |
732 | IN UINT8 Value\r | |
8cd4d17c | 733 | )\r |
254ba247 | 734 | {\r |
735 | if ((Value < 0xa0) && ((Value & 0xf) < 0xa)) {\r | |
736 | return BcdToDecimal8 (Value);\r | |
737 | }\r | |
8cd4d17c | 738 | \r |
254ba247 | 739 | return 0xff;\r |
740 | }\r | |
8cd4d17c | 741 | \r |
254ba247 | 742 | /**\r |
743 | Converts time read from RTC to EFI_TIME format defined by UEFI spec.\r | |
8cd4d17c | 744 | \r |
254ba247 | 745 | This function converts raw time data read from RTC to the EFI_TIME format\r |
746 | defined by UEFI spec.\r | |
747 | If data mode of RTC is BCD, then converts it to decimal,\r | |
748 | If RTC is in 12-hour format, then converts it to 24-hour format.\r | |
8cd4d17c | 749 | \r |
254ba247 | 750 | @param Time On input, the time data read from RTC to convert\r |
751 | On output, the time converted to UEFI format\r | |
752 | @param Century Value of century read from RTC.\r | |
753 | @param RegisterB Value of Register B of RTC, indicating data mode\r | |
754 | and hour format.\r | |
8cd4d17c | 755 | \r |
254ba247 | 756 | **/\r |
757 | EFI_STATUS\r | |
758 | ConvertRtcTimeToEfiTime (\r | |
759 | IN OUT EFI_TIME *Time,\r | |
760 | IN UINT8 Century,\r | |
761 | IN RTC_REGISTER_B RegisterB\r | |
762 | )\r | |
8cd4d17c | 763 | {\r |
764 | BOOLEAN PM;\r | |
765 | \r | |
766 | if ((Time->Hour) & 0x80) {\r | |
767 | PM = TRUE;\r | |
768 | } else {\r | |
769 | PM = FALSE;\r | |
770 | }\r | |
771 | \r | |
772 | Time->Hour = (UINT8) (Time->Hour & 0x7f);\r | |
773 | \r | |
774 | if (RegisterB.Bits.DM == 0) {\r | |
254ba247 | 775 | Time->Year = CheckAndConvertBcd8ToDecimal8 ((UINT8) Time->Year);\r |
776 | Time->Month = CheckAndConvertBcd8ToDecimal8 (Time->Month);\r | |
777 | Time->Day = CheckAndConvertBcd8ToDecimal8 (Time->Day);\r | |
778 | Time->Hour = CheckAndConvertBcd8ToDecimal8 (Time->Hour);\r | |
779 | Time->Minute = CheckAndConvertBcd8ToDecimal8 (Time->Minute);\r | |
780 | Time->Second = CheckAndConvertBcd8ToDecimal8 (Time->Second);\r | |
781 | Century = CheckAndConvertBcd8ToDecimal8 (Century);\r | |
782 | }\r | |
783 | \r | |
784 | if (Time->Year == 0xff || Time->Month == 0xff || Time->Day == 0xff ||\r | |
785 | Time->Hour == 0xff || Time->Minute == 0xff || Time->Second == 0xff ||\r | |
786 | Century == 0xff) {\r | |
787 | return EFI_INVALID_PARAMETER;\r | |
8cd4d17c | 788 | }\r |
254ba247 | 789 | \r |
790 | Time->Year = (UINT16) (Century * 100 + Time->Year);\r | |
791 | \r | |
8cd4d17c | 792 | //\r |
793 | // If time is in 12 hour format, convert it to 24 hour format\r | |
794 | //\r | |
795 | if (RegisterB.Bits.MIL == 0) {\r | |
796 | if (PM && Time->Hour < 12) {\r | |
797 | Time->Hour = (UINT8) (Time->Hour + 12);\r | |
798 | }\r | |
799 | \r | |
800 | if (!PM && Time->Hour == 12) {\r | |
801 | Time->Hour = 0;\r | |
802 | }\r | |
803 | }\r | |
804 | \r | |
805 | Time->Nanosecond = 0;\r | |
806 | Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r | |
807 | Time->Daylight = 0;\r | |
254ba247 | 808 | \r |
809 | return EFI_SUCCESS;\r | |
8cd4d17c | 810 | }\r |
811 | \r | |
812 | EFI_STATUS\r | |
813 | RtcWaitToUpdate (\r | |
814 | UINTN Timeout\r | |
815 | )\r | |
816 | /*++\r | |
817 | \r | |
818 | Routine Description:\r | |
819 | \r | |
820 | Arguments:\r | |
821 | \r | |
822 | \r | |
823 | Returns:\r | |
824 | --*/\r | |
825 | // GC_TODO: Timeout - add argument and description to function comment\r | |
826 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
827 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r | |
828 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
829 | {\r | |
830 | RTC_REGISTER_A RegisterA;\r | |
831 | RTC_REGISTER_D RegisterD;\r | |
832 | \r | |
833 | //\r | |
834 | // See if the RTC is functioning correctly\r | |
835 | //\r | |
836 | RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);\r | |
837 | \r | |
838 | if (RegisterD.Bits.VRT == 0) {\r | |
839 | return EFI_DEVICE_ERROR;\r | |
840 | }\r | |
841 | //\r | |
842 | // Wait for up to 0.1 seconds for the RTC to be ready.\r | |
843 | //\r | |
844 | Timeout = (Timeout / 10) + 1;\r | |
845 | RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);\r | |
846 | while (RegisterA.Bits.UIP == 1 && Timeout > 0) {\r | |
847 | MicroSecondDelay (10);\r | |
848 | RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);\r | |
849 | Timeout--;\r | |
850 | }\r | |
851 | \r | |
852 | RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);\r | |
853 | if (Timeout == 0 || RegisterD.Bits.VRT == 0) {\r | |
854 | return EFI_DEVICE_ERROR;\r | |
855 | }\r | |
856 | \r | |
857 | return EFI_SUCCESS;\r | |
858 | }\r | |
859 | \r | |
860 | EFI_STATUS\r | |
861 | RtcTimeFieldsValid (\r | |
862 | IN EFI_TIME *Time\r | |
863 | )\r | |
864 | /*++\r | |
865 | \r | |
866 | Routine Description:\r | |
867 | \r | |
868 | Arguments:\r | |
869 | \r | |
870 | Returns:\r | |
871 | --*/\r | |
872 | // GC_TODO: Time - add argument and description to function comment\r | |
873 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r | |
874 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r | |
875 | {\r | |
876 | if (Time->Year < 1998 ||\r | |
877 | Time->Year > 2099 ||\r | |
878 | Time->Month < 1 ||\r | |
879 | Time->Month > 12 ||\r | |
880 | (!DayValid (Time)) ||\r | |
881 | Time->Hour > 23 ||\r | |
882 | Time->Minute > 59 ||\r | |
883 | Time->Second > 59 ||\r | |
884 | Time->Nanosecond > 999999999 ||\r | |
885 | (!(Time->TimeZone == EFI_UNSPECIFIED_TIMEZONE || (Time->TimeZone >= -1440 && Time->TimeZone <= 1440))) ||\r | |
886 | (Time->Daylight & (~(EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT)))\r | |
887 | ) {\r | |
888 | return EFI_INVALID_PARAMETER;\r | |
889 | }\r | |
890 | \r | |
891 | return EFI_SUCCESS;\r | |
892 | }\r | |
893 | \r | |
894 | BOOLEAN\r | |
895 | DayValid (\r | |
896 | IN EFI_TIME *Time\r | |
897 | )\r | |
898 | /*++\r | |
899 | \r | |
900 | Routine Description:\r | |
901 | \r | |
902 | GC_TODO: Add function description\r | |
903 | \r | |
904 | Arguments:\r | |
905 | \r | |
906 | Time - GC_TODO: add argument description\r | |
907 | \r | |
908 | Returns:\r | |
909 | \r | |
910 | GC_TODO: add return values\r | |
911 | \r | |
912 | --*/\r | |
913 | {\r | |
914 | INTN DayOfMonth[12];\r | |
915 | \r | |
916 | DayOfMonth[0] = 31;\r | |
917 | DayOfMonth[1] = 29;\r | |
918 | DayOfMonth[2] = 31;\r | |
919 | DayOfMonth[3] = 30;\r | |
920 | DayOfMonth[4] = 31;\r | |
921 | DayOfMonth[5] = 30;\r | |
922 | DayOfMonth[6] = 31;\r | |
923 | DayOfMonth[7] = 31;\r | |
924 | DayOfMonth[8] = 30;\r | |
925 | DayOfMonth[9] = 31;\r | |
926 | DayOfMonth[10] = 30;\r | |
927 | DayOfMonth[11] = 31;\r | |
928 | \r | |
929 | if (Time->Day < 1 ||\r | |
930 | Time->Day > DayOfMonth[Time->Month - 1] ||\r | |
931 | (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))\r | |
932 | ) {\r | |
933 | return FALSE;\r | |
934 | }\r | |
935 | \r | |
936 | return TRUE;\r | |
937 | }\r | |
938 | \r | |
939 | BOOLEAN\r | |
940 | IsLeapYear (\r | |
941 | IN EFI_TIME *Time\r | |
942 | )\r | |
943 | /*++\r | |
944 | \r | |
945 | Routine Description:\r | |
946 | \r | |
947 | GC_TODO: Add function description\r | |
948 | \r | |
949 | Arguments:\r | |
950 | \r | |
951 | Time - GC_TODO: add argument description\r | |
952 | \r | |
953 | Returns:\r | |
954 | \r | |
955 | GC_TODO: add return values\r | |
956 | \r | |
957 | --*/\r | |
958 | {\r | |
959 | if (Time->Year % 4 == 0) {\r | |
960 | if (Time->Year % 100 == 0) {\r | |
961 | if (Time->Year % 400 == 0) {\r | |
962 | return TRUE;\r | |
963 | } else {\r | |
964 | return FALSE;\r | |
965 | }\r | |
966 | } else {\r | |
967 | return TRUE;\r | |
968 | }\r | |
969 | } else {\r | |
970 | return FALSE;\r | |
971 | }\r | |
972 | }\r | |
973 | \r | |
974 | VOID\r | |
975 | ConvertEfiTimeToRtcTime (\r | |
976 | IN EFI_TIME *Time,\r | |
977 | IN RTC_REGISTER_B RegisterB,\r | |
978 | IN UINT8 *Century\r | |
979 | )\r | |
980 | /*++\r | |
981 | \r | |
982 | Routine Description:\r | |
983 | \r | |
984 | Arguments:\r | |
985 | \r | |
986 | \r | |
987 | Returns:\r | |
988 | --*/\r | |
989 | // GC_TODO: Time - add argument and description to function comment\r | |
990 | // GC_TODO: RegisterB - add argument and description to function comment\r | |
991 | // GC_TODO: Century - add argument and description to function comment\r | |
992 | {\r | |
993 | BOOLEAN PM;\r | |
994 | \r | |
995 | PM = TRUE;\r | |
996 | //\r | |
997 | // Adjust hour field if RTC in in 12 hour mode\r | |
998 | //\r | |
999 | if (RegisterB.Bits.MIL == 0) {\r | |
1000 | if (Time->Hour < 12) {\r | |
1001 | PM = FALSE;\r | |
1002 | }\r | |
1003 | \r | |
1004 | if (Time->Hour >= 13) {\r | |
1005 | Time->Hour = (UINT8) (Time->Hour - 12);\r | |
1006 | } else if (Time->Hour == 0) {\r | |
1007 | Time->Hour = 12;\r | |
1008 | }\r | |
1009 | }\r | |
1010 | //\r | |
1011 | // Set the Time/Date/Daylight Savings values.\r | |
1012 | //\r | |
1013 | *Century = DecimalToBcd8 ((UINT8) (Time->Year / 100));\r | |
1014 | \r | |
1015 | Time->Year = (UINT16) (Time->Year % 100);\r | |
1016 | \r | |
1017 | if (RegisterB.Bits.DM == 0) {\r | |
1018 | Time->Year = DecimalToBcd8 ((UINT8) Time->Year);\r | |
1019 | Time->Month = DecimalToBcd8 (Time->Month);\r | |
1020 | Time->Day = DecimalToBcd8 (Time->Day);\r | |
1021 | Time->Hour = DecimalToBcd8 (Time->Hour);\r | |
1022 | Time->Minute = DecimalToBcd8 (Time->Minute);\r | |
1023 | Time->Second = DecimalToBcd8 (Time->Second);\r | |
1024 | }\r | |
1025 | //\r | |
1026 | // If we are in 12 hour mode and PM is set, then set bit 7 of the Hour field.\r | |
1027 | //\r | |
1028 | if (RegisterB.Bits.MIL == 0 && PM) {\r | |
1029 | Time->Hour = (UINT8) (Time->Hour | 0x80);\r | |
1030 | }\r | |
1031 | }\r | |
1032 | \r | |
8cd4d17c | 1033 | INTN\r |
1034 | CompareHMS (\r | |
1035 | IN EFI_TIME *From,\r | |
1036 | IN EFI_TIME *To\r | |
1037 | )\r | |
1038 | /*++\r | |
1039 | \r | |
1040 | Routine Description:\r | |
1041 | \r | |
1042 | Compare the Hour, Minute and Second of the 'From' time and the 'To' time.\r | |
1043 | Only compare H/M/S in EFI_TIME and ignore other fields here.\r | |
1044 | \r | |
1045 | Arguments:\r | |
1046 | \r | |
1047 | From - the first time\r | |
1048 | To - the second time\r | |
1049 | \r | |
1050 | Returns:\r | |
1051 | \r | |
1052 | >0 : The H/M/S of the 'From' time is later than those of 'To' time\r | |
1053 | ==0 : The H/M/S of the 'From' time is same as those of 'To' time\r | |
1054 | <0 : The H/M/S of the 'From' time is earlier than those of 'To' time\r | |
1055 | \r | |
1056 | --*/\r | |
1057 | {\r | |
1058 | if ((From->Hour > To->Hour) ||\r | |
1059 | ((From->Hour == To->Hour) && (From->Minute > To->Minute)) ||\r | |
1060 | ((From->Hour == To->Hour) && (From->Minute == To->Minute) && (From->Second > To->Second))) {\r | |
1061 | return 1;\r | |
1062 | } else if ((From->Hour == To->Hour) && (From->Minute == To->Minute) && (From->Second == To->Second)) {\r | |
1063 | return 0;\r | |
1064 | } else {\r | |
1065 | return -1;\r | |
1066 | }\r | |
1067 | }\r | |
1068 | \r | |
8cd4d17c | 1069 | BOOLEAN\r |
1070 | IsWithinOneDay (\r | |
1071 | IN EFI_TIME *From,\r | |
1072 | IN EFI_TIME *To\r | |
1073 | )\r | |
1074 | /*++\r | |
1075 | \r | |
1076 | Routine Description:\r | |
1077 | \r | |
1078 | Judge whether two days are adjacent.\r | |
1079 | \r | |
1080 | Arguments:\r | |
1081 | \r | |
1082 | From - the first day\r | |
1083 | To - the second day\r | |
1084 | \r | |
1085 | Returns:\r | |
1086 | \r | |
1087 | TRUE - The interval of two days are within one day.\r | |
1088 | FALSE - The interval of two days exceed ony day or parameter error.\r | |
1089 | \r | |
1090 | --*/\r | |
1091 | {\r | |
1f4cf7b1 | 1092 | UINT8 DayOfMonth[12];\r |
1093 | BOOLEAN Adjacent;\r | |
1094 | \r | |
1095 | DayOfMonth[0] = 31;\r | |
1096 | DayOfMonth[1] = 29;\r | |
1097 | DayOfMonth[2] = 31;\r | |
1098 | DayOfMonth[3] = 30;\r | |
1099 | DayOfMonth[4] = 31;\r | |
1100 | DayOfMonth[5] = 30;\r | |
1101 | DayOfMonth[6] = 31;\r | |
1102 | DayOfMonth[7] = 31;\r | |
1103 | DayOfMonth[8] = 30;\r | |
1104 | DayOfMonth[9] = 31;\r | |
1105 | DayOfMonth[10] = 30;\r | |
1106 | DayOfMonth[11] = 31;\r | |
1107 | \r | |
1108 | Adjacent = FALSE;\r | |
8cd4d17c | 1109 | \r |
1110 | if (From->Year == To->Year) {\r | |
1111 | if (From->Month == To->Month) {\r | |
1112 | if ((From->Day + 1) == To->Day) {\r | |
1113 | if ((CompareHMS(From, To) >= 0)) {\r | |
1114 | Adjacent = TRUE;\r | |
1115 | }\r | |
1116 | } else if (From->Day == To->Day) {\r | |
1117 | if ((CompareHMS(From, To) <= 0)) {\r | |
1118 | Adjacent = TRUE;\r | |
1119 | }\r | |
1120 | }\r | |
1121 | } else if (((From->Month + 1) == To->Month) && (To->Day == 1)) {\r | |
1122 | if ((From->Month == 2) && !IsLeapYear(From)) {\r | |
1123 | if (From->Day == 28) {\r | |
1124 | if ((CompareHMS(From, To) >= 0)) {\r | |
1125 | Adjacent = TRUE;\r | |
1126 | }\r | |
1127 | }\r | |
1128 | } else if (From->Day == DayOfMonth[From->Month - 1]) {\r | |
1129 | if ((CompareHMS(From, To) >= 0)) {\r | |
1130 | Adjacent = TRUE;\r | |
1131 | }\r | |
1132 | }\r | |
1133 | }\r | |
1134 | } else if (((From->Year + 1) == To->Year) &&\r | |
1135 | (From->Month == 12) &&\r | |
1136 | (From->Day == 31) &&\r | |
1137 | (To->Month == 1) &&\r | |
1138 | (To->Day == 1)) {\r | |
1139 | if ((CompareHMS(From, To) >= 0)) {\r | |
1140 | Adjacent = TRUE;\r | |
1141 | }\r | |
1142 | }\r | |
1143 | \r | |
1144 | return Adjacent;\r | |
1145 | }\r | |
1146 | \r |