| 1 | /*++\r |
| 2 | \r |
| 3 | Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved. <BR>\r |
| 4 | This software and associated documentation (if any) is furnished\r |
| 5 | under a license and may only be used or copied in accordance\r |
| 6 | with the terms of the license. Except as permitted by such\r |
| 7 | license, no part of this software or documentation may be\r |
| 8 | reproduced, stored in a retrieval system, or transmitted in any\r |
| 9 | form or by any means without the express written consent of\r |
| 10 | Intel Corporation.\r |
| 11 | \r |
| 12 | \r |
| 13 | \r |
| 14 | Module Name:\r |
| 15 | \r |
| 16 | PcRtc.c\r |
| 17 | \r |
| 18 | Abstract:\r |
| 19 | \r |
| 20 | RTC Architectural Protocol GUID as defined in DxeCis 0.96\r |
| 21 | \r |
| 22 | --*/\r |
| 23 | \r |
| 24 | #include "PcRtc.h"\r |
| 25 | \r |
| 26 | STATIC\r |
| 27 | INTN\r |
| 28 | CompareHMS (\r |
| 29 | IN EFI_TIME *From,\r |
| 30 | IN EFI_TIME *To\r |
| 31 | );\r |
| 32 | \r |
| 33 | STATIC\r |
| 34 | BOOLEAN\r |
| 35 | IsWithinOneDay (\r |
| 36 | IN EFI_TIME *From,\r |
| 37 | IN EFI_TIME *To\r |
| 38 | );\r |
| 39 | \r |
| 40 | STATIC\r |
| 41 | UINT8\r |
| 42 | RtcRead (\r |
| 43 | IN UINT8 Address\r |
| 44 | )\r |
| 45 | /*++\r |
| 46 | \r |
| 47 | Routine Description:\r |
| 48 | \r |
| 49 | GC_TODO: Add function description\r |
| 50 | \r |
| 51 | Arguments:\r |
| 52 | \r |
| 53 | Address - GC_TODO: add argument description\r |
| 54 | \r |
| 55 | Returns:\r |
| 56 | \r |
| 57 | GC_TODO: add return values\r |
| 58 | \r |
| 59 | --*/\r |
| 60 | {\r |
| 61 | IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));\r |
| 62 | return IoRead8 (PCAT_RTC_DATA_REGISTER);\r |
| 63 | }\r |
| 64 | \r |
| 65 | STATIC\r |
| 66 | VOID\r |
| 67 | RtcWrite (\r |
| 68 | IN UINT8 Address,\r |
| 69 | IN UINT8 Data\r |
| 70 | )\r |
| 71 | /*++\r |
| 72 | \r |
| 73 | Routine Description:\r |
| 74 | \r |
| 75 | GC_TODO: Add function description\r |
| 76 | \r |
| 77 | Arguments:\r |
| 78 | \r |
| 79 | Address - GC_TODO: add argument description\r |
| 80 | Data - GC_TODO: add argument description\r |
| 81 | \r |
| 82 | Returns:\r |
| 83 | \r |
| 84 | GC_TODO: add return values\r |
| 85 | \r |
| 86 | --*/\r |
| 87 | {\r |
| 88 | IoWrite8 (PCAT_RTC_ADDRESS_REGISTER, (UINT8) (Address | (UINT8) (IoRead8 (PCAT_RTC_ADDRESS_REGISTER) & 0x80)));\r |
| 89 | IoWrite8 (PCAT_RTC_DATA_REGISTER, Data);\r |
| 90 | }\r |
| 91 | \r |
| 92 | EFI_STATUS\r |
| 93 | PcRtcInit (\r |
| 94 | IN PC_RTC_MODULE_GLOBALS *Global\r |
| 95 | )\r |
| 96 | /*++\r |
| 97 | \r |
| 98 | Routine Description:\r |
| 99 | \r |
| 100 | GC_TODO: Add function description\r |
| 101 | \r |
| 102 | Arguments:\r |
| 103 | \r |
| 104 | Global - GC_TODO: add argument description\r |
| 105 | \r |
| 106 | Returns:\r |
| 107 | \r |
| 108 | EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r |
| 109 | EFI_SUCCESS - GC_TODO: Add description for return value\r |
| 110 | \r |
| 111 | --*/\r |
| 112 | {\r |
| 113 | EFI_STATUS Status;\r |
| 114 | RTC_REGISTER_A RegisterA;\r |
| 115 | RTC_REGISTER_B RegisterB;\r |
| 116 | RTC_REGISTER_D RegisterD;\r |
| 117 | UINT8 Century;\r |
| 118 | EFI_TIME Time;\r |
| 119 | \r |
| 120 | //\r |
| 121 | // Acquire RTC Lock to make access to RTC atomic\r |
| 122 | //\r |
| 123 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 124 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 125 | if (!EfiAtRuntime ()) {\r |
| 126 | EfiAcquireLock (&Global->RtcLock);\r |
| 127 | }\r |
| 128 | //\r |
| 129 | // Initialize RTC Register\r |
| 130 | //\r |
| 131 | // Make sure Division Chain is properly configured,\r |
| 132 | // or RTC clock won't "tick" -- time won't increment\r |
| 133 | //\r |
| 134 | RegisterA.Data = RTC_INIT_REGISTER_A;\r |
| 135 | RtcWrite (RTC_ADDRESS_REGISTER_A, RegisterA.Data);\r |
| 136 | \r |
| 137 | //\r |
| 138 | // Read Register B\r |
| 139 | //\r |
| 140 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r |
| 141 | \r |
| 142 | //\r |
| 143 | // Clear RTC flag register\r |
| 144 | //\r |
| 145 | RtcRead (RTC_ADDRESS_REGISTER_C);\r |
| 146 | \r |
| 147 | //\r |
| 148 | // Clear RTC register D\r |
| 149 | //\r |
| 150 | RegisterD.Data = RTC_INIT_REGISTER_D;\r |
| 151 | RtcWrite (RTC_ADDRESS_REGISTER_D, RegisterD.Data);\r |
| 152 | \r |
| 153 | //\r |
| 154 | // Wait for up to 0.1 seconds for the RTC to be updated\r |
| 155 | //\r |
| 156 | Status = RtcWaitToUpdate (100000);\r |
| 157 | if (EFI_ERROR (Status)) {\r |
| 158 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 159 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 160 | if (!EfiAtRuntime ()) {\r |
| 161 | EfiReleaseLock (&Global->RtcLock);\r |
| 162 | }\r |
| 163 | return EFI_DEVICE_ERROR;\r |
| 164 | }\r |
| 165 | //\r |
| 166 | // Get the Time/Date/Daylight Savings values.\r |
| 167 | //\r |
| 168 | Time.Second = RtcRead (RTC_ADDRESS_SECONDS);\r |
| 169 | Time.Minute = RtcRead (RTC_ADDRESS_MINUTES);\r |
| 170 | Time.Hour = RtcRead (RTC_ADDRESS_HOURS);\r |
| 171 | Time.Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r |
| 172 | Time.Month = RtcRead (RTC_ADDRESS_MONTH);\r |
| 173 | Time.Year = RtcRead (RTC_ADDRESS_YEAR);\r |
| 174 | \r |
| 175 | ConvertRtcTimeToEfiTime (&Time, RegisterB);\r |
| 176 | \r |
| 177 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
| 178 | Century = BcdToDecimal8 ((UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f));\r |
| 179 | } else {\r |
| 180 | Century = BcdToDecimal8 (RtcRead (RTC_ADDRESS_CENTURY));\r |
| 181 | }\r |
| 182 | \r |
| 183 | Time.Year = (UINT16) (Century * 100 + Time.Year);\r |
| 184 | \r |
| 185 | //\r |
| 186 | // Set RTC configuration after get original time\r |
| 187 | //\r |
| 188 | RtcWrite (RTC_ADDRESS_REGISTER_B, RTC_INIT_REGISTER_B);\r |
| 189 | \r |
| 190 | //\r |
| 191 | // Release RTC Lock.\r |
| 192 | //\r |
| 193 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 194 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 195 | if (!EfiAtRuntime ()) {\r |
| 196 | EfiReleaseLock (&Global->RtcLock);\r |
| 197 | }\r |
| 198 | //\r |
| 199 | // Validate time fields\r |
| 200 | //\r |
| 201 | Status = RtcTimeFieldsValid (&Time);\r |
| 202 | if (EFI_ERROR (Status)) {\r |
| 203 | Time.Second = RTC_INIT_SECOND;\r |
| 204 | Time.Minute = RTC_INIT_MINUTE;\r |
| 205 | Time.Hour = RTC_INIT_HOUR;\r |
| 206 | Time.Day = RTC_INIT_DAY;\r |
| 207 | Time.Month = RTC_INIT_MONTH;\r |
| 208 | Time.Year = RTC_INIT_YEAR;\r |
| 209 | }\r |
| 210 | //\r |
| 211 | // Reset time value according to new RTC configuration\r |
| 212 | //\r |
| 213 | PcRtcSetTime (&Time, Global);\r |
| 214 | \r |
| 215 | return EFI_SUCCESS;\r |
| 216 | }\r |
| 217 | \r |
| 218 | EFI_STATUS\r |
| 219 | PcRtcGetTime (\r |
| 220 | OUT EFI_TIME *Time,\r |
| 221 | IN EFI_TIME_CAPABILITIES *Capabilities,\r |
| 222 | IN PC_RTC_MODULE_GLOBALS *Global\r |
| 223 | )\r |
| 224 | /*++\r |
| 225 | \r |
| 226 | Routine Description:\r |
| 227 | \r |
| 228 | Arguments:\r |
| 229 | \r |
| 230 | Returns:\r |
| 231 | --*/\r |
| 232 | // GC_TODO: Time - add argument and description to function comment\r |
| 233 | // GC_TODO: Capabilities - add argument and description to function comment\r |
| 234 | // GC_TODO: Global - add argument and description to function comment\r |
| 235 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r |
| 236 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 237 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r |
| 238 | {\r |
| 239 | EFI_STATUS Status;\r |
| 240 | RTC_REGISTER_B RegisterB;\r |
| 241 | UINT8 Century;\r |
| 242 | \r |
| 243 | //\r |
| 244 | // Check parameters for null pointer\r |
| 245 | //\r |
| 246 | if (Time == NULL) {\r |
| 247 | return EFI_INVALID_PARAMETER;\r |
| 248 | \r |
| 249 | }\r |
| 250 | //\r |
| 251 | // Acquire RTC Lock to make access to RTC atomic\r |
| 252 | //\r |
| 253 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 254 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 255 | if (!EfiAtRuntime ()) {\r |
| 256 | EfiAcquireLock (&Global->RtcLock);\r |
| 257 | }\r |
| 258 | //\r |
| 259 | // Wait for up to 0.1 seconds for the RTC to be updated\r |
| 260 | //\r |
| 261 | Status = RtcWaitToUpdate (100000);\r |
| 262 | if (EFI_ERROR (Status)) {\r |
| 263 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 264 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 265 | if (!EfiAtRuntime ()) {\r |
| 266 | EfiReleaseLock (&Global->RtcLock);\r |
| 267 | }\r |
| 268 | return Status;\r |
| 269 | }\r |
| 270 | //\r |
| 271 | // Read Register B\r |
| 272 | //\r |
| 273 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r |
| 274 | \r |
| 275 | //\r |
| 276 | // Get the Time/Date/Daylight Savings values.\r |
| 277 | //\r |
| 278 | Time->Second = RtcRead (RTC_ADDRESS_SECONDS);\r |
| 279 | Time->Minute = RtcRead (RTC_ADDRESS_MINUTES);\r |
| 280 | Time->Hour = RtcRead (RTC_ADDRESS_HOURS);\r |
| 281 | Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r |
| 282 | Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r |
| 283 | Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r |
| 284 | \r |
| 285 | ConvertRtcTimeToEfiTime (Time, RegisterB);\r |
| 286 | \r |
| 287 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
| 288 | Century = BcdToDecimal8 ((UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f));\r |
| 289 | } else {\r |
| 290 | Century = BcdToDecimal8 (RtcRead (RTC_ADDRESS_CENTURY));\r |
| 291 | }\r |
| 292 | \r |
| 293 | Time->Year = (UINT16) (Century * 100 + Time->Year);\r |
| 294 | \r |
| 295 | //\r |
| 296 | // Release RTC Lock.\r |
| 297 | //\r |
| 298 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 299 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 300 | if (!EfiAtRuntime ()) {\r |
| 301 | EfiReleaseLock (&Global->RtcLock);\r |
| 302 | }\r |
| 303 | //\r |
| 304 | // Get the variable that containts the TimeZone and Daylight fields\r |
| 305 | //\r |
| 306 | Time->TimeZone = Global->SavedTimeZone;\r |
| 307 | Time->Daylight = Global->Daylight;\r |
| 308 | \r |
| 309 | //\r |
| 310 | // Make sure all field values are in correct range\r |
| 311 | //\r |
| 312 | Status = RtcTimeFieldsValid (Time);\r |
| 313 | if (EFI_ERROR (Status)) {\r |
| 314 | return EFI_DEVICE_ERROR;\r |
| 315 | }\r |
| 316 | //\r |
| 317 | // Fill in Capabilities if it was passed in\r |
| 318 | //\r |
| 319 | if (Capabilities) {\r |
| 320 | Capabilities->Resolution = 1;\r |
| 321 | //\r |
| 322 | // 1 hertz\r |
| 323 | //\r |
| 324 | Capabilities->Accuracy = 50000000;\r |
| 325 | //\r |
| 326 | // 50 ppm\r |
| 327 | //\r |
| 328 | Capabilities->SetsToZero = FALSE;\r |
| 329 | }\r |
| 330 | \r |
| 331 | return EFI_SUCCESS;\r |
| 332 | }\r |
| 333 | \r |
| 334 | EFI_STATUS\r |
| 335 | PcRtcSetTime (\r |
| 336 | IN EFI_TIME *Time,\r |
| 337 | IN PC_RTC_MODULE_GLOBALS *Global\r |
| 338 | )\r |
| 339 | /*++\r |
| 340 | \r |
| 341 | Routine Description:\r |
| 342 | \r |
| 343 | Arguments:\r |
| 344 | \r |
| 345 | Returns:\r |
| 346 | --*/\r |
| 347 | // GC_TODO: Time - add argument and description to function comment\r |
| 348 | // GC_TODO: Global - add argument and description to function comment\r |
| 349 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r |
| 350 | {\r |
| 351 | EFI_STATUS Status;\r |
| 352 | EFI_TIME RtcTime;\r |
| 353 | RTC_REGISTER_B RegisterB;\r |
| 354 | UINT8 Century;\r |
| 355 | \r |
| 356 | if (Time == NULL) {\r |
| 357 | return EFI_INVALID_PARAMETER;\r |
| 358 | }\r |
| 359 | //\r |
| 360 | // Make sure that the time fields are valid\r |
| 361 | //\r |
| 362 | Status = RtcTimeFieldsValid (Time);\r |
| 363 | if (EFI_ERROR (Status)) {\r |
| 364 | return Status;\r |
| 365 | }\r |
| 366 | \r |
| 367 | CopyMem (&RtcTime, Time, sizeof (EFI_TIME));\r |
| 368 | \r |
| 369 | //\r |
| 370 | // Acquire RTC Lock to make access to RTC atomic\r |
| 371 | //\r |
| 372 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 373 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 374 | if (!EfiAtRuntime ()) {\r |
| 375 | EfiAcquireLock (&Global->RtcLock);\r |
| 376 | }\r |
| 377 | //\r |
| 378 | // Wait for up to 0.1 seconds for the RTC to be updated\r |
| 379 | //\r |
| 380 | Status = RtcWaitToUpdate (100000);\r |
| 381 | if (EFI_ERROR (Status)) {\r |
| 382 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 383 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 384 | if (!EfiAtRuntime ()) {\r |
| 385 | EfiReleaseLock (&Global->RtcLock);\r |
| 386 | }\r |
| 387 | return Status;\r |
| 388 | }\r |
| 389 | //\r |
| 390 | // Read Register B, and inhibit updates of the RTC\r |
| 391 | //\r |
| 392 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r |
| 393 | RegisterB.Bits.SET = 1;\r |
| 394 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r |
| 395 | \r |
| 396 | ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r |
| 397 | \r |
| 398 | RtcWrite (RTC_ADDRESS_SECONDS, RtcTime.Second);\r |
| 399 | RtcWrite (RTC_ADDRESS_MINUTES, RtcTime.Minute);\r |
| 400 | RtcWrite (RTC_ADDRESS_HOURS, RtcTime.Hour);\r |
| 401 | RtcWrite (RTC_ADDRESS_DAY_OF_THE_MONTH, RtcTime.Day);\r |
| 402 | RtcWrite (RTC_ADDRESS_MONTH, RtcTime.Month);\r |
| 403 | RtcWrite (RTC_ADDRESS_YEAR, (UINT8) RtcTime.Year);\r |
| 404 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
| 405 | Century = (UINT8) ((Century & 0x7f) | (RtcRead (RTC_ADDRESS_CENTURY) & 0x80));\r |
| 406 | }\r |
| 407 | \r |
| 408 | RtcWrite (RTC_ADDRESS_CENTURY, Century);\r |
| 409 | \r |
| 410 | //\r |
| 411 | // Allow updates of the RTC registers\r |
| 412 | //\r |
| 413 | RegisterB.Bits.SET = 0;\r |
| 414 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r |
| 415 | \r |
| 416 | //\r |
| 417 | // Release RTC Lock.\r |
| 418 | //\r |
| 419 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 420 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 421 | if (!EfiAtRuntime ()) {\r |
| 422 | EfiReleaseLock (&Global->RtcLock);\r |
| 423 | }\r |
| 424 | //\r |
| 425 | // Set the variable that containts the TimeZone and Daylight fields\r |
| 426 | //\r |
| 427 | Global->SavedTimeZone = Time->TimeZone;\r |
| 428 | Global->Daylight = Time->Daylight;\r |
| 429 | return Status;\r |
| 430 | }\r |
| 431 | \r |
| 432 | EFI_STATUS\r |
| 433 | PcRtcGetWakeupTime (\r |
| 434 | OUT BOOLEAN *Enabled,\r |
| 435 | OUT BOOLEAN *Pending,\r |
| 436 | OUT EFI_TIME *Time,\r |
| 437 | IN PC_RTC_MODULE_GLOBALS *Global\r |
| 438 | )\r |
| 439 | /*++\r |
| 440 | \r |
| 441 | Routine Description:\r |
| 442 | \r |
| 443 | Arguments:\r |
| 444 | \r |
| 445 | \r |
| 446 | \r |
| 447 | Returns:\r |
| 448 | --*/\r |
| 449 | // GC_TODO: Enabled - add argument and description to function comment\r |
| 450 | // GC_TODO: Pending - add argument and description to function comment\r |
| 451 | // GC_TODO: Time - add argument and description to function comment\r |
| 452 | // GC_TODO: Global - add argument and description to function comment\r |
| 453 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r |
| 454 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 455 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 456 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r |
| 457 | {\r |
| 458 | EFI_STATUS Status;\r |
| 459 | RTC_REGISTER_B RegisterB;\r |
| 460 | RTC_REGISTER_C RegisterC;\r |
| 461 | UINT8 Century;\r |
| 462 | \r |
| 463 | //\r |
| 464 | // Check paramters for null pointers\r |
| 465 | //\r |
| 466 | if ((Enabled == NULL) || (Pending == NULL) || (Time == NULL)) {\r |
| 467 | return EFI_INVALID_PARAMETER;\r |
| 468 | \r |
| 469 | }\r |
| 470 | //\r |
| 471 | // Acquire RTC Lock to make access to RTC atomic\r |
| 472 | //\r |
| 473 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 474 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 475 | if (!EfiAtRuntime ()) {\r |
| 476 | EfiAcquireLock (&Global->RtcLock);\r |
| 477 | }\r |
| 478 | //\r |
| 479 | // Wait for up to 0.1 seconds for the RTC to be updated\r |
| 480 | //\r |
| 481 | Status = RtcWaitToUpdate (100000);\r |
| 482 | if (EFI_ERROR (Status)) {\r |
| 483 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 484 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 485 | if (!EfiAtRuntime ()) {\r |
| 486 | EfiReleaseLock (&Global->RtcLock);\r |
| 487 | }\r |
| 488 | return EFI_DEVICE_ERROR;\r |
| 489 | }\r |
| 490 | //\r |
| 491 | // Read Register B and Register C\r |
| 492 | //\r |
| 493 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r |
| 494 | RegisterC.Data = RtcRead (RTC_ADDRESS_REGISTER_C);\r |
| 495 | \r |
| 496 | //\r |
| 497 | // Get the Time/Date/Daylight Savings values.\r |
| 498 | //\r |
| 499 | *Enabled = RegisterB.Bits.AIE;\r |
| 500 | if (*Enabled) {\r |
| 501 | Time->Second = RtcRead (RTC_ADDRESS_SECONDS_ALARM);\r |
| 502 | Time->Minute = RtcRead (RTC_ADDRESS_MINUTES_ALARM);\r |
| 503 | Time->Hour = RtcRead (RTC_ADDRESS_HOURS_ALARM);\r |
| 504 | Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r |
| 505 | Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r |
| 506 | Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r |
| 507 | } else {\r |
| 508 | Time->Second = 0;\r |
| 509 | Time->Minute = 0;\r |
| 510 | Time->Hour = 0;\r |
| 511 | Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r |
| 512 | Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r |
| 513 | Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r |
| 514 | }\r |
| 515 | \r |
| 516 | ConvertRtcTimeToEfiTime (Time, RegisterB);\r |
| 517 | \r |
| 518 | if (RtcTestCenturyRegister () == EFI_SUCCESS) {\r |
| 519 | Century = BcdToDecimal8 ((UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f));\r |
| 520 | } else {\r |
| 521 | Century = BcdToDecimal8 (RtcRead (RTC_ADDRESS_CENTURY));\r |
| 522 | }\r |
| 523 | \r |
| 524 | Time->Year = (UINT16) (Century * 100 + Time->Year);\r |
| 525 | \r |
| 526 | //\r |
| 527 | // Release RTC Lock.\r |
| 528 | //\r |
| 529 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 530 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 531 | if (!EfiAtRuntime ()) {\r |
| 532 | EfiReleaseLock (&Global->RtcLock);\r |
| 533 | }\r |
| 534 | //\r |
| 535 | // Make sure all field values are in correct range\r |
| 536 | //\r |
| 537 | Status = RtcTimeFieldsValid (Time);\r |
| 538 | if (EFI_ERROR (Status)) {\r |
| 539 | return EFI_DEVICE_ERROR;\r |
| 540 | }\r |
| 541 | \r |
| 542 | *Pending = RegisterC.Bits.AF;\r |
| 543 | \r |
| 544 | return EFI_SUCCESS;\r |
| 545 | }\r |
| 546 | \r |
| 547 | EFI_STATUS\r |
| 548 | PcRtcSetWakeupTime (\r |
| 549 | IN BOOLEAN Enable,\r |
| 550 | OUT EFI_TIME *Time,\r |
| 551 | IN PC_RTC_MODULE_GLOBALS *Global\r |
| 552 | )\r |
| 553 | /*++\r |
| 554 | \r |
| 555 | Routine Description:\r |
| 556 | \r |
| 557 | Arguments:\r |
| 558 | \r |
| 559 | \r |
| 560 | \r |
| 561 | Returns:\r |
| 562 | --*/\r |
| 563 | // GC_TODO: Enable - add argument and description to function comment\r |
| 564 | // GC_TODO: Time - add argument and description to function comment\r |
| 565 | // GC_TODO: Global - add argument and description to function comment\r |
| 566 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r |
| 567 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r |
| 568 | // GC_TODO: EFI_UNSUPPORTED - add return value to function comment\r |
| 569 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 570 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r |
| 571 | {\r |
| 572 | EFI_STATUS Status;\r |
| 573 | EFI_TIME RtcTime;\r |
| 574 | RTC_REGISTER_B RegisterB;\r |
| 575 | UINT8 Century;\r |
| 576 | EFI_TIME_CAPABILITIES Capabilities;\r |
| 577 | \r |
| 578 | if (Enable) {\r |
| 579 | \r |
| 580 | if (Time == NULL) {\r |
| 581 | return EFI_INVALID_PARAMETER;\r |
| 582 | }\r |
| 583 | //\r |
| 584 | // Make sure that the time fields are valid\r |
| 585 | //\r |
| 586 | Status = RtcTimeFieldsValid (Time);\r |
| 587 | if (EFI_ERROR (Status)) {\r |
| 588 | return EFI_INVALID_PARAMETER;\r |
| 589 | }\r |
| 590 | //\r |
| 591 | // Just support set alarm time within 24 hours\r |
| 592 | //\r |
| 593 | PcRtcGetTime (&RtcTime, &Capabilities, Global);\r |
| 594 | if (!IsWithinOneDay (&RtcTime, Time)) {\r |
| 595 | return EFI_UNSUPPORTED;\r |
| 596 | }\r |
| 597 | //\r |
| 598 | // Make a local copy of the time and date\r |
| 599 | //\r |
| 600 | CopyMem (&RtcTime, Time, sizeof (EFI_TIME));\r |
| 601 | \r |
| 602 | }\r |
| 603 | //\r |
| 604 | // Acquire RTC Lock to make access to RTC atomic\r |
| 605 | //\r |
| 606 | //BugBug: the EfiAtRuntime should be encapsulated in EfiAcquireLock or\r |
| 607 | // provide a new instance for EfiAcquireLock, say, RtEfiAcquireLock\r |
| 608 | if (!EfiAtRuntime ()) {\r |
| 609 | EfiAcquireLock (&Global->RtcLock);\r |
| 610 | }\r |
| 611 | //\r |
| 612 | // Wait for up to 0.1 seconds for the RTC to be updated\r |
| 613 | //\r |
| 614 | Status = RtcWaitToUpdate (100000);\r |
| 615 | if (EFI_ERROR (Status)) {\r |
| 616 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 617 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 618 | if (!EfiAtRuntime ()) {\r |
| 619 | EfiReleaseLock (&Global->RtcLock);\r |
| 620 | }\r |
| 621 | return EFI_DEVICE_ERROR;\r |
| 622 | }\r |
| 623 | //\r |
| 624 | // Read Register B, and inhibit updates of the RTC\r |
| 625 | //\r |
| 626 | RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r |
| 627 | \r |
| 628 | RegisterB.Bits.SET = 1;\r |
| 629 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r |
| 630 | \r |
| 631 | if (Enable) {\r |
| 632 | ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r |
| 633 | \r |
| 634 | //\r |
| 635 | // Set RTC alarm time\r |
| 636 | //\r |
| 637 | RtcWrite (RTC_ADDRESS_SECONDS_ALARM, RtcTime.Second);\r |
| 638 | RtcWrite (RTC_ADDRESS_MINUTES_ALARM, RtcTime.Minute);\r |
| 639 | RtcWrite (RTC_ADDRESS_HOURS_ALARM, RtcTime.Hour);\r |
| 640 | \r |
| 641 | RegisterB.Bits.AIE = 1;\r |
| 642 | \r |
| 643 | } else {\r |
| 644 | RegisterB.Bits.AIE = 0;\r |
| 645 | }\r |
| 646 | //\r |
| 647 | // Allow updates of the RTC registers\r |
| 648 | //\r |
| 649 | RegisterB.Bits.SET = 0;\r |
| 650 | RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r |
| 651 | \r |
| 652 | //\r |
| 653 | // Release RTC Lock.\r |
| 654 | //\r |
| 655 | //BugBug: the EfiAtRuntime should be encapsulated in EfiReleaseLock or\r |
| 656 | // provide a new instance for EfiReleaseLock, say, RtEfiReleaseLock\r |
| 657 | if (!EfiAtRuntime ()) {\r |
| 658 | EfiReleaseLock (&Global->RtcLock);\r |
| 659 | }\r |
| 660 | return EFI_SUCCESS;\r |
| 661 | }\r |
| 662 | \r |
| 663 | EFI_STATUS\r |
| 664 | RtcTestCenturyRegister (\r |
| 665 | VOID\r |
| 666 | )\r |
| 667 | /*++\r |
| 668 | \r |
| 669 | Routine Description:\r |
| 670 | \r |
| 671 | Arguments:\r |
| 672 | \r |
| 673 | \r |
| 674 | \r |
| 675 | Returns:\r |
| 676 | --*/\r |
| 677 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r |
| 678 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 679 | {\r |
| 680 | UINT8 Century;\r |
| 681 | UINT8 Temp;\r |
| 682 | \r |
| 683 | Century = RtcRead (RTC_ADDRESS_CENTURY);\r |
| 684 | //\r |
| 685 | // RtcWrite (RTC_ADDRESS_CENTURY, 0x00);\r |
| 686 | //\r |
| 687 | Temp = (UINT8) (RtcRead (RTC_ADDRESS_CENTURY) & 0x7f);\r |
| 688 | RtcWrite (RTC_ADDRESS_CENTURY, Century);\r |
| 689 | if (Temp == 0x19 || Temp == 0x20) {\r |
| 690 | return EFI_SUCCESS;\r |
| 691 | }\r |
| 692 | \r |
| 693 | return EFI_DEVICE_ERROR;\r |
| 694 | }\r |
| 695 | \r |
| 696 | VOID\r |
| 697 | ConvertRtcTimeToEfiTime (\r |
| 698 | IN EFI_TIME *Time,\r |
| 699 | IN RTC_REGISTER_B RegisterB\r |
| 700 | )\r |
| 701 | /*++\r |
| 702 | \r |
| 703 | Routine Description:\r |
| 704 | \r |
| 705 | Arguments:\r |
| 706 | \r |
| 707 | \r |
| 708 | \r |
| 709 | Returns:\r |
| 710 | --*/\r |
| 711 | // GC_TODO: Time - add argument and description to function comment\r |
| 712 | // GC_TODO: RegisterB - add argument and description to function comment\r |
| 713 | {\r |
| 714 | BOOLEAN PM;\r |
| 715 | \r |
| 716 | if ((Time->Hour) & 0x80) {\r |
| 717 | PM = TRUE;\r |
| 718 | } else {\r |
| 719 | PM = FALSE;\r |
| 720 | }\r |
| 721 | \r |
| 722 | Time->Hour = (UINT8) (Time->Hour & 0x7f);\r |
| 723 | \r |
| 724 | if (RegisterB.Bits.DM == 0) {\r |
| 725 | Time->Year = BcdToDecimal8 ((UINT8) Time->Year);\r |
| 726 | Time->Month = BcdToDecimal8 (Time->Month);\r |
| 727 | Time->Day = BcdToDecimal8 (Time->Day);\r |
| 728 | Time->Hour = BcdToDecimal8 (Time->Hour);\r |
| 729 | Time->Minute = BcdToDecimal8 (Time->Minute);\r |
| 730 | Time->Second = BcdToDecimal8 (Time->Second);\r |
| 731 | }\r |
| 732 | //\r |
| 733 | // If time is in 12 hour format, convert it to 24 hour format\r |
| 734 | //\r |
| 735 | if (RegisterB.Bits.MIL == 0) {\r |
| 736 | if (PM && Time->Hour < 12) {\r |
| 737 | Time->Hour = (UINT8) (Time->Hour + 12);\r |
| 738 | }\r |
| 739 | \r |
| 740 | if (!PM && Time->Hour == 12) {\r |
| 741 | Time->Hour = 0;\r |
| 742 | }\r |
| 743 | }\r |
| 744 | \r |
| 745 | Time->Nanosecond = 0;\r |
| 746 | Time->TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r |
| 747 | Time->Daylight = 0;\r |
| 748 | }\r |
| 749 | \r |
| 750 | EFI_STATUS\r |
| 751 | RtcWaitToUpdate (\r |
| 752 | UINTN Timeout\r |
| 753 | )\r |
| 754 | /*++\r |
| 755 | \r |
| 756 | Routine Description:\r |
| 757 | \r |
| 758 | Arguments:\r |
| 759 | \r |
| 760 | \r |
| 761 | Returns:\r |
| 762 | --*/\r |
| 763 | // GC_TODO: Timeout - add argument and description to function comment\r |
| 764 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 765 | // GC_TODO: EFI_DEVICE_ERROR - add return value to function comment\r |
| 766 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r |
| 767 | {\r |
| 768 | RTC_REGISTER_A RegisterA;\r |
| 769 | RTC_REGISTER_D RegisterD;\r |
| 770 | \r |
| 771 | //\r |
| 772 | // See if the RTC is functioning correctly\r |
| 773 | //\r |
| 774 | RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);\r |
| 775 | \r |
| 776 | if (RegisterD.Bits.VRT == 0) {\r |
| 777 | return EFI_DEVICE_ERROR;\r |
| 778 | }\r |
| 779 | //\r |
| 780 | // Wait for up to 0.1 seconds for the RTC to be ready.\r |
| 781 | //\r |
| 782 | Timeout = (Timeout / 10) + 1;\r |
| 783 | RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);\r |
| 784 | while (RegisterA.Bits.UIP == 1 && Timeout > 0) {\r |
| 785 | MicroSecondDelay (10);\r |
| 786 | RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);\r |
| 787 | Timeout--;\r |
| 788 | }\r |
| 789 | \r |
| 790 | RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);\r |
| 791 | if (Timeout == 0 || RegisterD.Bits.VRT == 0) {\r |
| 792 | return EFI_DEVICE_ERROR;\r |
| 793 | }\r |
| 794 | \r |
| 795 | return EFI_SUCCESS;\r |
| 796 | }\r |
| 797 | \r |
| 798 | EFI_STATUS\r |
| 799 | RtcTimeFieldsValid (\r |
| 800 | IN EFI_TIME *Time\r |
| 801 | )\r |
| 802 | /*++\r |
| 803 | \r |
| 804 | Routine Description:\r |
| 805 | \r |
| 806 | Arguments:\r |
| 807 | \r |
| 808 | Returns:\r |
| 809 | --*/\r |
| 810 | // GC_TODO: Time - add argument and description to function comment\r |
| 811 | // GC_TODO: EFI_INVALID_PARAMETER - add return value to function comment\r |
| 812 | // GC_TODO: EFI_SUCCESS - add return value to function comment\r |
| 813 | {\r |
| 814 | if (Time->Year < 1998 ||\r |
| 815 | Time->Year > 2099 ||\r |
| 816 | Time->Month < 1 ||\r |
| 817 | Time->Month > 12 ||\r |
| 818 | (!DayValid (Time)) ||\r |
| 819 | Time->Hour > 23 ||\r |
| 820 | Time->Minute > 59 ||\r |
| 821 | Time->Second > 59 ||\r |
| 822 | Time->Nanosecond > 999999999 ||\r |
| 823 | (!(Time->TimeZone == EFI_UNSPECIFIED_TIMEZONE || (Time->TimeZone >= -1440 && Time->TimeZone <= 1440))) ||\r |
| 824 | (Time->Daylight & (~(EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT)))\r |
| 825 | ) {\r |
| 826 | return EFI_INVALID_PARAMETER;\r |
| 827 | }\r |
| 828 | \r |
| 829 | return EFI_SUCCESS;\r |
| 830 | }\r |
| 831 | \r |
| 832 | BOOLEAN\r |
| 833 | DayValid (\r |
| 834 | IN EFI_TIME *Time\r |
| 835 | )\r |
| 836 | /*++\r |
| 837 | \r |
| 838 | Routine Description:\r |
| 839 | \r |
| 840 | GC_TODO: Add function description\r |
| 841 | \r |
| 842 | Arguments:\r |
| 843 | \r |
| 844 | Time - GC_TODO: add argument description\r |
| 845 | \r |
| 846 | Returns:\r |
| 847 | \r |
| 848 | GC_TODO: add return values\r |
| 849 | \r |
| 850 | --*/\r |
| 851 | {\r |
| 852 | INTN DayOfMonth[12];\r |
| 853 | \r |
| 854 | DayOfMonth[0] = 31;\r |
| 855 | DayOfMonth[1] = 29;\r |
| 856 | DayOfMonth[2] = 31;\r |
| 857 | DayOfMonth[3] = 30;\r |
| 858 | DayOfMonth[4] = 31;\r |
| 859 | DayOfMonth[5] = 30;\r |
| 860 | DayOfMonth[6] = 31;\r |
| 861 | DayOfMonth[7] = 31;\r |
| 862 | DayOfMonth[8] = 30;\r |
| 863 | DayOfMonth[9] = 31;\r |
| 864 | DayOfMonth[10] = 30;\r |
| 865 | DayOfMonth[11] = 31;\r |
| 866 | \r |
| 867 | if (Time->Day < 1 ||\r |
| 868 | Time->Day > DayOfMonth[Time->Month - 1] ||\r |
| 869 | (Time->Month == 2 && (!IsLeapYear (Time) && Time->Day > 28))\r |
| 870 | ) {\r |
| 871 | return FALSE;\r |
| 872 | }\r |
| 873 | \r |
| 874 | return TRUE;\r |
| 875 | }\r |
| 876 | \r |
| 877 | BOOLEAN\r |
| 878 | IsLeapYear (\r |
| 879 | IN EFI_TIME *Time\r |
| 880 | )\r |
| 881 | /*++\r |
| 882 | \r |
| 883 | Routine Description:\r |
| 884 | \r |
| 885 | GC_TODO: Add function description\r |
| 886 | \r |
| 887 | Arguments:\r |
| 888 | \r |
| 889 | Time - GC_TODO: add argument description\r |
| 890 | \r |
| 891 | Returns:\r |
| 892 | \r |
| 893 | GC_TODO: add return values\r |
| 894 | \r |
| 895 | --*/\r |
| 896 | {\r |
| 897 | if (Time->Year % 4 == 0) {\r |
| 898 | if (Time->Year % 100 == 0) {\r |
| 899 | if (Time->Year % 400 == 0) {\r |
| 900 | return TRUE;\r |
| 901 | } else {\r |
| 902 | return FALSE;\r |
| 903 | }\r |
| 904 | } else {\r |
| 905 | return TRUE;\r |
| 906 | }\r |
| 907 | } else {\r |
| 908 | return FALSE;\r |
| 909 | }\r |
| 910 | }\r |
| 911 | \r |
| 912 | VOID\r |
| 913 | ConvertEfiTimeToRtcTime (\r |
| 914 | IN EFI_TIME *Time,\r |
| 915 | IN RTC_REGISTER_B RegisterB,\r |
| 916 | IN UINT8 *Century\r |
| 917 | )\r |
| 918 | /*++\r |
| 919 | \r |
| 920 | Routine Description:\r |
| 921 | \r |
| 922 | Arguments:\r |
| 923 | \r |
| 924 | \r |
| 925 | Returns:\r |
| 926 | --*/\r |
| 927 | // GC_TODO: Time - add argument and description to function comment\r |
| 928 | // GC_TODO: RegisterB - add argument and description to function comment\r |
| 929 | // GC_TODO: Century - add argument and description to function comment\r |
| 930 | {\r |
| 931 | BOOLEAN PM;\r |
| 932 | \r |
| 933 | PM = TRUE;\r |
| 934 | //\r |
| 935 | // Adjust hour field if RTC in in 12 hour mode\r |
| 936 | //\r |
| 937 | if (RegisterB.Bits.MIL == 0) {\r |
| 938 | if (Time->Hour < 12) {\r |
| 939 | PM = FALSE;\r |
| 940 | }\r |
| 941 | \r |
| 942 | if (Time->Hour >= 13) {\r |
| 943 | Time->Hour = (UINT8) (Time->Hour - 12);\r |
| 944 | } else if (Time->Hour == 0) {\r |
| 945 | Time->Hour = 12;\r |
| 946 | }\r |
| 947 | }\r |
| 948 | //\r |
| 949 | // Set the Time/Date/Daylight Savings values.\r |
| 950 | //\r |
| 951 | *Century = DecimalToBcd8 ((UINT8) (Time->Year / 100));\r |
| 952 | \r |
| 953 | Time->Year = (UINT16) (Time->Year % 100);\r |
| 954 | \r |
| 955 | if (RegisterB.Bits.DM == 0) {\r |
| 956 | Time->Year = DecimalToBcd8 ((UINT8) Time->Year);\r |
| 957 | Time->Month = DecimalToBcd8 (Time->Month);\r |
| 958 | Time->Day = DecimalToBcd8 (Time->Day);\r |
| 959 | Time->Hour = DecimalToBcd8 (Time->Hour);\r |
| 960 | Time->Minute = DecimalToBcd8 (Time->Minute);\r |
| 961 | Time->Second = DecimalToBcd8 (Time->Second);\r |
| 962 | }\r |
| 963 | //\r |
| 964 | // If we are in 12 hour mode and PM is set, then set bit 7 of the Hour field.\r |
| 965 | //\r |
| 966 | if (RegisterB.Bits.MIL == 0 && PM) {\r |
| 967 | Time->Hour = (UINT8) (Time->Hour | 0x80);\r |
| 968 | }\r |
| 969 | }\r |
| 970 | \r |
| 971 | STATIC\r |
| 972 | INTN\r |
| 973 | CompareHMS (\r |
| 974 | IN EFI_TIME *From,\r |
| 975 | IN EFI_TIME *To\r |
| 976 | )\r |
| 977 | /*++\r |
| 978 | \r |
| 979 | Routine Description:\r |
| 980 | \r |
| 981 | Compare the Hour, Minute and Second of the 'From' time and the 'To' time.\r |
| 982 | Only compare H/M/S in EFI_TIME and ignore other fields here.\r |
| 983 | \r |
| 984 | Arguments:\r |
| 985 | \r |
| 986 | From - the first time\r |
| 987 | To - the second time\r |
| 988 | \r |
| 989 | Returns:\r |
| 990 | \r |
| 991 | >0 : The H/M/S of the 'From' time is later than those of 'To' time\r |
| 992 | ==0 : The H/M/S of the 'From' time is same as those of 'To' time\r |
| 993 | <0 : The H/M/S of the 'From' time is earlier than those of 'To' time\r |
| 994 | \r |
| 995 | --*/\r |
| 996 | {\r |
| 997 | if ((From->Hour > To->Hour) ||\r |
| 998 | ((From->Hour == To->Hour) && (From->Minute > To->Minute)) ||\r |
| 999 | ((From->Hour == To->Hour) && (From->Minute == To->Minute) && (From->Second > To->Second))) {\r |
| 1000 | return 1;\r |
| 1001 | } else if ((From->Hour == To->Hour) && (From->Minute == To->Minute) && (From->Second == To->Second)) {\r |
| 1002 | return 0;\r |
| 1003 | } else {\r |
| 1004 | return -1;\r |
| 1005 | }\r |
| 1006 | }\r |
| 1007 | \r |
| 1008 | STATIC\r |
| 1009 | BOOLEAN\r |
| 1010 | IsWithinOneDay (\r |
| 1011 | IN EFI_TIME *From,\r |
| 1012 | IN EFI_TIME *To\r |
| 1013 | )\r |
| 1014 | /*++\r |
| 1015 | \r |
| 1016 | Routine Description:\r |
| 1017 | \r |
| 1018 | Judge whether two days are adjacent.\r |
| 1019 | \r |
| 1020 | Arguments:\r |
| 1021 | \r |
| 1022 | From - the first day\r |
| 1023 | To - the second day\r |
| 1024 | \r |
| 1025 | Returns:\r |
| 1026 | \r |
| 1027 | TRUE - The interval of two days are within one day.\r |
| 1028 | FALSE - The interval of two days exceed ony day or parameter error.\r |
| 1029 | \r |
| 1030 | --*/\r |
| 1031 | {\r |
| 1032 | UINT8 DayOfMonth[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};\r |
| 1033 | BOOLEAN Adjacent = FALSE;\r |
| 1034 | \r |
| 1035 | if (From->Year == To->Year) {\r |
| 1036 | if (From->Month == To->Month) {\r |
| 1037 | if ((From->Day + 1) == To->Day) {\r |
| 1038 | if ((CompareHMS(From, To) >= 0)) {\r |
| 1039 | Adjacent = TRUE;\r |
| 1040 | }\r |
| 1041 | } else if (From->Day == To->Day) {\r |
| 1042 | if ((CompareHMS(From, To) <= 0)) {\r |
| 1043 | Adjacent = TRUE;\r |
| 1044 | }\r |
| 1045 | }\r |
| 1046 | } else if (((From->Month + 1) == To->Month) && (To->Day == 1)) {\r |
| 1047 | if ((From->Month == 2) && !IsLeapYear(From)) {\r |
| 1048 | if (From->Day == 28) {\r |
| 1049 | if ((CompareHMS(From, To) >= 0)) {\r |
| 1050 | Adjacent = TRUE;\r |
| 1051 | }\r |
| 1052 | }\r |
| 1053 | } else if (From->Day == DayOfMonth[From->Month - 1]) {\r |
| 1054 | if ((CompareHMS(From, To) >= 0)) {\r |
| 1055 | Adjacent = TRUE;\r |
| 1056 | }\r |
| 1057 | }\r |
| 1058 | }\r |
| 1059 | } else if (((From->Year + 1) == To->Year) &&\r |
| 1060 | (From->Month == 12) &&\r |
| 1061 | (From->Day == 31) &&\r |
| 1062 | (To->Month == 1) &&\r |
| 1063 | (To->Day == 1)) {\r |
| 1064 | if ((CompareHMS(From, To) >= 0)) {\r |
| 1065 | Adjacent = TRUE;\r |
| 1066 | }\r |
| 1067 | }\r |
| 1068 | \r |
| 1069 | return Adjacent;\r |
| 1070 | }\r |
| 1071 | \r |