/** @file\r
RTC Architectural Protocol GUID as defined in DxeCis 0.96.\r
\r
-Copyright (c) 2006 - 2007, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
EFI_TIME Time;\r
UINTN DataSize;\r
UINT32 TimerVar;\r
+ BOOLEAN Enabled;\r
+ BOOLEAN Pending;\r
\r
//\r
// Acquire RTC Lock to make access to RTC atomic\r
//\r
Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r
if (EFI_ERROR (Status)) {\r
+ //\r
+ // Set the variable with default value if the RTC is functioning incorrectly.\r
+ //\r
+ Global->SavedTimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
+ Global->Daylight = 0;\r
if (!EfiAtRuntime ()) {\r
EfiReleaseLock (&Global->RtcLock);\r
}\r
Status = RtcTimeFieldsValid (&Time);\r
}\r
if (EFI_ERROR (Status)) {\r
+ //\r
+ // Report Status Code to indicate that the RTC has bad date and time\r
+ //\r
+ REPORT_STATUS_CODE (\r
+ EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
+ (EFI_SOFTWARE_DXE_RT_DRIVER | EFI_SW_EC_BAD_DATE_TIME)\r
+ );\r
Time.Second = RTC_INIT_SECOND;\r
Time.Minute = RTC_INIT_MINUTE;\r
Time.Hour = RTC_INIT_HOUR;\r
Time.Month = RTC_INIT_MONTH;\r
Time.Year = RTC_INIT_YEAR;\r
Time.Nanosecond = 0;\r
+ Time.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
+ Time.Daylight = 0;\r
}\r
\r
//\r
// Reset time value according to new RTC configuration\r
//\r
Status = PcRtcSetTime (&Time, Global);\r
- if(!EFI_ERROR (Status)) {\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ \r
+ //\r
+ // Reset wakeup time value to valid state when wakeup alarm is disabled and wakeup time is invalid.\r
+ // Global variable has already had valid SavedTimeZone and Daylight,\r
+ // so we can use them to get and set wakeup time.\r
+ //\r
+ Status = PcRtcGetWakeupTime (&Enabled, &Pending, &Time, Global);\r
+ if ((Enabled) || (!EFI_ERROR (Status))) {\r
return EFI_SUCCESS;\r
- } else {\r
+ }\r
+ \r
+ //\r
+ // When wakeup time is disabled and invalid, reset wakeup time register to valid state \r
+ // but keep wakeup alarm disabled.\r
+ //\r
+ Time.Second = RTC_INIT_SECOND;\r
+ Time.Minute = RTC_INIT_MINUTE;\r
+ Time.Hour = RTC_INIT_HOUR;\r
+ Time.Day = RTC_INIT_DAY;\r
+ Time.Month = RTC_INIT_MONTH;\r
+ Time.Year = RTC_INIT_YEAR;\r
+ Time.Nanosecond = 0;\r
+ Time.TimeZone = Global->SavedTimeZone;\r
+ Time.Daylight = Global->Daylight;;\r
+\r
+ //\r
+ // Acquire RTC Lock to make access to RTC atomic\r
+ //\r
+ if (!EfiAtRuntime ()) {\r
+ EfiAcquireLock (&Global->RtcLock);\r
+ }\r
+ //\r
+ // Wait for up to 0.1 seconds for the RTC to be updated\r
+ //\r
+ Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r
+ if (EFI_ERROR (Status)) {\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (&Global->RtcLock);\r
+ }\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ \r
+ ConvertEfiTimeToRtcTime (&Time, RegisterB, &Century);\r
+\r
+ //\r
+ // Set the Y/M/D info to variable as it has no corresponding hw registers.\r
+ //\r
+ Status = EfiSetVariable (\r
+ L"RTCALARM",\r
+ &gEfiCallerIdGuid,\r
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
+ sizeof (Time),\r
+ &Time\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (&Global->RtcLock);\r
+ }\r
return EFI_DEVICE_ERROR;\r
}\r
+ \r
+ //\r
+ // Inhibit updates of the RTC\r
+ //\r
+ RegisterB.Bits.Set = 1;\r
+ RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
+ \r
+ //\r
+ // Set RTC alarm time registers\r
+ //\r
+ RtcWrite (RTC_ADDRESS_SECONDS_ALARM, Time.Second);\r
+ RtcWrite (RTC_ADDRESS_MINUTES_ALARM, Time.Minute);\r
+ RtcWrite (RTC_ADDRESS_HOURS_ALARM, Time.Hour);\r
+\r
+ //\r
+ // Allow updates of the RTC registers\r
+ //\r
+ RegisterB.Bits.Set = 0;\r
+ RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
+ \r
+ //\r
+ // Release RTC Lock.\r
+ //\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (&Global->RtcLock);\r
+ }\r
+ return EFI_SUCCESS;\r
}\r
\r
/**\r
}\r
return Status;\r
}\r
+ \r
+ //\r
+ // Write timezone and daylight to RTC variable\r
+ //\r
+ TimerVar = Time->Daylight;\r
+ TimerVar = (UINT32) ((TimerVar << 16) | (UINT16)(Time->TimeZone));\r
+ Status = EfiSetVariable (\r
+ L"RTC",\r
+ &gEfiCallerIdGuid,\r
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
+ sizeof (TimerVar),\r
+ &TimerVar\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (&Global->RtcLock);\r
+ }\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+\r
//\r
// Read Register B, and inhibit updates of the RTC\r
//\r
RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r
- RegisterB.Bits.SET = 1;\r
+ RegisterB.Bits.Set = 1;\r
RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
\r
ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r
//\r
// Allow updates of the RTC registers\r
//\r
- RegisterB.Bits.SET = 0;\r
+ RegisterB.Bits.Set = 0;\r
RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
\r
//\r
Global->SavedTimeZone = Time->TimeZone;\r
Global->Daylight = Time->Daylight;\r
\r
- TimerVar = Time->Daylight;\r
- TimerVar = (UINT32) ((TimerVar << 16) | Time->TimeZone);\r
- Status = EfiSetVariable (\r
- L"RTC",\r
- &gEfiCallerIdGuid,\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
- sizeof (TimerVar),\r
- &TimerVar\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
return EFI_SUCCESS;\r
}\r
\r
RTC_REGISTER_B RegisterB;\r
RTC_REGISTER_C RegisterC;\r
UINT8 Century;\r
+ EFI_TIME RtcTime;\r
+ UINTN DataSize;\r
\r
//\r
// Check parameters for null pointers\r
//\r
// Get the Time/Date/Daylight Savings values.\r
//\r
- *Enabled = RegisterB.Bits.AIE;\r
- if (*Enabled) {\r
- Time->Second = RtcRead (RTC_ADDRESS_SECONDS_ALARM);\r
- Time->Minute = RtcRead (RTC_ADDRESS_MINUTES_ALARM);\r
- Time->Hour = RtcRead (RTC_ADDRESS_HOURS_ALARM);\r
- Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r
- Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r
- Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r
- } else {\r
- Time->Second = 0;\r
- Time->Minute = 0;\r
- Time->Hour = 0;\r
- Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r
- Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r
- Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r
- }\r
+ *Enabled = RegisterB.Bits.Aie;\r
+ *Pending = RegisterC.Bits.Af;\r
+\r
+ Time->Second = RtcRead (RTC_ADDRESS_SECONDS_ALARM);\r
+ Time->Minute = RtcRead (RTC_ADDRESS_MINUTES_ALARM);\r
+ Time->Hour = RtcRead (RTC_ADDRESS_HOURS_ALARM);\r
+ Time->Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r
+ Time->Month = RtcRead (RTC_ADDRESS_MONTH);\r
+ Time->Year = RtcRead (RTC_ADDRESS_YEAR);\r
+ Time->TimeZone = Global->SavedTimeZone;\r
+ Time->Daylight = Global->Daylight;\r
\r
Century = RtcRead (RTC_ADDRESS_CENTURY);\r
- \r
+\r
//\r
- // Release RTC Lock.\r
+ // Get the alarm info from variable\r
//\r
- if (!EfiAtRuntime ()) {\r
- EfiReleaseLock (&Global->RtcLock);\r
+ DataSize = sizeof (EFI_TIME);\r
+ Status = EfiGetVariable (\r
+ L"RTCALARM",\r
+ &gEfiCallerIdGuid,\r
+ NULL,\r
+ &DataSize,\r
+ &RtcTime\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ //\r
+ // The alarm variable exists. In this case, we read variable to get info.\r
+ //\r
+ Time->Day = RtcTime.Day;\r
+ Time->Month = RtcTime.Month;\r
+ Time->Year = RtcTime.Year;\r
}\r
\r
//\r
- // Get the variable that contains the TimeZone and Daylight fields\r
+ // Release RTC Lock.\r
//\r
- Time->TimeZone = Global->SavedTimeZone;\r
- Time->Daylight = Global->Daylight;\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (&Global->RtcLock);\r
+ }\r
\r
//\r
// Make sure all field values are in correct range\r
return EFI_DEVICE_ERROR;\r
}\r
\r
- *Pending = RegisterC.Bits.AF;\r
-\r
return EFI_SUCCESS;\r
}\r
\r
UINT8 Century;\r
EFI_TIME_CAPABILITIES Capabilities;\r
\r
+ ZeroMem (&RtcTime, sizeof (RtcTime));\r
+\r
if (Enable) {\r
\r
if (Time == NULL) {\r
return EFI_DEVICE_ERROR;\r
}\r
//\r
- // Read Register B, and inhibit updates of the RTC\r
+ // Read Register B\r
//\r
- RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r
-\r
- RegisterB.Bits.SET = 1;\r
- RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
+ RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r
\r
if (Enable) {\r
ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r
+ } else {\r
+ //\r
+ // if the alarm is disable, record the current setting.\r
+ //\r
+ RtcTime.Second = RtcRead (RTC_ADDRESS_SECONDS_ALARM);\r
+ RtcTime.Minute = RtcRead (RTC_ADDRESS_MINUTES_ALARM);\r
+ RtcTime.Hour = RtcRead (RTC_ADDRESS_HOURS_ALARM);\r
+ RtcTime.Day = RtcRead (RTC_ADDRESS_DAY_OF_THE_MONTH);\r
+ RtcTime.Month = RtcRead (RTC_ADDRESS_MONTH);\r
+ RtcTime.Year = RtcRead (RTC_ADDRESS_YEAR);\r
+ RtcTime.TimeZone = Global->SavedTimeZone;\r
+ RtcTime.Daylight = Global->Daylight;\r
+ }\r
+\r
+ //\r
+ // Set the Y/M/D info to variable as it has no corresponding hw registers.\r
+ //\r
+ Status = EfiSetVariable (\r
+ L"RTCALARM",\r
+ &gEfiCallerIdGuid,\r
+ EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
+ sizeof (RtcTime),\r
+ &RtcTime\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ if (!EfiAtRuntime ()) {\r
+ EfiReleaseLock (&Global->RtcLock);\r
+ }\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ \r
+ //\r
+ // Inhibit updates of the RTC\r
+ //\r
+ RegisterB.Bits.Set = 1;\r
+ RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
\r
+ if (Enable) {\r
//\r
// Set RTC alarm time\r
//\r
RtcWrite (RTC_ADDRESS_MINUTES_ALARM, RtcTime.Minute);\r
RtcWrite (RTC_ADDRESS_HOURS_ALARM, RtcTime.Hour);\r
\r
- RegisterB.Bits.AIE = 1;\r
+ RegisterB.Bits.Aie = 1;\r
\r
} else {\r
- RegisterB.Bits.AIE = 0;\r
+ RegisterB.Bits.Aie = 0;\r
}\r
//\r
// Allow updates of the RTC registers\r
//\r
- RegisterB.Bits.SET = 0;\r
+ RegisterB.Bits.Set = 0;\r
RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
\r
//\r
\r
Time->Hour = (UINT8) (Time->Hour & 0x7f);\r
\r
- if (RegisterB.Bits.DM == 0) {\r
+ if (RegisterB.Bits.Dm == 0) {\r
Time->Year = CheckAndConvertBcd8ToDecimal8 ((UINT8) Time->Year);\r
Time->Month = CheckAndConvertBcd8ToDecimal8 (Time->Month);\r
Time->Day = CheckAndConvertBcd8ToDecimal8 (Time->Day);\r
//\r
// If time is in 12 hour format, convert it to 24 hour format\r
//\r
- if (RegisterB.Bits.MIL == 0) {\r
+ if (RegisterB.Bits.Mil == 0) {\r
if (IsPM && Time->Hour < 12) {\r
Time->Hour = (UINT8) (Time->Hour + 12);\r
}\r
//\r
RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);\r
\r
- if (RegisterD.Bits.VRT == 0) {\r
+ if (RegisterD.Bits.Vrt == 0) {\r
return EFI_DEVICE_ERROR;\r
}\r
//\r
//\r
Timeout = (Timeout / 10) + 1;\r
RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);\r
- while (RegisterA.Bits.UIP == 1 && Timeout > 0) {\r
+ while (RegisterA.Bits.Uip == 1 && Timeout > 0) {\r
MicroSecondDelay (10);\r
RegisterA.Data = RtcRead (RTC_ADDRESS_REGISTER_A);\r
Timeout--;\r
}\r
\r
RegisterD.Data = RtcRead (RTC_ADDRESS_REGISTER_D);\r
- if (Timeout == 0 || RegisterD.Bits.VRT == 0) {\r
+ if (Timeout == 0 || RegisterD.Bits.Vrt == 0) {\r
return EFI_DEVICE_ERROR;\r
}\r
\r
IN EFI_TIME *Time\r
)\r
{\r
- if (Time->Year < 1998 ||\r
- Time->Year > 2099 ||\r
+ if (Time->Year < PcdGet16 (PcdMinimalValidYear) ||\r
+ Time->Year > PcdGet16 (PcdMaximalValidYear) ||\r
Time->Month < 1 ||\r
Time->Month > 12 ||\r
(!DayValid (Time)) ||\r
IN EFI_TIME *Time\r
)\r
{\r
-\r
- INTN DayOfMonth[12] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };\r
+ INTN DayOfMonth[12];\r
+\r
+ DayOfMonth[0] = 31;\r
+ DayOfMonth[1] = 29;\r
+ DayOfMonth[2] = 31;\r
+ DayOfMonth[3] = 30;\r
+ DayOfMonth[4] = 31;\r
+ DayOfMonth[5] = 30;\r
+ DayOfMonth[6] = 31;\r
+ DayOfMonth[7] = 31;\r
+ DayOfMonth[8] = 30;\r
+ DayOfMonth[9] = 31;\r
+ DayOfMonth[10] = 30;\r
+ DayOfMonth[11] = 31;\r
\r
//\r
// The validity of Time->Month field should be checked before\r
//\r
// Adjust hour field if RTC is in 12 hour mode\r
//\r
- if (RegisterB.Bits.MIL == 0) {\r
+ if (RegisterB.Bits.Mil == 0) {\r
if (Time->Hour < 12) {\r
IsPM = FALSE;\r
}\r
\r
Time->Year = (UINT16) (Time->Year % 100);\r
\r
- if (RegisterB.Bits.DM == 0) {\r
+ if (RegisterB.Bits.Dm == 0) {\r
Time->Year = DecimalToBcd8 ((UINT8) Time->Year);\r
Time->Month = DecimalToBcd8 (Time->Month);\r
Time->Day = DecimalToBcd8 (Time->Day);\r
//\r
// If we are in 12 hour mode and PM is set, then set bit 7 of the Hour field.\r
//\r
- if (RegisterB.Bits.MIL == 0 && IsPM) {\r
+ if (RegisterB.Bits.Mil == 0 && IsPM) {\r
Time->Hour = (UINT8) (Time->Hour | 0x80);\r
}\r
}\r
IN EFI_TIME *To\r
)\r
{\r
- UINT8 DayOfMonth[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};\r
+ UINT8 DayOfMonth[12];\r
BOOLEAN Adjacent;\r
\r
+ DayOfMonth[0] = 31;\r
+ DayOfMonth[1] = 29;\r
+ DayOfMonth[2] = 31;\r
+ DayOfMonth[3] = 30;\r
+ DayOfMonth[4] = 31;\r
+ DayOfMonth[5] = 30;\r
+ DayOfMonth[6] = 31;\r
+ DayOfMonth[7] = 31;\r
+ DayOfMonth[8] = 30;\r
+ DayOfMonth[9] = 31;\r
+ DayOfMonth[10] = 30;\r
+ DayOfMonth[11] = 31;\r
+\r
Adjacent = FALSE;\r
\r
//\r
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