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Initialize alarm register in PcRtc module entrypoint to make UEFI SCT GetWakeupTime pass. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Eric Jin <eric.jin@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16425 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Elvin Li 2014-11-25 03:38:20 +00:00 committed by li-elvin
parent 0db3fade2c
commit d431bf6e56
1 changed files with 90 additions and 3 deletions
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93
PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
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@ -104,6 +104,8 @@ PcRtcInit (
EFI_TIME Time;
UINTN DataSize;
UINT32 TimerVar;
BOOLEAN Enabled;
BOOLEAN Pending;
//
// Acquire RTC Lock to make access to RTC atomic
@ -226,11 +228,96 @@ PcRtcInit (
// Reset time value according to new RTC configuration
//
Status = PcRtcSetTime (&Time, Global);
if(!EFI_ERROR (Status)) {
return EFI_SUCCESS;
} else {
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Reset wakeup time value to valid state when wakeup alarm is disabled and wakeup time is invalid.
// Global variable has already had valid SavedTimeZone and Daylight,
// so we can use them to get and set wakeup time.
//
Status = PcRtcGetWakeupTime (&Enabled, &Pending, &Time, Global);
if ((Enabled) || (!EFI_ERROR (Status))) {
return EFI_SUCCESS;
}
//
// When wakeup time is disabled and invalid, reset wakeup time register to valid state
// but keep wakeup alarm disabled.
//
Time.Second = RTC_INIT_SECOND;
Time.Minute = RTC_INIT_MINUTE;
Time.Hour = RTC_INIT_HOUR;
Time.Day = RTC_INIT_DAY;
Time.Month = RTC_INIT_MONTH;
Time.Year = RTC_INIT_YEAR;
Time.Nanosecond = 0;
Time.TimeZone = Global->SavedTimeZone;
Time.Daylight = Global->Daylight;;
//
// Acquire RTC Lock to make access to RTC atomic
//
if (!EfiAtRuntime ()) {
EfiAcquireLock (&Global->RtcLock);
}
//
// Wait for up to 0.1 seconds for the RTC to be updated
//
Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));
if (EFI_ERROR (Status)) {
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
}
return EFI_DEVICE_ERROR;
}
ConvertEfiTimeToRtcTime (&Time, RegisterB, &Century);
//
// Set the Y/M/D info to variable as it has no corresponding hw registers.
//
Status = EfiSetVariable (
L"RTCALARM",
&gEfiCallerIdGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
sizeof (Time),
&Time
);
if (EFI_ERROR (Status)) {
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
}
return EFI_DEVICE_ERROR;
}
//
// Inhibit updates of the RTC
//
RegisterB.Bits.Set = 1;
RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
//
// Set RTC alarm time registers
//
RtcWrite (RTC_ADDRESS_SECONDS_ALARM, Time.Second);
RtcWrite (RTC_ADDRESS_MINUTES_ALARM, Time.Minute);
RtcWrite (RTC_ADDRESS_HOURS_ALARM, Time.Hour);
//
// Allow updates of the RTC registers
//
RegisterB.Bits.Set = 0;
RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);
//
// Release RTC Lock.
//
if (!EfiAtRuntime ()) {
EfiReleaseLock (&Global->RtcLock);
}
return EFI_SUCCESS;
}
/**