EFI_TIME_CAPABILITIES Struct Reference

Data Fields
UINT32	Resolution
UINT32	Accuracy
BOOLEAN	SetsToZero

Detailed Description

This provides the capabilities of the real time clock device as exposed through the EFI interfaces.

Field Documentation

UINT32 EFI_TIME_CAPABILITIES::Accuracy

Provides the timekeeping accuracy of the real-time clock in an error rate of 1E-6 parts per million. For a clock with an accuracy of 50 parts per million, the value in this field would be 50,000,000.

UINT32 EFI_TIME_CAPABILITIES::Resolution

Provides the reporting resolution of the real-time clock device in counts per second. For a normal PC-AT CMOS RTC device, this value would be 1 Hz, or 1, to indicate that the device only reports the time to the resolution of 1 second.

BOOLEAN EFI_TIME_CAPABILITIES::SetsToZero

A TRUE indicates that a time set operation clears the device's time below the Resolution reporting level. A FALSE indicates that the state below the Resolution level of the device is not cleared when the time is set. Normal PC-AT CMOS RTC devices set this value to FALSE.