RealTimeClockLib.c

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#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/RealTimeClockLib.h>
 
EFI_STATUS
EFIAPI
LibGetTime (
  OUT EFI_TIME                *Time,
  OUT  EFI_TIME_CAPABILITIES  *Capabilities
  )
{
  //
  // Fill in Time and Capabilities via data from you RTC
  //
  return EFI_DEVICE_ERROR;
}
 
EFI_STATUS
EFIAPI
LibSetTime (
  IN EFI_TIME  *Time
  )
{
  //
  // Use Time, to set the time in your RTC hardware
  //
  return EFI_DEVICE_ERROR;
}
 
EFI_STATUS
EFIAPI
LibGetWakeupTime (
  OUT BOOLEAN   *Enabled,
  OUT BOOLEAN   *Pending,
  OUT EFI_TIME  *Time
  )
{
  // Not a required feature
  return EFI_UNSUPPORTED;
}
 
EFI_STATUS
EFIAPI
LibSetWakeupTime (
  IN BOOLEAN    Enabled,
  OUT EFI_TIME  *Time
  )
{
  // Not a required feature
  return EFI_UNSUPPORTED;
}
 
EFI_STATUS
EFIAPI
LibRtcInitialize (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  //
  // Do some initialization if required to turn on the RTC
  //
  return EFI_SUCCESS;
}