1 files changed, 51 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Universal/Metronome/Metronome.h b/roms/edk2/MdeModulePkg/Universal/Metronome/Metronome.h
new file mode 100644
index 000000000..7017e34ea
--- /dev/null
+++ b/roms/edk2/MdeModulePkg/Universal/Metronome/Metronome.h
@@ -0,0 +1,51 @@
+/** @file
+  Include file of Metronome driver.
+
+Copyright (c) 2008 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _METRONOME_H_
+#define _METRONOME_H_
+
+#include <PiDxe.h>
+#include <Protocol/Metronome.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/TimerLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+
+/**
+  Waits for the specified number of ticks.
+
+  This function implements EFI_METRONOME_ARCH_PROTOCOL.WaitForTick().
+  The WaitForTick() function waits for the number of ticks specified by
+  TickNumber from a known time source in the platform.  If TickNumber of
+  ticks are detected, then EFI_SUCCESS is returned.  The actual time passed
+  between entry of this function and the first tick is between 0 and
+  TickPeriod 100 nS units.  If you want to guarantee that at least TickPeriod
+  time has elapsed, wait for two ticks.  This function waits for a hardware
+  event to determine when a tick occurs.  It is possible for interrupt
+  processing, or exception processing to interrupt the execution of the
+  WaitForTick() function.  Depending on the hardware source for the ticks, it
+  is possible for a tick to be missed.  This function cannot guarantee that
+  ticks will not be missed.  If a timeout occurs waiting for the specified
+  number of ticks, then EFI_TIMEOUT is returned.
+
+  @param  This             The EFI_METRONOME_ARCH_PROTOCOL instance.
+  @param  TickNumber       Number of ticks to wait.
+
+  @retval EFI_SUCCESS      The wait for the number of ticks specified by TickNumber
+                           succeeded.
+  @retval EFI_TIMEOUT      A timeout occurred waiting for the specified number of ticks.
+
+**/
+EFI_STATUS
+EFIAPI
+WaitForTick (
+  IN EFI_METRONOME_ARCH_PROTOCOL  *This,
+  IN UINT32                       TickNumber
+  );
+
+#endif