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diff --git a/include/rtems/score/watchdog.h b/include/rtems/score/watchdog.h
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+/**
+ *  @file  rtems/score/watchdog.h
+ *
+ *  @brief Constants and Structures Associated with Watchdog Timers
+ *
+ *  This include file contains all the constants and structures associated
+ *  with watchdog timers.   This Handler provides mechanisms which can be
+ *  used to initialize and manipulate watchdog timers.
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-2009.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_SCORE_WATCHDOG_H
+#define _RTEMS_SCORE_WATCHDOG_H
+
+#include <rtems/score/object.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ *  @defgroup ScoreWatchdog Watchdog Handler
+ *
+ *  @ingroup Score
+ *
+ *  This handler encapsulates functionality related to the scheduling of
+ *  watchdog functions to be called at specific times in the future.
+ *
+ *  @note This handler does not have anything to do with hardware watchdog
+ *        timers.
+ */
+/**@{*/
+
+/**
+ *  @brief Type is used to specify the length of intervals.
+ *
+ *  This type is used to specify the length of intervals.
+ */
+typedef uint32_t   Watchdog_Interval;
+
+/**
+ *  @brief Return type from a Watchdog Service Routine.
+ *
+ *  This type defines the return type from a Watchdog Service Routine.
+ */
+typedef void Watchdog_Service_routine;
+
+/**
+ *  @brief Pointer to a watchdog service routine.
+ *
+ *  This type define a pointer to a watchdog service routine.
+ */
+typedef Watchdog_Service_routine ( *Watchdog_Service_routine_entry )(
+                 Objects_Id,
+                 void *
+             );
+
+/**
+ *  @brief The constant for indefinite wait.
+ *
+ *  This is the constant for indefinite wait.  It is actually an
+ *  illegal interval.
+ */
+#define WATCHDOG_NO_TIMEOUT  0
+
+/**
+ *  @brief Set of the states which a watchdog timer may be at any given time.
+ *
+ *  This enumerated type is the set of the states in which a
+ *  watchdog timer may be at any given time.
+ */
+
+typedef enum {
+  /** This is the state when the watchdog is off all chains */
+  WATCHDOG_INACTIVE,
+  /** This is the state when the watchdog is off all chains, but we are
+   *  currently searching for the insertion point.
+   */
+  WATCHDOG_BEING_INSERTED,
+  /** This is the state when the watchdog is on a chain, and allowed to fire. */
+  WATCHDOG_ACTIVE
+} Watchdog_States;
+
+/**
+ *  @brief The control block used to manage each watchdog timer.
+ *
+ *  The following record defines the control block used
+ *  to manage each watchdog timer.
+ */
+typedef struct {
+  /** This field is a Chain Node structure and allows this to be placed on
+   *  chains for set management.
+   */
+  Chain_Node                      Node;
+  /** This field is the state of the watchdog. */
+  Watchdog_States                 state;
+  /** This field is the initially requested interval. */
+  Watchdog_Interval               initial;
+  /** This field is the remaining portion of the interval. */
+  Watchdog_Interval               delta_interval;
+  /** This field is the number of system clock ticks when this was scheduled. */
+  Watchdog_Interval               start_time;
+  /** This field is the number of system clock ticks when this was suspended. */
+  Watchdog_Interval               stop_time;
+  /** This field is the function to invoke. */
+  Watchdog_Service_routine_entry  routine;
+  /** This field is the Id to pass as an argument to the routine. */
+  Objects_Id                      id;
+  /** This field is an untyped pointer to user data that is passed to the
+   *  watchdog handler routine.
+   */
+  void                           *user_data;
+}   Watchdog_Control;
+
+/**
+ * @brief The watchdog ticks counter.
+ *
+ * With a 1ms watchdog tick, this counter overflows after 50 days since boot.
+ */
+extern volatile Watchdog_Interval _Watchdog_Ticks_since_boot;
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */