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diff --git a/cpukit/include/rtems/score/smpimpl.h b/cpukit/include/rtems/score/smpimpl.h
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+/**
+ * @file
+ *
+ * @ingroup ScoreSMPImpl
+ *
+ * @brief SuperCore SMP Implementation
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-2011.
+ *  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_SMPIMPL_H
+#define _RTEMS_SCORE_SMPIMPL_H
+
+#include <rtems/score/smp.h>
+#include <rtems/score/percpu.h>
+#include <rtems/score/processormask.h>
+#include <rtems/fatal.h>
+#include <rtems/rtems/cache.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ScoreSMP SMP Support
+ *
+ * @ingroup Score
+ *
+ * This defines the interface of the SuperCore SMP support.
+ *
+ * @{
+ */
+
+/**
+ * @brief SMP message to request a processor shutdown.
+ *
+ * @see _SMP_Send_message().
+ */
+#define SMP_MESSAGE_SHUTDOWN 0x1UL
+
+/**
+ * @brief SMP message to request a test handler invocation.
+ *
+ * @see _SMP_Send_message().
+ */
+#define SMP_MESSAGE_TEST 0x2UL
+
+/**
+ * @brief SMP message to request a multicast action.
+ *
+ * @see _SMP_Send_message().
+ */
+#define SMP_MESSAGE_MULTICAST_ACTION 0x4UL
+
+/**
+ * @brief SMP message to request a clock tick.
+ *
+ * This message is provided for systems without a proper interrupt affinity
+ * support and may be used by the clock driver.
+ *
+ * @see _SMP_Send_message().
+ */
+#define SMP_MESSAGE_CLOCK_TICK 0x8UL
+
+/**
+ * @brief SMP fatal codes.
+ */
+typedef enum {
+  SMP_FATAL_BOOT_PROCESSOR_NOT_ASSIGNED_TO_SCHEDULER,
+  SMP_FATAL_MANDATORY_PROCESSOR_NOT_PRESENT,
+  SMP_FATAL_MULTITASKING_START_ON_INVALID_PROCESSOR,
+  SMP_FATAL_MULTITASKING_START_ON_UNASSIGNED_PROCESSOR,
+  SMP_FATAL_SHUTDOWN,
+  SMP_FATAL_SHUTDOWN_RESPONSE,
+  SMP_FATAL_START_OF_MANDATORY_PROCESSOR_FAILED
+} SMP_Fatal_code;
+
+static inline void _SMP_Fatal( SMP_Fatal_code code )
+{
+  _Terminate( RTEMS_FATAL_SOURCE_SMP, code );
+}
+
+/**
+ *  @brief Initialize SMP Handler
+ *
+ *  This method initialize the SMP Handler.
+ */
+#if defined( RTEMS_SMP )
+  void _SMP_Handler_initialize( void );
+#else
+  #define _SMP_Handler_initialize() \
+    do { } while ( 0 )
+#endif
+
+#if defined( RTEMS_SMP )
+
+/**
+ * @brief Set of online processors.
+ *
+ * A processor is online if was started during system initialization.  In this
+ * case its corresponding bit in the mask is set.
+ *
+ * @see _SMP_Handler_initialize().
+ */
+extern Processor_mask _SMP_Online_processors;
+
+/**
+ * @brief Performs high-level initialization of a secondary processor and runs
+ * the application threads.
+ *
+ * The low-level initialization code must call this function to hand over the
+ * control of this processor to RTEMS.  Interrupts must be disabled.  It must
+ * be possible to send inter-processor interrupts to this processor.  Since
+ * interrupts are disabled the inter-processor interrupt delivery is postponed
+ * until interrupts are enabled the first time.  Interrupts are enabled during
+ * the execution begin of threads in case they have interrupt level zero (this
+ * is the default).
+ *
+ * The pre-requisites for the call to this function are
+ * - disabled interrupts,
+ * - delivery of inter-processor interrupts is possible,
+ * - a valid stack pointer and enough stack space,
+ * - a valid code memory, and
+ * - a valid BSS section.
+ *
+ * This function must not be called by the main processor.  The main processor
+ * uses _Thread_Start_multitasking() instead.
+ *
+ * This function does not return to the caller.
+ */
+void _SMP_Start_multitasking_on_secondary_processor( void )
+  RTEMS_NO_RETURN;
+
+typedef void ( *SMP_Test_message_handler )( Per_CPU_Control *cpu_self );
+
+extern SMP_Test_message_handler _SMP_Test_message_handler;
+
+/**
+ * @brief Sets the handler for test messages.
+ *
+ * This handler can be used to test the inter-processor interrupt
+ * implementation.
+ */
+static inline void _SMP_Set_test_message_handler(
+  SMP_Test_message_handler handler
+)
+{
+  _SMP_Test_message_handler = handler;
+}
+
+/**
+ * @brief Processes all pending multicast actions.
+ */
+void _SMP_Multicast_actions_process( void );
+
+/**
+ * @brief Interrupt handler for inter-processor interrupts.
+ *
+ * @return The received message.
+ */
+static inline long unsigned _SMP_Inter_processor_interrupt_handler( void )
+{
+  Per_CPU_Control *cpu_self;
+  unsigned long    message;
+
+  cpu_self = _Per_CPU_Get();
+
+  /*
+   * In the common case the inter-processor interrupt is issued to carry out a
+   * thread dispatch.
+   */
+  cpu_self->dispatch_necessary = true;
+
+  message = _Atomic_Exchange_ulong(
+    &cpu_self->message,
+    0,
+    ATOMIC_ORDER_ACQUIRE
+  );
+
+  if ( message != 0 ) {
+    if ( ( message & SMP_MESSAGE_SHUTDOWN ) != 0 ) {
+      _SMP_Fatal( SMP_FATAL_SHUTDOWN_RESPONSE );
+      /* does not continue past here */
+    }
+
+    if ( ( message & SMP_MESSAGE_TEST ) != 0 ) {
+      ( *_SMP_Test_message_handler )( cpu_self );
+    }
+
+    if ( ( message & SMP_MESSAGE_MULTICAST_ACTION ) != 0 ) {
+      _SMP_Multicast_actions_process();
+    }
+  }
+
+  return message;
+}
+
+/**
+ *  @brief Returns true, if the processor with the specified index should be
+ *  started.
+ *
+ *  @param[in] cpu_index The processor index.
+ *
+ *  @retval true The processor should be started.
+ *  @retval false Otherwise.
+ */
+bool _SMP_Should_start_processor( uint32_t cpu_index );
+
+/**
+ *  @brief Sends an SMP message to a processor.
+ *
+ *  The target processor may be the sending processor.
+ *
+ *  @param[in] cpu_index The target processor of the message.
+ *  @param[in] message The message.
+ */
+void _SMP_Send_message( uint32_t cpu_index, unsigned long message );
+
+/**
+ *  @brief Sends an SMP message to all other online processors.
+ *
+ *  @param[in] message The message.
+ */
+void _SMP_Send_message_broadcast(
+  unsigned long message
+);
+
+/**
+ *  @brief Sends an SMP message to a set of processors.
+ *
+ *  The sending processor may be part of the set.
+ *
+ *  @param[in] targets The set of processors to send the message.
+ *  @param[in] message The message.
+ */
+void _SMP_Send_message_multicast(
+  const Processor_mask *targets,
+  unsigned long         message
+);
+
+typedef void ( *SMP_Action_handler )( void *arg );
+
+/**
+ *  @brief Initiates an SMP multicast action to a set of processors.
+ *
+ *  The current processor may be part of the set.
+ *
+ *  @param[in] setsize The size of the set of target processors of the message.
+ *  @param[in] cpus The set of target processors of the message.
+ *  @param[in] handler The multicast action handler.
+ *  @param[in] arg The multicast action argument.
+ */
+void _SMP_Multicast_action(
+  const size_t setsize,
+  const cpu_set_t *cpus,
+  SMP_Action_handler handler,
+  void *arg
+);
+
+/**
+ * @brief Executes a handler with argument on the specified processor on behalf
+ * of the boot processor.
+ *
+ * The calling processor must be the boot processor.  In case the specified
+ * processor is not online or not in the
+ * PER_CPU_STATE_READY_TO_START_MULTITASKING state, then no action is
+ * performed.
+ *
+ * @param cpu The processor to execute the action.
+ * @param handler The handler of the action.
+ * @param arg The argument of the action.
+ *
+ * @retval true The handler executed on the specified processor.
+ * @retval false Otherwise.
+ *
+ * @see _SMP_Before_multitasking_action_broadcast().
+ */
+bool _SMP_Before_multitasking_action(
+  Per_CPU_Control    *cpu,
+  SMP_Action_handler  handler,
+  void               *arg
+);
+
+/**
+ * @brief Executes a handler with argument on all online processors except the
+ * boot processor on behalf of the boot processor.
+ *
+ * The calling processor must be the boot processor.
+ *
+ * @param handler The handler of the action.
+ * @param arg The argument of the action.
+ *
+ * @retval true The handler executed on all online processors except the boot
+ * processor.
+ * @retval false Otherwise.
+ *
+ * @see _SMP_Before_multitasking_action().
+ */
+bool _SMP_Before_multitasking_action_broadcast(
+  SMP_Action_handler  handler,
+  void               *arg
+);
+
+#endif /* defined( RTEMS_SMP ) */
+
+/**
+ * @brief Requests a multitasking start on all configured and available
+ * processors.
+ */
+#if defined( RTEMS_SMP )
+  void _SMP_Request_start_multitasking( void );
+#else
+  #define _SMP_Request_start_multitasking() \
+    do { } while ( 0 )
+#endif
+
+/**
+ * @brief Requests a shutdown of all processors.
+ *
+ * This function is a part of the system termination procedure.
+ *
+ * @see _Terminate().
+ */
+#if defined( RTEMS_SMP )
+  void _SMP_Request_shutdown( void );
+#else
+  #define _SMP_Request_shutdown() \
+    do { } while ( 0 )
+#endif
+
+RTEMS_INLINE_ROUTINE const Processor_mask *_SMP_Get_online_processors( void )
+{
+#if defined(RTEMS_SMP)
+  return &_SMP_Online_processors;
+#else
+  return &_Processor_mask_The_one_and_only;
+#endif
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */