score: Add RTEMS_FATAL_SOURCE_SMP

Use rtems_fatal() instead of _CPU_Fatal_halt() to shutdown processors in
SMP configurations since this allows intervention of BSP or application
specific fatal extensions.

cpukit/sapi/src/fatalsrctext.c

@@ -36,7 +36,8 @@ static const char *const fatal_source_text[] = {
   "RTEMS_FATAL_SOURCE_BSP",
   "RTEMS_FATAL_SOURCE_ASSERT",
   "RTEMS_FATAL_SOURCE_STACK_CHECKER",
-  "RTEMS_FATAL_SOURCE_EXCEPTION"
+  "RTEMS_FATAL_SOURCE_EXCEPTION",
+  "RTEMS_FATAL_SOURCE_SMP"
 };
 
 const char *rtems_fatal_source_text( rtems_fatal_source source )

cpukit/score/include/rtems/score/interr.h

@@ -103,6 +103,13 @@ typedef enum {
    */
   RTEMS_FATAL_SOURCE_EXCEPTION,
 
+  /**
+   * @brief Fatal source of SMP domain.
+   *
+   * @see SMP_Fatal_code.
+   */
+  RTEMS_FATAL_SOURCE_SMP,
+
   /**
    * @brief The last available fatal source.
    *

cpukit/score/include/rtems/score/smp.h

@@ -43,6 +43,13 @@ extern "C" {
 
 #if !defined( ASM )
 
+/**
+ * @brief SMP fatal codes.
+ */
+typedef enum {
+  SMP_FATAL_SHUTDOWN
+} SMP_Fatal_code;
+
 #if defined( RTEMS_SMP )
   SCORE_EXTERN uint32_t _SMP_Processor_count;
 

cpukit/score/src/smp.c

@@ -23,6 +23,7 @@
 #include <rtems/score/threadimpl.h>
 #include <rtems/score/smp.h>
 #include <rtems/config.h>
+#include <rtems/fatal.h>
 
 #if defined(RTEMS_DEBUG)
   #include <rtems/bspIo.h>
@@ -75,13 +76,9 @@ void rtems_smp_process_interrupt( void )
     #endif
 
     if ( ( message & RTEMS_BSP_SMP_SHUTDOWN ) != 0 ) {
-      _ISR_Disable_without_giant( level );
-
-      _Thread_Dispatch_set_disable_level( 0 );
-
       _Per_CPU_Change_state( self_cpu, PER_CPU_STATE_SHUTDOWN );
 
-      _CPU_Fatal_halt( _Per_CPU_Get_index( self_cpu ) );
+      rtems_fatal( RTEMS_FATAL_SOURCE_SMP, SMP_FATAL_SHUTDOWN );
       /* does not continue past here */
     }
   }

testsuites/sptests/spinternalerror02/init.c

@@ -49,7 +49,7 @@ static void test_fatal_source_text(void)
     puts( text );
   } while ( text != text_last );
 
-  rtems_test_assert( source - 3 == RTEMS_FATAL_SOURCE_EXCEPTION );
+  rtems_test_assert( source - 3 == RTEMS_FATAL_SOURCE_SMP );
 }
 
 static void test_status_text(void)

testsuites/sptests/spinternalerror02/spinternalerror02.scn

@@ -36,6 +36,7 @@ RTEMS_FATAL_SOURCE_BSP
 RTEMS_FATAL_SOURCE_ASSERT
 RTEMS_FATAL_SOURCE_STACK_CHECKER
 RTEMS_FATAL_SOURCE_EXCEPTION
+RTEMS_FATAL_SOURCE_SMP
 ?
 ?
 RTEMS_SUCCESSFUL