2011-03-16 Jennifer Averett <jennifer.averett@OARcorp.com>

	PR 1729/cpukit
	* configure.ac, sapi/include/confdefs.h, sapi/src/exinit.c,
	score/Makefile.am, score/preinstall.am,
	score/cpu/i386/rtems/score/cpu.h, score/cpu/sparc/cpu_asm.S,
	score/cpu/sparc/rtems/score/cpu.h,
	score/include/rtems/score/basedefs.h,
	score/include/rtems/score/context.h,
	score/include/rtems/score/percpu.h, score/src/percpu.c,
	score/src/thread.c, score/src/threadcreateidle.c: Add next step in
	SMP support. This adds an allocated array of the Per_CPU structures
	to support multiple cpus vs a single instance of the structure which
	is still used if SMP support is disabled. Configuration support is
	also added to explicitly enable or disable SMP. But SMP can only be
	enabled for the CPUs which will support it initially -- SPARC and
	i386. With the stub BSP support, a BSP can be run as a single core
	SMP system from an RTEMS data structure standpoint.
	* aclocal/check-smp.m4, aclocal/enable-smp.m4,
	score/include/rtems/bspsmp.h, score/include/rtems/score/smplock.h,
	score/src/smp.c, score/src/smplock.c: New files.

1 files changed, 30 insertions, 14 deletions

diff --git a/cpukit/score/src/threadcreateidle.c b/cpukit/score/src/threadcreateidle.c
index bea6a23b89..6a4bf65e9c 100644
--- a/cpukit/score/src/threadcreateidle.c
+++ b/cpukit/score/src/threadcreateidle.c
@@ -2,7 +2,7 @@
  *  Thread Handler
  *
  *
- *  COPYRIGHT (c) 1989-2008.
+ *  COPYRIGHT (c) 1989-2011.
  *  On-Line Applications Research Corporation (OAR).
  *
  *  The license and distribution terms for this file may be
@@ -30,24 +30,24 @@
 #include <rtems/score/userext.h>
 #include <rtems/score/wkspace.h>
 #include <rtems/config.h>
+#include <rtems/bspsmp.h>
 
-/*PAGE
- *
- *  _Thread_Create_idle
- */
-
-void _Thread_Create_idle( void )
+static inline void _Thread_Create_idle_helper(
+  uint32_t name_u32,
+  int      cpu
+) 
 {
-  Objects_Name name;
+  Objects_Name    name;
+  Thread_Control *idle;
 
-  name.name_u32 = _Objects_Build_name( 'I', 'D', 'L', 'E' );
+  name.name_u32 = name_u32;
 
   /*
    *  The entire workspace is zeroed during its initialization.  Thus, all
    *  fields not explicitly assigned were explicitly zeroed by
    *  _Workspace_Initialization.
    */
-  _Thread_Idle = _Thread_Internal_allocate();
+  idle = _Thread_Internal_allocate();
 
   /*
    *  This is only called during initialization and we better be sure
@@ -58,7 +58,7 @@ void _Thread_Create_idle( void )
 
   _Thread_Initialize(
     &_Thread_Internal_information,
-    _Thread_Idle,
+    idle,
     NULL,        /* allocate the stack */
     _Stack_Ensure_minimum( Configuration.idle_task_stack_size ),
     CPU_IDLE_TASK_IS_FP,
@@ -76,15 +76,31 @@ void _Thread_Create_idle( void )
    *  WARNING!!! This is necessary to "kick" start the system and
    *             MUST be done before _Thread_Start is invoked.
    */
-  _Thread_Heir      =
-  _Thread_Executing = _Thread_Idle;
+  _Per_CPU_Information[ cpu ].idle      =
+  _Per_CPU_Information[ cpu ].heir      =
+  _Per_CPU_Information[ cpu ].executing = idle;
 
   _Thread_Start(
-    _Thread_Idle,
+    idle,
     THREAD_START_NUMERIC,
     Configuration.idle_task,
     NULL,
     0
   );
+}
+
+void _Thread_Create_idle( void )
+{
+  #if defined(RTEMS_SMP)
+    int cpu;
 
+    for ( cpu=0 ; cpu < _SMP_Processor_count ; cpu++ ) {
+      _Thread_Create_idle_helper(
+        _Objects_Build_name( 'I', 'D', 'L', 'E' ),
+        cpu
+      );
+    }
+  #else
+    _Thread_Create_idle_helper(_Objects_Build_name( 'I', 'D', 'L', 'E' ), 0);
+  #endif
 }