2005-10-05 Jiri Gaisler <jiri@gaisler.com>

            Edvin Catovic <edvin@gaisler.com>
            Konrad Eisele <konrad@gaisler.com>

	PR 827/bsps
	* ChangeLog, cpu.c, cpu_asm.S, rtems/score/cpu.h: Portion of large
	update of SPARC BSPs. Includes addition of sis, leon2 and leon3 BSPs,
	deletion of leon BSP, addition of SMC91111 NIC driver and much more.

4 files changed, 46 insertions, 11 deletions

diff --git a/cpukit/score/cpu/sparc/ChangeLog b/cpukit/score/cpu/sparc/ChangeLog
index 6cffd53fa2..09f3449aca 100644
--- a/cpukit/score/cpu/sparc/ChangeLog
+++ b/cpukit/score/cpu/sparc/ChangeLog
@@ -1,3 +1,20 @@
+2005-10-05  Jiri Gaisler <jiri@gaisler.com>
+            Edvin Catovic <edvin@gaisler.com>
+            Konrad Eisele <konrad@gaisler.com>
+
+	PR 827/bsps
+	* ChangeLog, cpu.c, cpu_asm.S, rtems/score/cpu.h: Portion of large
+	update of SPARC BSPs. Includes addition of sis, leon2 and leon3 BSPs,
+	deletion of leon BSP, addition of SMC91111 NIC driver and much more.
+
+2004-06-16	Edvin Catovic <edvin@gaisler.com>
+
+	* cpu_asm.S: Added FP context initialization routine 
+	_CPU_Context_initialize_fp
+	* cpu.c: Changed FP context initialization. 
+	* rtems/score/sparc.h: Defined SPARC_HAS_FPU to be 1 (Non-FP BSPs 
+	erc32nfp and leon1 are removed)	
+
 2004-02-26	Andreas Karlsson <andreas.karlsson@space.se>
 
 	604/bsps
diff --git a/cpukit/score/cpu/sparc/cpu.c b/cpukit/score/cpu/sparc/cpu.c
index d0bc7ba8d5..e3b859f408 100644
--- a/cpukit/score/cpu/sparc/cpu.c
+++ b/cpukit/score/cpu/sparc/cpu.c
@@ -53,18 +53,15 @@ void _CPU_Initialize(
   void            (*thread_dispatch)      /* ignored on this CPU */
 )
 {
-#if (SPARC_HAS_FPU == 1)
   void                  *pointer;
 
   /*
-   *  This seems to be the most appropriate way to obtain an initial
-   *  FP context on the SPARC.  The NULL fp context is copied it to
+   *  FP context is initialized.  The NULL fp context is copied it to
    *  the task's FP context during Context_Initialize.
    */
 
   pointer = &_CPU_Null_fp_context;
-  _CPU_Context_save_fp( &pointer );
-#endif
+  _CPU_Context_initialize_fp(pointer);
 
   /*
    *  Grab our own copy of the user's CPU table.
@@ -316,7 +313,6 @@ void _CPU_Context_Initialize(
     tmp_psr |= (new_level << 8) & SPARC_PSR_PIL_MASK;
     tmp_psr &= ~SPARC_PSR_EF_MASK;      /* disabled by default */
     
-#if (SPARC_HAS_FPU == 1)
     /*
      *  If this bit is not set, then a task gets a fault when it accesses
      *  a floating point register.  This is a nice way to detect floating
@@ -325,6 +321,6 @@ void _CPU_Context_Initialize(
 
     if ( is_fp )
       tmp_psr |= SPARC_PSR_EF_MASK;
-#endif
+
     the_context->psr = tmp_psr;
 }
diff --git a/cpukit/score/cpu/sparc/cpu_asm.S b/cpukit/score/cpu/sparc/cpu_asm.S
index 357e3dcbd4..201759df38 100644
--- a/cpukit/score/cpu/sparc/cpu_asm.S
+++ b/cpukit/score/cpu/sparc/cpu_asm.S
@@ -23,7 +23,31 @@
 
 #include <asm.h>
 
-#if (SPARC_HAS_FPU == 1)
+/*
+ *  void _CPU_Context_initialize_fp(
+ *    void *fp_context_ptr
+ *  )
+ *
+ *  This routine is responsible for initializing the FP context
+ *  at *fp_context_ptr. All registers and FSR in the FP context
+ *  are initailized to 0.  
+ *  
+ */
+
+        .align 4
+        PUBLIC(_CPU_Context_initialize_fp)
+SYM(_CPU_Context_initialize_fp):
+	set	0, %l1
+fpcontextinit:	
+	std	%g0, [%o0]		! write register fields of the FP context
+	add	%l1, 1, %l1
+	cmp	%l1, 16
+	bne	fpcontextinit							
+	add	%o0, 8, %o0
+	retl		
+	st	%g0, [%o0]		! write fsr field of the FP context
+		
+	
 
 /*
  *  void _CPU_Context_save_fp(
@@ -123,8 +147,6 @@ SYM(_CPU_Context_restore_fp):
         ret
         restore
 
-#endif /* SPARC_HAS_FPU */
-
 /*
  *  void _CPU_Context_switch(
  *    Context_Control  *run,
diff --git a/cpukit/score/cpu/sparc/rtems/score/cpu.h b/cpukit/score/cpu/sparc/rtems/score/cpu.h
index 1efae86666..ff11cfbf85 100644
--- a/cpukit/score/cpu/sparc/rtems/score/cpu.h
+++ b/cpukit/score/cpu/sparc/rtems/score/cpu.h
@@ -154,7 +154,7 @@ extern "C" {
  *  not provide one.
  */
 
-#define CPU_PROVIDES_IDLE_THREAD_BODY    FALSE
+#define CPU_PROVIDES_IDLE_THREAD_BODY    TRUE
 
 /*
  *  Does the stack grow up (toward higher addresses) or down