Initial revision

1 files changed, 46 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/m68k/mvme136/startup/bspclean.c b/c/src/lib/libbsp/m68k/mvme136/startup/bspclean.c
new file mode 100644
index 0000000000..4366603a55
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/mvme136/startup/bspclean.c
@@ -0,0 +1,46 @@
+/*
+ *  This routine returns control to 135Bug.
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *  All rights assigned to U.S. Government, 1994.
+ *
+ *  This material may be reproduced by or for the U.S. Government pursuant
+ *  to the copyright license under the clause at DFARS 252.227-7013.  This
+ *  notice must appear in all copies of this file and its derivatives.
+ *
+ *  $Id$
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+#include <clockdrv.h>
+#include <z8036.h>
+
+void bsp_return_to_monitor_trap()
+{
+  extern void start( void  );
+
+  register volatile void *start_addr;
+
+  m68k_set_vbr( 0 );                /* restore 135Bug vectors */
+  asm volatile( "trap   #15"  );    /* trap to 135Bug */
+  asm volatile( ".short 0x63" );    /* return to 135Bug (.RETURN) */
+                                    /* restart program */
+  start_addr = start;
+
+  asm volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) );
+}
+
+#define TIMER   0xfffb0000
+
+void bsp_cleanup( void )
+{
+   Z8x36_WRITE( TIMER, MASTER_INTR,    0x62 );   /* redo timer */
+   Z8x36_WRITE( TIMER, CT1_MODE_SPEC,  0x00 );
+   Z8x36_WRITE( TIMER, MASTER_CFG,     0xf4 );
+   Z8x36_WRITE( TIMER, CT1_CMD_STATUS, 0x00 );
+
+   M68Kvec[ 45 ] = bsp_return_to_monitor_trap;   /* install handler */
+   asm volatile( "trap #13" );  /* insures SUPV mode */
+}