Subversion Repositories openrisc_2011-10-31

/*

 *  This routine returns control to 147Bug.

 *

 *  COPYRIGHT (c) 1989-1999.

 *  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.OARcorp.com/rtems/license.html.

 *

 *  MVME147 port for TNI - Telecom Bretagne

 *  by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)

 *  May 1996

 *

 *  $Id: bspclean.c,v 1.2 2001-09-27 12:00:16 chris Exp $

 */

#include <rtems.h>

#include <bsp.h>

#include <clockdrv.h>

void bsp_return_to_monitor_trap()

{

  extern void start( void  );

  register volatile void *start_addr;

  m68k_set_vbr( 0 );                /* restore 147Bug vectors */

  asm volatile( "trap   #15"  );    /* trap to 147Bug */

  asm volatile( ".short 0x63" );    /* return to 147Bug (.RETURN) */

                                    /* restart program */

  start_addr = start;

  asm volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) );

}

void bsp_cleanup( void )

{

   pcc->timer1_int_control = 0; /* Disable Timer 1 */

   pcc->timer2_int_control = 0; /* Disable Timer 2 */

   M68Kvec[ 45 ] = bsp_return_to_monitor_trap;   /* install handler */

   asm volatile( "trap #13" );  /* insures SUPV mode */

}