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/*
* This routine returns control to 135Bug.
*
* 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.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <rtems.h>
#include <bsp.h>
#include <clockdrv.h>
#include <zilog/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 */
}
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