4.104.114.84.95
Last change
on this file since c9647b3 was
81d96577,
checked in by Joel Sherrill <joel.sherrill@…>, on 08/04/97 at 21:55:30
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moved header files into the motorola and zilog subdirectories
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-
Property mode set to
100644
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File size:
1.3 KB
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1 | /* |
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2 | * This routine returns control to 135Bug. |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1997. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * Copyright assigned to U.S. Government, 1994. |
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7 | * |
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8 | * The license and distribution terms for this file may in |
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9 | * the file LICENSE in this distribution or at |
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10 | * http://www.OARcorp.com/rtems/license.html. |
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11 | * |
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12 | * $Id$ |
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13 | */ |
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14 | |
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15 | #include <rtems.h> |
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16 | #include <bsp.h> |
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17 | #include <clockdrv.h> |
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18 | #include <zilog/z8036.h> |
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19 | |
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20 | void bsp_return_to_monitor_trap() |
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21 | { |
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22 | extern void start( void ); |
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23 | |
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24 | register volatile void *start_addr; |
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25 | |
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26 | m68k_set_vbr( 0 ); /* restore 135Bug vectors */ |
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27 | asm volatile( "trap #15" ); /* trap to 135Bug */ |
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28 | asm volatile( ".short 0x63" ); /* return to 135Bug (.RETURN) */ |
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29 | /* restart program */ |
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30 | start_addr = start; |
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31 | |
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32 | asm volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) ); |
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33 | } |
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34 | |
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35 | #define TIMER 0xfffb0000 |
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36 | |
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37 | void bsp_cleanup( void ) |
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38 | { |
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39 | Z8x36_WRITE( TIMER, MASTER_INTR, 0x62 ); /* redo timer */ |
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40 | Z8x36_WRITE( TIMER, CT1_MODE_SPEC, 0x00 ); |
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41 | Z8x36_WRITE( TIMER, MASTER_CFG, 0xf4 ); |
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42 | Z8x36_WRITE( TIMER, CT1_CMD_STATUS, 0x00 ); |
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43 | |
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44 | M68Kvec[ 45 ] = bsp_return_to_monitor_trap; /* install handler */ |
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45 | asm volatile( "trap #13" ); /* insures SUPV mode */ |
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46 | } |
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