4.104.114.84.95
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1 | /* |
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2 | * This routine returns control to 147Bug. |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1998. |
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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 be |
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9 | * found in 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 | * MVME147 port for TNI - Telecom Bretagne |
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13 | * by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr) |
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14 | * May 1996 |
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15 | * |
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16 | * $Id$ |
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17 | */ |
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18 | |
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19 | #include <rtems.h> |
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20 | #include <bsp.h> |
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21 | #include <clockdrv.h> |
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22 | |
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23 | void bsp_return_to_monitor_trap() |
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24 | { |
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25 | extern void start( void ); |
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26 | |
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27 | register volatile void *start_addr; |
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28 | |
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29 | m68k_set_vbr( 0 ); /* restore 147Bug vectors */ |
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30 | asm volatile( "trap #15" ); /* trap to 147Bug */ |
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31 | asm volatile( ".short 0x63" ); /* return to 147Bug (.RETURN) */ |
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32 | /* restart program */ |
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33 | start_addr = start; |
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34 | |
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35 | asm volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) ); |
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36 | } |
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37 | |
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38 | void bsp_cleanup( void ) |
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39 | { |
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40 | pcc->timer1_int_control = 0; /* Disable Timer 1 */ |
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41 | pcc->timer2_int_control = 0; /* Disable Timer 2 */ |
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42 | |
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43 | M68Kvec[ 45 ] = bsp_return_to_monitor_trap; /* install handler */ |
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44 | asm volatile( "trap #13" ); /* insures SUPV mode */ |
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45 | } |
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