4.104.114.84.95
Rev | Line | |
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[ac7d5ef0] | 1 | /* |
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| 2 | * This routine returns control to 135Bug. |
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| 3 | * |
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[08311cc3] | 4 | * COPYRIGHT (c) 1989-1999. |
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[ac7d5ef0] | 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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[98e4ebf5] | 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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[03f2154e] | 9 | * http://www.OARcorp.com/rtems/license.html. |
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[ac7d5ef0] | 10 | * |
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| 11 | * $Id$ |
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| 12 | */ |
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| 13 | |
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| 14 | #include <rtems.h> |
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| 15 | #include <bsp.h> |
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| 16 | #include <clockdrv.h> |
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[81d96577] | 17 | #include <zilog/z8036.h> |
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[ac7d5ef0] | 18 | |
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| 19 | void bsp_return_to_monitor_trap() |
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| 20 | { |
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| 21 | extern void start( void ); |
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| 22 | |
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| 23 | register volatile void *start_addr; |
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| 24 | |
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| 25 | m68k_set_vbr( 0 ); /* restore 135Bug vectors */ |
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| 26 | asm volatile( "trap #15" ); /* trap to 135Bug */ |
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| 27 | asm volatile( ".short 0x63" ); /* return to 135Bug (.RETURN) */ |
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| 28 | /* restart program */ |
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| 29 | start_addr = start; |
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| 30 | |
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| 31 | asm volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) ); |
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| 32 | } |
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| 33 | |
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| 34 | #define TIMER 0xfffb0000 |
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| 35 | |
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| 36 | void bsp_cleanup( void ) |
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| 37 | { |
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| 38 | Z8x36_WRITE( TIMER, MASTER_INTR, 0x62 ); /* redo timer */ |
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| 39 | Z8x36_WRITE( TIMER, CT1_MODE_SPEC, 0x00 ); |
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| 40 | Z8x36_WRITE( TIMER, MASTER_CFG, 0xf4 ); |
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| 41 | Z8x36_WRITE( TIMER, CT1_CMD_STATUS, 0x00 ); |
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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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