sysdeps/standalone/m68k/m68020/mvme136/brdinit.c

   1 /* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
   4      On-Line Applications Research Corporation.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <standalone.h>
  22 #include "m68020.h"
  23
  24 /*  _Board_Initialize()
  25
  26 This routine initializes the Motorola MVME135/MVME136.  */
  27
  28 void
  29 _Board_Initialize ()
  30 {
  31   mc68020_isr *monitors_vector_table;
  32   int          index;
  33
  34   monitors_vector_table = (mc68020_isr *)0;   /* 135Bug Vectors are at 0 */
  35   set_vbr( monitors_vector_table );
  36
  37   for ( index=2 ; index<=255 ; index++ )
  38     M68Kvec[ index ] = monitors_vector_table[ 32 ];
  39
  40   M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
  41   M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
  42   M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
  43   M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
  44
  45   set_vbr( &M68Kvec );
  46
  47   (*(unsigned char *)0xfffb0067) = 0x7f; /* make VME access round-robin */
  48
  49   enable_caching ();
  50
  51 }