mvme147/start/bspstart.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  *  This routine does the bulk of the system initialization.
0005  */
0006
0007 /*
0008  *  COPYRIGHT (c) 1989-1999.
0009  *  On-Line Applications Research Corporation (OAR).
0010  *
0011  * Redistribution and use in source and binary forms, with or without
0012  * modification, are permitted provided that the following conditions
0013  * are met:
0014  * 1. Redistributions of source code must retain the above copyright
0015  *    notice, this list of conditions and the following disclaimer.
0016  * 2. Redistributions in binary form must reproduce the above copyright
0017  *    notice, this list of conditions and the following disclaimer in the
0018  *    documentation and/or other materials provided with the distribution.
0019  *
0020  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0021  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0022  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0023  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0024  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0025  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0026  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0027  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0028  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0029  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0030  * POSSIBILITY OF SUCH DAMAGE.
0031  *
0032  *  MVME147 port for TNI - Telecom Bretagne
0033  *  by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
0034  *  May 1996
0035  */
0036
0037 #include <bsp.h>
0038 #include <bsp/bootcard.h>
0039
0040 void bsp_start( void )
0041 {
0042   rtems_isr_entry       *monitors_vector_table;
0043   int                   index;
0044
0045   monitors_vector_table = (rtems_isr_entry *)0;   /* 135Bug Vectors are at 0 */
0046   m68k_set_vbr( monitors_vector_table );
0047
0048   for ( index=2 ; index<=255 ; index++ )
0049     M68Kvec[ index ] = monitors_vector_table[ 32 ];
0050
0051   M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
0052   M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
0053   M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
0054   M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
0055
0056   m68k_set_vbr( &M68Kvec );
0057
0058   pcc->int_base_vector = PCC_BASE_VECTOR; /* Set the PCC int vectors base */
0059
0060   (*(uint8_t*)0xfffe2001) = 0x08;         /* make VME access round-robin */
0061
0062   rtems_cache_enable_instruction();
0063   rtems_cache_enable_data();
0064 }