/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/* SRT1.c - Stand-alone Run-time startup code, part 1 */
#include <sys/types.h>
#include <sun68k/mon.h>
#include "libsa.h"
#include "dvma.h"
int _is2 = 0;
int _is3x = 0;
struct sunromvec *_romvec = 0;
void *chain_to_func = 0;
/*
* These are the function pointers for sun2 vs sun3 vs sun3x stuff.
*/
char * (*dev_mapin_p)(int, u_long, int);
char * (*dvma_alloc_p)(int);
void (*dvma_free_p)(char *, int);
char * (*dvma_mapin_p)(char *, int);
void (*dvma_mapout_p)(char *, int);
/*
* This is called by SRT0.S
* to do final prep for main
*/
void
_start(void)
{
void **vbr;
int x;
/*
* Determine sun2 vs sun3 vs sun3x by looking where the
* vector base register points. The PROM always
* points that somewhere into [MONSTART..MONEND]
* which is a different range on each.
*/
vbr = getvbr();
x = (int)vbr & 0xFFF00000;
if (x == SUN3X_MONSTART)
_is3x = 1;
else if (x == 0)
_is2 = 1;
/* Find the PROM vector. */
if (_is3x)
x = SUN3X_PROM_BASE;
else if (_is2)
x = SUN2_PROM_BASE;
else
x = SUN3_PROM_BASE;
_romvec = ((struct sunromvec *) x);
/* Setup trap 14 for use as a breakpoint. */
vbr[32+14] = _romvec->abortEntry;
/* Initialize sun3 vs sun3x function pointers. */
if (_is3x)
sun3x_init();
else if (_is2)
sun2_init();
else
sun3_init();
