1/*	$NetBSD$	*/
2
3/*-
4 * Copyright (c) 1996 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Gordon W. Ross.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD$");
34
35#include "opt_fpu_emulate.h"
36
37/*
38 * Floating Point Unit (MC68881/882/040) initialization.
39 */
40
41#include <sys/param.h>
42
43#include <machine/cpu.h>
44#include <machine/frame.h>
45
46/*
47 * FPU type; emulator uses FPU_NONE
48 */
49
50extern label_t *nofault;
51
52static const char *fpu_descr[] = {
53#ifdef	FPU_EMULATE
54	[FPU_NONE] = "emulator",
55#else
56	[FPU_NONE] = "no math support",
57#endif
58	[FPU_68881] = "mc68881",
59	[FPU_68882] = "mc68882",
60	[FPU_68040] = "mc68040",
61	[FPU_68060] = "mc68060",
62	[FPU_UNKNOWN] = "unknown"
63};
64
65void
66initfpu(void)
67{
68	const char *descr;
69
70	fputype = fpu_probe();
71
72	/* Generate a reference FPU idle frame. */
73	if (fputype != FPU_NONE)
74		m68k_make_fpu_idle_frame();
75
76	if ((0 <= fputype) && (fputype <= 3))
77		descr = fpu_descr[fputype];
78	else
79		descr = "unknown type";
80
81	printf("fpu: %s\n", descr);
82}
83