1/*	$NetBSD: cpuconf.h,v 1.5 2016/10/08 20:30:54 joerg Exp $	*/
  2
  3/*
  4 * Copyright (c) 1992, 1993
  5 *	The Regents of the University of California.  All rights reserved.
  6 *
  7 * This software was developed by the Computer Systems Engineering group
  8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  9 * contributed to Berkeley.
 10 *
 11 * All advertising materials mentioning features or use of this software
 12 * must display the following acknowledgement:
 13 *	This product includes software developed by the University of
 14 *	California, Lawrence Berkeley Laboratory.
 15 *
 16 * Redistribution and use in source and binary forms, with or without
 17 * modification, are permitted provided that the following conditions
 18 * are met:
 19 * 1. Redistributions of source code must retain the above copyright
 20 *    notice, this list of conditions and the following disclaimer.
 21 * 2. Redistributions in binary form must reproduce the above copyright
 22 *    notice, this list of conditions and the following disclaimer in the
 23 *    documentation and/or other materials provided with the distribution.
 24 * 3. Neither the name of the University nor the names of its contributors
 25 *    may be used to endorse or promote products derived from this software
 26 *    without specific prior written permission.
 27 *
 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 38 * SUCH DAMAGE.
 39 *
 40 *	@(#)param.h	8.1 (Berkeley) 6/11/93
 41 */
 42/*
 43 * Sun4M support by Aaron Brown, Harvard University.
 44 * Changes Copyright (c) 1995 The President and Fellows of Harvard College.
 45 * All rights reserved.
 46 */
 47
 48#ifndef _SPARC_CPUCONF_H_
 49#define	_SPARC_CPUCONF_H_
 50
 51/*
 52 * Values for the cputyp variable.
 53 */
 54#define	CPU_SUN4	0
 55#define	CPU_SUN4C	1
 56#define	CPU_SUN4M	2
 57#define	CPU_SUN4U	3
 58#define	CPU_SUN4D	4
 59
 60#if defined(_KERNEL) || defined(_STANDALONE)
 61
 62#if defined(_KERNEL_OPT)
 63#include "opt_sparc_arch.h"
 64#endif /* _KERNEL_OPT */
 65
 66#ifndef _LOCORE
 67extern int cputyp;
 68#endif
 69
 70/* 
 71 * Shorthand CPU-type macros.  Let the compiler optimize away code
 72 * conditional on constants.
 73 */
 74
 75/*
 76 * Step 1: Count the number of CPU types configured into the kernel.
 77 */
 78#if defined(_KERNEL_OPT)
 79#ifdef SUN4
 80#define	_CPU_NTYPES_SUN4 1
 81#else
 82#define	_CPU_NTYPES_SUN4 0
 83#endif
 84#ifdef SUN4C
 85#define	_CPU_NTYPES_SUN4C 1
 86#else
 87#define	_CPU_NTYPES_SUN4C 0
 88#endif
 89#ifdef SUN4M
 90#define	_CPU_NTYPES_SUN4M 1
 91#else
 92#define	_CPU_NTYPES_SUN4M 0
 93#endif
 94#ifdef SUN4D
 95#define	_CPU_NTYPES_SUN4D 1
 96#else
 97#define	_CPU_NTYPES_SUN4D 0
 98#endif
 99#define	CPU_NTYPES	(_CPU_NTYPES_SUN4 + _CPU_NTYPES_SUN4C + \
100			 _CPU_NTYPES_SUN4M + _CPU_NTYPES_SUN4D)
101#else
102#define	CPU_NTYPES	0
103#endif
104
105/*
106 * Step 2: Define the CPU type predicates.  Rules:
107 *
108 *	* If multiple CPU types are configured in, and the CPU type
109 *	  is not one of them, then the test is always false.
110 *
111 *	* If exactly one CPU type is configured in, and it's this
112 *	  one, then the test is always true.
113 *
114 *	* Otherwise, we have to reference the cputyp variable.
115 */
116#if CPU_NTYPES != 0 && !defined(SUN4)
117#	define CPU_ISSUN4	(0)
118#elif CPU_NTYPES == 1 && defined(SUN4)
119#	define CPU_ISSUN4	(1)
120#else
121#	define CPU_ISSUN4	(cputyp == CPU_SUN4)
122#endif 
123
124#if CPU_NTYPES != 0 && !defined(SUN4C)
125#	define CPU_ISSUN4C	(0)
126#elif CPU_NTYPES == 1 && defined(SUN4C)
127#	define CPU_ISSUN4C	(1)
128#else
129#	define CPU_ISSUN4C	(cputyp == CPU_SUN4C)
130#endif
131
132#if CPU_NTYPES != 0 && !defined(SUN4M)
133#	define CPU_ISSUN4M	(0)
134#elif CPU_NTYPES == 1 && defined(SUN4M) 
135#	define CPU_ISSUN4M	(1)
136#else                                   
137#	define CPU_ISSUN4M	(cputyp == CPU_SUN4M)
138#endif
139
140#if CPU_NTYPES != 0 && !defined(SUN4D) 
141#	define CPU_ISSUN4D	(0)
142#elif CPU_NTYPES == 1 && defined(SUN4D)
143#	define CPU_ISSUN4D	(1)
144#else
145#	define CPU_ISSUN4D	(cputyp == CPU_SUN4D)
146#endif
147
148#define	CPU_ISSUN4U		(0)
149
150/*
151 * Step 3: Define some short-hand for the different MMUs.
152 */
153#define	CPU_HAS_SRMMU		(CPU_ISSUN4M || CPU_ISSUN4D)
154#define CPU_HAS_SUNMMU		(CPU_ISSUN4 || CPU_ISSUN4C)
155
156#endif /* _KERNEL || _STANDALONE */
157
158#endif /* _SPARC_CPUCONF_H_ */