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      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
     67 extern 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_ */
    159