sys/arch/sparc/include/cpuconf.h

   1 /*      $NetBSD: cpuconf.h,v 1.1.2.4 2005/01/17 19:30:19 skrll 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 #define CPU_NTYPES      (defined(SUN4) + defined(SUN4C) + \
  80                          defined(SUN4M) + defined(SUN4D))
  81 #else
  82 #define CPU_NTYPES      0
  83 #endif
  84
  85 /*
  86  * Step 2: Define the CPU type predicates.  Rules:
  87  *
  88  *      * If multiple CPU types are configured in, and the CPU type
  89  *        is not one of them, then the test is always false.
  90  *
  91  *      * If exactly one CPU type is configured in, and it's this
  92  *        one, then the test is always true.
  93  *
  94  *      * Otherwise, we have to reference the cputyp variable.
  95  */
  96 #if CPU_NTYPES != 0 && !defined(SUN4)
  97 #       define CPU_ISSUN4       (0)
  98 #elif CPU_NTYPES == 1 && defined(SUN4)
  99 #       define CPU_ISSUN4       (1)
 100 #else
 101 #       define CPU_ISSUN4       (cputyp == CPU_SUN4)
 102 #endif
 103
 104 #if CPU_NTYPES != 0 && !defined(SUN4C)
 105 #       define CPU_ISSUN4C      (0)
 106 #elif CPU_NTYPES == 1 && defined(SUN4C)
 107 #       define CPU_ISSUN4C      (1)
 108 #else
 109 #       define CPU_ISSUN4C      (cputyp == CPU_SUN4C)
 110 #endif
 111
 112 #if CPU_NTYPES != 0 && !defined(SUN4M)
 113 #       define CPU_ISSUN4M      (0)
 114 #elif CPU_NTYPES == 1 && defined(SUN4M)
 115 #       define CPU_ISSUN4M      (1)
 116 #else
 117 #       define CPU_ISSUN4M      (cputyp == CPU_SUN4M)
 118 #endif
 119
 120 #if CPU_NTYPES != 0 && !defined(SUN4D)
 121 #       define CPU_ISSUN4D      (0)
 122 #elif CPU_NTYPES == 1 && defined(SUN4D)
 123 #       define CPU_ISSUN4D      (1)
 124 #else
 125 #       define CPU_ISSUN4D      (cputyp == CPU_SUN4D)
 126 #endif
 127
 128 #define CPU_ISSUN4U             (0)
 129
 130 /*
 131  * Step 3: Define some short-hand for the different MMUs.
 132  */
 133 #define CPU_HAS_SRMMU           (CPU_ISSUN4M || CPU_ISSUN4D)
 134 #define CPU_HAS_SUNMMU          (CPU_ISSUN4 || CPU_ISSUN4C)
 135
 136 #endif /* _KERNEL || _STANDALONE */
 137
 138 #endif /* _SPARC_CPUCONF_H_ */