139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/* $NetBSD: cpuconf.h,v 1.4 2005/12/11 12:19:05 christos Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)param.h 8.1 (Berkeley) 6/11/93
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*/
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/*
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* Sun4M support by Aaron Brown, Harvard University.
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* Changes Copyright (c) 1995 The President and Fellows of Harvard College.
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* All rights reserved.
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*/
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#ifndef _SPARC_CPUCONF_H_
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#define _SPARC_CPUCONF_H_
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/*
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* Values for the cputyp variable.
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*/
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#define CPU_SUN4 0
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#define CPU_SUN4C 1
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#define CPU_SUN4M 2
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#define CPU_SUN4U 3
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#define CPU_SUN4D 4
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#if defined(_KERNEL) || defined(_STANDALONE)
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#if defined(_KERNEL_OPT)
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#include "opt_sparc_arch.h"
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#endif /* _KERNEL_OPT */
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#ifndef _LOCORE
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extern int cputyp;
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#endif
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/*
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* Shorthand CPU-type macros. Let the compiler optimize away code
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* conditional on constants.
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*/
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/*
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* Step 1: Count the number of CPU types configured into the kernel.
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*/
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#if defined(_KERNEL_OPT)
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#define CPU_NTYPES (defined(SUN4) + defined(SUN4C) + \
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defined(SUN4M) + defined(SUN4D))
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#else
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#define CPU_NTYPES 0
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#endif
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/*
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* Step 2: Define the CPU type predicates. Rules:
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*
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* * If multiple CPU types are configured in, and the CPU type
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* is not one of them, then the test is always false.
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*
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* * If exactly one CPU type is configured in, and it's this
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* one, then the test is always true.
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*
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* * Otherwise, we have to reference the cputyp variable.
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*/
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#if CPU_NTYPES != 0 && !defined(SUN4)
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# define CPU_ISSUN4 (0)
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#elif CPU_NTYPES == 1 && defined(SUN4)
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# define CPU_ISSUN4 (1)
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#else
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# define CPU_ISSUN4 (cputyp == CPU_SUN4)
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#endif
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#if CPU_NTYPES != 0 && !defined(SUN4C)
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# define CPU_ISSUN4C (0)
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#elif CPU_NTYPES == 1 && defined(SUN4C)
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# define CPU_ISSUN4C (1)
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#else
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# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
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#endif
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#if CPU_NTYPES != 0 && !defined(SUN4M)
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# define CPU_ISSUN4M (0)
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#elif CPU_NTYPES == 1 && defined(SUN4M)
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# define CPU_ISSUN4M (1)
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#else
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# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
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#endif
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#if CPU_NTYPES != 0 && !defined(SUN4D)
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# define CPU_ISSUN4D (0)
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#elif CPU_NTYPES == 1 && defined(SUN4D)
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# define CPU_ISSUN4D (1)
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#else
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# define CPU_ISSUN4D (cputyp == CPU_SUN4D)
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#endif
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#define CPU_ISSUN4U (0)
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/*
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* Step 3: Define some short-hand for the different MMUs.
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*/
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#define CPU_HAS_SRMMU (CPU_ISSUN4M || CPU_ISSUN4D)
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#define CPU_HAS_SUNMMU (CPU_ISSUN4 || CPU_ISSUN4C)
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#endif /* _KERNEL || _STANDALONE */
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#endif /* _SPARC_CPUCONF_H_ */
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