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      1 /*	$NetBSD: param.h,v 1.16 2021/05/31 14:38:56 simonb Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1982, 1986, 1990, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	from: Utah Hdr: machparam.h 1.16 92/12/20
     37  *	from: @(#)param.h	8.1 (Berkeley) 6/10/93
     38  */
     39 
     40 #ifndef	_MACHINE_PARAM_H_
     41 #define	_MACHINE_PARAM_H_
     42 
     43 #ifdef _KERNEL_OPT
     44 #include "opt_param.h"
     45 #endif
     46 
     47 /*
     48  * Machine dependent constants for the Sun2 series.
     49  */
     50 #define	_MACHINE	sun2
     51 #define	MACHINE		"sun2"
     52 #define	_MACHINE_ARCH	m68000
     53 #define	MACHINE_ARCH	"m68000"
     54 #define	MID_MACHINE	MID_M680002K
     55 
     56 #define PGSHIFT		11		/* LOG2(NBPG) */
     57 
     58 #ifdef MSGBUFSIZE
     59 #error "MSGBUFSIZE is not user-adjustable for this arch"
     60 #endif
     61 #define MSGBUFOFF	0x0
     62 #define MSGBUFSIZE	((NBPG * 4) - MSGBUFOFF)
     63 
     64 /* This is needed by ps (actually USPACE). */
     65 #define	UPAGES		(16384 / NBPG)		/* pages of u-area */
     66 
     67 #if defined(_KERNEL) || defined(_STANDALONE)
     68 
     69 #define	KERNBASE	0x00006000	/* start of kernel virtual */
     70 #define	KERN_END	0x00E00000	/* end of kernel virtual */
     71 
     72 #define	MAXBSIZE	0x4000		/* max FS block size */
     73 #define	MAXPHYS		0xe000
     74 
     75 /*
     76  * XXX fredette - we force a small cluster size to help me debug
     77  * this on my low-memory machine.  These should go away at some point.
     78  */
     79 #define MCLSHIFT	10
     80 
     81 /*
     82  * XXX fredette - we must define this, otw UBC consumes 8MB of kernel VM.
     83  * For now, we make it absurdly small, perhaps it can grow later.
     84  */
     85 #define	UBC_NWINS	32
     86 
     87 #define	MAXEXEC		1
     88 
     89 #endif	/* _KERNEL */
     90 
     91 #include <m68k/param.h>
     92 
     93 /*
     94  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
     95  * logical pages.
     96  */
     97 #define	NKMEMPAGES_MIN_DEFAULT	((4 * 1024 * 1024) >> PAGE_SHIFT)
     98 #define	NKMEMPAGES_MAX_DEFAULT	((8 * 1024 * 1024) >> PAGE_SHIFT)
     99 
    100 #if defined(_KERNEL) && !defined(_LOCORE)
    101 
    102 #include <machine/intr.h>
    103 
    104 extern void _delay(unsigned);
    105 #define delay(us)	_delay((us)<<8)
    106 #define	DELAY(n)	delay(n)
    107 
    108 #endif	/* _KERNEL && !_LOCORE */
    109 #endif	/* !_MACHINE_PARAM_H_ */
    110