/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)param.h 8.1 (Berkeley) 6/11/93
*/
/*
* Sun4M support by Aaron Brown, Harvard University.
* Changes Copyright (c) 1995 The President and Fellows of Harvard College.
* All rights reserved.
*/
#define _MACHINE sparc
#define MACHINE "sparc"
#define _MACHINE_ARCH sparc
#define MACHINE_ARCH "sparc"
#define MID_MACHINE MID_SPARC
#define SUN4_PGSHIFT 13 /* for a sun4 machine */
#define SUN4CM_PGSHIFT 12 /* for a sun4c or sun4m machine */
#define STACK_ALIGNBYTES (8 - 1)
/*
* The following variables are always defined and initialized (in locore)
* so independently compiled modules (e.g. LKMs) can be used irrespective
* of the `options SUN4?' combination a particular kernel was configured with.
* See also the definitions of NBPG, PGOFSET and PGSHIFT below.
*/
#if (defined(_KERNEL) || defined(_STANDALONE)) && !defined(_LOCORE)
extern int nbpg, pgofset, pgshift;
#endif
#if !(defined(PROM_AT_F0) || defined(MSIIEP))
#define KERNBASE 0xf0000000 /* start of kernel virtual space */
#else
/*
* JS1/OF has prom sitting in f000.0000..f007.ffff, modify kernel VA
* layout to work around that. XXX - kernel should live beyond prom on
* those machines.
*/
#define KERNBASE 0xe8000000
#endif
#define KERNEND 0xfe000000 /* end of kernel virtual space */
#define PROM_LOADADDR 0x00004000 /* where the prom loads us */
#define KERNTEXTOFF (KERNBASE+PROM_LOADADDR)/* start of kernel text */
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than NBPG (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
*/
#define MSIZE 256 /* size of an mbuf */
#ifndef MCLSHIFT
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
/* 2K cluster can hold Ether frame */
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
/*
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
* logical pages.
*/
#define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
/*
* microSPARC-IIep is a sun4m but with an integrated PCI controller.
* In a lot of places (like pmap &c) we want it to be treated as SUN4M.
* But since various low-level things are done very differently from
* normal sparcs (and since for now it requires a relocated kernel
* anyway), the MSIIEP kernels are not supposed to support any other
* system. So insist on SUN4M defined and SUN4 and SUN4C not defined.
*/
#if defined(MSIIEP)
#if defined(SUN4) || defined(SUN4C) || defined(SUN4D)
#error "microSPARC-IIep kernels cannot support sun4, sun4c, or sun4d"
#endif
#if !defined(SUN4M)
#error "microSPARC-IIep kernel must have 'options SUN4M'"
#endif
#endif /* MSIIEP */
/*
* Sun4 machines have a page size of 8192. All other machines have a page
* size of 4096. Short cut page size variables if we can.
*/
#if CPU_NTYPES != 0 && !defined(SUN4)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
#elif CPU_NTYPES == 1 && defined(SUN4)
# define NBPG 8192
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4_PGSHIFT
#else
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#endif
/* Default audio blocksize in msec. See sys/dev/audio/audio.c */
#define __AUDIO_BLK_MS (40)
