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/* $OpenBSD: param.h,v 1.12 2016/09/03 14:25:27 bluhm Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
*/
#ifndef _SH_PARAM_H_
#define _SH_PARAM_H_
#define _MACHINE_ARCH sh
#define MACHINE_ARCH "sh"
#ifndef MID_MACHINE
#define MID_MACHINE MID_SH3
#endif
#if defined(_KERNEL) && !defined(_LOCORE)
#include <sh/cpu.h>
#endif
/*
* We use 4K pages on the sh3/sh4. Override the PAGE_* definitions
* to be compile-time constants.
*/
#define PAGE_SHIFT 12
#define PAGE_SIZE (1 << PAGE_SHIFT)
#define PAGE_MASK (PAGE_SIZE - 1)
#ifdef _KERNEL
#define NBPG PAGE_SIZE
#define PGSHIFT PAGE_SHIFT
#define PGOFSET PAGE_MASK
#endif
/*
* u-space.
*/
#define UPAGES 3 /* pages of u-area */
#define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */
#define USPACE_ALIGN (0)
#if UPAGES == 1
#error "too small u-area"
#elif UPAGES == 2
#define P1_STACK /* kernel stack is P1-area */
#else
#undef P1_STACK /* kernel stack is P3-area */
#endif
#ifdef _KERNEL
#define NMBCLUSTERS (4 * 1024) /* max cluster allocation */
#ifndef MSGBUFSIZE
#define MSGBUFSIZE PAGE_SIZE /* default message buffer size */
#endif
/*
* Maximum size of the kernel malloc arena in PAGE_SIZE-sized
* logical pages.
*/
#define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT)
#endif /* _KERNEL */
#endif /* _SH_PARAM_H_ */
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