128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
/* $NetBSD: vmparam.h,v 1.2 2000/11/30 12:16:00 bjh21 Exp $ */
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/*
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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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. 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, Berkeley and its contributors.
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* 4. 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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#ifndef _ARM32_VMPARAM_H_
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#define _ARM32_VMPARAM_H_
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#define USRTEXT VM_MIN_ADDRESS
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#define USRSTACK VM_MAXUSER_ADDRESS
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#define MAXTSIZ (0x007f8000) /* max text size */
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#ifndef DFLDSIZ
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#define DFLDSIZ (0x00800000) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (0x00800000) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (512*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (0x00200000) /* max stack size */
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#endif
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/*
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* Size of shared memory map
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*/
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#ifndef SHMMAXPGS
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#define SHMMAXPGS 1024
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#endif
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a `long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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#define MAXSLP 20
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/*
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* Override the default pager_map size, there's not enough KVA.
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*/
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#define PAGER_MAP_SIZE (1 * 1024 * 1024)
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/*
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* Mach derived constants
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*/
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/* Need to link some of these with some in param.h */
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/*
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* These specify the range of virtual pages available to user
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* processes and to the kernel. This is a bit of a delicate balancing
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* act, as we've only got 32Mb between them. There should probably be
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* an option to have separate kernel and user spaces to ease this.
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*/
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#define KVM_SIZE 0x00800000 /* 8Mb */
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/* User VM range */
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#define VM_MIN_ADDRESS ((vm_offset_t)0x00008000)
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#define VM_MAX_ADDRESS ((vm_offset_t)0x02000000 - KVM_SIZE)
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#define VM_MAXUSER_ADDRESS VM_MAX_ADDRESS
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/* Kernel VM range */
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#define VM_MIN_KERNEL_ADDRESS VM_MAX_ADDRESS
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#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0x02000000)
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#define VM_MAXKERN_ADDRESS VM_MAX_KERNEL_ADDRESS
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/* XXX max. amount of KVM to be used by buffers. */
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#ifndef VM_MAX_KERNEL_BUF
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#define VM_MAX_KERNEL_BUF \
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((VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS) / 4)
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#endif
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/* Physical memory parameters */
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#define VM_PHYSSEG_MAX 2
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
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#define VM_PHYSSEG_NOADD /* We won't turn up extra memory during autoconfig */
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#define VM_NFREELIST 2
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#define VM_FREELIST_LOW 1 /* DMA-able memory (bottom 512k phys) */
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#define VM_FREELIST_DEFAULT 0 /* The rest */
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struct pmap_physseg {
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};
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#endif
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/* End of vmparam.h */
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