2012-11-26 16:59:26 +01:00
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/* $NetBSD: param.h,v 1.17 2012/08/03 08:11:40 matt Exp $ */
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2012-07-04 00:21:37 +02:00
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/*
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* Copyright (c) 1994,1995 Mark Brinicombe.
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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 RiscBSD team.
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* 4. The name "RiscBSD" nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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 _ARM_PARAM_H_
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#define _ARM_PARAM_H_
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/*
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* Machine dependent constants for all ARM processors
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*/
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/*
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* For KERNEL code:
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* MACHINE must be defined by the individual port. This is so that
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* uname returns the correct thing, etc.
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*
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* MACHINE_ARCH may be defined by individual ports as a temporary
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* measure while we're finishing the conversion to ELF.
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*
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* For non-KERNEL code:
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* If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb".
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*/
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#if defined(_KERNEL)
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#ifndef MACHINE_ARCH /* XXX For now */
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#ifndef __ARMEB__
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#define _MACHINE_ARCH arm
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#define MACHINE_ARCH "arm"
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#else
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#define _MACHINE_ARCH armeb
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#define MACHINE_ARCH "armeb"
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#endif /* __ARMEB__ */
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#endif /* MACHINE_ARCH */
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#else
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#undef _MACHINE
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#undef MACHINE
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#undef _MACHINE_ARCH
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#undef MACHINE_ARCH
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#define _MACHINE arm
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#define MACHINE "arm"
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#ifndef __ARMEB__
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#define _MACHINE_ARCH arm
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#define MACHINE_ARCH "arm"
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#else
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#define _MACHINE_ARCH armeb
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#define MACHINE_ARCH "armeb"
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#endif /* __ARMEB__ */
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#endif /* !_KERNEL */
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#define MID_MACHINE MID_ARM6
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/* ARM-specific macro to align a stack pointer (downwards). */
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2012-11-26 16:59:26 +01:00
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#define STACK_ALIGNBYTES (8 - 1)
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#ifdef __ARM_EABI__
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#define ALIGNBYTES32 3
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#else
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#define ALIGNBYTES32 7
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#endif
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2012-07-04 00:21:37 +02:00
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define DEV_BSIZE (1 << DEV_BSHIFT)
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#define BLKDEV_IOSIZE 2048
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#ifndef MAXPHYS
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#define MAXPHYS 65536 /* max I/O transfer size */
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#endif
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than NBPG (the software page size), and,
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* on machines that exchange pages of input or output buffers with mbuf
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* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
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* of the hardware page size.
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*/
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#define MSIZE 256 /* size of an mbuf */
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#ifndef MCLSHIFT
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#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
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/* 2K cluster can hold Ether frame */
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#endif /* MCLSHIFT */
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#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
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#ifndef NMBCLUSTERS_MAX
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#define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES) /* Limit to 64MB for clusters */
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#endif
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/*
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* Compatibility /dev/zero mapping.
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*/
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#ifdef _KERNEL
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#ifdef COMPAT_16
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#define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM))
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#endif
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#endif /* _KERNEL */
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#ifdef __minix
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/* Minix expect to find in this file PAGE_* defines. */
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#include <machine/vmparam.h>
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#define PGSHIFT 12 /* LOG2(NBPG) */
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#define NBPG (1 << PGSHIFT) /* bytes/page */
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#define PGOFSET (NBPG-1) /* byte offset into page */
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#define arm_round_page(x) ((((paddr_t)(x)) + PGOFSET) & ~PGOFSET)
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#define arm_trunc_page(x) ((paddr_t)(x) & ~PGOFSET)
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#define trunc_page(x) arm_trunc_page(x)
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#define round_page(x) arm_round_page(x)
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#endif
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#endif /* _ARM_PARAM_H_ */
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