param.h revision 1.21
1/* $NetBSD: param.h,v 1.21 2018/10/18 09:01:52 skrll Exp $ */ 2 3/* 4 * Copyright (c) 1994,1995 Mark Brinicombe. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the RiscBSD team. 18 * 4. The name "RiscBSD" nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#ifndef _ARM_PARAM_H_ 36#define _ARM_PARAM_H_ 37 38/* 39 * Machine dependent constants for all ARM processors 40 */ 41 42/* 43 * For KERNEL code: 44 * MACHINE must be defined by the individual port. This is so that 45 * uname returns the correct thing, etc. 46 * 47 * MACHINE_ARCH may be defined by individual ports as a temporary 48 * measure while we're finishing the conversion to ELF. 49 * 50 * For non-KERNEL code: 51 * If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb". 52 */ 53 54#if defined(_KERNEL) 55# ifndef MACHINE_ARCH /* XXX For now */ 56# ifndef __ARMEB__ 57# ifdef __ARM_EABI__ 58# define _MACHINE_ARCH earm 59# define MACHINE_ARCH "earm" 60# else 61# define _MACHINE_ARCH arm 62# define MACHINE_ARCH "arm" 63# endif 64# else 65# ifdef __ARM_EABI__ 66# define _MACHINE_ARCH earmeb 67# define MACHINE_ARCH "earmeb" 68# else 69# define _MACHINE_ARCH armeb 70# define MACHINE_ARCH "armeb" 71# endif 72# endif /* __ARMEB__ */ 73# endif /* MACHINE_ARCH */ 74#else 75# undef _MACHINE 76# undef MACHINE 77# undef _MACHINE_ARCH 78# undef MACHINE_ARCH 79# define _MACHINE arm 80# define MACHINE "arm" 81# ifndef __ARMEB__ 82# ifdef __ARM_EABI__ 83# ifdef __ARM_PCS_VFP 84# ifdef _ARM_ARCH_7 85# define _MACHINE_ARCH earmv7hf 86# define MACHINE_ARCH "earmv7hf" 87# elif defined(_ARM_ARCH_6) 88# define _MACHINE_ARCH earmv6hf 89# define MACHINE_ARCH "earmv6hf" 90# else 91# define _MACHINE_ARCH earmhf 92# define MACHINE_ARCH "earmhf" 93# endif 94# else 95# ifdef _ARM_ARCH_7 96# define _MACHINE_ARCH earmv7 97# define MACHINE_ARCH "earmv7" 98# elif defined(_ARM_ARCH_6) 99# define _MACHINE_ARCH earmv6 100# define MACHINE_ARCH "earmv6" 101# elif !defined(_ARM_ARCH_5T) 102# define _MACHINE_ARCH earmv4 103# define MACHINE_ARCH "earmv4" 104# else 105# define _MACHINE_ARCH earm 106# define MACHINE_ARCH "earm" 107# endif 108# endif 109# else 110# define _MACHINE_ARCH arm 111# define MACHINE_ARCH "arm" 112# endif 113# else 114# ifdef __ARM_EABI__ 115# ifdef __ARM_PCS_VFP 116# ifdef _ARM_ARCH_7 117# define _MACHINE_ARCH earmv7hfeb 118# define MACHINE_ARCH "earmv7hfeb" 119# elif defined(_ARM_ARCH_6) 120# define _MACHINE_ARCH earmv6hfeb 121# define MACHINE_ARCH "earmv6hfeb" 122# else 123# define _MACHINE_ARCH earmhfeb 124# define MACHINE_ARCH "earmhfeb" 125# endif 126# else 127# ifdef _ARM_ARCH_7 128# define _MACHINE_ARCH earmv7eb 129# define MACHINE_ARCH "earmv7eb" 130# elif defined(_ARM_ARCH_6) 131# define _MACHINE_ARCH earmv6eb 132# define MACHINE_ARCH "earmv6eb" 133# elif !defined(_ARM_ARCH_5T) 134# define _MACHINE_ARCH earmv4eb 135# define MACHINE_ARCH "earmv4eb" 136# else 137# define _MACHINE_ARCH earmeb 138# define MACHINE_ARCH "earmeb" 139# endif 140# endif 141# else 142# define _MACHINE_ARCH armeb 143# define MACHINE_ARCH "armeb" 144# endif 145# endif /* __ARMEB__ */ 146#endif /* !_KERNEL */ 147 148#define MAXCPUS 8 149 150#define MID_MACHINE MID_ARM6 151 152/* ARM-specific macro to align a stack pointer (downwards). */ 153#define STACK_ALIGNBYTES (8 - 1) 154#ifdef __ARM_EABI__ 155#define ALIGNBYTES32 3 156#else 157#define ALIGNBYTES32 7 158#endif 159 160#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 161#define DEV_BSIZE (1 << DEV_BSHIFT) 162#define BLKDEV_IOSIZE 2048 163 164#ifndef MAXPHYS 165#define MAXPHYS 65536 /* max I/O transfer size */ 166#endif 167 168/* 169 * Constants related to network buffer management. 170 * MCLBYTES must be no larger than NBPG (the software page size), and, 171 * on machines that exchange pages of input or output buffers with mbuf 172 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 173 * of the hardware page size. 174 */ 175#define MSIZE 256 /* size of an mbuf */ 176 177#ifndef MCLSHIFT 178#define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 179 /* 2K cluster can hold Ether frame */ 180#endif /* MCLSHIFT */ 181 182#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 183 184#ifndef NMBCLUSTERS_MAX 185#define NMBCLUSTERS_MAX (0x4000000 / MCLBYTES) /* Limit to 64MB for clusters */ 186#endif 187 188/* 189 * Compatibility /dev/zero mapping. 190 */ 191#ifdef _KERNEL 192#ifdef COMPAT_16 193#define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) 194#endif 195#endif /* _KERNEL */ 196 197#endif /* _ARM_PARAM_H_ */ 198