1 /* $NetBSD: param.h,v 1.19 2013/10/26 18:07:52 matt 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 MID_MACHINE MID_ARM6 149 150 /* ARM-specific macro to align a stack pointer (downwards). */ 151 #define STACK_ALIGNBYTES (8 - 1) 152 #ifdef __ARM_EABI__ 153 #define ALIGNBYTES32 3 154 #else 155 #define ALIGNBYTES32 7 156 #endif 157 158 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 159 #define DEV_BSIZE (1 << DEV_BSHIFT) 160 #define BLKDEV_IOSIZE 2048 161 162 #ifndef MAXPHYS 163 #define MAXPHYS 65536 /* max I/O transfer size */ 164 #endif 165 166 /* 167 * Constants related to network buffer management. 168 * MCLBYTES must be no larger than NBPG (the software page size), and, 169 * on machines that exchange pages of input or output buffers with mbuf 170 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 171 * of the hardware page size. 172 */ 173 #define MSIZE 256 /* size of an mbuf */ 174 175 #ifndef MCLSHIFT 176 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 177 /* 2K cluster can hold Ether frame */ 178 #endif /* MCLSHIFT */ 179 180 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 181 182 #ifndef NMBCLUSTERS_MAX 183 #define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES) /* Limit to 64MB for clusters */ 184 #endif 185 186 /* 187 * Compatibility /dev/zero mapping. 188 */ 189 #ifdef _KERNEL 190 #ifdef COMPAT_16 191 #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) 192 #endif 193 #endif /* _KERNEL */ 194 195 #endif /* _ARM_PARAM_H_ */ 196