1 /* $OpenBSD: param.h,v 1.21 2013/03/25 17:46:24 deraadt Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR 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 _MACHINE_PARAM_H_ 36 #define _MACHINE_PARAM_H_ 37 38 #ifdef _KERNEL 39 #ifdef _LOCORE 40 #include <machine/psl.h> 41 #else 42 #include <machine/cpu.h> 43 #endif 44 #endif 45 46 #define _MACHINE amd64 47 #define MACHINE "amd64" 48 #define _MACHINE_ARCH amd64 49 #define MACHINE_ARCH "amd64" 50 #define MID_MACHINE MID_AMD64 51 52 #define PAGE_SHIFT 12 53 #define PAGE_SIZE (1 << PAGE_SHIFT) 54 #define PAGE_MASK (PAGE_SIZE - 1) 55 #define PGSHIFT PAGE_SHIFT /* LOG2(PAGE_SIZE) */ 56 #define PGOFSET PAGE_MASK /* byte offset into page */ 57 58 #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ 59 60 #ifdef _KERNEL 61 62 #define KERNTEXTOFF (KERNBASE+0x1000000) /* start of kernel text */ 63 #define KERNTEXTOFF_HI 0xffffffff 64 #define KERNTEXTOFF_LO 0x81000000 65 66 #define KERNBASE_HI 0xffffffff 67 #define KERNBASE_LO 0x80000000 68 69 #define NBPG PAGE_SIZE /* bytes/page */ 70 71 #define UPAGES 5 /* pages of u-area */ 72 #define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ 73 #define USPACE_ALIGN 0 /* u-area alignment 0-none */ 74 75 #define NMBCLUSTERS 6144 /* map size, max cluster allocation */ 76 77 #ifndef MSGBUFSIZE 78 #define MSGBUFSIZE (16 * PAGE_SIZE) /* default message buffer size */ 79 #endif 80 81 /* 82 * Maximum size of the kernel malloc arena in PAGE_SIZE-sized 83 * logical pages. 84 */ 85 #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 86 87 #endif /* _KERNEL */ 88 89 #endif /* _MACHINE_PARAM_H_ */ 90