param.h revision 1.2
1/* $OpenBSD: param.h,v 1.2 2017/08/09 03:06:55 jsg 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#include <machine/cpu.h> 40#endif 41 42#define _MACHINE arm64 43#define MACHINE "arm64" 44#define _MACHINE_ARCH aarch64 45#define MACHINE_ARCH "aarch64" 46#define MID_MACHINE MID_ARM64 47 48#define PAGE_SHIFT 12 49#define PAGE_SIZE (1 << PAGE_SHIFT) 50#define PAGE_MASK (PAGE_SIZE - 1) 51 52#define KERNBASE 0xffffff8000000000ULL /* start of kernel virtual space */ 53 54#ifdef _KERNEL 55 56//#define KERNBASE_HI 0xffffffff 57//#define KERNBASE_LO 0x80000000 58 59#define NBPG PAGE_SIZE /* bytes/page */ 60#define PGSHIFT PAGE_SHIFT /* LOG2(PAGE_SIZE) */ 61#define PGOFSET PAGE_MASK /* byte offset into page */ 62 63#define UPAGES 5 /* pages of u-area */ 64#define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ 65#define USPACE_ALIGN 0 /* u-area alignment 0-none */ 66 67#define NMBCLUSTERS 4096 /* map size, max cluster allocation */ 68 69#ifndef MSGBUFSIZE 70#define MSGBUFSIZE (16 * PAGE_SIZE) /* default message buffer size */ 71#endif 72 73/* 74 * Maximum size of the kernel malloc arena in PAGE_SIZE-sized 75 * logical pages. 76 */ 77#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 78 79#define STACKALIGNBYTES (16 - 1) 80#define STACKALIGN(p) ((u_long)(p) &~ STACKALIGNBYTES) 81 82#endif /* _KERNEL */ 83 84#endif /* _MACHINE_PARAM_H_ */ 85