param.h revision 103436
1/*- 2 * Copyright (c) 2001 David E. O'Brien 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 38 * $FreeBSD: head/sys/arm/include/param.h 103436 2002-09-17 01:49:00Z peter $ 39 */ 40 41/* 42 * Machine dependent constants for StrongARM 43 */ 44 45/* 46 * Round p (pointer or byte index) up to a correctly-aligned value 47 * for all data types (int, long, ...). The result is unsigned int 48 * and must be cast to any desired pointer type. 49 */ 50#ifndef _ALIGNBYTES 51#define _ALIGNBYTES (sizeof(int) - 1) 52#endif 53#ifndef _ALIGN 54#define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES) 55#endif 56 57#ifndef _MACHINE 58#define _MACHIN "arm32" 59#endif 60#ifndef _MACHINE_ARCH 61#define _MACHINE_ARCH "arm32" 62#endif 63 64#ifndef _NO_NAMESPACE_POLLUTION 65 66#ifndef _MACHINE_PARAM_H_ 67#define _MACHINE_PARAM_H_ 68 69#ifndef MACHINE 70#define MACHINE "arm32" 71#endif 72#ifndef MACHINE_ARCH 73#define MACHINE_ARCH "arm32" 74#endif 75#define MID_MACHINE MID_ARM32 76 77#include <machine/cpu.h> 78 79#ifdef SMP 80#define MAXCPU 2 81#else 82#define MAXCPU 1 83#endif /* SMP */ 84 85#define ALIGNBYTES _ALIGNBYTES 86#define ALIGN(p) _ALIGN(p) 87 88#define PAGE_SHIFT 12 89#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 90#define PAGE_MASK (PAGE_SIZE - 1) 91#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 92 93#define KERNBASE 0x100000 /* start of kernel virtual */ 94#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 95 96#define UPAGES 2 /* pages of u-area */ 97#define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ 98 99/* 100 * Mach derived conversion macros 101 */ 102#define trunc_page(x) ((x) & ~PAGE_MASK) 103#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 104#define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 105#define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 106 107#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 108#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 109 110#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 111#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 112 113#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 114 115#endif /* !_MACHINE_PARAM_H_ */ 116#endif /* !_NO_NAMESPACE_POLLUTION */ 117