1/*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2001 David E. O'Brien 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 40 * $FreeBSD$ 41 */ 42 43#ifndef _ARM_INCLUDE_PARAM_H_ 44#define _ARM_INCLUDE_PARAM_H_ 45 46/* 47 * Machine dependent constants for StrongARM 48 */ 49 50#include <machine/_align.h> 51 52#define STACKALIGNBYTES (8 - 1) 53#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 54 55#define __PCI_REROUTE_INTERRUPT 56 57#if __ARM_ARCH >= 7 58#define _V_SUFFIX "v7" 59#elif __ARM_ARCH >= 6 60#define _V_SUFFIX "v6" 61#else 62#define _V_SUFFIX "" 63#endif 64 65#ifdef __ARM_BIG_ENDIAN 66#define _EB_SUFFIX "eb" 67#else 68#define _EB_SUFFIX "" 69#endif 70 71#ifndef MACHINE 72#define MACHINE "arm" 73#endif 74#ifndef MACHINE_ARCH 75#define MACHINE_ARCH "arm" _V_SUFFIX _EB_SUFFIX 76#endif 77 78#if defined(SMP) || defined(KLD_MODULE) 79#ifndef MAXCPU 80#define MAXCPU 4 81#endif 82#else 83#define MAXCPU 1 84#endif /* SMP || KLD_MODULE */ 85 86#ifndef MAXMEMDOM 87#define MAXMEMDOM 1 88#endif 89 90#define ALIGNBYTES _ALIGNBYTES 91#define ALIGN(p) _ALIGN(p) 92/* 93 * ALIGNED_POINTER is a boolean macro that checks whether an address 94 * is valid to fetch data elements of type t from on this architecture. 95 * This does not reflect the optimal alignment, just the possibility 96 * (within reasonable limits). 97 * 98 * armv4 and v5 require alignment to the type's size. armv6 requires 8-byte 99 * alignment for the ldrd/strd instructions, but otherwise follows armv7 rules. 100 * armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary; 101 * access to smaller types can be unaligned, except that the compiler may 102 * optimize access to adjacent uint32_t values into a single load/store-multiple 103 * instruction which requires 4-byte alignment, so we must provide the most- 104 * pessimistic answer possible even on armv7. 105 */ 106#define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 107 108/* 109 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 110 * architecture. It should be used with appropriate caution. 111 */ 112#define CACHE_LINE_SHIFT 6 113#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 114 115#define PAGE_SHIFT 12 116#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 117#define PAGE_MASK (PAGE_SIZE - 1) 118 119#define PDR_SHIFT 20 /* log2(NBPDR) */ 120#define NBPDR (1 << PDR_SHIFT) 121#define PDRMASK (NBPDR - 1) 122#define NPDEPG (1 << (32 - PDR_SHIFT)) 123 124#define MAXPAGESIZES 2 /* maximum number of supported page sizes */ 125 126#ifndef KSTACK_PAGES 127#define KSTACK_PAGES 2 128#endif /* !KSTACK_PAGES */ 129 130#ifndef FPCONTEXTSIZE 131#define FPCONTEXTSIZE (0x100) 132#endif 133 134#ifndef KSTACK_GUARD_PAGES 135#define KSTACK_GUARD_PAGES 1 136#endif /* !KSTACK_GUARD_PAGES */ 137 138#define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE) 139 140/* 141 * Mach derived conversion macros 142 */ 143#define trunc_page(x) ((x) & ~PAGE_MASK) 144#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 145#define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK) 146#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 147 148#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 149#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 150 151#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 152#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 153 154#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 155 156#endif /* !_ARM_INCLUDE_PARAM_H_ */ 157