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#ifndef MACHINE 58#define MACHINE "arm" 59#endif 60#ifndef MACHINE_ARCH 61#if __ARM_ARCH >= 7 62#define MACHINE_ARCH "armv7" 63#else 64#define MACHINE_ARCH "armv6" 65#endif 66#endif 67 68#ifdef SMP 69#ifndef MAXCPU 70#define MAXCPU 4 71#endif 72#else 73#define MAXCPU 1 74#endif 75 76#ifndef MAXMEMDOM 77#define MAXMEMDOM 1 78#endif 79 80#define ALIGNBYTES _ALIGNBYTES 81#define ALIGN(p) _ALIGN(p) 82/* 83 * ALIGNED_POINTER is a boolean macro that checks whether an address 84 * is valid to fetch data elements of type t from on this architecture. 85 * This does not reflect the optimal alignment, just the possibility 86 * (within reasonable limits). 87 * 88 * armv4 and v5 require alignment to the type's size. armv6 requires 8-byte 89 * alignment for the ldrd/strd instructions, but otherwise follows armv7 rules. 90 * armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary; 91 * access to smaller types can be unaligned, except that the compiler may 92 * optimize access to adjacent uint32_t values into a single load/store-multiple 93 * instruction which requires 4-byte alignment, so we must provide the most- 94 * pessimistic answer possible even on armv7. 95 */ 96#define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 97 98/* 99 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 100 * architecture. It should be used with appropriate caution. 101 */ 102#define CACHE_LINE_SHIFT 6 103#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 104 105#define PAGE_SHIFT 12 106#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 107#define PAGE_MASK (PAGE_SIZE - 1) 108 109#define PDR_SHIFT 20 /* log2(NBPDR) */ 110#define NBPDR (1 << PDR_SHIFT) 111#define PDRMASK (NBPDR - 1) 112#define NPDEPG (1 << (32 - PDR_SHIFT)) 113 114#define MAXPAGESIZES 2 /* maximum number of supported page sizes */ 115 116#ifndef KSTACK_PAGES 117#define KSTACK_PAGES 2 118#endif /* !KSTACK_PAGES */ 119 120#ifndef FPCONTEXTSIZE 121#define FPCONTEXTSIZE (0x100) 122#endif 123 124#ifndef KSTACK_GUARD_PAGES 125#define KSTACK_GUARD_PAGES 1 126#endif /* !KSTACK_GUARD_PAGES */ 127 128#define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE) 129 130/* 131 * Mach derived conversion macros 132 */ 133#define trunc_page(x) ((x) & ~PAGE_MASK) 134#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 135#define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK) 136#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 137 138#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 139#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 140 141#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 142#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 143 144#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 145 146#endif /* !_ARM_INCLUDE_PARAM_H_ */ 147