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 40#ifndef _ARM_INCLUDE_PARAM_H_ 41#define _ARM_INCLUDE_PARAM_H_ 42 43/* 44 * Machine dependent constants for StrongARM 45 */ 46 47#include <machine/_align.h> 48 49#define STACKALIGNBYTES (8 - 1) 50#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 51 52#define __PCI_REROUTE_INTERRUPT 53 54#ifndef MACHINE 55#define MACHINE "arm" 56#endif 57#ifndef MACHINE_ARCH 58#if __ARM_ARCH >= 7 59#define MACHINE_ARCH "armv7" 60#else 61#define MACHINE_ARCH "armv6" 62#endif 63#endif 64 65#ifdef SMP 66#ifndef MAXCPU 67#define MAXCPU 4 68#endif 69#else 70#define MAXCPU 1 71#endif 72 73#ifndef MAXMEMDOM 74#define MAXMEMDOM 1 75#endif 76 77#define ALIGNBYTES _ALIGNBYTES 78#define ALIGN(p) _ALIGN(p) 79/* 80 * ALIGNED_POINTER is a boolean macro that checks whether an address 81 * is valid to fetch data elements of type t from on this architecture. 82 * This does not reflect the optimal alignment, just the possibility 83 * (within reasonable limits). 84 * 85 * armv4 and v5 require alignment to the type's size. armv6 requires 8-byte 86 * alignment for the ldrd/strd instructions, but otherwise follows armv7 rules. 87 * armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary; 88 * access to smaller types can be unaligned, except that the compiler may 89 * optimize access to adjacent uint32_t values into a single load/store-multiple 90 * instruction which requires 4-byte alignment, so we must provide the most- 91 * pessimistic answer possible even on armv7. 92 */ 93#define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 94 95/* 96 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 97 * architecture. It should be used with appropriate caution. 98 */ 99#define CACHE_LINE_SHIFT 6 100#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 101 102#define PAGE_SHIFT 12 103#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 104#define PAGE_MASK (PAGE_SIZE - 1) 105 106#define PDR_SHIFT 20 /* log2(NBPDR) */ 107#define NBPDR (1 << PDR_SHIFT) 108#define PDRMASK (NBPDR - 1) 109#define NPDEPG (1 << (32 - PDR_SHIFT)) 110 111#define MAXPAGESIZES 2 /* maximum number of supported page sizes */ 112 113#ifndef KSTACK_PAGES 114#define KSTACK_PAGES 2 115#endif /* !KSTACK_PAGES */ 116 117#ifndef FPCONTEXTSIZE 118#define FPCONTEXTSIZE (0x100) 119#endif 120 121#ifndef KSTACK_GUARD_PAGES 122#define KSTACK_GUARD_PAGES 1 123#endif /* !KSTACK_GUARD_PAGES */ 124 125#define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE) 126 127/* 128 * Mach derived conversion macros 129 */ 130#define trunc_page(x) ((x) & ~PAGE_MASK) 131#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 132#define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK) 133#define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 134 135#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 136#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 137 138#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 139#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 140 141#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 142 143#endif /* !_ARM_INCLUDE_PARAM_H_ */ 144