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 * $FreeBSD$ 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 #define STACKALIGNBYTES (8 - 1) 58 #define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 59 60 #ifndef _NO_NAMESPACE_POLLUTION 61 62 #ifndef _MACHINE_PARAM_H_ 63 #define _MACHINE_PARAM_H_ 64 65 #ifndef MACHINE 66 #define MACHINE "arm" 67 #endif 68 #ifndef MACHINE_ARCH 69 #define MACHINE_ARCH "arm" 70 #endif 71 #define MID_MACHINE MID_ARM6 72 73 #ifdef SMP 74 #define MAXCPU 2 75 #else 76 #define MAXCPU 1 77 #endif /* SMP */ 78 79 #define ALIGNBYTES _ALIGNBYTES 80 #define ALIGN(p) _ALIGN(p) 81 82 #define PAGE_SHIFT 12 83 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 84 #define PAGE_MASK (PAGE_SIZE - 1) 85 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 86 87 #define PDR_SHIFT 20 /* log2(NBPDR) */ 88 #define NBPDR (1 << PDR_SHIFT) 89 #define NPDEPG (1 << (32 - PDR_SHIFT)) 90 91 #ifndef KSTACK_PAGES 92 #define KSTACK_PAGES 2 93 #endif /* !KSTACK_PAGES */ 94 95 #ifndef FPCONTEXTSIZE 96 #define FPCONTEXTSIZE (0x100) 97 #endif 98 99 #ifndef KSTACK_GUARD_PAGES 100 #define KSTACK_GUARD_PAGES 1 101 #endif /* !KSTACK_GUARD_PAGES */ 102 103 #define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE 104 #define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) 105 #define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) 106 #define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10) 107 /* 108 * Mach derived conversion macros 109 */ 110 #define trunc_page(x) ((x) & ~PAGE_MASK) 111 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 112 #define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 113 #define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 114 115 #define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 116 #define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 117 118 #define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 119 #define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 120 121 #define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 122 123 #endif /* !_MACHINE_PARAM_H_ */ 124 #endif /* !_NO_NAMESPACE_POLLUTION */ 125