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 #ifndef _ARM_INCLUDE_PARAM_H_ 42 #define _ARM_INCLUDE_PARAM_H_ 43 44 /* 45 * Machine dependent constants for StrongARM 46 */ 47 48 #include <machine/_align.h> 49 50 #define STACKALIGNBYTES (8 - 1) 51 #define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 52 53 #define __PCI_REROUTE_INTERRUPT 54 55 #ifndef MACHINE 56 #define MACHINE "arm" 57 #endif 58 #ifndef MACHINE_ARCH 59 #if defined(__FreeBSD_ARCH_armv6__) || (defined(__ARM_ARCH) && __ARM_ARCH >= 6) 60 #ifdef __ARMEB__ 61 #define MACHINE_ARCH "armv6eb" 62 #else 63 #define MACHINE_ARCH "armv6" 64 #endif 65 #else 66 #ifdef __ARMEB__ 67 #define MACHINE_ARCH "armeb" 68 #else 69 #define MACHINE_ARCH "arm" 70 #endif 71 #endif 72 #endif 73 #define MID_MACHINE MID_ARM6 74 75 #if defined(SMP) || defined(KLD_MODULE) 76 #ifndef MAXCPU 77 #define MAXCPU 4 78 #endif 79 #else 80 #define MAXCPU 1 81 #endif /* SMP || KLD_MODULE */ 82 83 #define ALIGNBYTES _ALIGNBYTES 84 #define ALIGN(p) _ALIGN(p) 85 /* 86 * ALIGNED_POINTER is a boolean macro that checks whether an address 87 * is valid to fetch data elements of type t from on this architecture. 88 * This does not reflect the optimal alignment, just the possibility 89 * (within reasonable limits). 90 */ 91 #define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) 92 93 /* 94 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 95 * architecture. It should be used with appropriate caution. 96 */ 97 #define CACHE_LINE_SHIFT 6 98 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 99 100 #define PAGE_SHIFT 12 101 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 102 #define PAGE_MASK (PAGE_SIZE - 1) 103 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 104 105 #define PDR_SHIFT 20 /* log2(NBPDR) */ 106 #define NBPDR (1 << PDR_SHIFT) 107 #define NPDEPG (1 << (32 - PDR_SHIFT)) 108 109 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */ 110 111 #ifndef KSTACK_PAGES 112 #define KSTACK_PAGES 2 113 #endif /* !KSTACK_PAGES */ 114 115 #ifndef FPCONTEXTSIZE 116 #define FPCONTEXTSIZE (0x100) 117 #endif 118 119 #ifndef KSTACK_GUARD_PAGES 120 #define KSTACK_GUARD_PAGES 1 121 #endif /* !KSTACK_GUARD_PAGES */ 122 123 #define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE 124 #define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) 125 #define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) 126 #define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10) 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_4mpage(x) ((unsigned)(x) & ~PDRMASK) 133 #define round_4mpage(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