1 /* $OpenBSD: vmparam.h,v 1.16 2015/11/01 20:09:59 miod Exp $ */ 2 /* $NetBSD: vmparam.h,v 1.18 2003/05/21 18:04:44 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 6 * All rights reserved. 7 * 8 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed for the NetBSD Project by 21 * Wasabi Systems, Inc. 22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _ARM_VMPARAM_H_ 40 #define _ARM_VMPARAM_H_ 41 42 /* 43 * Virtual Memory parameters common to all arm32 platforms. 44 */ 45 46 #define USRSTACK VM_MAXUSER_ADDRESS 47 #define KERNBASE VM_MAXUSER_ADDRESS 48 49 /* 50 * Note that MAXTSIZ can't be larger than 32M, otherwise the compiler 51 * would have to be changed to not generate "bl" instructions. 52 */ 53 #define MAXTSIZ (32*1024*1024) /* max text size */ 54 #ifndef DFLDSIZ 55 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 56 #endif 57 #ifndef MAXDSIZ 58 #define MAXDSIZ (512*1024*1024) /* max data size */ 59 #endif 60 #ifndef BRKSIZ 61 #define BRKSIZ MAXDSIZ /* heap gap size */ 62 #endif 63 #ifndef DFLSSIZ 64 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 65 #endif 66 #ifndef MAXSSIZ 67 #define MAXSSIZ (8*1024*1024) /* max stack size */ 68 #endif 69 70 #define STACKGAP_RANDOM 256*1024 71 72 /* 73 * Size of SysV shared memory map 74 */ 75 #ifndef SHMMAXPGS 76 #define SHMMAXPGS 1024 77 #endif 78 79 /* 80 * While the ARM architecture defines Section mappings, large pages, 81 * and small pages, the standard page size is (and will always be) 4K. 82 */ 83 #define PAGE_SHIFT 12 84 #define PAGE_SIZE (1 << PAGE_SHIFT) /* bytes/page */ 85 #define PAGE_MASK (PAGE_SIZE - 1) 86 87 /* 88 * Mach derived constants 89 */ 90 #define VM_MIN_ADDRESS ((vaddr_t) PAGE_SIZE) 91 #define VM_MAXUSER_ADDRESS ((vaddr_t) ARM_KERNEL_BASE) 92 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 93 94 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) ARM_KERNEL_BASE) 95 96 #endif /* _ARM_VMPARAM_H_ */ 97