1 /* $OpenBSD: vmparam.h,v 1.13 2014/01/30 18:16:41 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 USRTEXT VM_MIN_ADDRESS 47 #define USRSTACK VM_MAXUSER_ADDRESS 48 #define KERNBASE VM_MAXUSER_ADDRESS 49 50 /* 51 * Note that MAXTSIZ can't be larger than 32M, otherwise the compiler 52 * would have to be changed to not generate "bl" instructions. 53 */ 54 #define MAXTSIZ (16*1024*1024) /* max text size */ 55 #ifndef DFLDSIZ 56 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 57 #endif 58 #ifndef MAXDSIZ 59 #define MAXDSIZ (512*1024*1024) /* max data size */ 60 #endif 61 #ifndef BRKSIZ 62 #define BRKSIZ MAXDSIZ /* heap gap size */ 63 #endif 64 #ifndef DFLSSIZ 65 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 66 #endif 67 #ifndef MAXSSIZ 68 #define MAXSSIZ (8*1024*1024) /* max stack size */ 69 #endif 70 71 #define STACKGAP_RANDOM 256*1024 72 73 /* 74 * Size of SysV shared memory map 75 */ 76 #ifndef SHMMAXPGS 77 #define SHMMAXPGS 1024 78 #endif 79 80 /* 81 * While the ARM architecture defines Section mappings, large pages, 82 * and small pages, the standard page size is (and will always be) 4K. 83 */ 84 #define PAGE_SHIFT 12 85 #define PAGE_SIZE (1 << PAGE_SHIFT) /* bytes/page */ 86 #define PAGE_MASK (PAGE_SIZE - 1) 87 88 /* 89 * Mach derived constants 90 */ 91 #define VM_MIN_ADDRESS ((vaddr_t) PAGE_SIZE) 92 #define VM_MAXUSER_ADDRESS ((vaddr_t) ARM_KERNEL_BASE) 93 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 94 95 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) ARM_KERNEL_BASE) 96 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xffffffff) 97 98 #endif /* _ARM_VMPARAM_H_ */ 99