1*bc13e585Srobert /* $OpenBSD: vmparam.h,v 1.9 2023/04/28 18:33:22 robert Exp $ */ 2f24071e5Spatrick /* $NetBSD: vmparam.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $ */ 3f24071e5Spatrick 4f24071e5Spatrick /*- 5f24071e5Spatrick * Copyright (c) 1990 The Regents of the University of California. 6f24071e5Spatrick * All rights reserved. 7f24071e5Spatrick * 8f24071e5Spatrick * This code is derived from software contributed to Berkeley by 9f24071e5Spatrick * William Jolitz. 10f24071e5Spatrick * 11f24071e5Spatrick * Redistribution and use in source and binary forms, with or without 12f24071e5Spatrick * modification, are permitted provided that the following conditions 13f24071e5Spatrick * are met: 14f24071e5Spatrick * 1. Redistributions of source code must retain the above copyright 15f24071e5Spatrick * notice, this list of conditions and the following disclaimer. 16f24071e5Spatrick * 2. Redistributions in binary form must reproduce the above copyright 17f24071e5Spatrick * notice, this list of conditions and the following disclaimer in the 18f24071e5Spatrick * documentation and/or other materials provided with the distribution. 19f24071e5Spatrick * 3. Neither the name of the University nor the names of its contributors 20f24071e5Spatrick * may be used to endorse or promote products derived from this software 21f24071e5Spatrick * without specific prior written permission. 22f24071e5Spatrick * 23f24071e5Spatrick * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24f24071e5Spatrick * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25f24071e5Spatrick * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26f24071e5Spatrick * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27f24071e5Spatrick * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28f24071e5Spatrick * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29f24071e5Spatrick * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30f24071e5Spatrick * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31f24071e5Spatrick * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32f24071e5Spatrick * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33f24071e5Spatrick * SUCH DAMAGE. 34f24071e5Spatrick * 35f24071e5Spatrick * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 36f24071e5Spatrick */ 37f24071e5Spatrick 38f24071e5Spatrick #ifndef _MACHINE_VMPARAM_H_ 39f24071e5Spatrick #define _MACHINE_VMPARAM_H_ 40f24071e5Spatrick 41f24071e5Spatrick /* 42f24071e5Spatrick * Machine dependent constants for arm64. 43f24071e5Spatrick */ 44f24071e5Spatrick 45f24071e5Spatrick #define USRSTACK VM_MAXUSER_ADDRESS 46f24071e5Spatrick 47f24071e5Spatrick /* 48f24071e5Spatrick * Virtual memory related constants, all in bytes 49f24071e5Spatrick */ 50f24071e5Spatrick #define MAXTSIZ ((paddr_t)256*1024*1024) /* max text size */ 51f24071e5Spatrick #ifndef DFLDSIZ 52f24071e5Spatrick #define DFLDSIZ ((paddr_t)512*1024*1024) /* initial data size limit */ 53f24071e5Spatrick #endif 54f24071e5Spatrick #ifndef MAXDSIZ 55*bc13e585Srobert #define MAXDSIZ ((paddr_t)64*1024*1024*1024) /* max data size */ 56f24071e5Spatrick #endif 57f24071e5Spatrick #ifndef BRKSIZ 58f24071e5Spatrick #define BRKSIZ ((paddr_t)16*1024*1024*1024) /* heap gap size */ 59f24071e5Spatrick #endif 60f24071e5Spatrick #ifndef DFLSSIZ 61f24071e5Spatrick #define DFLSSIZ ((paddr_t)2*1024*1024) /* initial stack size limit */ 62f24071e5Spatrick #endif 63f24071e5Spatrick #ifndef MAXSSIZ 64de6c426dSnaddy #define MAXSSIZ ((paddr_t)32*1024*1024) /* max stack size */ 65f24071e5Spatrick #endif 66f24071e5Spatrick 67f24071e5Spatrick #define STACKGAP_RANDOM 256*1024 68f24071e5Spatrick 69f24071e5Spatrick /* 70f24071e5Spatrick * Size of shared memory map 71f24071e5Spatrick */ 72f24071e5Spatrick #ifndef SHMMAXPGS 73f24071e5Spatrick #define SHMMAXPGS 1024 74f24071e5Spatrick #endif 75f24071e5Spatrick 76f24071e5Spatrick /* 77f24071e5Spatrick * Size of User Raw I/O map 78f24071e5Spatrick */ 79f24071e5Spatrick #define USRIOSIZE 300 80f24071e5Spatrick 81f24071e5Spatrick /* 82f24071e5Spatrick * Kernel base 83f24071e5Spatrick */ 84f24071e5Spatrick #define KERNEL_BASE 0xffffff8000000000ULL 85f24071e5Spatrick 86f24071e5Spatrick /* 87f24071e5Spatrick * Mach derived constants 88f24071e5Spatrick */ 89f24071e5Spatrick 90f24071e5Spatrick /* user/kernel map constants */ 91f24071e5Spatrick #define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE) 92272c4e0cSkettenis #define USER_SPACE_BITS 39 93f24071e5Spatrick #define VM_MAXUSER_ADDRESS ((1ULL << USER_SPACE_BITS) - 0x8000) 94f24071e5Spatrick #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 95e8dad7d8Skettenis #ifdef _KERNEL 96e8dad7d8Skettenis #define VM_MIN_STACK_ADDRESS (3ULL << (USER_SPACE_BITS - 2)) 97e8dad7d8Skettenis #endif 98f24071e5Spatrick #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xffffff8000000000ULL) 999a39d018Spatrick #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xffffff83ffffffffULL) 100f24071e5Spatrick 101f24071e5Spatrick /* virtual sizes (bytes) for various kernel submaps */ 102f24071e5Spatrick #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 103f24071e5Spatrick 104b27f2560Skettenis #define VM_PHYSSEG_MAX 32 105b27f2560Skettenis #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 106f24071e5Spatrick #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 107f24071e5Spatrick 108f24071e5Spatrick #endif /* _MACHINE_VMPARAM_H_ */ 109