1 /* $OpenBSD: vmparam.h,v 1.9 2023/04/28 18:33:22 robert Exp $ */ 2 /* $NetBSD: vmparam.h,v 1.1 2003/04/26 18:39:49 fvdl Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 36 */ 37 38 #ifndef _MACHINE_VMPARAM_H_ 39 #define _MACHINE_VMPARAM_H_ 40 41 /* 42 * Machine dependent constants for arm64. 43 */ 44 45 #define USRSTACK VM_MAXUSER_ADDRESS 46 47 /* 48 * Virtual memory related constants, all in bytes 49 */ 50 #define MAXTSIZ ((paddr_t)256*1024*1024) /* max text size */ 51 #ifndef DFLDSIZ 52 #define DFLDSIZ ((paddr_t)512*1024*1024) /* initial data size limit */ 53 #endif 54 #ifndef MAXDSIZ 55 #define MAXDSIZ ((paddr_t)64*1024*1024*1024) /* max data size */ 56 #endif 57 #ifndef BRKSIZ 58 #define BRKSIZ ((paddr_t)16*1024*1024*1024) /* heap gap size */ 59 #endif 60 #ifndef DFLSSIZ 61 #define DFLSSIZ ((paddr_t)2*1024*1024) /* initial stack size limit */ 62 #endif 63 #ifndef MAXSSIZ 64 #define MAXSSIZ ((paddr_t)32*1024*1024) /* max stack size */ 65 #endif 66 67 #define STACKGAP_RANDOM 256*1024 68 69 /* 70 * Size of shared memory map 71 */ 72 #ifndef SHMMAXPGS 73 #define SHMMAXPGS 1024 74 #endif 75 76 /* 77 * Size of User Raw I/O map 78 */ 79 #define USRIOSIZE 300 80 81 /* 82 * Kernel base 83 */ 84 #define KERNEL_BASE 0xffffff8000000000ULL 85 86 /* 87 * Mach derived constants 88 */ 89 90 /* user/kernel map constants */ 91 #define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE) 92 #define USER_SPACE_BITS 39 93 #define VM_MAXUSER_ADDRESS ((1ULL << USER_SPACE_BITS) - 0x8000) 94 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 95 #ifdef _KERNEL 96 #define VM_MIN_STACK_ADDRESS (3ULL << (USER_SPACE_BITS - 2)) 97 #endif 98 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xffffff8000000000ULL) 99 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xffffff83ffffffffULL) 100 101 /* virtual sizes (bytes) for various kernel submaps */ 102 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 103 104 #define VM_PHYSSEG_MAX 32 105 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 106 #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ 107 108 #endif /* _MACHINE_VMPARAM_H_ */ 109