1 /* $OpenBSD: vmparam.h,v 1.8 2023/11/12 16:37:28 kettenis Exp $ */ 2 /* $NetBSD: vmparam.h,v 1.23 2003/05/22 05:47:07 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1988 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef _MACHINE_VMPARAM_H_ 34 #define _MACHINE_VMPARAM_H_ 35 36 #define ARM_KERNEL_BASE 0xc0000000U 37 38 /* Allow armv7 to have bigger limits than generic arm, allow user to override */ 39 #ifndef MAXDSIZ 40 #define MAXDSIZ (2UL*1024*1024*1024) /* max data size */ 41 #endif 42 #ifndef BRKSIZ 43 #define BRKSIZ MAXDSIZ /* heap gap size */ 44 #endif 45 #ifndef DFLSSIZ 46 #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ 47 #endif 48 #ifndef MAXSSIZ 49 #define MAXSSIZ (32*1024*1024) /* max stack size */ 50 #endif 51 52 #include <arm/vmparam.h> 53 54 #ifdef _KERNEL 55 /* 56 * Address space constants 57 */ 58 59 /* 60 * The line between user space and kernel space 61 * Mappings >= KERNEL_BASE are constant across all processes 62 */ 63 #define KERNEL_BASE ARM_KERNEL_BASE 64 65 #define VM_KERNEL_SPACE_SIZE 0x20000000 66 67 /* 68 * Override the default pager_map size, there's not enough KVA. 69 */ 70 #define PAGER_MAP_SIZE (4 * 1024 * 1024) 71 72 /* 73 * Size of User Raw I/O map 74 */ 75 76 #define USRIOSIZE 300 77 78 /* virtual sizes (bytes) for various kernel submaps */ 79 80 #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) 81 82 /* 83 * max number of non-contig chunks of physical RAM you can have 84 */ 85 86 #define VM_PHYSSEG_MAX 32 87 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 88 89 /* 90 * this indicates that we can't add RAM to the VM system after the 91 * vm system is init'd. 92 */ 93 94 #define VM_PHYSSEG_NOADD 95 96 #endif /* _KERNEL */ 97 98 #endif /* _MACHINE_VMPARAM_H_ */ 99