| 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_ */ |