| 1 | /* $OpenBSD: vmparam.h,v 1.35 2024/03/29 21:06:14 miod Exp $ */ |
| 2 | /* $NetBSD: vmparam.h,v 1.18 2001/05/01 02:19:19 thorpej Exp $ */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright (c) 1992, 1993 |
| 6 | * The Regents of the University of California. All rights reserved. |
| 7 | * |
| 8 | * This software was developed by the Computer Systems Engineering group |
| 9 | * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and |
| 10 | * contributed to Berkeley. |
| 11 | * |
| 12 | * All advertising materials mentioning features or use of this software |
| 13 | * must display the following acknowledgement: |
| 14 | * This product includes software developed by the University of |
| 15 | * California, Lawrence Berkeley Laboratory. |
| 16 | * |
| 17 | * Redistribution and use in source and binary forms, with or without |
| 18 | * modification, are permitted provided that the following conditions |
| 19 | * are met: |
| 20 | * 1. Redistributions of source code must retain the above copyright |
| 21 | * notice, this list of conditions and the following disclaimer. |
| 22 | * 2. Redistributions in binary form must reproduce the above copyright |
| 23 | * notice, this list of conditions and the following disclaimer in the |
| 24 | * documentation and/or other materials provided with the distribution. |
| 25 | * 3. Neither the name of the University nor the names of its contributors |
| 26 | * may be used to endorse or promote products derived from this software |
| 27 | * without specific prior written permission. |
| 28 | * |
| 29 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 30 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 31 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 32 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 33 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 34 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 35 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 36 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 37 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 38 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 39 | * SUCH DAMAGE. |
| 40 | * |
| 41 | * @(#)vmparam.h 8.1 (Berkeley) 6/11/93 |
| 42 | */ |
| 43 | |
| 44 | /* |
| 45 | * Machine dependent constants for sun4u and sun4v UltraSPARC |
| 46 | */ |
| 47 | |
| 48 | #ifndef VMPARAM_H |
| 49 | #define VMPARAM_H |
| 50 | |
| 51 | #define USRSTACK 0xffffffffffffe000L |
| 52 | |
| 53 | /* |
| 54 | * Virtual memory related constants, all in bytes |
| 55 | */ |
| 56 | /* |
| 57 | * Since the compiler generates `call' instructions we can't |
| 58 | * have more than 4GB in a single text segment. |
| 59 | * |
| 60 | * And since we only have a 40-bit address space, allow half |
| 61 | * of that for data and the other half for stack. |
| 62 | */ |
| 63 | #ifndef MAXTSIZ |
| 64 | #define MAXTSIZ (1L*1024*1024*1024) /* max text size */ |
| 65 | #endif |
| 66 | #ifndef DFLDSIZ |
| 67 | #define DFLDSIZ (128L*1024*1024) /* initial data size limit */ |
| 68 | #endif |
| 69 | #ifndef MAXDSIZ |
| 70 | #define MAXDSIZ (8L*1024*1024*1024) /* max data size */ |
| 71 | #endif |
| 72 | #ifndef BRKSIZ |
| 73 | #define BRKSIZ MAXDSIZ /* heap gap size */ |
| 74 | #endif |
| 75 | #ifndef DFLSSIZ |
| 76 | #define DFLSSIZ (2L*1024*1024) /* initial stack size limit */ |
| 77 | #endif |
| 78 | #ifndef MAXSSIZ |
| 79 | #define MAXSSIZ (32L*1024*1024) /* max stack size */ |
| 80 | #endif |
| 81 | |
| 82 | #define STACKGAP_RANDOM 256*1024 |
| 83 | |
| 84 | /* |
| 85 | * Size of shared memory map |
| 86 | */ |
| 87 | #ifndef SHMMAXPGS |
| 88 | #define SHMMAXPGS 4096 /* 32mb */ |
| 89 | #endif |
| 90 | |
| 91 | /* |
| 92 | * Size of User Raw I/O map |
| 93 | */ |
| 94 | #define USRIOSIZE 300 |
| 95 | |
| 96 | /* |
| 97 | * Mach derived constants |
| 98 | */ |
| 99 | |
| 100 | /* |
| 101 | * User/kernel map constants. |
| 102 | */ |
| 103 | #define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE) |
| 104 | #define VM_MAX_ADDRESS ((vaddr_t)-1) |
| 105 | #define VM_MAXUSER_ADDRESS ((vaddr_t)-PAGE_SIZE) |
| 106 | #ifdef _KERNEL |
| 107 | #define VM_MIN_STACK_ADDRESS ((vaddr_t)0xfffffe0000000000L) |
| 108 | #endif |
| 109 | |
| 110 | /* map PIE into the first quarter of the address space before hole */ |
| 111 | #define VM_PIE_MIN_ADDR PAGE_SIZE |
| 112 | #define VM_PIE_MAX_ADDR 0x10000000000 |
| 113 | |
| 114 | #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) |
| 115 | #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0x000007ffffffffffL) |
| 116 | |
| 117 | /* virtual sizes (bytes) for various kernel submaps */ |
| 118 | #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) |
| 119 | |
| 120 | #define VM_PHYSSEG_MAX 32 /* up to 32 segments */ |
| 121 | #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH |
| 122 | #define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */ |
| 123 | |
| 124 | #endif |