1 /* $NetBSD: vmparam.h,v 1.29 2013/02/27 17:50:07 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _ARM_ARM32_VMPARAM_H_ 39 #define _ARM_ARM32_VMPARAM_H_ 40 41 #if defined(_KERNEL) || defined(_KMEMUSER) || defined(__minix) 42 43 /* 44 * Virtual Memory parameters common to all arm32 platforms. 45 */ 46 47 #ifndef __ASSEMBLER__ 48 #include <sys/simplelock.h> /* struct simplelock */ 49 #endif /* __ASSEMBLER__ */ 50 #include <arm/arm32/pte.h> /* pt_entry_t */ 51 52 #define USRSTACK VM_MAXUSER_ADDRESS 53 54 /* 55 * Note that MAXTSIZ can't be larger than 32M, otherwise the compiler 56 * would have to be changed to not generate "bl" instructions. 57 */ 58 #define MAXTSIZ (64*1024*1024) /* max text size */ 59 #ifndef DFLDSIZ 60 #define DFLDSIZ (128*1024*1024) /* initial data size limit */ 61 #endif 62 #ifndef MAXDSIZ 63 #define MAXDSIZ (1024*1024*1024) /* max data size */ 64 #endif 65 #ifndef DFLSSIZ 66 #define DFLSSIZ (2*1024*1024) /* initial stack size limit */ 67 #endif 68 #ifndef MAXSSIZ 69 #define MAXSSIZ (32*1024*1024) /* max stack size */ 70 #endif 71 72 /* 73 * While the ARM architecture defines Section mappings, large pages, 74 * and small pages, the standard page size is (and will always be) 4K. 75 */ 76 #define PAGE_SHIFT PGSHIFT 77 #define PAGE_SIZE (1 << PAGE_SHIFT) 78 #define PAGE_MASK (PAGE_SIZE - 1) 79 80 /* 81 * Mach derived constants 82 */ 83 #define VM_MIN_ADDRESS ((vaddr_t) 0x00001000) 84 #define VM_MAXUSER_ADDRESS ((vaddr_t) KERNEL_BASE - 0x1000) 85 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS 86 87 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) KERNEL_BASE) 88 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) 0xffffefff) 89 90 #ifndef __ASSEMBLER__ 91 /* XXX max. amount of KVM to be used by buffers. */ 92 #ifndef VM_MAX_KERNEL_BUF 93 extern vaddr_t virtual_avail; 94 extern vaddr_t virtual_end; 95 96 #define VM_MAX_KERNEL_BUF \ 97 ((virtual_end - virtual_avail) * 4 / 10) 98 #endif 99 #endif /* __ASSEMBLER__ */ 100 101 #endif /* _KERNEL || _KMEMUSER */ 102 103 #endif /* _ARM_ARM32_VMPARAM_H_ */ 104