/* $NetBSD: vmparam.h,v 1.1 2014/09/03 19:34:26 matt Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of 3am Software Foundry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _OR1K_VMPARAM_H_ #define _OR1K_VMPARAM_H_ /* * OR1K supports 1 page size: 8KB. */ #define PAGE_SHIFT 13 #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (PAGE_SIZE - 1) #define USPACE 16384 #define UPAGES (USPACE >> PAGE_SHIFT) /* * USRSTACK is the top (end) of the user stack. The user VA space is a * 32-bit address space starting at 0. Place the stack at its top end. */ #define USRSTACK ((vaddr_t) 0x80000000U - PAGE_SIZE) #ifndef MAXTSIZ #define MAXTSIZ (1UL << 26) /* 32bit max text size (64MB) */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1UL << 30) /* max data size (1024MB) */ #endif #ifndef MAXSSIZ #define MAXSSIZ (1UL << 26) /* max stack size (64MB) */ #endif #ifndef DFLDSIZ #define DFLDSIZ (1UL << 27) /* 32bit default data size (128MB) */ #endif #ifndef DFLSSIZ #define DFLSSIZ (1UL << 21) /* 32bit default stack size (2MB) */ #endif #define VM_MIN_ADDRESS ((vaddr_t) 0x0) #define VM_MAXUSER_ADDRESS ((vaddr_t) 0x80000000 - PAGE_SIZE) #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS /* * Give ourselves 64GB of mappable kernel space. That leaves the rest * to be user for directly mapped (block addressable) addresses. */ #define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0x80000000L) #define VM_MAX_KERNEL_ADDRESS ((vaddr_t) -PAGE_SIZE) /* virtual sizes (bytes) for various kernel submaps */ #define USRIOSIZE (PAGE_SIZE / 8) #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) /* */ #define VM_PHYSSEG_MAX 16 /* XXX */ #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH #define VM_NFREELIST 1 #define VM_FREELIST_DEFAULT 0 #endif /* _OR1K_VMPARAM_H_ */ |