/* $NetBSD: vmparam.h,v 1.26 2003/08/07 16:27:47 agc Exp $ */
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 _MACHINE_VMPARAM_H_
#define _MACHINE_VMPARAM_H_
/*
* Machine dependent constants for ARM.
*/
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (256UL*1024*1024) /* max text size */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (128UL*1024*1024) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (512UL*1024*1024) /* max data size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (4UL*1024*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (64UL*1024*1024) /* max stack size */
#endif
#ifndef SGROWSIZ
#define SGROWSIZ (128UL*1024) /* amount to grow stack */
#endif
/*
* Address space constants
*/
/*
* The line between user space and kernel space
* Mappings >= KERNEL_BASE are constant across all processes
*/
#ifndef KERNBASE
#define KERNBASE 0xc0000000
#endif
/*
* The virtual address the kernel is linked to run at. For armv4/5 platforms
* the low-order 30 bits of this must match the low-order bits of the physical
* address the kernel is loaded at, so the value is most often provided as a
* kernel config option in the std.platform file. For armv6/7 the kernel can
* be loaded at any 2MB boundary, and KERNVIRTADDR can also be set to any 2MB
* boundary. It is typically overridden in the std.platform file only when
* KERNBASE is also set to a lower address to provide more KVA.
*/
#ifndef KERNVIRTADDR
#define KERNVIRTADDR 0xc0000000
#endif
/*
* max number of non-contig chunks of physical RAM you can have
*/
#define VM_PHYSSEG_MAX 32
/*
* The physical address space may be sparsely populated on some ARM systems.
*/
#define VM_PHYSSEG_SPARSE
/*
* Create one free page pool. Since the ARM kernel virtual address
* space does not include a mapping onto the machine's entire physical
* memory, VM_FREEPOOL_DIRECT is defined as an alias for the default
* pool, VM_FREEPOOL_DEFAULT.
*/
#define VM_NFREEPOOL 1
#define VM_FREEPOOL_DEFAULT 0
#define VM_FREEPOOL_DIRECT 0
/*
* We need just one free list: DEFAULT.
*/
#define VM_NFREELIST 1
#define VM_FREELIST_DEFAULT 0
/*
* The largest allocation size is 1MB.
*/
#define VM_NFREEORDER 9
/*
* Enable superpage reservations: 1 level.
*/
#ifndef VM_NRESERVLEVEL
#define VM_NRESERVLEVEL 1
#endif
/*
* Level 0 reservations consist of 256 pages.
*/
#ifndef VM_LEVEL_0_ORDER
#define VM_LEVEL_0_ORDER 8
#endif
#define VM_MIN_ADDRESS (0x00001000)
#ifndef VM_MAXUSER_ADDRESS
#define VM_MAXUSER_ADDRESS (KERNBASE - 0x00400000) /* !!! PT2MAP_SIZE */
#endif
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
#define USRSTACK SHAREDPAGE
/* initial pagein size of beginning of executable file */
#ifndef VM_INITIAL_PAGEIN
#define VM_INITIAL_PAGEIN 16
#endif
#ifndef VM_MIN_KERNEL_ADDRESS
#define VM_MIN_KERNEL_ADDRESS KERNBASE
#endif
#define VM_MAX_KERNEL_ADDRESS (vm_max_kernel_address)
/*
* How many physical pages per kmem arena virtual page.
*/
#ifndef VM_KMEM_SIZE_SCALE
#define VM_KMEM_SIZE_SCALE (3)
#endif
/*
* Optional floor (in bytes) on the size of the kmem arena.
*/
#ifndef VM_KMEM_SIZE_MIN
#define VM_KMEM_SIZE_MIN (12 * 1024 * 1024)
#endif
/*
* Optional ceiling (in bytes) on the size of the kmem arena: 40% of the
* kernel map.
*/
#ifndef VM_KMEM_SIZE_MAX
#define VM_KMEM_SIZE_MAX ((vm_max_kernel_address - \
VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5)
#endif
extern vm_offset_t vm_max_kernel_address;
#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */
#ifndef VM_MAX_AUTOTUNE_MAXUSERS
#define VM_MAX_AUTOTUNE_MAXUSERS 384
#endif
#define SFBUF
#define SFBUF_MAP
#define PMAP_HAS_DMAP 0
#define PHYS_TO_DMAP(x) ({ panic("No direct map exists"); 0; })
#define DMAP_TO_PHYS(x) ({ panic("No direct map exists"); 0; })
#define DEVMAP_MAX_VADDR ARM_VECTORS_HIGH
/*
* No non-transparent large page support in the pmap.
*/
#define PMAP_HAS_LARGEPAGES 0
/*
* Need a page dump array for minidump.
*/
#define MINIDUMP_PAGE_TRACKING 1
#endif /* _MACHINE_VMPARAM_H_ */
