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Diffstat (limited to 'sys/arm/include/vmparam.h')
| -rw-r--r-- | sys/arm/include/vmparam.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/sys/arm/include/vmparam.h b/sys/arm/include/vmparam.h new file mode 100644 index 000000000000..15807923cefb --- /dev/null +++ b/sys/arm/include/vmparam.h @@ -0,0 +1,205 @@ +/* $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 +#define MINIDUMP_STARTUP_PAGE_TRACKING 0 + +#endif /* _MACHINE_VMPARAM_H_ */ |