1/* $OpenBSD: vmparam.h,v 1.33 2024/01/30 16:43:22 deraadt Exp $ */
2/* $NetBSD: vmparam.h,v 1.1 1996/09/30 16:34:38 ws Exp $ */
3
4/*-
5 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
6 * Copyright (C) 1995, 1996 TooLs GmbH.
7 * All rights reserved.
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 by TooLs GmbH.
20 * 4. The name of TooLs GmbH may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef MACHINE_VMPARAM_H
36#define MACHINE_VMPARAM_H
37
38#define USRSTACK VM_MAXUSER_ADDRESS
39
40#ifndef MAXTSIZ
41#define MAXTSIZ (128*1024*1024) /* max text size */
42#endif
43
44#ifndef DFLDSIZ
45#define DFLDSIZ (64*1024*1024) /* default data size */
46#endif
47
48#ifndef MAXDSIZ
49#define MAXDSIZ (2UL*1024*1024*1024) /* max data size */
50#endif
51
52#ifndef BRKSIZ
53#define BRKSIZ MAXDSIZ /* heap gap size */
54#endif
55
56#ifndef DFLSSIZ
57#define DFLSSIZ (2*1024*1024) /* default stack size */
58#endif
59
60#ifndef MAXSSIZ
61#define MAXSSIZ (32*1024*1024) /* max stack size */
62#endif
63
64#define STACKGAP_RANDOM 256*1024
65
66/*
67 * Size of shared memory map
68 */
69#ifndef SHMMAXPGS
70#define SHMMAXPGS 8192 /* 32mb */
71#endif
72
73/*
74 * Size of User Raw I/O map
75 */
76#define USRIOSIZE 1024
77
78/*
79 * Would like to have MAX addresses = 0, but this doesn't (currently) work
80 */
81#define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE)
82#define VM_MAXUSER_ADDRESS ((vaddr_t)0xfffff000)
83#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
84#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)(PPC_KERNEL_SR << ADDR_SR_SHIFT))
85
86/* map PIE into approximately the first quarter of user va space */
87#define VM_PIE_MIN_ADDR PAGE_SIZE
88#define VM_PIE_MAX_ADDR 0x40000000
89
90#define VM_KERN_ADDRESS_SIZE (PPC_SEGMENT_LENGTH - (32 * 1024 * 1024))
91#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + VM_KERN_ADDRESS_SIZE)
92
93#define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE)
94
95#define VM_PHYSSEG_MAX 32 /* actually we could have this many segments */
96#define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
97#define VM_PHYSSEG_NOADD /* can't add RAM after vm_mem_init */
98
99#endif