1 /*-
2 * Copyright (c) 2001 David E. O'Brien
3 * Copyright (c) 1990 The Regents of the University of California.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * William Jolitz.
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 the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
38 * $FreeBSD: releng/5.0/sys/arm/include/param.h 103436 2002-09-17 01:49:00Z peter $
39 */
40
41 /*
42 * Machine dependent constants for StrongARM
43 */
44
45 /*
46 * Round p (pointer or byte index) up to a correctly-aligned value
47 * for all data types (int, long, ...). The result is unsigned int
48 * and must be cast to any desired pointer type.
49 */
50 #ifndef _ALIGNBYTES
51 #define _ALIGNBYTES (sizeof(int) - 1)
52 #endif
53 #ifndef _ALIGN
54 #define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
55 #endif
56
57 #ifndef _MACHINE
58 #define _MACHIN "arm32"
59 #endif
60 #ifndef _MACHINE_ARCH
61 #define _MACHINE_ARCH "arm32"
62 #endif
63
64 #ifndef _NO_NAMESPACE_POLLUTION
65
66 #ifndef _MACHINE_PARAM_H_
67 #define _MACHINE_PARAM_H_
68
69 #ifndef MACHINE
70 #define MACHINE "arm32"
71 #endif
72 #ifndef MACHINE_ARCH
73 #define MACHINE_ARCH "arm32"
74 #endif
75 #define MID_MACHINE MID_ARM32
76
77 #include <machine/cpu.h>
78
79 #ifdef SMP
80 #define MAXCPU 2
81 #else
82 #define MAXCPU 1
83 #endif /* SMP */
84
85 #define ALIGNBYTES _ALIGNBYTES
86 #define ALIGN(p) _ALIGN(p)
87
88 #define PAGE_SHIFT 12
89 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
90 #define PAGE_MASK (PAGE_SIZE - 1)
91 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
92
93 #define KERNBASE 0x100000 /* start of kernel virtual */
94 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
95
96 #define UPAGES 2 /* pages of u-area */
97 #define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */
98
99 /*
100 * Mach derived conversion macros
101 */
102 #define trunc_page(x) ((x) & ~PAGE_MASK)
103 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
104 #define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK)
105 #define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
106
107 #define atop(x) ((unsigned)(x) >> PAGE_SHIFT)
108 #define ptoa(x) ((unsigned)(x) << PAGE_SHIFT)
109
110 #define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT)
111 #define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT)
112
113 #define pgtok(x) ((x) * (PAGE_SIZE / 1024))
114
115 #endif /* !_MACHINE_PARAM_H_ */
116 #endif /* !_NO_NAMESPACE_POLLUTION */
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