param.h revision 1.6 
1/*	$OpenBSD: param.h,v 1.6 2018/09/14 13:58:20 claudio Exp $	*/
2
3/*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef	_MACHINE_PARAM_H_
36#define	_MACHINE_PARAM_H_
37
38#ifdef _KERNEL
39#ifndef _LOCORE
40#include <machine/cpu.h>
41#endif
42#endif
43
44#define	_MACHINE	arm64
45#define	MACHINE		"arm64"
46#define	_MACHINE_ARCH	aarch64
47#define	MACHINE_ARCH	"aarch64"
48#define	MID_MACHINE	MID_ARM64
49
50#define	PAGE_SHIFT	12
51#define	PAGE_SIZE	(1 << PAGE_SHIFT)
52#define	PAGE_MASK	(PAGE_SIZE - 1)
53
54#define	KERNBASE	0xffffff8000000000ULL	/* start of kernel virtual space */
55
56#ifdef _KERNEL
57
58#define	NBPG		PAGE_SIZE		/* bytes/page */
59#define	PGSHIFT		PAGE_SHIFT		/* LOG2(PAGE_SIZE) */
60#define	PGOFSET		PAGE_MASK		/* byte offset into page */
61
62#define	UPAGES		5			/* pages of u-area */
63#define	USPACE		(UPAGES * PAGE_SIZE)	/* total size of u-area */
64#define	USPACE_ALIGN	0			/* u-area alignment 0-none */
65
66#define	NMBCLUSTERS	(64 * 1024)		/* max cluster allocation */
67
68#ifndef	MSGBUFSIZE
69#define	MSGBUFSIZE	(16 * PAGE_SIZE)	/* default message buffer size */
70#endif
71
72/*
73 * Maximum size of the kernel malloc arena in PAGE_SIZE-sized
74 * logical pages.
75 */
76#define	NKMEMPAGES_MAX_DEFAULT	((128 * 1024 * 1024) >> PAGE_SHIFT)
77
78#define	STACKALIGNBYTES		(16 - 1)
79#define	STACKALIGN(p)		((u_long)(p) &~ STACKALIGNBYTES)
80
81#define __HAVE_ACPI
82#define __HAVE_FDT
83
84#endif /* _KERNEL */
85
86#endif /* _MACHINE_PARAM_H_ */
87