1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifdef __arm__
31#include <arm/param.h>
32#else /* !__arm__ */
33
34#ifndef _MACHINE_PARAM_H_
35#define _MACHINE_PARAM_H_
36
37/*
38 * Machine dependent constants for arm64.
39 */
40
41#include <machine/_align.h>
42
43#define STACKALIGNBYTES (16 - 1)
44#define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES)
45
46#ifndef MACHINE
47#define MACHINE "arm64"
48#endif
49#ifndef MACHINE_ARCH
50#define MACHINE_ARCH "aarch64"
51#endif
52#ifndef MACHINE_ARCH32
53#define MACHINE_ARCH32 "armv7"
54#endif
55
56#ifdef SMP
57#ifndef MAXCPU
58#define MAXCPU 1024
59#endif
60#else
61#define MAXCPU 1
62#endif
63
64#ifndef MAXMEMDOM
65#define MAXMEMDOM 8
66#endif
67
68#define ALIGNBYTES _ALIGNBYTES
69#define ALIGN(p) _ALIGN(p)
70/*
71 * ALIGNED_POINTER is a boolean macro that checks whether an address
72 * is valid to fetch data elements of type t from on this architecture.
73 * This does not reflect the optimal alignment, just the possibility
74 * (within reasonable limits).
75 */
76#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
77
78/*
79 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
80 * architecture. It should be used with appropriate caution.
81 */
82#define CACHE_LINE_SHIFT 7
83#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
84
85#define PAGE_SHIFT_4K 12
86#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
87
88#define PAGE_SHIFT_16K 14
89#define PAGE_SIZE_16K (1 << PAGE_SHIFT_16K)
90
91#define PAGE_SHIFT_64K 16
92#define PAGE_SIZE_64K (1 << PAGE_SHIFT_64K)
93
94#define PAGE_SHIFT PAGE_SHIFT_4K
95#define PAGE_SIZE (1 << PAGE_SHIFT)
96#define PAGE_MASK (PAGE_SIZE - 1)
97
98#define MAXPAGESIZES 4 /* maximum number of supported page sizes */
99
100#ifndef KSTACK_PAGES
101#if defined(KASAN) || defined(KMSAN)
102#define KSTACK_PAGES 6
103#else
104#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
105#endif
106#endif
107
108#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
109#define PCPU_PAGES 1
110
111#ifdef PERTHREAD_SSP
112#define NO_PERTHREAD_SSP __nostackprotector
113#else
114#define NO_PERTHREAD_SSP
115#endif
116
117/*
118 * Mach derived conversion macros
119 */
120#define arm64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
121#define arm64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
122
123#endif /* !_MACHINE_PARAM_H_ */
124
125#endif /* !__arm__ */