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__ */ 126