| 1 | /*- |
| 2 | * SPDX-License-Identifier: BSD-4-Clause |
| 3 | * |
| 4 | * Copyright (c) 2001 David E. O'Brien |
| 5 | * Copyright (c) 1990 The Regents of the University of California. |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * This code is derived from software contributed to Berkeley by |
| 9 | * William Jolitz. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. All advertising materials mentioning features or use of this software |
| 20 | * must display the following acknowledgement: |
| 21 | * This product includes software developed by the University of |
| 22 | * California, Berkeley and its contributors. |
| 23 | * 4. Neither the name of the University nor the names of its contributors |
| 24 | * may be used to endorse or promote products derived from this software |
| 25 | * without specific prior written permission. |
| 26 | * |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 37 | * SUCH DAMAGE. |
| 38 | */ |
| 39 | |
| 40 | #ifndef _ARM_INCLUDE_PARAM_H_ |
| 41 | #define _ARM_INCLUDE_PARAM_H_ |
| 42 | |
| 43 | /* |
| 44 | * Machine dependent constants for StrongARM |
| 45 | */ |
| 46 | |
| 47 | #include <machine/_align.h> |
| 48 | |
| 49 | #define STACKALIGNBYTES (8 - 1) |
| 50 | #define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) |
| 51 | |
| 52 | #ifndef MACHINE |
| 53 | #define MACHINE "arm" |
| 54 | #endif |
| 55 | #ifndef MACHINE_ARCH |
| 56 | #define MACHINE_ARCH "armv7" |
| 57 | #endif |
| 58 | |
| 59 | #ifdef SMP |
| 60 | #ifndef MAXCPU |
| 61 | #define MAXCPU 4 |
| 62 | #endif |
| 63 | #else |
| 64 | #define MAXCPU 1 |
| 65 | #endif |
| 66 | |
| 67 | #ifndef MAXMEMDOM |
| 68 | #define MAXMEMDOM 1 |
| 69 | #endif |
| 70 | |
| 71 | #define __HAVE_STATIC_DEVMAP |
| 72 | |
| 73 | #define ALIGNBYTES _ALIGNBYTES |
| 74 | #define ALIGN(p) _ALIGN(p) |
| 75 | /* |
| 76 | * ALIGNED_POINTER is a boolean macro that checks whether an address |
| 77 | * is valid to fetch data elements of type t from on this architecture. |
| 78 | * This does not reflect the optimal alignment, just the possibility |
| 79 | * (within reasonable limits). |
| 80 | * |
| 81 | * armv4 and v5 require alignment to the type's size. armv6 requires 8-byte |
| 82 | * alignment for the ldrd/strd instructions, but otherwise follows armv7 rules. |
| 83 | * armv7 requires that an 8-byte type be aligned to at least a 4-byte boundary; |
| 84 | * access to smaller types can be unaligned, except that the compiler may |
| 85 | * optimize access to adjacent uint32_t values into a single load/store-multiple |
| 86 | * instruction which requires 4-byte alignment, so we must provide the most- |
| 87 | * pessimistic answer possible even on armv7. |
| 88 | */ |
| 89 | #define ALIGNED_POINTER(p, t) ((((unsigned)(p)) & (sizeof(t)-1)) == 0) |
| 90 | |
| 91 | /* |
| 92 | * CACHE_LINE_SIZE is the compile-time maximum cache line size for an |
| 93 | * architecture. It should be used with appropriate caution. |
| 94 | */ |
| 95 | #define CACHE_LINE_SHIFT 6 |
| 96 | #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) |
| 97 | |
| 98 | #define PAGE_SHIFT 12 |
| 99 | #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ |
| 100 | #define PAGE_MASK (PAGE_SIZE - 1) |
| 101 | |
| 102 | #define PDR_SHIFT 20 /* log2(NBPDR) */ |
| 103 | #define NBPDR (1 << PDR_SHIFT) |
| 104 | #define PDRMASK (NBPDR - 1) |
| 105 | #define NPDEPG (1 << (32 - PDR_SHIFT)) |
| 106 | |
| 107 | #define MAXPAGESIZES 2 /* maximum number of supported page sizes */ |
| 108 | |
| 109 | #ifndef KSTACK_PAGES |
| 110 | #define KSTACK_PAGES 2 |
| 111 | #endif /* !KSTACK_PAGES */ |
| 112 | |
| 113 | #ifndef FPCONTEXTSIZE |
| 114 | #define FPCONTEXTSIZE (0x100) |
| 115 | #endif |
| 116 | |
| 117 | #ifndef KSTACK_GUARD_PAGES |
| 118 | #define KSTACK_GUARD_PAGES 1 |
| 119 | #endif /* !KSTACK_GUARD_PAGES */ |
| 120 | |
| 121 | #define USPACE_SVC_STACK_TOP (kstack_pages * PAGE_SIZE) |
| 122 | |
| 123 | /* |
| 124 | * Mach derived conversion macros |
| 125 | */ |
| 126 | #define trunc_1mpage(x) ((unsigned)(x) & ~PDRMASK) |
| 127 | #define round_1mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) |
| 128 | |
| 129 | #define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) |
| 130 | #define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) |
| 131 | |
| 132 | #endif /* !_ARM_INCLUDE_PARAM_H_ */ |