1 /* $OpenBSD: param.h,v 1.14 2023/12/14 13:26:49 claudio Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved. 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. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef _SH_PARAM_H_ 37 #define _SH_PARAM_H_ 38 39 #define _MACHINE_ARCH sh 40 #define MACHINE_ARCH "sh" 41 42 #ifndef MID_MACHINE 43 #define MID_MACHINE MID_SH3 44 #endif 45 46 #if defined(_KERNEL) && !defined(_LOCORE) 47 #include <sh/cpu.h> 48 #endif 49 50 /* 51 * We use 4K pages on the sh3/sh4. Override the PAGE_* definitions 52 * to be compile-time constants. 53 */ 54 #define PAGE_SHIFT 12 55 #define PAGE_SIZE (1 << PAGE_SHIFT) 56 #define PAGE_MASK (PAGE_SIZE - 1) 57 58 #ifdef _KERNEL 59 60 #define NBPG PAGE_SIZE 61 #define PGSHIFT PAGE_SHIFT 62 #define PGOFSET PAGE_MASK 63 64 #endif 65 66 /* 67 * u-space. 68 */ 69 #define UPAGES 3 /* pages of u-area */ 70 #define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ 71 #define USPACE_ALIGN (0) 72 73 #if UPAGES == 1 74 #error "too small u-area" 75 #elif UPAGES == 2 76 #define P1_STACK /* kernel stack is P1-area */ 77 #else 78 #undef P1_STACK /* kernel stack is P3-area */ 79 #endif 80 81 #ifdef _KERNEL 82 83 #define NMBCLUSTERS (8 * 1024) /* max cluster allocation */ 84 85 #ifndef MSGBUFSIZE 86 #define MSGBUFSIZE PAGE_SIZE /* default message buffer size */ 87 #endif 88 89 #endif /* _KERNEL */ 90 91 #endif /* _SH_PARAM_H_ */ 92