1 /* $OpenBSD: param.h,v 1.38 2018/09/14 13:58:20 claudio Exp $ */ 2 3 /*- 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _POWERPC_PARAM_H_ 35 #define _POWERPC_PARAM_H_ 36 37 #ifdef _KERNEL 38 #ifndef _LOCORE 39 #include <machine/cpu.h> 40 #endif /* _LOCORE */ 41 #endif 42 43 #define MACHINE_ARCH "powerpc" 44 #define _MACHINE_ARCH powerpc 45 #define MID_MACHINE MID_POWERPC 46 47 #define PAGE_SHIFT 12 48 #define PAGE_SIZE (1 << PAGE_SHIFT) 49 #define PAGE_MASK (PAGE_SIZE - 1) 50 51 #ifdef _KERNEL 52 53 #define NBPG PAGE_SIZE 54 #define PGSHIFT PAGE_SHIFT 55 #define PGOFSET PAGE_MASK 56 57 #define UPAGES 4 /* pages of u-area */ 58 #define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */ 59 #define USPACE_ALIGN 0 /* u-area alignment 0-none */ 60 61 #define NMBCLUSTERS (32 * 1024) /* max cluster allocation */ 62 63 /* 64 * Maximum size of the kernel malloc arena in PAGE_SIZE-sized 65 * logical pages. 66 */ 67 #define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT) 68 69 /* 70 * Fixed segments 71 */ 72 #define PPC_USER_SR 13 73 #define PPC_KERNEL_SR 14 74 #define PPC_KERNEL_SEG0 0xfffff0 75 #define PPC_KERNEL_SEGMENT (PPC_KERNEL_SEG0 + PPC_KERNEL_SR) 76 #define PPC_USER_ADDR ((void *)(PPC_USER_SR << ADDR_SR_SHIFT)) 77 78 #endif /* _KERNEL */ 79 80 #endif /* _POWERPC_PARAM_H_ */ 81