1 /* $NetBSD: param.h,v 1.33 2020/07/10 12:25:09 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 1994,1995 Mark Brinicombe. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the RiscBSD team. 18 * 4. The name "RiscBSD" nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED 23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef _ARM_ARM32_PARAM_H_ 36 #define _ARM_ARM32_PARAM_H_ 37 38 #ifdef _KERNEL_OPT 39 #include "opt_arm32_pmap.h" 40 #include "opt_kasan.h" 41 #endif 42 43 /* 44 * Machine dependent constants for ARM6+ processors 45 */ 46 /* These are defined in the Port File before it includes 47 * this file. */ 48 49 #ifndef PGSHIFT 50 #define PGSHIFT 12 /* LOG2(NBPG) */ 51 #endif 52 #define NBPG (1 << PGSHIFT) /* bytes/page */ 53 #define PGOFSET (NBPG - 1) /* byte offset into page */ 54 #define NPTEPG (NBPG / sizeof(pt_entry_t)) /* PTEs per Page */ 55 56 #define SSIZE 1 /* initial stack size/NBPG */ 57 #define SINCR 1 /* increment of stack/NBPG */ 58 #ifdef KASAN 59 #define UPAGES 4 60 #else 61 #define UPAGES 2 62 #endif 63 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 64 65 #ifndef MSGBUFSIZE 66 #define MSGBUFSIZE 16384 /* default message buffer size */ 67 #endif 68 69 /* 70 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 71 * logical pages. 72 */ 73 #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) 74 75 #if defined(_ARM_ARCH_6) && !defined(KASAN) 76 #define NKMEMPAGES_MAX_DEFAULT ((768 * 1024 * 1024) >> PAGE_SHIFT) 77 #else 78 #define NKMEMPAGES_MAX_DEFAULT ((256 * 1024 * 1024) >> PAGE_SHIFT) 79 #endif 80 81 /* Constants used to divide the USPACE area */ 82 83 /* 84 * The USPACE area contains : 85 * 1. the pcb structure for the process 86 * 2. the kernel (svc) stack 87 * 88 * The layout of the area looks like this 89 * 90 * | uarea | kernel stack | 91 * 92 * The size of the uarea is known. 93 * The kernel stack should be at least 4K is size. 94 * 95 * The stack top addresses are used to set the stack pointers. The stack bottom 96 * addresses at the addresses monitored by the diagnostic code for stack overflows 97 * 98 */ 99 100 #define USPACE_SVC_STACK_TOP (USPACE) 101 #define USPACE_SVC_STACK_BOTTOM (sizeof(struct pcb)) 102 103 #define arm_btop(x) ((unsigned)(x) >> PGSHIFT) 104 #define arm_ptob(x) ((unsigned)(x) << PGSHIFT) 105 106 #ifdef _KERNEL 107 #ifndef _LOCORE 108 #ifndef __HIDE_DELAY 109 void delay(unsigned); 110 #define DELAY(x) delay(x) 111 #endif 112 #endif 113 #endif 114 115 #include <arm/param.h> 116 117 #endif /* _ARM_ARM32_PARAM_H_ */ 118