/* $NetBSD: param.h,v 1.27.2.1 2020/06/07 19:06:22 martin Exp $ */ /* * Copyright (c) 1994,1995 Mark Brinicombe. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the RiscBSD team. * 4. The name "RiscBSD" nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _ARM_ARM32_PARAM_H_ #define _ARM_ARM32_PARAM_H_ #ifdef _KERNEL_OPT # include "opt_arm32_pmap.h" #endif /* * Machine dependent constants for ARM6+ processors */ /* These are defined in the Port File before it includes * this file. */ #ifndef PGSHIFT #if defined(_ARM_ARCH_6) #define PGSHIFT 13 /* LOG2(NBPG) */ #else #define PGSHIFT 12 /* LOG2(NBPG) */ #endif #endif #define NBPG (1 << PGSHIFT) /* bytes/page */ #define PGOFSET (NBPG - 1) /* byte offset into page */ #define NPTEPG (NBPG / sizeof(pt_entry_t)) /* PTEs per Page */ #define SSIZE 1 /* initial stack size/NBPG */ #define SINCR 1 /* increment of stack/NBPG */ #define USPACE 8192 /* total size of u-area */ #define UPAGES (USPACE / NBPG) /* pages of u-area */ #ifndef MSGBUFSIZE #define MSGBUFSIZE 16384 /* default message buffer size */ #endif /* * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized * logical pages. */ #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) #if defined(_ARM_ARCH_6) #define NKMEMPAGES_MAX_DEFAULT ((768 * 1024 * 1024) >> PAGE_SHIFT) #else #define NKMEMPAGES_MAX_DEFAULT ((256 * 1024 * 1024) >> PAGE_SHIFT) #endif /* Constants used to divide the USPACE area */ /* * The USPACE area contains : * 1. the pcb structure for the process * 2. the kernel (svc) stack * * The layout of the area looks like this * * | uarea | kernel stack | * * The size of the uarea is known. * The kernel stack should be at least 4K is size. * * The stack top addresses are used to set the stack pointers. The stack bottom * addresses at the addresses monitored by the diagnostic code for stack overflows * */ #define USPACE_SVC_STACK_TOP (USPACE) #define USPACE_SVC_STACK_BOTTOM (sizeof(struct pcb)) #define arm_btop(x) ((unsigned)(x) >> PGSHIFT) #define arm_ptob(x) ((unsigned)(x) << PGSHIFT) #define arm_trunc_page(x) ((unsigned)(x) & ~PGOFSET) #ifdef _KERNEL #ifndef _LOCORE #ifndef __HIDE_DELAY void delay(unsigned); #define DELAY(x) delay(x) #endif #endif #endif #include #endif /* _ARM_ARM32_PARAM_H_ */