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/* $NetBSD: param.h,v 1.34 2021/05/30 07:20:00 rin 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"
#include "opt_kasan.h"
#include "opt_param.h"
#endif
/*
* Machine dependent constants for ARM6+ processors
*/
/* These are defined in the Port File before it includes
* this file. */
#ifndef PGSHIFT
#define PGSHIFT 12 /* LOG2(NBPG) */
#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 */
#ifdef KASAN
#define UPAGES 4
#else
#define UPAGES 2
#endif
#define USPACE (UPAGES * NBPG) /* total size 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) && !defined(KASAN)
#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)
#ifdef _KERNEL
#ifndef _LOCORE
#ifndef __HIDE_DELAY
void delay(unsigned);
#define DELAY(x) delay(x)
#endif
#endif
#endif
#include <arm/param.h>
#endif /* _ARM_ARM32_PARAM_H_ */
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