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param.h revision 1.12.50.1
      1  1.12.50.1    chris /*	$NetBSD: param.h,v 1.12.50.1 2008/01/20 16:04:01 chris Exp $	*/
      2        1.1  reinoud 
      3        1.1  reinoud /*
      4        1.1  reinoud  * Copyright (c) 1994,1995 Mark Brinicombe.
      5        1.1  reinoud  * All rights reserved.
      6        1.1  reinoud  *
      7        1.1  reinoud  * Redistribution and use in source and binary forms, with or without
      8        1.1  reinoud  * modification, are permitted provided that the following conditions
      9        1.1  reinoud  * are met:
     10        1.1  reinoud  * 1. Redistributions of source code must retain the above copyright
     11        1.1  reinoud  *    notice, this list of conditions and the following disclaimer.
     12        1.1  reinoud  * 2. Redistributions in binary form must reproduce the above copyright
     13        1.1  reinoud  *    notice, this list of conditions and the following disclaimer in the
     14        1.1  reinoud  *    documentation and/or other materials provided with the distribution.
     15        1.1  reinoud  * 3. All advertising materials mentioning features or use of this software
     16        1.1  reinoud  *    must display the following acknowledgement:
     17        1.1  reinoud  *	This product includes software developed by the RiscBSD team.
     18        1.1  reinoud  * 4. The name "RiscBSD" nor the name of the author may be used to
     19        1.1  reinoud  *    endorse or promote products derived from this software without specific
     20        1.1  reinoud  *    prior written permission.
     21        1.1  reinoud  *
     22        1.1  reinoud  * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
     23        1.1  reinoud  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     24        1.1  reinoud  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25        1.1  reinoud  * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     26        1.1  reinoud  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     27        1.1  reinoud  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     28        1.1  reinoud  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29        1.1  reinoud  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30        1.1  reinoud  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31        1.1  reinoud  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32        1.1  reinoud  * SUCH DAMAGE.
     33        1.1  reinoud  */
     34        1.1  reinoud 
     35        1.3     matt #ifndef	_ARM_ARM32_PARAM_H_
     36        1.3     matt #define	_ARM_ARM32_PARAM_H_
     37        1.1  reinoud 
     38        1.1  reinoud #ifdef _KERNEL
     39        1.1  reinoud #  include <machine/cpu.h>
     40        1.1  reinoud #endif
     41        1.1  reinoud 
     42        1.1  reinoud /*
     43        1.1  reinoud  * Machine dependent constants for ARM6+ processors
     44        1.1  reinoud  */
     45        1.3     matt /* These are defined in the Port File before it includes
     46        1.3     matt  * this file. */
     47        1.1  reinoud 
     48        1.1  reinoud #define	PGSHIFT		12		/* LOG2(NBPG) */
     49        1.1  reinoud #define	NBPG		(1 << PGSHIFT)	/* bytes/page */
     50        1.1  reinoud #define	PGOFSET		(NBPG-1)	/* byte offset into page */
     51        1.1  reinoud #define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))
     52        1.1  reinoud 
     53        1.1  reinoud 
     54        1.1  reinoud #define SSIZE           1               /* initial stack size/NBPG */
     55        1.1  reinoud #define SINCR           1               /* increment of stack/NBPG */
     56       1.11     joff #define UPAGES          2               /* pages of u-area */
     57        1.1  reinoud #define USPACE          (UPAGES * NBPG) /* total size of u-area */
     58        1.1  reinoud 
     59        1.1  reinoud #ifndef MSGBUFSIZE
     60        1.1  reinoud #define MSGBUFSIZE	NBPG		/* default message buffer size */
     61        1.1  reinoud #endif
     62        1.1  reinoud 
     63        1.1  reinoud #ifndef NMBCLUSTERS
     64        1.4      mrg #if defined(_KERNEL_OPT)
     65        1.1  reinoud #include "opt_gateway.h"
     66        1.4      mrg #endif
     67        1.1  reinoud 
     68        1.1  reinoud #ifdef GATEWAY
     69        1.7   briggs #define	NMBCLUSTERS	2048		/* map size, max cluster allocation */
     70        1.1  reinoud #else
     71        1.7   briggs #define	NMBCLUSTERS	1024		/* map size, max cluster allocation */
     72        1.1  reinoud #endif
     73        1.1  reinoud #endif
     74        1.1  reinoud 
     75        1.1  reinoud /*
     76        1.1  reinoud  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
     77        1.1  reinoud  * logical pages.
     78        1.1  reinoud  */
     79        1.1  reinoud #define	NKMEMPAGES_MIN_DEFAULT	((6 * 1024 * 1024) >> PAGE_SHIFT)
     80        1.1  reinoud #define	NKMEMPAGES_MAX_DEFAULT	((7 * 1024 * 1024) >> PAGE_SHIFT)
     81        1.1  reinoud 
     82        1.1  reinoud /* Constants used to divide the USPACE area */
     83        1.1  reinoud 
     84        1.1  reinoud /*
     85        1.1  reinoud  * The USPACE area contains :
     86        1.1  reinoud  * 1. the user structure for the process
     87        1.1  reinoud  * 2. the fp context for FP emulation
     88        1.1  reinoud  * 3. the kernel (svc) stack
     89        1.1  reinoud  *
     90        1.1  reinoud  * The layout of the area looks like this
     91        1.1  reinoud  *
     92  1.12.50.1    chris  * | user area | FP context | kernel stack |
     93        1.1  reinoud  *
     94        1.1  reinoud  * The size of the user area is known.
     95        1.1  reinoud  * The size of the FP context is variable depending of the FP emulator
     96        1.1  reinoud  * in use and whether there is hardware FP support. However we can put
     97        1.1  reinoud  * an upper limit on it.
     98        1.1  reinoud  * The kernel stack should be at least 4K is size.
     99        1.1  reinoud  *
    100        1.1  reinoud  * The stack top addresses are used to set the stack pointers. The stack bottom
    101        1.1  reinoud  * addresses at the addresses monitored by the diagnostic code for stack overflows
    102        1.1  reinoud  *
    103        1.1  reinoud  */
    104        1.1  reinoud 
    105        1.1  reinoud #define FPCONTEXTSIZE			(0x100)
    106        1.1  reinoud #define USPACE_SVC_STACK_TOP		(USPACE)
    107  1.12.50.1    chris #define USPACE_SVC_STACK_BOTTOM		(sizeof(struct user) + FPCONTEXTSIZE + 10)
    108        1.1  reinoud 
    109        1.9  thorpej #define arm_btop(x)			((x) >> PGSHIFT)
    110        1.9  thorpej #define arm_ptob(x)			((x) << PGSHIFT)
    111        1.9  thorpej #define arm_trunc_page(x)		((unsigned)(x) & ~PGOFSET)
    112        1.6    chris 
    113        1.1  reinoud #ifdef _KERNEL
    114        1.1  reinoud #ifndef _LOCORE
    115        1.1  reinoud void	delay __P((unsigned));
    116        1.1  reinoud #define DELAY(x)	delay(x)
    117        1.1  reinoud #endif
    118        1.1  reinoud #endif
    119        1.5    bjh21 
    120        1.5    bjh21 #include <arm/param.h>
    121        1.1  reinoud 
    122        1.3     matt #endif	/* _ARM_ARM32_PARAM_H_ */
    123