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/*-
* Copyright (c) 2001 David E. O'Brien
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS 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.
*
* from: @(#)param.h 5.8 (Berkeley) 6/28/91
* $FreeBSD$
*/
/*
* Machine dependent constants for PowerPC (32-bit only currently)
*/
#include <machine/pte.h>
/*
* Round p (pointer or byte index) up to a correctly-aligned value
* for all data types (int, long, ...). The result is unsigned int
* and must be cast to any desired pointer type.
*/
#ifndef _ALIGNBYTES
#define _ALIGNBYTES (sizeof(int) - 1)
#endif
#ifndef _ALIGN
#define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
#endif
#ifndef _MACHINE
#define _MACHINE "powerpc"
#endif
#ifndef _MACHINE_ARCH
#define _MACHINE_ARCH "powerpc"
#endif
#ifndef _NO_NAMESPACE_POLLUTION
#ifndef _MACHINE_PARAM_H_
#define _MACHINE_PARAM_H_
#ifndef MACHINE
#define MACHINE "powerpc"
#endif
#ifndef MACHINE_ARCH
#define MACHINE_ARCH "powerpc"
#endif
#define MID_MACHINE MID_POWERPC
#if !defined(LOCORE)
#include <machine/cpu.h>
#endif
#ifdef SMP
#define MAXCPU 2
#else
#define MAXCPU 1
#endif /* SMP */
#define ALIGNBYTES _ALIGNBYTES
#define ALIGN(p) _ALIGN(p)
#define PAGE_SHIFT 12
#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
#define PAGE_MASK (PAGE_SIZE - 1)
#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
#define KERNBASE 0x100000 /* start of kernel virtual */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#ifndef KSTACK_UPAGES
#define KSTACK_PAGES 4 /* includes pcb */
#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
#endif
#define USPACE (KSTACK_PAGES * PAGE_SIZE) /* total size of pcb */
#define UAREA_PAGES 1 /* holds struct user WITHOUT PCB */
/*
* Mach derived conversion macros
*/
#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
#define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK)
#define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
#define powerpc_btop(x) ((unsigned)(x) >> PAGE_SHIFT)
#define powerpc_ptob(x) ((unsigned)(x) << PAGE_SHIFT)
#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
/* XXX: NetBSD defines that we're using for the moment */
#define USER_SR 13
#define KERNEL_SR 14
#define KERNEL_VSIDBITS 0xfffff
#define KERNEL_SEGMENT (0xfffff0 + KERNEL_SR)
#define EMPTY_SEGMENT 0xfffff0
#define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT))
#define SEGMENT_LENGTH 0x10000000
#define SEGMENT_MASK 0xf0000000
#if !defined(NPMAPS)
#define NPMAPS 32768
#endif /* !defined(NPMAPS) */
#if !defined(MSGBUFSIZE)
#define MSGBUFSIZE PAGE_SIZE
#endif /* !defined(MSGBUFSIZE) */
/*
* XXX: Stop NetBSD msgbuf_paddr code from happening.
*/
#define MSGBUFADDR
#endif /* !_MACHINE_PARAM_H_ */
#endif /* !_NO_NAMESPACE_POLLUTION */
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