/*      $OpenBSD: param.h,v 1.39 2023/12/14 13:26:49 claudio Exp $      */

/*-
 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
 * Copyright (C) 1995, 1996 TooLs GmbH.
 * 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 TooLs GmbH.
 * 4. The name of TooLs GmbH may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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 _POWERPC_PARAM_H_
#define _POWERPC_PARAM_H_

#ifdef  _KERNEL
#ifndef _LOCORE
#include <machine/cpu.h>
#endif  /* _LOCORE */
#endif

#define MACHINE_ARCH    "powerpc"
#define _MACHINE_ARCH   powerpc
#define MID_MACHINE     MID_POWERPC

#define PAGE_SHIFT      12
#define PAGE_SIZE       (1 << PAGE_SHIFT)
#define PAGE_MASK       (PAGE_SIZE - 1)

#ifdef _KERNEL

#define NBPG            PAGE_SIZE
#define PGSHIFT         PAGE_SHIFT
#define PGOFSET         PAGE_MASK

#define UPAGES          4                       /* pages of u-area */
#define USPACE          (UPAGES * PAGE_SIZE)    /* total size of u-area */
#define USPACE_ALIGN    0                       /* u-area alignment 0-none */

#define NMBCLUSTERS     (32 * 1024)             /* max cluster allocation */

/*
 * Fixed segments
 */
#define PPC_USER_SR             13
#define PPC_KERNEL_SR   14
#define PPC_KERNEL_SEG0 0xfffff0
#define PPC_KERNEL_SEGMENT      (PPC_KERNEL_SEG0 + PPC_KERNEL_SR)
#define PPC_USER_ADDR   ((void *)(PPC_USER_SR << ADDR_SR_SHIFT))

#endif /* _KERNEL */

#endif /* _POWERPC_PARAM_H_ */