/*      $NetBSD: param.h,v 1.24 2021/07/19 10:28:58 christos 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_PARAM_H_
#define _ARM_PARAM_H_

/*
 * Machine dependent constants for all ARM processors
 */

/*
 * For KERNEL code:
 *      MACHINE must be defined by the individual port.  This is so that
 *      uname returns the correct thing, etc.
 *
 *      MACHINE_ARCH may be defined by individual ports as a temporary
 *      measure while we're finishing the conversion to ELF.
 *
 * For non-KERNEL code:
 *      If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb".
 */

#if defined(_KERNEL)
# ifndef MACHINE_ARCH                   /* XXX For now */
#  ifndef __ARMEB__
#   ifdef __ARM_EABI__
#    define     _MACHINE_ARCH   earm
#    define     MACHINE_ARCH    "earm"
#   else
#    define     _MACHINE_ARCH   arm
#    define     MACHINE_ARCH    "arm"
#   endif
#  else
#   ifdef __ARM_EABI__
#    define     _MACHINE_ARCH   earmeb
#    define     MACHINE_ARCH    "earmeb"
#   else
#    define     _MACHINE_ARCH   armeb
#    define     MACHINE_ARCH    "armeb"
#   endif
#  endif /* __ARMEB__ */
# endif /* MACHINE_ARCH */
#else
# undef _MACHINE
# undef MACHINE
# undef _MACHINE_ARCH
# undef MACHINE_ARCH
# define        _MACHINE        arm
# define        MACHINE         "arm"
# ifndef __ARMEB__
#  ifdef __ARM_EABI__
#   ifdef __ARM_PCS_VFP
#    ifdef _ARM_ARCH_7
#     define    _MACHINE_ARCH   earmv7hf
#     define    MACHINE_ARCH    "earmv7hf"
#    elif defined(_ARM_ARCH_6)
#     define    _MACHINE_ARCH   earmv6hf
#     define    MACHINE_ARCH    "earmv6hf"
#    else
#     define    _MACHINE_ARCH   earmhf
#     define    MACHINE_ARCH    "earmhf"
#    endif
#   else
#    ifdef _ARM_ARCH_7
#     define    _MACHINE_ARCH   earmv7
#     define    MACHINE_ARCH    "earmv7"
#    elif defined(_ARM_ARCH_6)
#     define    _MACHINE_ARCH   earmv6
#     define    MACHINE_ARCH    "earmv6"
#    elif !defined(_ARM_ARCH_5T)
#     define    _MACHINE_ARCH   earmv4
#     define    MACHINE_ARCH    "earmv4"
#    else
#     define    _MACHINE_ARCH   earm
#     define    MACHINE_ARCH    "earm"
#    endif
#   endif
#  else
#   define      _MACHINE_ARCH   arm
#   define      MACHINE_ARCH    "arm"
#  endif
# else
#  ifdef __ARM_EABI__
#   ifdef __ARM_PCS_VFP
#    ifdef _ARM_ARCH_7
#     define    _MACHINE_ARCH   earmv7hfeb
#     define    MACHINE_ARCH    "earmv7hfeb"
#    elif defined(_ARM_ARCH_6)
#     define    _MACHINE_ARCH   earmv6hfeb
#     define    MACHINE_ARCH    "earmv6hfeb"
#    else
#     define    _MACHINE_ARCH   earmhfeb
#     define    MACHINE_ARCH    "earmhfeb"
#    endif
#  else
#    ifdef _ARM_ARCH_7
#     define    _MACHINE_ARCH   earmv7eb
#     define    MACHINE_ARCH    "earmv7eb"
#    elif defined(_ARM_ARCH_6)
#     define    _MACHINE_ARCH   earmv6eb
#     define    MACHINE_ARCH    "earmv6eb"
#    elif !defined(_ARM_ARCH_5T)
#     define    _MACHINE_ARCH   earmv4eb
#     define    MACHINE_ARCH    "earmv4eb"
#    else
#     define    _MACHINE_ARCH   earmeb
#     define    MACHINE_ARCH    "earmeb"
#    endif
#   endif
#  else
#   define      _MACHINE_ARCH   armeb
#   define      MACHINE_ARCH    "armeb"
#  endif
# endif /* __ARMEB__ */
#endif /* !_KERNEL */

#define MAXCPUS         8

#define MID_MACHINE     MID_ARM6

/* ARM-specific macro to align a stack pointer (downwards). */
#define STACK_ALIGNBYTES        (8 - 1)
#ifdef __ARM_EABI__
#define ALIGNBYTES32    3
#else
#define ALIGNBYTES32    7
#endif

/*
 * Constants related to network buffer management.
 * MCLBYTES must be no larger than NBPG (the software page size), and,
 * on machines that exchange pages of input or output buffers with mbuf
 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
 * of the hardware page size.
 */
#define MSIZE           256             /* size of an mbuf */

#ifndef MCLSHIFT
#define MCLSHIFT        11              /* convert bytes to m_buf clusters */
                                        /* 2K cluster can hold Ether frame */
#endif  /* MCLSHIFT */

#define MCLBYTES        (1 << MCLSHIFT) /* size of a m_buf cluster */

#ifndef NMBCLUSTERS_MAX
#define NMBCLUSTERS_MAX (0x4000000 / MCLBYTES)  /* Limit to 64MB for clusters */
#endif

/*
 * Compatibility /dev/zero mapping.
 */
#ifdef _KERNEL
#ifdef COMPAT_16
#define COMPAT_ZERODEV(x)       (x == makedev(0, _DEV_ZERO_oARM))
#endif
#endif /* _KERNEL */

#endif /* _ARM_PARAM_H_ */