sys/arch/arm/include/param.h

   1 /*      $NetBSD: param.h,v 1.19 2013/10/26 18:07:52 matt Exp $  */
   2
   3 /*
   4  * Copyright (c) 1994,1995 Mark Brinicombe.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the RiscBSD team.
  18  * 4. The name "RiscBSD" nor the name of the author may be used to
  19  *    endorse or promote products derived from this software without specific
  20  *    prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifndef _ARM_PARAM_H_
  36 #define _ARM_PARAM_H_
  37
  38 /*
  39  * Machine dependent constants for all ARM processors
  40  */
  41
  42 /*
  43  * For KERNEL code:
  44  *      MACHINE must be defined by the individual port.  This is so that
  45  *      uname returns the correct thing, etc.
  46  *
  47  *      MACHINE_ARCH may be defined by individual ports as a temporary
  48  *      measure while we're finishing the conversion to ELF.
  49  *
  50  * For non-KERNEL code:
  51  *      If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb".
  52  */
  53
  54 #if defined(_KERNEL)
  55 # ifndef MACHINE_ARCH                   /* XXX For now */
  56 #  ifndef __ARMEB__
  57 #   ifdef __ARM_EABI__
  58 #    define     _MACHINE_ARCH   earm
  59 #    define     MACHINE_ARCH    "earm"
  60 #   else
  61 #    define     _MACHINE_ARCH   arm
  62 #    define     MACHINE_ARCH    "arm"
  63 #   endif
  64 #  else
  65 #   ifdef __ARM_EABI__
  66 #    define     _MACHINE_ARCH   earmeb
  67 #    define     MACHINE_ARCH    "earmeb"
  68 #   else
  69 #    define     _MACHINE_ARCH   armeb
  70 #    define     MACHINE_ARCH    "armeb"
  71 #   endif
  72 #  endif /* __ARMEB__ */
  73 # endif /* MACHINE_ARCH */
  74 #else
  75 # undef _MACHINE
  76 # undef MACHINE
  77 # undef _MACHINE_ARCH
  78 # undef MACHINE_ARCH
  79 # define        _MACHINE        arm
  80 # define        MACHINE         "arm"
  81 # ifndef __ARMEB__
  82 #  ifdef __ARM_EABI__
  83 #   ifdef __ARM_PCS_VFP
  84 #    ifdef _ARM_ARCH_7
  85 #     define    _MACHINE_ARCH   earmv7hf
  86 #     define    MACHINE_ARCH    "earmv7hf"
  87 #    elif defined(_ARM_ARCH_6)
  88 #     define    _MACHINE_ARCH   earmv6hf
  89 #     define    MACHINE_ARCH    "earmv6hf"
  90 #    else
  91 #     define    _MACHINE_ARCH   earmhf
  92 #     define    MACHINE_ARCH    "earmhf"
  93 #    endif
  94 #   else
  95 #    ifdef _ARM_ARCH_7
  96 #     define    _MACHINE_ARCH   earmv7
  97 #     define    MACHINE_ARCH    "earmv7"
  98 #    elif defined(_ARM_ARCH_6)
  99 #     define    _MACHINE_ARCH   earmv6
 100 #     define    MACHINE_ARCH    "earmv6"
 101 #    elif !defined(_ARM_ARCH_5T)
 102 #     define    _MACHINE_ARCH   earmv4
 103 #     define    MACHINE_ARCH    "earmv4"
 104 #    else
 105 #     define    _MACHINE_ARCH   earm
 106 #     define    MACHINE_ARCH    "earm"
 107 #    endif
 108 #   endif
 109 #  else
 110 #   define      _MACHINE_ARCH   arm
 111 #   define      MACHINE_ARCH    "arm"
 112 #  endif
 113 # else
 114 #  ifdef __ARM_EABI__
 115 #   ifdef __ARM_PCS_VFP
 116 #    ifdef _ARM_ARCH_7
 117 #     define    _MACHINE_ARCH   earmv7hfeb
 118 #     define    MACHINE_ARCH    "earmv7hfeb"
 119 #    elif defined(_ARM_ARCH_6)
 120 #     define    _MACHINE_ARCH   earmv6hfeb
 121 #     define    MACHINE_ARCH    "earmv6hfeb"
 122 #    else
 123 #     define    _MACHINE_ARCH   earmhfeb
 124 #     define    MACHINE_ARCH    "earmhfeb"
 125 #    endif
 126 #  else
 127 #    ifdef _ARM_ARCH_7
 128 #     define    _MACHINE_ARCH   earmv7eb
 129 #     define    MACHINE_ARCH    "earmv7eb"
 130 #    elif defined(_ARM_ARCH_6)
 131 #     define    _MACHINE_ARCH   earmv6eb
 132 #     define    MACHINE_ARCH    "earmv6eb"
 133 #    elif !defined(_ARM_ARCH_5T)
 134 #     define    _MACHINE_ARCH   earmv4eb
 135 #     define    MACHINE_ARCH    "earmv4eb"
 136 #    else
 137 #     define    _MACHINE_ARCH   earmeb
 138 #     define    MACHINE_ARCH    "earmeb"
 139 #    endif
 140 #   endif
 141 #  else
 142 #   define      _MACHINE_ARCH   armeb
 143 #   define      MACHINE_ARCH    "armeb"
 144 #  endif
 145 # endif /* __ARMEB__ */
 146 #endif /* !_KERNEL */
 147
 148 #define MID_MACHINE     MID_ARM6
 149
 150 /* ARM-specific macro to align a stack pointer (downwards). */
 151 #define STACK_ALIGNBYTES        (8 - 1)
 152 #ifdef __ARM_EABI__
 153 #define ALIGNBYTES32    3
 154 #else
 155 #define ALIGNBYTES32    7
 156 #endif
 157
 158 #define DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
 159 #define DEV_BSIZE       (1 << DEV_BSHIFT)
 160 #define BLKDEV_IOSIZE   2048
 161
 162 #ifndef MAXPHYS
 163 #define MAXPHYS         65536           /* max I/O transfer size */
 164 #endif
 165
 166 /*
 167  * Constants related to network buffer management.
 168  * MCLBYTES must be no larger than NBPG (the software page size), and,
 169  * on machines that exchange pages of input or output buffers with mbuf
 170  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
 171  * of the hardware page size.
 172  */
 173 #define MSIZE           256             /* size of an mbuf */
 174
 175 #ifndef MCLSHIFT
 176 #define MCLSHIFT        11              /* convert bytes to m_buf clusters */
 177                                         /* 2K cluster can hold Ether frame */
 178 #endif  /* MCLSHIFT */
 179
 180 #define MCLBYTES        (1 << MCLSHIFT) /* size of a m_buf cluster */
 181
 182 #ifndef NMBCLUSTERS_MAX
 183 #define NMBCLUSTERS_MAX (0x2000000 / MCLBYTES)  /* Limit to 64MB for clusters */
 184 #endif
 185
 186 /*
 187  * Compatibility /dev/zero mapping.
 188  */
 189 #ifdef _KERNEL
 190 #ifdef COMPAT_16
 191 #define COMPAT_ZERODEV(x)       (x == makedev(0, _DEV_ZERO_oARM))
 192 #endif
 193 #endif /* _KERNEL */
 194
 195 #if defined(__minix)
 196 /* LSC: FIXME This is a hack. Good enough for now, as we only have ARMv7 targets. */
 197 #include <arm/arm32/param.h>
 198 #endif /* defined(__minix) */
 199 #endif /* _ARM_PARAM_H_ */