sys/arch/atari/stand/xxboot/xxboot.h

   1 /*      $NetBSD: xxboot.h,v 1.4 1996/12/28 23:37:53 leo Exp $   */
   2
   3 /*
   4  * Copyright (c) 1995 Waldi Ravens
   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 Waldi Ravens.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #define BIOS            13
  34 #define Bconin          0x02
  35 #define Bconout         0x03
  36 #define Kbshift         0x0b
  37 #define XBIOS           14
  38 #define Floprd          0x08
  39 #define DMAread         0x2a
  40 #define NVMaccess       0x2e
  41
  42 #define _membot         0x0432
  43 #define _memtop         0x0436
  44 #define flock           0x043e
  45 #define _bootdev        0x0446
  46 #define _v_bas_ad       0x044e
  47 #define _hz_200         0x04ba
  48 #define _drvbits        0x04c2
  49 #define _sysbase        0x04f2
  50 #define pun_ptr         0x0516
  51
  52 #define daccess         0x8604
  53 #define dmodus          0x8606
  54 #define dmahi           0x8609
  55 #define gpip            0xfa01
  56
  57 #define rtcrnr          0x8961
  58 #define rtcdat          0x8963
  59 #define BOOTPREF        15
  60
  61 #define idesdh          0xfff00019
  62 #define idedor          0xfff00005
  63 #define idedr           0xfff00000
  64 #define idecr           0xfff0001d
  65 #define idesr           0xfff0001d
  66 #define idesc           0xfff00009
  67 #define idesn           0xfff0000d
  68 #define idecl           0xfff00011
  69 #define idech           0xfff00015
  70
  71 /*
  72  * Boot block format (16 * 512 bytes)
  73  *
  74  * - first-stage loader :  512 bytes
  75  * - magic number       :    4 bytes
  76  * - disk pack label    : 1020 bytes
  77  * - second-stage loader: 6656 bytes
  78  *
  79  * The boot code in ROM loads the first-stage loader, which
  80  * in turn loads the remaining 15 sectors and executes the
  81  * second-stage loader, which runs at address LOADADDR.
  82  */
  83 #define NSEC            15
  84 #define LBLSZ           1020
  85 #define BXXSZ           6656
  86
  87 #define BXXST           (LOADADDR)
  88 #define LBLST           (BXXST-LBLSZ)
  89
  90 /*
  91  * Miminum/maximum value for the top/bottom  of the memory area
  92  * provided by the BIOS. The 1MB minimum memory limit is enough
  93  * to load a NetBSD kernel, not to run it. ;-) However, memory
  94  * reserved by the BIOS is not available to the boot loaders,
  95  * but will be claimed by the NetBSD kernel.
  96  */
  97 #define MAXBOT          (LBLST-4)
  98 #define MINTOP          (MAXBOT+0x100000)