i386/boot1/gonext.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 #include <bios.h>
  25 #include <dos.h>
  26 #include <stdio.h>
  27
  28 char bufold[512];
  29
  30 int main(int argc, char *argv[])
  31 {
  32         void far (*reset)();
  33         #define CMD 2
  34         #define DRIVE 0x80
  35         #define HEAD 0
  36         #define TRACK 0
  37         #define SECT 1
  38         #define NSECT 1
  39         int result, i;
  40         int found;
  41         unsigned char *p1, *p2, key;
  42         int softReboot=0;
  43         int dontAsk=0;
  44
  45         for (i=1; i<argc; i++)
  46         {
  47                 if (!strcmp(argv[i],"-dontask")) dontAsk=1;
  48                 else if (!strcmp(argv[i],"-soft")) softReboot=1;
  49         }
  50
  51         if (!dontAsk)
  52         {
  53                 printf("Do you want to reboot into NEXTSTEP?\n");
  54                 printf("    (This will immediately terminate all processes!)\n");
  55                 key = bioskey(0);
  56                 if (!(key=='y' || key=='Y'))
  57                 {
  58                         printf("Cancelled\n");
  59                         exit(0);
  60                 }
  61         }
  62
  63         result = biosdisk(CMD,DRIVE,HEAD,TRACK,SECT,NSECT,bufold);
  64         if (result != 0)
  65         {       printf("Couldn't read bootsectorread\n");
  66                 exit(0);
  67         }
  68
  69         p1 = bufold + 445;
  70
  71         if (*p1 != 0xa7)
  72         {
  73                 printf("GONEXT can only work if NeXT's BOOT0 bootsector"
  74                         " is installed.\n");
  75                 exit(0);
  76         }
  77
  78         found = 0;
  79         p1=bufold + 446;
  80         for (i=0; i<4; i++)
  81         {       p2 = p1 + (i*16) + 4;
  82                 if (*p2 == 0xa7)
  83                 {       found=1;
  84                         break;
  85                 }
  86         }
  87
  88         if (!found)
  89         {       printf("No NEXTSTEP partition installed\n");
  90                 exit(0);
  91         }
  92
  93         /* now do the proper CMOS write! */
  94
  95
  96         outportb(0x70,6);       /* select */
  97         key = inportb(0x71);
  98         key |= 0x10;
  99         outportb(0x70,6);       /* select */
 100         outportb(0x71,key);
 101
 102         if (softReboot) geninterrupt(0x19);
 103         else
 104         {
 105                 printf("'Scuse me while I kiss the sky!\n");
 106                 reset = MK_FP(0xf000,0xfff0);
 107                 reset();
 108                 geninterrupt(0x19);     /* try again - shouldn't get here */
 109         }
 110
 111         printf("Reboot failed\n");
 112         return -1;      /* you never get here */
 113 }