i386/boot1/gonext.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 #include <bios.h>
  26 #include <dos.h>
  27 #include <stdio.h>
  28
  29 char bufold[512];
  30
  31 int main(int argc, char *argv[])
  32 {
  33         void far (*reset)();
  34         #define CMD 2
  35         #define DRIVE 0x80
  36         #define HEAD 0
  37         #define TRACK 0
  38         #define SECT 1
  39         #define NSECT 1
  40         int result, i;
  41         int found;
  42         unsigned char *p1, *p2, key;
  43         int softReboot=0;
  44         int dontAsk=0;
  45
  46         for (i=1; i<argc; i++)
  47         {
  48                 if (!strcmp(argv[i],"-dontask")) dontAsk=1;
  49                 else if (!strcmp(argv[i],"-soft")) softReboot=1;
  50         }
  51
  52         if (!dontAsk)
  53         {
  54                 printf("Do you want to reboot into NEXTSTEP?\n");
  55                 printf("    (This will immediately terminate all processes!)\n");
  56                 key = bioskey(0);
  57                 if (!(key=='y' || key=='Y'))
  58                 {
  59                         printf("Cancelled\n");
  60                         exit(0);
  61                 }
  62         }
  63
  64         result = biosdisk(CMD,DRIVE,HEAD,TRACK,SECT,NSECT,bufold);
  65         if (result != 0)
  66         {       printf("Couldn't read bootsectorread\n");
  67                 exit(0);
  68         }
  69
  70         p1 = bufold + 445;
  71
  72         if (*p1 != 0xa7)
  73         {
  74                 printf("GONEXT can only work if NeXT's BOOT0 bootsector"
  75                         " is installed.\n");
  76                 exit(0);
  77         }
  78
  79         found = 0;
  80         p1=bufold + 446;
  81         for (i=0; i<4; i++)
  82         {       p2 = p1 + (i*16) + 4;
  83                 if (*p2 == 0xa7)
  84                 {       found=1;
  85                         break;
  86                 }
  87         }
  88
  89         if (!found)
  90         {       printf("No NEXTSTEP partition installed\n");
  91                 exit(0);
  92         }
  93
  94         /* now do the proper CMOS write! */
  95
  96
  97         outportb(0x70,6);       /* select */
  98         key = inportb(0x71);
  99         key |= 0x10;
 100         outportb(0x70,6);       /* select */
 101         outportb(0x71,key);
 102
 103         if (softReboot) geninterrupt(0x19);
 104         else
 105         {
 106                 printf("'Scuse me while I kiss the sky!\n");
 107                 reset = MK_FP(0xf000,0xfff0);
 108                 reset();
 109                 geninterrupt(0x19);     /* try again - shouldn't get here */
 110         }
 111
 112         printf("Reboot failed\n");
 113         return -1;      /* you never get here */
 114 }