freeldr/freeldr/linux.c

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1999, 2000  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20
  21 #include "freeldr.h"
  22 #include "asmcode.h"
  23 #include "miscboot.h"
  24 #include "stdlib.h"
  25 #include "fs.h"
  26 #include "tui.h"
  27 #include "linux.h"
  28
  29 void LoadAndBootLinux(int DriveNum, int Partition, char *vmlinuz, char *cmd_line)
  30 {
  31         /*FILE  file;
  32         char    temp[260];
  33         char    bootsector[512];
  34         char    setup[2048];
  35         int             len;
  36
  37         BootDrive = DriveNum;
  38         BootPartition = Partition;
  39
  40         if (!OpenDiskDrive(BootDrive, BootPartition))
  41         {
  42                 MessageBox("Failed to open boot drive.");
  43                 return;
  44         }
  45
  46         if (!OpenFile(vmlinuz, &file))
  47         {
  48                 strcpy(temp, vmlinuz);
  49                 strcat(temp, " not found.");
  50                 MessageBox(temp);
  51                 return;
  52         }
  53
  54         // Read boot sector
  55         if (ReadFile(&file, 512, bootsector) != 512)
  56         {
  57                 MessageBox("Disk Read Error");
  58                 return;
  59         }
  60         MessageBox("bootsector loaded");
  61
  62         // Read setup code
  63         if (ReadFile(&file, 2048, setup) != 2048)
  64         {
  65                 MessageBox("Disk Read Error");
  66                 return;
  67         }
  68         MessageBox("setup loaded");
  69
  70         // Read kernel code
  71         len = GetFileSize(&file) - (2048 + 512);
  72         //len = 0x200;
  73         if (ReadFile(&file, len, (void*)0x100000) != len)
  74         {
  75                 MessageBox("Disk Read Error");
  76                 return;
  77         }
  78         MessageBox("kernel loaded");
  79
  80         // Check for validity
  81         if (*((WORD*)(bootsector + 0x1fe)) != 0xaa55)
  82         {
  83                 MessageBox("Invalid boot sector magic (0xaa55)");
  84                 return;
  85         }
  86         if (*((DWORD*)(setup + 2)) != 0x53726448)
  87         {
  88                 MessageBox("Invalid setup magic (\"HdrS\")");
  89                 return;
  90         }
  91
  92         memcpy((void*)0x90000, bootsector, 512);
  93         memcpy((void*)0x90200, setup, 2048);
  94
  95         RestoreScreen(ScreenBuffer);
  96         showcursor();
  97         gotoxy(CursorXPos, CursorYPos);
  98
  99         stop_floppy();
 100         JumpToLinuxBootCode();*/
 101 }