arch/common/boot/grub/lib/device.h

   1 /* device.h - Define macros and declare prototypes for device.c */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 1999,2000,2004  Free Software Foundation, Inc.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #ifndef DEVICE_MAP_HEADER
  22 #define DEVICE_MAP_HEADER       1
  23
  24 /* The maximum number of BIOS disks.  */
  25 #define NUM_DISKS       256
  26
  27 /* Simulated disk sizes. */
  28 #define DEFAULT_FD_CYLINDERS    80
  29 #define DEFAULT_FD_HEADS        2
  30 #define DEFAULT_FD_SECTORS      18
  31 #define DEFAULT_HD_CYLINDERS    620
  32 #define DEFAULT_HD_HEADS        128
  33 #define DEFAULT_HD_SECTORS      63
  34
  35 /* Function prototypes.  */
  36 extern void get_drive_geometry (struct geometry *geom, char **map, int drive);
  37 extern int check_device (const char *device);
  38 extern int init_device_map (char ***map, const char *map_file,
  39                             int no_floppies);
  40 extern void restore_device_map (char **map);
  41
  42 #ifdef __linux__
  43 extern int is_disk_device (char **map, int drive);
  44 extern int write_to_partition (char **map, int drive, int partition,
  45                                int offset, int size, const char *buf);
  46 #endif /* __linux__ */
  47
  48 #endif /* DEVICE_MAP_HEADER */