part_dos.h 1.9 KB

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  1. /*
  2. * (C) Copyright 2000
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #ifndef _DISK_PART_DOS_H
  24. #define _DISK_PART_DOS_H
  25. #ifdef CONFIG_ISO_PARTITION
  26. /* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
  27. have 2048 byte blocks */
  28. #define DEFAULT_SECTOR_SIZE 2048
  29. #else
  30. #define DEFAULT_SECTOR_SIZE 512
  31. #endif
  32. #define DOS_PART_TBL_OFFSET 0x1be
  33. #define DOS_PART_MAGIC_OFFSET 0x1fe
  34. #define DOS_PBR_FSTYPE_OFFSET 0x36
  35. #define DOS_PBR32_FSTYPE_OFFSET 0x52
  36. #define DOS_PBR_MEDIA_TYPE_OFFSET 0x15
  37. #define DOS_MBR 0
  38. #define DOS_PBR 1
  39. typedef struct dos_partition {
  40. unsigned char boot_ind; /* 0x80 - active */
  41. unsigned char head; /* starting head */
  42. unsigned char sector; /* starting sector */
  43. unsigned char cyl; /* starting cylinder */
  44. unsigned char sys_ind; /* What partition type */
  45. unsigned char end_head; /* end head */
  46. unsigned char end_sector; /* end sector */
  47. unsigned char end_cyl; /* end cylinder */
  48. unsigned char start4[4]; /* starting sector counting from 0 */
  49. unsigned char size4[4]; /* nr of sectors in partition */
  50. } dos_partition_t;
  51. #endif /* _DISK_PART_DOS_H */