block/partitions/atari.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  fs/partitions/atari.h
   4  *  Moved by Russell King from:
   5  *
   6  * linux/include/linux/atari_rootsec.h
   7  * definitions for Atari Rootsector layout
   8  * by Andreas Schwab (schwab@ls5.informatik.uni-dortmund.de)
   9  *
  10  * modified for ICD/Supra partitioning scheme restricted to at most 12
  11  * partitions
  12  * by Guenther Kelleter (guenther@pool.informatik.rwth-aachen.de)
  13  */
  14
  15 #include <linux/compiler.h>
  16
  17 struct partition_info
  18 {
  19   u8 flg;                       /* bit 0: active; bit 7: bootable */
  20   char id[3];                   /* "GEM", "BGM", "XGM", or other */
  21   __be32 st;                    /* start of partition */
  22   __be32 siz;                   /* length of partition */
  23 };
  24
  25 struct rootsector
  26 {
  27   char unused[0x156];           /* room for boot code */
  28   struct partition_info icdpart[8];     /* info for ICD-partitions 5..12 */
  29   char unused2[0xc];
  30   u32 hd_siz;                   /* size of disk in blocks */
  31   struct partition_info part[4];
  32   u32 bsl_st;                   /* start of bad sector list */
  33   u32 bsl_cnt;                  /* length of bad sector list */
  34   u16 checksum;                 /* checksum for bootable disks */
  35 } __packed;
  36
  37 int atari_partition(struct parsed_partitions *state);