arch/cris/include/asm/axisflashmap.h

   1 #ifndef __ASM_AXISFLASHMAP_H
   2 #define __ASM_AXISFLASHMAP_H
   3
   4 /* Bootblock parameters are stored at 0xc000 and has the FLASH_BOOT_MAGIC
   5  * as start, it ends with 0xFFFFFFFF */
   6 #define FLASH_BOOT_MAGIC 0xbeefcace
   7 #define BOOTPARAM_OFFSET 0xc000
   8 /* apps/bootblocktool is used to read and write the parameters,
   9  * and it has nothing to do with the partition table.
  10  */
  11
  12 #define PARTITION_TABLE_OFFSET 10
  13 #define PARTITION_TABLE_MAGIC 0xbeef    /* Not a good magic */
  14
  15 /* The partitiontable_head is located at offset +10: */
  16 struct partitiontable_head {
  17         __u16 magic;    /* PARTITION_TABLE_MAGIC */
  18         __u16 size;     /* Length of ptable block (entries + end marker) */
  19         __u32 checksum; /* simple longword sum, over entries + end marker  */
  20 };
  21
  22 /* And followed by partition table entries */
  23 struct partitiontable_entry {
  24         __u32 offset;           /* relative to the sector the ptable is in */
  25         __u32 size;             /* in bytes */
  26         __u32 checksum;         /* simple longword sum */
  27         __u16 type;             /* see type codes below */
  28         __u16 flags;            /* bit 0: ro/rw = 1/0 */
  29         __u32 future0;          /* 16 bytes reserved for future use */
  30         __u32 future1;
  31         __u32 future2;
  32         __u32 future3;
  33 };
  34 /* ended by an end marker: */
  35 #define PARTITIONTABLE_END_MARKER 0xFFFFFFFF
  36 #define PARTITIONTABLE_END_MARKER_SIZE 4
  37
  38 #define PARTITIONTABLE_END_PAD  10
  39
  40 /* Complete structure for whole partition table */
  41 /* note that table may end before CONFIG_ETRAX_PTABLE_ENTRIES by setting
  42  * offset of the last entry + 1 to PARTITIONTABLE_END_MARKER.
  43  */
  44 struct partitiontable {
  45         __u8 skip[PARTITION_TABLE_OFFSET];
  46         struct partitiontable_head head;
  47         struct partitiontable_entry entries[];
  48 };
  49
  50 #define PARTITION_TYPE_PARAM  0x0001
  51 #define PARTITION_TYPE_KERNEL 0x0002
  52 #define PARTITION_TYPE_JFFS   0x0003
  53 #define PARTITION_TYPE_JFFS2  0x0000
  54
  55 #define PARTITION_FLAGS_READONLY_MASK   0x0001
  56 #define PARTITION_FLAGS_READONLY        0x0001
  57
  58 /* The master mtd for the entire flash. */
  59 extern struct mtd_info *axisflash_mtd;
  60
  61 #endif