arch/cris/include/asm/axisflashmap.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_AXISFLASHMAP_H
   3 #define __ASM_AXISFLASHMAP_H
   4
   5 /* Bootblock parameters are stored at 0xc000 and has the FLASH_BOOT_MAGIC
   6  * as start, it ends with 0xFFFFFFFF */
   7 #define FLASH_BOOT_MAGIC 0xbeefcace
   8 #define BOOTPARAM_OFFSET 0xc000
   9 /* apps/bootblocktool is used to read and write the parameters,
  10  * and it has nothing to do with the partition table.
  11  */
  12
  13 #define PARTITION_TABLE_OFFSET 10
  14 #define PARTITION_TABLE_MAGIC 0xbeef    /* Not a good magic */
  15
  16 /* The partitiontable_head is located at offset +10: */
  17 struct partitiontable_head {
  18         __u16 magic;    /* PARTITION_TABLE_MAGIC */
  19         __u16 size;     /* Length of ptable block (entries + end marker) */
  20         __u32 checksum; /* simple longword sum, over entries + end marker  */
  21 };
  22
  23 /* And followed by partition table entries */
  24 struct partitiontable_entry {
  25         __u32 offset;           /* relative to the sector the ptable is in */
  26         __u32 size;             /* in bytes */
  27         __u32 checksum;         /* simple longword sum */
  28         __u16 type;             /* see type codes below */
  29         __u16 flags;            /* bit 0: ro/rw = 1/0 */
  30         __u32 future0;          /* 16 bytes reserved for future use */
  31         __u32 future1;
  32         __u32 future2;
  33         __u32 future3;
  34 };
  35 /* ended by an end marker: */
  36 #define PARTITIONTABLE_END_MARKER 0xFFFFFFFF
  37 #define PARTITIONTABLE_END_MARKER_SIZE 4
  38
  39 #define PARTITIONTABLE_END_PAD  10
  40
  41 /* Complete structure for whole partition table */
  42 /* note that table may end before CONFIG_ETRAX_PTABLE_ENTRIES by setting
  43  * offset of the last entry + 1 to PARTITIONTABLE_END_MARKER.
  44  */
  45 struct partitiontable {
  46         __u8 skip[PARTITION_TABLE_OFFSET];
  47         struct partitiontable_head head;
  48         struct partitiontable_entry entries[];
  49 };
  50
  51 #define PARTITION_TYPE_PARAM  0x0001
  52 #define PARTITION_TYPE_KERNEL 0x0002
  53 #define PARTITION_TYPE_JFFS   0x0003
  54 #define PARTITION_TYPE_JFFS2  0x0000
  55
  56 #define PARTITION_FLAGS_READONLY_MASK   0x0001
  57 #define PARTITION_FLAGS_READONLY        0x0001
  58
  59 /* The master mtd for the entire flash. */
  60 extern struct mtd_info *axisflash_mtd;
  61
  62 #endif