Linux kernel mirror (for testing)
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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: */
17struct 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 */
24struct 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 */
45struct 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. */
60extern struct mtd_info *axisflash_mtd;
61
62#endif