mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-30 13:38:40 +00:00
0c2efc4848
- Add partition table struct to be used to parse partition table in flash. - Add JFFS2 as a type, and add readoly flag. - Improve some comments. - Lindent has been run, fixing whitespace and formatting issues.
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
#ifndef __ASM_AXISFLASHMAP_H
|
|
#define __ASM_AXISFLASHMAP_H
|
|
|
|
/* Bootblock parameters are stored at 0xc000 and has the FLASH_BOOT_MAGIC
|
|
* as start, it ends with 0xFFFFFFFF */
|
|
#define FLASH_BOOT_MAGIC 0xbeefcace
|
|
#define BOOTPARAM_OFFSET 0xc000
|
|
/* apps/bootblocktool is used to read and write the parameters,
|
|
* and it has nothing to do with the partition table.
|
|
*/
|
|
|
|
#define PARTITION_TABLE_OFFSET 10
|
|
#define PARTITION_TABLE_MAGIC 0xbeef /* Not a good magic */
|
|
|
|
/* The partitiontable_head is located at offset +10: */
|
|
struct partitiontable_head {
|
|
__u16 magic; /* PARTITION_TABLE_MAGIC */
|
|
__u16 size; /* Length of ptable block (entries + end marker) */
|
|
__u32 checksum; /* simple longword sum, over entries + end marker */
|
|
};
|
|
|
|
/* And followed by partition table entries */
|
|
struct partitiontable_entry {
|
|
__u32 offset; /* relative to the sector the ptable is in */
|
|
__u32 size; /* in bytes */
|
|
__u32 checksum; /* simple longword sum */
|
|
__u16 type; /* see type codes below */
|
|
__u16 flags; /* bit 0: ro/rw = 1/0 */
|
|
__u32 future0; /* 16 bytes reserved for future use */
|
|
__u32 future1;
|
|
__u32 future2;
|
|
__u32 future3;
|
|
};
|
|
/* ended by an end marker: */
|
|
#define PARTITIONTABLE_END_MARKER 0xFFFFFFFF
|
|
#define PARTITIONTABLE_END_MARKER_SIZE 4
|
|
|
|
#define PARTITIONTABLE_END_PAD 10
|
|
|
|
/* Complete structure for whole partition table */
|
|
/* note that table may end before CONFIG_ETRAX_PTABLE_ENTRIES by setting
|
|
* offset of the last entry + 1 to PARTITIONTABLE_END_MARKER.
|
|
*/
|
|
struct partitiontable {
|
|
__u8 skip[PARTITION_TABLE_OFFSET];
|
|
struct partitiontable_head head;
|
|
struct partitiontable_entry entries[];
|
|
};
|
|
|
|
#define PARTITION_TYPE_PARAM 0x0001
|
|
#define PARTITION_TYPE_KERNEL 0x0002
|
|
#define PARTITION_TYPE_JFFS 0x0003
|
|
#define PARTITION_TYPE_JFFS2 0x0000
|
|
|
|
#define PARTITION_FLAGS_READONLY_MASK 0x0001
|
|
#define PARTITION_FLAGS_READONLY 0x0001
|
|
|
|
/* The master mtd for the entire flash. */
|
|
extern struct mtd_info *axisflash_mtd;
|
|
|
|
#endif
|