2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 Gabor Juhos <juhosg@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation.
11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/slab.h>
17 #include <linux/magic.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/partitions.h>
20 #include <linux/byteorder/generic.h>
25 mtdsplit_parse_squashfs(struct mtd_info
*master
,
26 struct mtd_partition
**pparts
,
27 struct mtd_part_parser_data
*data
)
29 struct mtd_partition
*part
;
30 struct mtd_info
*parent_mtd
;
35 err
= mtd_get_squashfs_len(master
, 0, &squashfs_len
);
39 parent_mtd
= mtdpart_get_master(master
);
40 part_offset
= mtdpart_get_offset(master
);
42 part
= kzalloc(sizeof(*part
), GFP_KERNEL
);
44 pr_alert("unable to allocate memory for \"%s\" partition\n",
49 part
->name
= ROOTFS_SPLIT_NAME
;
50 part
->offset
= mtd_roundup_to_eb(part_offset
+ squashfs_len
,
51 parent_mtd
) - part_offset
;
52 part
->size
= master
->size
- part
->offset
;
58 static struct mtd_part_parser mtdsplit_squashfs_parser
= {
60 .name
= "squashfs-split",
61 .parse_fn
= mtdsplit_parse_squashfs
,
62 .type
= MTD_PARSER_TYPE_ROOTFS
,
65 static int __init
mtdsplit_squashfs_init(void)
67 register_mtd_parser(&mtdsplit_squashfs_parser
);
72 subsys_initcall(mtdsplit_squashfs_init
);