target/linux/generic/files/drivers/mtd/mtdsplit.h

   1 /*
   2  * Copyright (C) 2009-2013 Felix Fietkau <nbd@openwrt.org>
   3  * Copyright (C) 2009-2013 Gabor Juhos <juhosg@openwrt.org>
   4  * Copyright (C) 2012 Jonas Gorski <jogo@openwrt.org>
   5  * Copyright (C) 2013 Hauke Mehrtens <hauke@hauke-m.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published
   9  * by the Free Software Foundation.
  10  *
  11  */
  12
  13 #ifndef _MTDSPLIT_H
  14 #define _MTDSPLIT_H
  15
  16 #define KERNEL_PART_NAME        "kernel"
  17 #define ROOTFS_PART_NAME        "rootfs"
  18
  19 #define ROOTFS_SPLIT_NAME       "rootfs_data"
  20
  21 #ifdef CONFIG_MTD_SPLIT
  22 int mtd_get_squashfs_len(struct mtd_info *master,
  23                          size_t offset,
  24                          size_t *squashfs_len);
  25
  26 int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset);
  27
  28 int mtd_find_rootfs_from(struct mtd_info *mtd,
  29                          size_t from,
  30                          size_t limit,
  31                          size_t *ret_offset);
  32
  33 #else
  34 static inline int mtd_get_squashfs_len(struct mtd_info *master,
  35                                        size_t offset,
  36                                        size_t *squashfs_len)
  37 {
  38         return -ENODEV;
  39 }
  40
  41 static inline int mtd_check_rootfs_magic(struct mtd_info *mtd, size_t offset)
  42 {
  43         return -EINVAL;
  44 }
  45
  46 static inline int mtd_find_rootfs_from(struct mtd_info *mtd,
  47                                        size_t from,
  48                                        size_t limit,
  49                                        size_t *ret_offset)
  50 {
  51         return -ENODEV;
  52 }
  53 #endif /* CONFIG_MTD_SPLIT */
  54
  55 #endif /* _MTDSPLIT_H */