1 # SPDX-License-Identifier: GPL-2.0-only
2 config CRAMFS
3 tristate "Compressed ROM file system s
4 select ZLIB_INFLATE
5 help
6 Saying Y here includes support for C
7 System). CramFs is designed to be a
8 file system for ROM based embedded s
9 limited to 256MB file systems (with
10 16/32 bits uid/gid, hard links and t
11
12 See <file:Documentation/filesystems/
13 <file:fs/cramfs/README> for further
14
15 To compile this as a module, choose
16 cramfs. Note that the root file sys
17 directory /) cannot be compiled as a
18
19 This filesystem is limited in capabi
20 purpose to remain small and low on R
21 for small embedded systems. If you h
22 consider a more capable compressed f
23 which is much better in terms of per
24
25 If unsure, say N.
26
27 config CRAMFS_BLOCKDEV
28 bool "Support CramFs image over a regu
29 depends on CRAMFS && BLOCK
30 default y
31 help
32 This option allows the CramFs driver
33 block device such a disk partition o
34
35 config CRAMFS_MTD
36 bool "Support CramFs image directly ma
37 depends on CRAMFS && CRAMFS <= MTD
38 default y if !CRAMFS_BLOCKDEV
39 help
40 This option allows the CramFs driver
41 a linear addressed memory range (usu
42 like flash) instead of going through
43 This saves some memory since no inte
44 necessary.
45
46 The location of the CramFs image is
47 MTD device capable of direct memory
48 the 'physmap' map driver or a result
49 For example, this would mount the cr
50 the MTD partition named "xip_fs" on
51
52 mount -t cramfs mtd:xip_fs /mnt
53
54 If unsure, say N.
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