1config ROMFS_FS
2	tristate "ROM file system support"
3	depends on BLOCK || MTD
4	---help---
5	  This is a very small read-only file system mainly intended for
6	  initial ram disks of installation disks, but it could be used for
7	  other read-only media as well.  Read
8	  <file:Documentation/filesystems/romfs.txt> for details.
9
10	  To compile this file system support as a module, choose M here: the
11	  module will be called romfs.  Note that the file system of your
12	  root partition (the one containing the directory /) cannot be a
13	  module.
14
15	  If you don't know whether you need it, then you don't need it:
16	  answer N.
17
18#
19# Select the backing stores to be supported
20#
21choice
22	prompt "RomFS backing stores"
23	depends on ROMFS_FS
24	default ROMFS_BACKED_BY_BLOCK
25	help
26	  Select the backing stores to be supported.
27
28config ROMFS_BACKED_BY_BLOCK
29	bool "Block device-backed ROM file system support"
30	depends on BLOCK
31	help
32	  This permits ROMFS to use block devices buffered through the page
33	  cache as the medium from which to retrieve data.  It does not allow
34	  direct mapping of the medium.
35
36	  If unsure, answer Y.
37
38config ROMFS_BACKED_BY_MTD
39	bool "MTD-backed ROM file system support"
40	depends on MTD=y || (ROMFS_FS=m && MTD)
41	help
42	  This permits ROMFS to use MTD based devices directly, without the
43	  intercession of the block layer (which may have been disabled).  It
44	  also allows direct mapping of MTD devices through romfs files under
45	  NOMMU conditions if the underlying device is directly addressable by
46	  the CPU.
47
48	  If unsure, answer Y.
49
50config ROMFS_BACKED_BY_BOTH
51	bool "Both the above"
52	depends on BLOCK && (MTD=y || (ROMFS_FS=m && MTD))
53endchoice
54
55
56config ROMFS_ON_BLOCK
57	bool
58	default y if ROMFS_BACKED_BY_BLOCK || ROMFS_BACKED_BY_BOTH
59
60config ROMFS_ON_MTD
61	bool
62	default y if ROMFS_BACKED_BY_MTD || ROMFS_BACKED_BY_BOTH
63