VisionFive2 Linux kernel

ec8f24b7faaf3 (Thomas Gleixner       2019-05-19 13:07:45 +0100  1) # SPDX-License-Identifier: GPL-2.0-only
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300  2) config ROMFS_FS
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300  3) 	tristate "ROM file system support"
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000  4) 	depends on BLOCK || MTD
a7f7f6248d974 (Masahiro Yamada       2020-06-14 01:50:22 +0900  5) 	help
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300  6) 	  This is a very small read-only file system mainly intended for
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300  7) 	  initial ram disks of installation disks, but it could be used for
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300  8) 	  other read-only media as well.  Read
0c1bc6b84525b (Mauro Carvalho Chehab 2020-04-14 18:48:37 +0200  9) 	  <file:Documentation/filesystems/romfs.rst> for details.
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 10) 
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 11) 	  To compile this file system support as a module, choose M here: the
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 12) 	  module will be called romfs.  Note that the file system of your
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 13) 	  root partition (the one containing the directory /) cannot be a
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 14) 	  module.
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 15) 
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 16) 	  If you don't know whether you need it, then you don't need it:
41810246df2e6 (Alexey Dobriyan       2009-01-22 11:03:34 +0300 17) 	  answer N.
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 18) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 19) #
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 20) # Select the backing stores to be supported
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 21) #
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 22) choice
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 23) 	prompt "RomFS backing stores"
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 24) 	depends on ROMFS_FS
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 25) 	default ROMFS_BACKED_BY_BLOCK
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 26) 	help
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 27) 	  Select the backing stores to be supported.
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 28) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 29) config ROMFS_BACKED_BY_BLOCK
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 30) 	bool "Block device-backed ROM file system support"
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 31) 	depends on BLOCK
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 32) 	help
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 33) 	  This permits ROMFS to use block devices buffered through the page
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 34) 	  cache as the medium from which to retrieve data.  It does not allow
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 35) 	  direct mapping of the medium.
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 36) 
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 37) 	  If unsure, answer Y.
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 38) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 39) config ROMFS_BACKED_BY_MTD
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 40) 	bool "MTD-backed ROM file system support"
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 41) 	depends on MTD=y || (ROMFS_FS=m && MTD)
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 42) 	help
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 43) 	  This permits ROMFS to use MTD based devices directly, without the
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 44) 	  intercession of the block layer (which may have been disabled).  It
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 45) 	  also allows direct mapping of MTD devices through romfs files under
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 46) 	  NOMMU conditions if the underlying device is directly addressable by
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 47) 	  the CPU.
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 48) 
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 49) 	  If unsure, answer Y.
da4458bda237a (David Howells         2009-02-12 10:40:10 +0000 50) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 51) config ROMFS_BACKED_BY_BOTH
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 52) 	bool "Both the above"
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 53) 	depends on BLOCK && (MTD=y || (ROMFS_FS=m && MTD))
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 54) endchoice
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 55) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 56) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 57) config ROMFS_ON_BLOCK
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 58) 	bool
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 59) 	default y if ROMFS_BACKED_BY_BLOCK || ROMFS_BACKED_BY_BOTH
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 60) 
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 61) config ROMFS_ON_MTD
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 62) 	bool
f52fd5b7fd11e (David Howells         2009-02-20 12:31:54 +0000 63) 	default y if ROMFS_BACKED_BY_MTD || ROMFS_BACKED_BY_BOTH