Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) # SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) config ROMFS_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 	tristate "ROM file system support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 	depends on BLOCK || MTD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 	  This is a very small read-only file system mainly intended for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 	  initial ram disks of installation disks, but it could be used for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	  other read-only media as well.  Read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	  <file:Documentation/filesystems/romfs.rst> for details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	  To compile this file system support as a module, choose M here: the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	  module will be called romfs.  Note that the file system of your
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	  root partition (the one containing the directory /) cannot be a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	  module.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	  If you don't know whether you need it, then you don't need it:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	  answer N.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) # Select the backing stores to be supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) choice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	prompt "RomFS backing stores"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	depends on ROMFS_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	default ROMFS_BACKED_BY_BLOCK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	  Select the backing stores to be supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) config ROMFS_BACKED_BY_BLOCK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	bool "Block device-backed ROM file system support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	depends on BLOCK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	  This permits ROMFS to use block devices buffered through the page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	  cache as the medium from which to retrieve data.  It does not allow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	  direct mapping of the medium.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	  If unsure, answer Y.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) config ROMFS_BACKED_BY_MTD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	bool "MTD-backed ROM file system support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	depends on MTD=y || (ROMFS_FS=m && MTD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	  This permits ROMFS to use MTD based devices directly, without the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	  intercession of the block layer (which may have been disabled).  It
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	  also allows direct mapping of MTD devices through romfs files under
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	  NOMMU conditions if the underlying device is directly addressable by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	  the CPU.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	  If unsure, answer Y.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) config ROMFS_BACKED_BY_BOTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	bool "Both the above"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	depends on BLOCK && (MTD=y || (ROMFS_FS=m && MTD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) endchoice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) config ROMFS_ON_BLOCK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	default y if ROMFS_BACKED_BY_BLOCK || ROMFS_BACKED_BY_BOTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) config ROMFS_ON_MTD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	default y if ROMFS_BACKED_BY_MTD || ROMFS_BACKED_BY_BOTH