#
  # Configuration for initramfs
  #
  
  config INITRAMFS_SOURCE
  	string "Initramfs source file(s)"
  	default ""
  	help
  	  This can be either a single cpio archive with a .cpio suffix or a
  	  space-separated list of directories and files for building the
  	  initramfs image.  A cpio archive should contain a filesystem archive
  	  to be used as an initramfs image.  Directories should contain a
  	  filesystem layout to be included in the initramfs image.  Files
  	  should contain entries according to the format described by the
  	  "usr/gen_init_cpio" program in the kernel tree.
  
  	  When multiple directories and files are specified then the
  	  initramfs image will be the aggregate of all of them.

  	  See <file:Documentation/early-userspace/README> for more details.

  
  	  If you are not sure, leave it blank.
  
  config INITRAMFS_ROOT_UID
  	int "User ID to map to 0 (user root)"
  	depends on INITRAMFS_SOURCE!=""
  	default "0"
  	help
  	  This setting is only meaningful if the INITRAMFS_SOURCE is
  	  contains a directory.  Setting this user ID (UID) to something
  	  other than "0" will cause all files owned by that UID to be
  	  owned by user root in the initial ramdisk image.
  
  	  If you are not sure, leave it set to "0".
  
  config INITRAMFS_ROOT_GID
  	int "Group ID to map to 0 (group root)"
  	depends on INITRAMFS_SOURCE!=""
  	default "0"
  	help
  	  This setting is only meaningful if the INITRAMFS_SOURCE is
  	  contains a directory.  Setting this group ID (GID) to something
  	  other than "0" will cause all files owned by that GID to be
  	  owned by group root in the initial ramdisk image.
  
  	  If you are not sure, leave it set to "0".

  
  config RD_GZIP

  	bool "Support initial ramdisks compressed using gzip" if EXPERT

  	default y

  	depends on BLK_DEV_INITRD

  	select DECOMPRESS_GZIP
  	help
  	  Support loading of a gzip encoded initial ramdisk or cpio buffer.
  	  If unsure, say Y.
  
  config RD_BZIP2

  	bool "Support initial ramdisks compressed using bzip2" if EXPERT
  	default !EXPERT

  	depends on BLK_DEV_INITRD

  	select DECOMPRESS_BZIP2
  	help
  	  Support loading of a bzip2 encoded initial ramdisk or cpio buffer
  	  If unsure, say N.
  
  config RD_LZMA

  	bool "Support initial ramdisks compressed using LZMA" if EXPERT
  	default !EXPERT

  	depends on BLK_DEV_INITRD

  	select DECOMPRESS_LZMA
  	help

  	  Support loading of a LZMA encoded initial ramdisk or cpio buffer

  	  If unsure, say N.

  config RD_XZ

  	bool "Support initial ramdisks compressed using XZ" if EXPERT
  	default !EXPERT

  	depends on BLK_DEV_INITRD
  	select DECOMPRESS_XZ
  	help
  	  Support loading of a XZ encoded initial ramdisk or cpio buffer.
  	  If unsure, say N.

  config RD_LZO

  	bool "Support initial ramdisks compressed using LZO" if EXPERT
  	default !EXPERT

  	depends on BLK_DEV_INITRD
  	select DECOMPRESS_LZO
  	help
  	  Support loading of a LZO encoded initial ramdisk or cpio buffer
  	  If unsure, say N.

  choice

  	prompt "Built-in initramfs compression mode" if INITRAMFS_SOURCE!=""

  	help

  	  This option decides by which algorithm the builtin initramfs
  	  will be compressed.  Several compression algorithms are
  	  available, which differ in efficiency, compression and
  	  decompression speed.  Compression speed is only relevant
  	  when building a kernel.  Decompression speed is relevant at
  	  each boot.

  	  If you have any problems with bzip2 or LZMA compressed

  	  initramfs, mail me (Alain Knaff) <alain@knaff.lu>.

  	  High compression options are mostly useful for users who are
  	  low on RAM, since it reduces the memory consumption during
  	  boot.

  
  	  If in doubt, select 'gzip'
  
  config INITRAMFS_COMPRESSION_NONE
  	bool "None"
  	help
  	  Do not compress the built-in initramfs at all. This may
  	  sound wasteful in space, but, you should be aware that the
  	  built-in initramfs will be compressed at a later stage
  	  anyways along with the rest of the kernel, on those
  	  architectures that support this.
  	  However, not compressing the initramfs may lead to slightly
  	  higher memory consumption during a short time at boot, while
  	  both the cpio image and the unpacked filesystem image will
  	  be present in memory simultaneously
  
  config INITRAMFS_COMPRESSION_GZIP
  	bool "Gzip"
  	depends on RD_GZIP
  	help

  	  The old and tried gzip compression. It provides a good balance
  	  between compression ratio and decompression speed.

  
  config INITRAMFS_COMPRESSION_BZIP2
  	bool "Bzip2"
  	depends on RD_BZIP2
  	help
  	  Its compression ratio and speed is intermediate.

  	  Decompression speed is slowest among the four.  The initramfs

  	  size is about 10% smaller with bzip2, in comparison to gzip.
  	  Bzip2 uses a large amount of memory. For modern kernels you
  	  will need at least 8MB RAM or more for booting.
  
  config INITRAMFS_COMPRESSION_LZMA
  	bool "LZMA"
  	depends on RD_LZMA
  	help
  	  The most recent compression algorithm.
  	  Its ratio is best, decompression speed is between the other

  	  three. Compression is slowest. The initramfs size is about 33%

  	  smaller with LZMA in comparison to gzip.

  config INITRAMFS_COMPRESSION_XZ
  	bool "XZ"
  	depends on RD_XZ
  	help
  	  XZ uses the LZMA2 algorithm. The initramfs size is about 30%
  	  smaller with XZ in comparison to gzip. Decompression speed
  	  is better than that of bzip2 but worse than gzip and LZO.
  	  Compression is slow.

  config INITRAMFS_COMPRESSION_LZO
  	bool "LZO"
  	depends on RD_LZO
  	help
  	  Its compression ratio is the poorest among the four. The kernel

  	  size is about 10% bigger than gzip; however its speed

  	  (both compression and decompression) is the fastest.

  endchoice