diff options
| -rw-r--r-- | usr/Kconfig | 54 |
1 files changed, 33 insertions, 21 deletions
diff --git a/usr/Kconfig b/usr/Kconfig index 43a3a0fe8f2..588c588791e 100644 --- a/usr/Kconfig +++ b/usr/Kconfig @@ -46,49 +46,50 @@ config INITRAMFS_ROOT_GID If you are not sure, leave it set to "0". config RD_GZIP - bool "Initial ramdisk compressed using gzip" + bool "Support initial ramdisks compressed using gzip" if EMBEDDED default y - depends on BLK_DEV_INITRD=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 "Initial ramdisk compressed using bzip2" - default n - depends on BLK_DEV_INITRD=y + bool "Support initial ramdisks compressed using bzip2" if EMBEDDED + default !EMBEDDED + 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 "Initial ramdisk compressed using lzma" - default n - depends on BLK_DEV_INITRD=y + bool "Support initial ramdisks compressed using LZMA" if EMBEDDED + default !EMBEDDED + depends on BLK_DEV_INITRD select DECOMPRESS_LZMA help - Support loading of a lzma encoded initial ramdisk or cpio buffer + Support loading of a LZMA encoded initial ramdisk or cpio buffer If unsure, say N. +if INITRAMFS_SOURCE!="" + choice prompt "Built-in initramfs compression mode" help - This setting is only meaningful if the INITRAMFS_SOURCE is - set. It decides by which algorithm the INITRAMFS_SOURCE 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 + 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 disk space (embedded systems), but for whom ram - size matters less. + 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' @@ -133,3 +134,14 @@ config INITRAMFS_COMPRESSION_LZMA smaller with LZMA in comparison to gzip. endchoice + +endif + +if INITRAMFS_SOURCE="" +# The builtin initramfs is so small so we don't want to bug the user... + +config INITRAMFS_COMPRESSION_NONE + bool + default y + +endif |