diff options
Diffstat (limited to 'usr/Kconfig')
| -rw-r--r-- | usr/Kconfig | 96 |
1 files changed, 23 insertions, 73 deletions
diff --git a/usr/Kconfig b/usr/Kconfig index c2c7fe2f717..2d4c77eecf2 100644 --- a/usr/Kconfig +++ b/usr/Kconfig @@ -46,7 +46,7 @@ config INITRAMFS_ROOT_GID If you are not sure, leave it set to "0". config RD_GZIP - bool "Support initial ramdisks compressed using gzip" if EMBEDDED + bool "Support initial ramdisks compressed using gzip" if EXPERT default y depends on BLK_DEV_INITRD select DECOMPRESS_GZIP @@ -55,8 +55,8 @@ config RD_GZIP If unsure, say Y. config RD_BZIP2 - bool "Support initial ramdisks compressed using bzip2" if EMBEDDED - default !EMBEDDED + bool "Support initial ramdisks compressed using bzip2" if EXPERT + default !EXPERT depends on BLK_DEV_INITRD select DECOMPRESS_BZIP2 help @@ -64,87 +64,37 @@ config RD_BZIP2 If unsure, say N. config RD_LZMA - bool "Support initial ramdisks compressed using LZMA" if EMBEDDED - default !EMBEDDED + 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 EMBEDDED - default !EMBEDDED + 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_LZO - bool "LZO" - depends on RD_LZO +config RD_LZ4 + bool "Support initial ramdisks compressed using LZ4" if EXPERT + default !EXPERT + depends on BLK_DEV_INITRD + select DECOMPRESS_LZ4 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 + Support loading of a LZ4 encoded initial ramdisk or cpio buffer + If unsure, say N. |