| # SPDX-License-Identifier: GPL-2.0-only |
| config XZ_DEC |
| tristate "XZ decompression support" |
| select CRC32 |
| help |
| LZMA2 compression algorithm and BCJ filters are supported using |
| the .xz file format as the container. For integrity checking, |
| CRC32 is supported. See Documentation/staging/xz.rst for more information. |
| |
| if XZ_DEC |
| |
| config XZ_DEC_X86 |
| bool "x86 BCJ filter decoder" if EXPERT |
| default y |
| select XZ_DEC_BCJ |
| |
| config XZ_DEC_POWERPC |
| bool "PowerPC BCJ filter decoder" if EXPERT |
| default y |
| select XZ_DEC_BCJ |
| |
| config XZ_DEC_ARM |
| bool "ARM BCJ filter decoder" if EXPERT |
| default y |
| select XZ_DEC_BCJ |
| |
| config XZ_DEC_ARMTHUMB |
| bool "ARM-Thumb BCJ filter decoder" if EXPERT |
| default y |
| select XZ_DEC_BCJ |
| |
| config XZ_DEC_SPARC |
| bool "SPARC BCJ filter decoder" if EXPERT |
| default y |
| select XZ_DEC_BCJ |
| |
| config XZ_DEC_MICROLZMA |
| bool "MicroLZMA decoder" |
| default n |
| help |
| MicroLZMA is a header format variant where the first byte |
| of a raw LZMA stream (without the end of stream marker) has |
| been replaced with a bitwise-negation of the lc/lp/pb |
| properties byte. MicroLZMA was created to be used in EROFS |
| but can be used by other things too where wasting minimal |
| amount of space for headers is important. |
| |
| Unless you know that you need this, say N. |
| |
| endif |
| |
| config XZ_DEC_BCJ |
| bool |
| default n |
| |
| config XZ_DEC_TEST |
| tristate "XZ decompressor tester" |
| default n |
| depends on XZ_DEC |
| help |
| This allows passing .xz files to the in-kernel XZ decoder via |
| a character special file. It calculates CRC32 of the decompressed |
| data and writes diagnostics to the system log. |
| |
| Unless you are developing the XZ decoder, you don't need this |
| and should say N. |
