1config XZ_DEC 2 tristate "XZ decompression support" 3 select CRC32 4 help 5 LZMA2 compression algorithm and BCJ filters are supported using 6 the .xz file format as the container. For integrity checking, 7 CRC32 is supported. See Documentation/xz.txt for more information. 8 9config XZ_DEC_X86 10 bool "x86 BCJ filter decoder" if EMBEDDED 11 default y 12 depends on XZ_DEC 13 select XZ_DEC_BCJ 14 15config XZ_DEC_POWERPC 16 bool "PowerPC BCJ filter decoder" if EMBEDDED 17 default y 18 depends on XZ_DEC 19 select XZ_DEC_BCJ 20 21config XZ_DEC_IA64 22 bool "IA-64 BCJ filter decoder" if EMBEDDED 23 default y 24 depends on XZ_DEC 25 select XZ_DEC_BCJ 26 27config XZ_DEC_ARM 28 bool "ARM BCJ filter decoder" if EMBEDDED 29 default y 30 depends on XZ_DEC 31 select XZ_DEC_BCJ 32 33config XZ_DEC_ARMTHUMB 34 bool "ARM-Thumb BCJ filter decoder" if EMBEDDED 35 default y 36 depends on XZ_DEC 37 select XZ_DEC_BCJ 38 39config XZ_DEC_SPARC 40 bool "SPARC BCJ filter decoder" if EMBEDDED 41 default y 42 depends on XZ_DEC 43 select XZ_DEC_BCJ 44 45config XZ_DEC_BCJ 46 bool 47 default n 48 49config XZ_DEC_TEST 50 tristate "XZ decompressor tester" 51 default n 52 depends on XZ_DEC 53 help 54 This allows passing .xz files to the in-kernel XZ decoder via 55 a character special file. It calculates CRC32 of the decompressed 56 data and writes diagnostics to the system log. 57 58 Unless you are developing the XZ decoder, you don't need this 59 and should say N. 60