1 config 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 9 if XZ_DEC 10 11 config XZ_DEC_X86 12 bool "x86 BCJ filter decoder" 13 default y if X86 14 select XZ_DEC_BCJ 15 16 config XZ_DEC_POWERPC 17 bool "PowerPC BCJ filter decoder" 18 default y if PPC 19 select XZ_DEC_BCJ 20 21 config XZ_DEC_IA64 22 bool "IA-64 BCJ filter decoder" 23 default y if IA64 24 select XZ_DEC_BCJ 25 26 config XZ_DEC_ARM 27 bool "ARM BCJ filter decoder" 28 default y if ARM 29 select XZ_DEC_BCJ 30 31 config XZ_DEC_ARMTHUMB 32 bool "ARM-Thumb BCJ filter decoder" 33 default y if (ARM && ARM_THUMB) 34 select XZ_DEC_BCJ 35 36 config XZ_DEC_SPARC 37 bool "SPARC BCJ filter decoder" 38 default y if SPARC 39 select XZ_DEC_BCJ 40 41 endif 42 43 config XZ_DEC_BCJ 44 bool 45 default n 46 47 config XZ_DEC_TEST 48 tristate "XZ decompressor tester" 49 default n 50 depends on XZ_DEC 51 help 52 This allows passing .xz files to the in-kernel XZ decoder via 53 a character special file. It calculates CRC32 of the decompressed 54 data and writes diagnostics to the system log. 55 56 Unless you are developing the XZ decoder, you don't need this 57 and should say N. 58
