162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ciconfig XZ_DEC 362306a36Sopenharmony_ci tristate "XZ decompression support" 462306a36Sopenharmony_ci select CRC32 562306a36Sopenharmony_ci help 662306a36Sopenharmony_ci LZMA2 compression algorithm and BCJ filters are supported using 762306a36Sopenharmony_ci the .xz file format as the container. For integrity checking, 862306a36Sopenharmony_ci CRC32 is supported. See Documentation/staging/xz.rst for more information. 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciif XZ_DEC 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ciconfig XZ_DEC_X86 1362306a36Sopenharmony_ci bool "x86 BCJ filter decoder" if EXPERT 1462306a36Sopenharmony_ci default y 1562306a36Sopenharmony_ci select XZ_DEC_BCJ 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ciconfig XZ_DEC_POWERPC 1862306a36Sopenharmony_ci bool "PowerPC BCJ filter decoder" if EXPERT 1962306a36Sopenharmony_ci default y 2062306a36Sopenharmony_ci select XZ_DEC_BCJ 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ciconfig XZ_DEC_IA64 2362306a36Sopenharmony_ci bool "IA-64 BCJ filter decoder" if EXPERT 2462306a36Sopenharmony_ci default y 2562306a36Sopenharmony_ci select XZ_DEC_BCJ 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ciconfig XZ_DEC_ARM 2862306a36Sopenharmony_ci bool "ARM BCJ filter decoder" if EXPERT 2962306a36Sopenharmony_ci default y 3062306a36Sopenharmony_ci select XZ_DEC_BCJ 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ciconfig XZ_DEC_ARMTHUMB 3362306a36Sopenharmony_ci bool "ARM-Thumb BCJ filter decoder" if EXPERT 3462306a36Sopenharmony_ci default y 3562306a36Sopenharmony_ci select XZ_DEC_BCJ 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ciconfig XZ_DEC_SPARC 3862306a36Sopenharmony_ci bool "SPARC BCJ filter decoder" if EXPERT 3962306a36Sopenharmony_ci default y 4062306a36Sopenharmony_ci select XZ_DEC_BCJ 4162306a36Sopenharmony_ci 4262306a36Sopenharmony_ciconfig XZ_DEC_MICROLZMA 4362306a36Sopenharmony_ci bool "MicroLZMA decoder" 4462306a36Sopenharmony_ci default n 4562306a36Sopenharmony_ci help 4662306a36Sopenharmony_ci MicroLZMA is a header format variant where the first byte 4762306a36Sopenharmony_ci of a raw LZMA stream (without the end of stream marker) has 4862306a36Sopenharmony_ci been replaced with a bitwise-negation of the lc/lp/pb 4962306a36Sopenharmony_ci properties byte. MicroLZMA was created to be used in EROFS 5062306a36Sopenharmony_ci but can be used by other things too where wasting minimal 5162306a36Sopenharmony_ci amount of space for headers is important. 5262306a36Sopenharmony_ci 5362306a36Sopenharmony_ci Unless you know that you need this, say N. 5462306a36Sopenharmony_ci 5562306a36Sopenharmony_ciendif 5662306a36Sopenharmony_ci 5762306a36Sopenharmony_ciconfig XZ_DEC_BCJ 5862306a36Sopenharmony_ci bool 5962306a36Sopenharmony_ci default n 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_ciconfig XZ_DEC_TEST 6262306a36Sopenharmony_ci tristate "XZ decompressor tester" 6362306a36Sopenharmony_ci default n 6462306a36Sopenharmony_ci depends on XZ_DEC 6562306a36Sopenharmony_ci help 6662306a36Sopenharmony_ci This allows passing .xz files to the in-kernel XZ decoder via 6762306a36Sopenharmony_ci a character special file. It calculates CRC32 of the decompressed 6862306a36Sopenharmony_ci data and writes diagnostics to the system log. 6962306a36Sopenharmony_ci 7062306a36Sopenharmony_ci Unless you are developing the XZ decoder, you don't need this 7162306a36Sopenharmony_ci and should say N. 72