72 lines
1.7 KiB
Plaintext
72 lines
1.7 KiB
Plaintext
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# SPDX-License-Identifier: GPL-2.0-only
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config XZ_DEC
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tristate "XZ decompression support"
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select CRC32
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help
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LZMA2 compression algorithm and BCJ filters are supported using
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the .xz file format as the container. For integrity checking,
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CRC32 is supported. See Documentation/staging/xz.rst for more information.
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if XZ_DEC
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config XZ_DEC_X86
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bool "x86 BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_POWERPC
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bool "PowerPC BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_IA64
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bool "IA-64 BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_ARM
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bool "ARM BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_ARMTHUMB
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bool "ARM-Thumb BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_SPARC
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bool "SPARC BCJ filter decoder" if EXPERT
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default y
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select XZ_DEC_BCJ
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config XZ_DEC_MICROLZMA
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bool "MicroLZMA decoder"
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default n
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help
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MicroLZMA is a header format variant where the first byte
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of a raw LZMA stream (without the end of stream marker) has
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been replaced with a bitwise-negation of the lc/lp/pb
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properties byte. MicroLZMA was created to be used in EROFS
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but can be used by other things too where wasting minimal
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amount of space for headers is important.
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Unless you know that you need this, say N.
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endif
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config XZ_DEC_BCJ
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bool
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default n
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config XZ_DEC_TEST
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tristate "XZ decompressor tester"
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default n
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depends on XZ_DEC
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help
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This allows passing .xz files to the in-kernel XZ decoder via
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a character special file. It calculates CRC32 of the decompressed
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data and writes diagnostics to the system log.
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Unless you are developing the XZ decoder, you don't need this
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and should say N.
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