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| author | Lasse Collin <lasse.collin@tukaani.org> | 2010-11-18 19:02:02 +0200 |
|---|---|---|
| committer | Lasse Collin <lasse.collin@tukaani.org> | 2010-11-18 19:02:02 +0200 |
| commit | e0c7703ddc0fe85e29305d3f214dece46357a5eb (patch) | |
| tree | 70701fa73cd3afebf5dd820668816cacc3c37727 /linux | |
| parent | c509816eaf6f918f2b1c44e0c574b9a5408b978a (diff) | |
| download | xz-embedded-e0c7703ddc0fe85e29305d3f214dece46357a5eb.tar.gz | |
Use xz_wrap.sh only for kernel image compression.
This is simpler.
Diffstat (limited to 'linux')
| -rwxr-xr-x | linux/scripts/xz_wrap.sh | 39 |
1 files changed, 9 insertions, 30 deletions
diff --git a/linux/scripts/xz_wrap.sh b/linux/scripts/xz_wrap.sh index d917784..17a5798 100755 --- a/linux/scripts/xz_wrap.sh +++ b/linux/scripts/xz_wrap.sh @@ -1,8 +1,7 @@ #!/bin/sh # -# This is a wrapper for xz to use appropriate compression options depending -# on what is being compressed. The only argument to this script should be -# "kernel" or "misc" to indicate what is being compressed. +# This is a wrapper for xz to compress the kernel image using appropriate +# compression options depending on the architecture. # # Author: Lasse Collin <lasse.collin@tukaani.org> # @@ -10,35 +9,15 @@ # You can do whatever you want with this file. # -# Defaults: No BCJ filter and no extra LZMA2 options. BCJ= LZMA2OPTS= -# Big dictionary is OK for the kernel image, but it's not OK -# for other things. -# -# BCJ filter is used only for the kernel, at least for now. -# It could be useful for non-trivial initramfs too, but it -# depends on the exact content of the initramfs image. -case $1 in - kernel) - DICT=32MiB - case $ARCH in - x86|x86_64) BCJ=--x86 ;; - powerpc) BCJ=--powerpc ;; - ia64) BCJ=--ia64; LZMA2OPTS=pb=4 ;; - arm) BCJ=--arm ;; - sparc) BCJ=--sparc ;; - esac - ;; - misc) - DICT=1MiB - ;; - *) - echo "xz_wrap.sh: Invalid argument \`$1'" >&2 - exit 1 - ;; +case $ARCH in + x86|x86_64) BCJ=--x86 ;; + powerpc) BCJ=--powerpc ;; + ia64) BCJ=--ia64; LZMA2OPTS=pb=4 ;; + arm) BCJ=--arm ;; + sparc) BCJ=--sparc ;; esac -# This is very slow, but it should give very good compression too. -exec xz --stdout --check=crc32 $BCJ --lzma2=preset=6e,$LZMA2OPTS,dict=$DICT +exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB |