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kernel-uboot: Support lzma compressed algorithm

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Linux kernel supports to compress its output binary with lzma algorithm and
U-Boot support to decompress lzma compressed image.

Both xz and lzma algorithms are identical and users can use xz utility with
format parameter to compress Image which supports lzma algorithm.

Add the following command to support lzma. This command is refer to Linux
kernel, https://github.com/torvalds/linux/blob/master/arch/powerpc/boot/wrapper

"xz --format=lzma -f -6 linux.bin"

(From OE-Core rev: 211178065bdca293c84c41a9a1e79c10df95b6ad)

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Jamin Lin
2024-11-20 14:17:24 +08:00
committed by Richard Purdie
parent 539d7700a0
commit 86bfd2c7a2
1 changed files with 2 additions and 0 deletions
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2
meta/classes-recipe/kernel-uboot.bbclass
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@@ -41,6 +41,8 @@ uboot_prep_kimage() {
gzip -9 linux.bin
elif [ "${linux_comp}" = "lzo" ] ; then
lzop -9 linux.bin
elif [ "${linux_comp}" = "lzma" ] ; then
xz --format=lzma -f -6 linux.bin
fi
mv -f "linux.bin${linux_suffix}" linux.bin
fi