[PATCH] scripts/make_fit.py: Drop explicit LZMA parallel compression

[Simon Glass]

On Thu, 12 Feb 2026 at 00:43, Chen-Yu Tsai <wenst at chromium.org> wrote:
>
> Parallel compression for LZMA was added using the plzip tool. However
> plzip produces lzip format output, which is different from the raw LZMA
> format that the lzma tool produces. This causes depthcharge (the second
> stage bootloader on Chromebooks) to fail to load the payload.
>
> Drop the explicit LZMA parallel compression toolchain. If the lzma tool
> on the build machine is from xz-utils, then there's a chance parallel
> compression is already enabled.
>
> The xz-utils manpage says the following for the -T (threads) argument:
>
>     Specify the number of worker threads to use.  Setting threads to a
>     special value 0 makes xz use up to as many threads as the processor(s)
>     on the system support.  The actual number of threads can be fewer than
>     threads if the input file is not big enough for threading with the
>     given settings or if using more threads would exceed the memory usage
>     limit.
>
>     [...]
>
>     The default value for threads is 0.  In xz 5.4.x and older the default
>     is 1.
>
> Fixes: fcdcf22a34b0 ("scripts/make_fit: Support a few more parallel compressors")
> Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>
> ---
> Please merge this for fixes.
>
>  scripts/make_fit.py | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Simon Glass <simon.glass at canonical.com>

Thanks for spotting that.

>
> diff --git a/scripts/make_fit.py b/scripts/make_fit.py
> index 517ca84fd32c..76ab40353d9a 100755
> --- a/scripts/make_fit.py
> +++ b/scripts/make_fit.py
> @@ -54,7 +54,7 @@ COMP_TOOLS = {
>      'bzip2': CompTool('.bz2', 'pbzip2,bzip2'),
>      'gzip': CompTool('.gz', 'pigz,gzip'),
>      'lz4': CompTool('.lz4', 'lz4'),
> -    'lzma': CompTool('.lzma', 'plzip,lzma'),
> +    'lzma': CompTool('.lzma', 'lzma'),
>      'lzo': CompTool('.lzo', 'lzop'),
>      'xz': CompTool('.xz', 'xz'),
>      'zstd': CompTool('.zstd', 'zstd'),
> --
> 2.53.0.239.g8d8fc8a987-goog
>