At present on large files, lz4 uses a larger block size (e.g. 256KB) than the 64KB supported by the U-Boot decompression implementation. Also it is optimised for maximum compression speed, producing larger output than we would like.
Update the parameters to correct these problems.
Signed-off-by: Simon Glass sjg@chromium.org ---
tools/patman/tools.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/patman/tools.py b/tools/patman/tools.py index d8e01a3e60e..10997e43868 100644 --- a/tools/patman/tools.py +++ b/tools/patman/tools.py @@ -476,7 +476,8 @@ def Compress(indata, algo, with_header=True): fname = GetOutputFilename('%s.comp.tmp' % algo) WriteFile(fname, indata) if algo == 'lz4': - data = Run('lz4', '--no-frame-crc', '-c', fname, binary=True) + data = Run('lz4', '--no-frame-crc', '-B4', '-5', '-c', fname, + binary=True) # cbfstool uses a very old version of lzma elif algo == 'lzma': outfname = GetOutputFilename('%s.comp.otmp' % algo)