patman: Correct lz4 compression parameters
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>
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index d8e01a3..10997e4 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -476,7 +476,8 @@
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)