From a51ca085bff2f8c6155f18bb767fe2d053bbc90d Mon Sep 17 00:00:00 2001 From: Markus Stockhausen Date: Tue, 26 Jul 2022 13:44:48 +0200 Subject: tools: Add gzip-libdeflate advanced compressor Several devices provide U-Boot versions with only gzip compressed kernel support (e.g. Realtek switches). This compression method produces larger images than lzma. To save space on flash and avoid going the hard way with lzma-loader we can make use of enhanced gzip tool based on libdeflate compression library from https://github.com/ebiggers/libdeflate. It keeps 100% deflate/gzip compatibility while improving compression ratio. The image can be unpacked by the default inflate routines inside U-Boot. Signed-off-by: Markus Stockhausen [Switched to v1.15 and made it work with cmake] Signed-off-by: Olliver Schinagl Reviewed-by: Robert Marko Reviewed-by: Rosen Penev Reviewed-by: Sander Vanheule --- include/image-commands.mk | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/image-commands.mk') diff --git a/include/image-commands.mk b/include/image-commands.mk index 074e40e4e8..15084093d2 100644 --- a/include/image-commands.mk +++ b/include/image-commands.mk @@ -306,6 +306,11 @@ define Build/fit @mv $@.new $@ endef +define Build/libdeflate-gzip + $(STAGING_DIR_HOST)/bin/libdeflate-gzip -f -12 -c $@ $(1) > $@.new + @mv $@.new $@ +endef + define Build/gzip $(STAGING_DIR_HOST)/bin/gzip -f -9n -c $@ $(1) > $@.new @mv $@.new $@ -- cgit v1.2.3