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tools: Add gzip-libdeflate advanced compressor

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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 <markus.stockhausen@gmx.de>
[Switched to v1.15 and made it work with cmake]
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Reviewed-by: Robert Marko <robimarko@gmail.com>
Reviewed-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Sander Vanheule <sander@svanheule.net>
This commit is contained in:
Markus Stockhausen 2022-07-26 13:44:48 +02:00 committed by AmadeusGhost
parent a20ec5143d
commit 0744781758
3 changed files with 39 additions and 2 deletions
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5
include/image-commands.mk
View File

@ -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 $@

5
tools/Makefile
View File

@ -23,8 +23,8 @@ endif
tools-y += autoconf autoconf-archive automake bc bison cmake cpio dosfstools
tools-y += e2fsprogs expat fakeroot findutils firmware-utils flex gengetopt
tools-y += libressl libtool lzma m4 make-ext4fs meson missing-macros mkimage
tools-y += mklibs mtd-utils mtools ninja padjffs2 patch-image
tools-y += libdeflate libressl libtool lzma m4 make-ext4fs meson missing-macros
tools-y += mkimage mklibs mtd-utils mtools ninja padjffs2 patch-image
tools-y += patchelf pkgconf quilt squashfskit4 sstrip zip zlib zstd
tools-$(if $(CONFIG_BUILD_ALL_HOST_TOOLS)$(BUILD_B43_TOOLS),y) += b43-tools
tools-$(if $(CONFIG_BUILD_ALL_HOST_TOOLS)$(BUILD_ISL),y) += isl
@ -56,6 +56,7 @@ $(curdir)/genext2fs/compile := $(curdir)/libtool/compile
$(curdir)/gengetopt/compile := $(curdir)/libtool/compile
$(curdir)/gmp/compile := $(curdir)/libtool/compile
$(curdir)/isl/compile := $(curdir)/gmp/compile
$(curdir)/libdeflate/compile := $(curdir)/cmake/compile
$(curdir)/libressl/compile := $(curdir)/pkgconf/compile
$(curdir)/libtool/compile := $(curdir)/automake/compile $(curdir)/missing-macros/compile
$(curdir)/lzma-old/compile := $(curdir)/zlib/compile

31
tools/libdeflate/Makefile Normal file
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@ -0,0 +1,31 @@
#
# Copyright (C) 2022 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
include $(TOPDIR)/rules.mk
PKG_NAME:=libdeflate
PKG_VERSION:=1.15
PKG_RELEASE:=1
PKG_SOURCE_URL:=https://github.com/ebiggers/libdeflate.git
PKG_SOURCE_PROTO:=git
PKG_SOURCE_VERSION:=v$(PKG_VERSION)
PKG_MIRROR_HASH:=122feff4543541b547dc89e832adf262c81911ae1acbccdc591f0353a85b600a
include $(INCLUDE_DIR)/host-build.mk
include $(INCLUDE_DIR)/cmake.mk
define Host/Install
$(INSTALL_BIN) $(HOST_BUILD_DIR)/programs/libdeflate-gzip $(STAGING_DIR_HOST)/bin/
$(LN) libdeflate-gzip $(STAGING_DIR_HOST)/bin/libdeflate-gunzip
endef
define Host/Clean
rm -f $(STAGING_DIR_HOST)/bin/libdeflate-gzip
rm -f $(STAGING_DIR_HOST)/bin/libdeflate-gunzip
endef
$(eval $(call HostBuild))