upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support

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Masahiro Yamada 026f9cf24f kbuild: improve Kbuild speed ... Kbuild brought about many advantages for us but a significant performance regression was reported by Simon Glass. After some discussions and analysis, it turned out its main cause is in $(call cc-option,...). Historically, U-Boot parses all config.mk (arch/*/config.mk and board/*/config.mk) every time descending into subdirectories. That means cc-options are evaluated over and over again. $(call cc-option,...) is useful but costly. So we want to evaluate them only in ./Makefile and spl/Makefile and export compiler flags. This commit changes the build system as follows: - Modify scripts/Makefile.build to not include config.mk Instead, add $(PLATFORM_CPPFLAGS) to asflags-y, ccflags-y, cppflags-y. - Export many variables Going forward, Kbuild will not parse config.mk files when it descends into subdirectories. If we want to set variables in config.mk and use them in subdirectories, they must be exported. This is the list of variables to get exported: PLATFORM_CPPFLAGS CPUDIR BOARDDIR OBJCOPYFLAGS LDFLAGS LDFLAGS_FINAL (used in nand_spl/board/*/*/Makefile) CONFIG_STANDALONE_LOAD_ADDR (used in examples/standalone/Makefile) SYM_PREFIX (used in examples/standalone/Makefile) RELFLAGS (used in examples/standalone/Makefile) - Delete CPPFLAGS This variable has been replaced with PLATFORM_CPPFLAGS - Copy gcclibdir from example/standalone/Makefile to arch/sparc/config.mk The reference in CONFIG_STANDALONE_LOAD_ADDR must be resolved before it is exported. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reported-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> [on Sandbox] Tested-by: Stephen Warren <swarren@nvidia.com> [on Tegra]		10 years ago
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basic	kbuild: import more build scripts from Linux v3.13 tag	10 years ago
.gitignore	kernel-doc: move kernel-doc tools to scripts/	10 years ago
Kbuild.include	kbuild: Do not generate .*.su files at the top directory	10 years ago
Makefile	kernel-doc: move kernel-doc tools to scripts/	10 years ago
Makefile.build	kbuild: improve Kbuild speed	10 years ago
Makefile.clean	kbuild: use scripts/Makefile.clean	10 years ago
Makefile.host	kbuild: import more build scripts from Linux v3.13 tag	10 years ago
Makefile.lib	kbuild: improve Kbuild speed	10 years ago
binutils-version.sh	Makefile: Move some scripts imported from Linux	11 years ago
checkpatch.pl	scripts: update checkpatch.pl to latest upstream version	10 years ago
checkstack.pl	Makefile: Move some scripts imported from Linux	11 years ago
cleanpatch	Makefile: Move some scripts imported from Linux	11 years ago
docproc.c	kernel-doc: update kernel-doc related files to Linux v3.13	10 years ago
dtc-version.sh	Makefile: Move some scripts imported from Linux	11 years ago
gcc-stack-usage.sh	Makefile: add a new script to check -fstack-usage support	10 years ago
gcc-version.sh	Makefile: Move some scripts imported from Linux	11 years ago
kernel-doc	kbuild: consolidate version and timestamp headers generation	10 years ago
mkmakefile	kbuild: import more build scripts from Linux v3.13 tag	10 years ago
setlocalversion	Makefile: Move some scripts imported from Linux	11 years ago