X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=config.mk;h=ddf350e8e9ce5788a9f3e021ada5d3966092b2c6;hp=eb95093f46465a8b984ce871d70218418615989a;hb=0fecbba80ad21b1148265c7659f370838069c560;hpb=09b4a9cf4003599f2cd609587dfa5f0b754640ed diff --git a/config.mk b/config.mk index eb95093f46..ddf350e8e9 100644 --- a/config.mk +++ b/config.mk @@ -12,7 +12,7 @@ # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License @@ -23,19 +23,38 @@ ######################################################################### -ifneq ($(OBJTREE),$(SRCTREE)) +# Set shell to bash if possible, otherwise fall back to sh +SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ + else if [ -x /bin/bash ]; then echo /bin/bash; \ + else echo sh; fi; fi) + +export SHELL + ifeq ($(CURDIR),$(SRCTREE)) dir := else dir := $(subst $(SRCTREE)/,,$(CURDIR)) endif +ifneq ($(OBJTREE),$(SRCTREE)) +# Create object files for SPL in a separate directory +ifeq ($(CONFIG_SPL_BUILD),y) +obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) +else obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) +endif src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) +$(shell mkdir -p $(obj)) +else +# Create object files for SPL in a separate directory +ifeq ($(CONFIG_SPL_BUILD),y) +obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) + $(shell mkdir -p $(obj)) else obj := +endif src := endif @@ -53,7 +72,7 @@ HOSTSTRIP = strip # # Mac OS X / Darwin's C preprocessor is Apple specific. It # generates numerous errors and warnings. We want to bypass it -# and use GNU C's cpp. To do this we pass the -traditional-cpp +# and use GNU C's cpp. To do this we pass the -traditional-cpp # option to the compiler. Note that the -traditional-cpp flag # DOES NOT have the same semantics as GNU C's flag, all it does # is invoke the GNU preprocessor in stock ANSI/ISO C fashion. @@ -92,17 +111,41 @@ HOSTCFLAGS += -pedantic ######################################################################### # -# Option checker (courtesy linux kernel) to ensure +# Option checker, gcc version (courtesy linux kernel) to ensure # only supported compiler options are used # -cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) +CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk +CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o + +-include $(CC_OPTIONS_CACHE_FILE) + +cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \ + if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \ + > /dev/null 2>&1; then \ + echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \ + echo "$(1)"; fi) + +ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y) +cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2)) +else +cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\ + $(if $(call cc-option-sys,$1),$1,$2))) +endif + +# cc-version +# Usage gcc-ver := $(call cc-version) +cc-version = $(shell $(SHELL) $(SRCTREE)/tools/gcc-version.sh $(CC)) +binutils-version = $(shell $(SHELL) $(SRCTREE)/tools/binutils-version.sh $(AS)) # # Include the make variables (CC, etc...) # AS = $(CROSS_COMPILE)as -LD = $(CROSS_COMPILE)ld + +# Always use GNU ld +LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \ + then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;) + CC = $(CROSS_COMPILE)gcc CPP = $(CC) -E AR = $(CROSS_COMPILE)ar @@ -112,11 +155,14 @@ STRIP = $(CROSS_COMPILE)strip OBJCOPY = $(CROSS_COMPILE)objcopy OBJDUMP = $(CROSS_COMPILE)objdump RANLIB = $(CROSS_COMPILE)RANLIB +DTC = dtc +CHECK = sparse ######################################################################### # Load generated board configuration sinclude $(OBJTREE)/include/autoconf.mk +sinclude $(OBJTREE)/include/config.mk # Some architecture config.mk files need to know what CPUDIR is set to, # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. @@ -144,30 +190,52 @@ endif ######################################################################### -ifneq (,$(findstring s,$(MAKEFLAGS))) -ARFLAGS = cr -else -ARFLAGS = crv -endif +# We don't actually use $(ARFLAGS) anywhere anymore, so catch people +# who are porting old code to latest mainline but not updating $(AR). +ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR) RELFLAGS= $(PLATFORM_RELFLAGS) DBGFLAGS= -g # -DDEBUG OPTFLAGS= -Os #-fomit-frame-pointer -ifndef LDSCRIPT -#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug -ifeq ($(CONFIG_NAND_U_BOOT),y) -LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds -else -LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds -endif -endif + OBJCFLAGS += --gap-fill=0xff gccincdir := $(shell $(CC) -print-file-name=include) CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ -D__KERNEL__ -ifneq ($(TEXT_BASE),) -CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) + +# Enable garbage collection of un-used sections for SPL +ifeq ($(CONFIG_SPL_BUILD),y) +CPPFLAGS += -ffunction-sections -fdata-sections +LDFLAGS_FINAL += --gc-sections +endif + +ifneq ($(CONFIG_SYS_TEXT_BASE),) +CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) +endif + +ifneq ($(CONFIG_SPL_TEXT_BASE),) +CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE) +endif + +ifneq ($(CONFIG_SPL_PAD_TO),) +CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO) +endif + +ifneq ($(CONFIG_UBOOT_PAD_TO),) +CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO) +endif + +ifeq ($(CONFIG_SPL_BUILD),y) +CPPFLAGS += -DCONFIG_SPL_BUILD +endif + +# Does this architecture support generic board init? +ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) +ifneq ($(CONFIG_SYS_GENERIC_BOARD),) +CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \ +Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file) +endif endif ifneq ($(RESET_VECTOR_ADDRESS),) @@ -182,14 +250,23 @@ CPPFLAGS += -I$(TOPDIR)/include CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) -ifdef BUILD_TAG -CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ - -DBUILD_TAG='"$(BUILD_TAG)"' -else CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes + +ifdef BUILD_TAG +CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' endif -CFLAGS += $(call cc-option,-fno-stack-protector) +CFLAGS_SSP := $(call cc-option,-fno-stack-protector) +CFLAGS += $(CFLAGS_SSP) +# Some toolchains enable security related warning flags by default, +# but they don't make much sense in the u-boot world, so disable them. +CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \ + $(call cc-option,-Wno-format-security) +CFLAGS += $(CFLAGS_WARN) + +# Report stack usage if supported +CFLAGS_STACK := $(call cc-option,-fstack-usage) +CFLAGS += $(CFLAGS_STACK) # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g # option to the assembler. @@ -204,11 +281,23 @@ endif AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) -LDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS) -ifneq ($(TEXT_BASE),) -LDFLAGS += -Ttext $(TEXT_BASE) +LDFLAGS += $(PLATFORM_LDFLAGS) +LDFLAGS_FINAL += -Bstatic + +LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL) +ifneq ($(CONFIG_SYS_TEXT_BASE),) +LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) +endif + +LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) +ifneq ($(CONFIG_SPL_TEXT_BASE),) +LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE) endif +# Linus' kernel sanity checking tool +CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ + -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) + # Location of a usable BFD library, where we define "usable" as # "built for ${HOST}, supports ${TARGET}". Sensible values are # - When cross-compiling: the root of the cross-environment @@ -236,26 +325,40 @@ endif export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE -export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS +export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS ######################################################################### # Allow boards to use custom optimize flags on a per dir/file basis BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) +ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) +ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) +EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR)) +ALL_CFLAGS += $(EXTRA_CPPFLAGS) + +# The _DEP version uses the $< file target (for dependency generation) +# See rules.mk +EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \ + $(CPPFLAGS_$(BCURDIR)) $(obj)%.s: %.S - $(CPP) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \ - -o $@ $< + $(CPP) $(ALL_AFLAGS) -o $@ $< $(obj)%.o: %.S - $(CC) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \ - -o $@ $< -c + $(CC) $(ALL_AFLAGS) -o $@ $< -c $(obj)%.o: %.c - $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \ - -o $@ $< -c +ifneq ($(CHECKSRC),0) + $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $< +endif + $(CC) $(ALL_CFLAGS) -o $@ $< -c $(obj)%.i: %.c - $(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \ - -o $@ $< -c + $(CPP) $(ALL_CFLAGS) -o $@ $< -c $(obj)%.s: %.c - $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \ - -o $@ $< -c -S + $(CC) $(ALL_CFLAGS) -o $@ $< -c -S + +######################################################################### + +# If the list of objects to link is empty, just create an empty built-in.o +cmd_link_o_target = $(if $(strip $1),\ + $(LD) $(LDFLAGS) -r -o $@ $1,\ + rm -f $@; $(AR) rcs $@ ) #########################################################################