diff options
author | Timothy Pearson <tpearson@raptorengineering.com> | 2017-08-23 15:54:21 -0500 |
---|---|---|
committer | Timothy Pearson <tpearson@raptorengineering.com> | 2017-08-23 15:54:21 -0500 |
commit | 0223e595f4033e91e93403a7317bcc9e47676b8f (patch) | |
tree | 2ccd7127bc343f82456b76eeb0da2d380f6eaf65 /config.mk | |
download | ast2050-uboot-0223e595f4033e91e93403a7317bcc9e47676b8f.zip ast2050-uboot-0223e595f4033e91e93403a7317bcc9e47676b8f.tar.gz |
Initial import of modified u-boot tree
Original upstream URL:
git://git.denx.de/u-boot.git
Original upstream GIT hash:
62c175fbb8a0f9a926c88294ea9f7e88eb898f6c
Diffstat (limited to 'config.mk')
-rw-r--r-- | config.mk | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..7200ca4 --- /dev/null +++ b/config.mk @@ -0,0 +1,382 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# 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 +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +######################################################################### + +# 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 + +# clean the slate ... +PLATFORM_RELFLAGS = +PLATFORM_CPPFLAGS = +PLATFORM_LDFLAGS = + +######################################################################### + +HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ + $(HOSTCPPFLAGS) +HOSTSTRIP = strip + +# +# Mac OS X / Darwin's C preprocessor is Apple specific. It +# generates numerous errors and warnings. We want to bypass it +# and use GNU C's cpp. To do this we pass the -traditional-cpp +# option to the compiler. Note that the -traditional-cpp flag +# DOES NOT have the same semantics as GNU C's flag, all it does +# is invoke the GNU preprocessor in stock ANSI/ISO C fashion. +# +# Apple's linker is similar, thanks to the new 2 stage linking +# multiple symbol definitions are treated as errors, hence the +# -multiply_defined suppress option to turn off this error. +# + +ifeq ($(HOSTOS),darwin) +# get major and minor product version (e.g. '10' and '6' for Snow Leopard) +DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.') +DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.') + +os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ + $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) + +# Snow Leopards build environment has no longer restrictions as described above +HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") +HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") +HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") +else +HOSTCC = gcc +endif + +ifeq ($(HOSTOS),cygwin) +HOSTCFLAGS += -ansi +endif + +# We build some files with extra pedantic flags to try to minimize things +# that won't build on some weird host compiler -- though there are lots of +# exceptions for files that aren't complaint. + +HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) +HOSTCFLAGS += -pedantic + +######################################################################### +# +# Option checker, gcc version (courtesy linux kernel) to ensure +# only supported compiler options are used +# +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 + +# 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 +NM = $(CROSS_COMPILE)nm +LDR = $(CROSS_COMPILE)ldr +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 $(OBJTREE)/include/config.mk + +# Some architecture config.mk files need to know what CPUDIR is set to, +# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. +# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains +# CPU-specific code. +CPUDIR=arch/$(ARCH)/cpu/$(CPU) +ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR))) +CPUDIR=arch/$(ARCH)/cpu +endif + +sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules +sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules + +ifdef SOC +sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules +endif +ifdef VENDOR +BOARDDIR = $(VENDOR)/$(BOARD) +else +BOARDDIR = $(BOARD) +endif +ifdef BOARD +sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules +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 +OPTFLAGS= -Os #-fomit-frame-pointer + +OBJCFLAGS += --gap-fill=0xff + +gccincdir := $(shell $(CC) -print-file-name=include) + +CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ + -D__KERNEL__ + +# Enable garbage collection of un-used sections for SPL +ifeq ($(CONFIG_SPL_BUILD),y) +CPPFLAGS += -ffunction-sections -fdata-sections +LDFLAGS_FINAL += --gc-sections +endif + +# TODO(sjg@chromium.org): Is this correct on Mac OS? +ifdef CONFIG_FIT_SIGNATURE +HOSTLIBS += -lssl -lcrypto + +# This affects include/image.h, but including the board config file +# is tricky, so manually define this options here. +HOSTCFLAGS += -DCONFIG_FIT_SIGNATURE +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),) +CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS) +endif + +ifneq ($(OBJTREE),$(SRCTREE)) +CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include +endif + +CPPFLAGS += -I$(TOPDIR)/include +CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ + -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) + +CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes + +ifdef BUILD_TAG +CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"' +endif + +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) + +BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) + +ifeq ($(findstring examples/,$(BCURDIR)),) +ifeq ($(CONFIG_SPL_BUILD),) +ifdef FTRACE +CFLAGS += -finstrument-functions -DFTRACE +endif +endif +endif + +# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> +# option to the assembler. +AFLAGS_DEBUG := + +# turn jbsr into jsr for m68k +ifeq ($(ARCH),m68k) +ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) +AFLAGS_DEBUG := -Wa,-gstabs,-S +endif +endif + +AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) + +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 ${TARGET}". Sensible values are +# - When cross-compiling: the root of the cross-environment +# - Linux/ppc (native): /usr +# - NetBSD/ppc (native): you lose ... (must extract these from the +# binutils build directory, plus the native and U-Boot include +# files don't like each other) +# +# So far, this is used only by tools/gdb/Makefile. + +ifeq ($(HOSTOS),darwin) +BFD_ROOT_DIR = /usr/local/tools +else +ifeq ($(HOSTARCH),$(ARCH)) +# native +BFD_ROOT_DIR = /usr +else +#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 +#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 +BFD_ROOT_DIR = /opt/powerpc +endif +endif + +######################################################################### + +export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ + AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE +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 +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) $(ALL_AFLAGS) -o $@ $< +$(obj)%.o: %.S + $(CC) $(ALL_AFLAGS) -o $@ $< -c +$(obj)%.o: %.c +ifneq ($(CHECKSRC),0) + $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $< +endif + $(CC) $(ALL_CFLAGS) -o $@ $< -c +$(obj)%.i: %.c + $(CPP) $(ALL_CFLAGS) -o $@ $< -c +$(obj)%.s: %.c + $(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 $@ ) + +######################################################################### |