[u-boot.git] / config.mk

#
# (C) Copyright 2000-2013
# Wolfgang Denk, DENX Software Engineering, [email protected].
#
# SPDX-License-Identifier:	GPL-2.0+
#
#########################################################################

# 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))
dtc-version = $(shell $(SHELL) $(SRCTREE)/tools/dtc-version.sh $(DTC))

#
# 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 # -DDEBUG
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([email protected]): 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 $@ )

#########################################################################
Commit	Line	Data
e2211743	1	#
eca3aeb3	2	# (C) Copyright 2000-2013
e2211743 WD	3	# Wolfgang Denk, DENX Software Engineering, [email protected].
e2211743 WD	4	#
eca3aeb3	5	# SPDX-License-Identifier: GPL-2.0+
e2211743	6	#
e2211743 WD	7	#########################################################################
e2211743 WD	8
120ae609 BT	9	# Set shell to bash if possible, otherwise fall back to sh
	10	SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
	11	else if [ -x /bin/bash ]; then echo /bin/bash; \
	12	else echo sh; fi; fi)
	13
	14	export SHELL
	15
f9328639	16	ifeq ($(CURDIR),$(SRCTREE))
511d0c72	17	dir :=
f9328639 MB	18	else
	19	dir := $(subst $(SRCTREE)/,,$(CURDIR))
	20	endif
	21
c8f9c302 DS	22	ifneq ($(OBJTREE),$(SRCTREE))
	23	# Create object files for SPL in a separate directory
	24	ifeq ($(CONFIG_SPL_BUILD),y)
	25	obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
	26	else
f9328639	27	obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
c8f9c302	28	endif
f9328639 MB	29	src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
f9328639 MB	30
c8f9c302 DS	31	$(shell mkdir -p $(obj))
	32	else
	33	# Create object files for SPL in a separate directory
	34	ifeq ($(CONFIG_SPL_BUILD),y)
	35	obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
	36
f9328639 MB	37	$(shell mkdir -p $(obj))
	38	else
	39	obj :=
c8f9c302	40	endif
f9328639 MB	41	src :=
	42	endif
	43
592c5cab WD	44	# clean the slate ...
	45	PLATFORM_RELFLAGS =
	46	PLATFORM_CPPFLAGS =
	47	PLATFORM_LDFLAGS =
	48
e2211743 WD	49	#########################################################################
e2211743 WD	50
d984fed0 SW	51	HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
	52	$(HOSTCPPFLAGS)
	53	HOSTSTRIP = strip
	54
	55	#
	56	# Mac OS X / Darwin's C preprocessor is Apple specific. It
	57	# generates numerous errors and warnings. We want to bypass it
844f07d8	58	# and use GNU C's cpp. To do this we pass the -traditional-cpp
d984fed0 SW	59	# option to the compiler. Note that the -traditional-cpp flag
	60	# DOES NOT have the same semantics as GNU C's flag, all it does
	61	# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
	62	#
	63	# Apple's linker is similar, thanks to the new 2 stage linking
	64	# multiple symbol definitions are treated as errors, hence the
	65	# -multiply_defined suppress option to turn off this error.
	66	#
	67
4cda4378	68	ifeq ($(HOSTOS),darwin)
c7da8c19 AB	69	# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
	70	DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion \| cut -f 1 -d '.')
	71	DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion \| cut -f 2 -d '.')
	72
f534c7cd MF	73	os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
f534c7cd MF	74	$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
c7da8c19 AB	75
c7da8c19 AB	76	# Snow Leopards build environment has no longer restrictions as described above
f534c7cd MF	77	HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
	78	HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
	79	HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
e2211743 WD	80	else
	81	HOSTCC = gcc
	82	endif
d984fed0 SW	83
	84	ifeq ($(HOSTOS),cygwin)
	85	HOSTCFLAGS += -ansi
	86	endif
	87
	88	# We build some files with extra pedantic flags to try to minimize things
	89	# that won't build on some weird host compiler -- though there are lots of
	90	# exceptions for files that aren't complaint.
	91
	92	HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
	93	HOSTCFLAGS += -pedantic
e2211743 WD	94
e2211743 WD	95	#########################################################################
1820d4c7	96	#
19a695f8	97	# Option checker, gcc version (courtesy linux kernel) to ensure
1820d4c7 WD	98	# only supported compiler options are used
1820d4c7 WD	99	#
b6a467d7	100	CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk
6f4acc17	101	CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o
b6a467d7 DS	102
	103	-include $(CC_OPTIONS_CACHE_FILE)
	104
6f4acc17 TR	105	cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \
6f4acc17 TR	106	if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \
b6a467d7 DS	107	> /dev/null 2>&1; then \
	108	echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \
	109	echo "$(1)"; fi)
	110
	111	ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y)
	112	cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2))
	113	else
	114	cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\
	115	$(if $(call cc-option-sys,$1),$1,$2)))
	116	endif
e2211743	117
19a695f8 TR	118	# cc-version
	119	# Usage gcc-ver := $(call cc-version)
	120	cc-version = $(shell $(SHELL) $(SRCTREE)/tools/gcc-version.sh $(CC))
2051ff34	121	binutils-version = $(shell $(SHELL) $(SRCTREE)/tools/binutils-version.sh $(AS))
501ebdf2	122	dtc-version = $(shell $(SHELL) $(SRCTREE)/tools/dtc-version.sh $(DTC))
19a695f8	123
e2211743 WD	124	#
	125	# Include the make variables (CC, etc...)
	126	#
	127	AS = $(CROSS_COMPILE)as
7cb714a5 KR	128
	129	# Always use GNU ld
	130	LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \
	131	then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;)
	132
e2211743 WD	133	CC = $(CROSS_COMPILE)gcc
	134	CPP = $(CC) -E
	135	AR = $(CROSS_COMPILE)ar
	136	NM = $(CROSS_COMPILE)nm
94a91e24	137	LDR = $(CROSS_COMPILE)ldr
e2211743 WD	138	STRIP = $(CROSS_COMPILE)strip
	139	OBJCOPY = $(CROSS_COMPILE)objcopy
	140	OBJDUMP = $(CROSS_COMPILE)objdump
	141	RANLIB = $(CROSS_COMPILE)RANLIB
bbb0b128	142	DTC = dtc
4ab64933	143	CHECK = sparse
e2211743	144
c4e5f52a WD	145	#########################################################################
	146
	147	# Load generated board configuration
	148	sinclude $(OBJTREE)/include/autoconf.mk
5e987ddf	149	sinclude $(OBJTREE)/include/config.mk
c4e5f52a	150
03b7004d PT	151	# Some architecture config.mk files need to know what CPUDIR is set to,
03b7004d PT	152	# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
8d1f2682 PT	153	# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
	154	# CPU-specific code.
	155	CPUDIR=arch/$(ARCH)/cpu/$(CPU)
	156	ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
	157	CPUDIR=arch/$(ARCH)/cpu
	158	endif
03b7004d	159
ea0364f1	160	sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
03b7004d PT	161	sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
03b7004d PT	162
c4e5f52a	163	ifdef SOC
03b7004d	164	sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
c4e5f52a WD	165	endif
	166	ifdef VENDOR
	167	BOARDDIR = $(VENDOR)/$(BOARD)
	168	else
	169	BOARDDIR = $(BOARD)
	170	endif
	171	ifdef BOARD
	172	sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
	173	endif
	174
	175	#########################################################################
	176
5968adc4 MF	177	# We don't actually use $(ARFLAGS) anywhere anymore, so catch people
	178	# who are porting old code to latest mainline but not updating $(AR).
	179	ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR)
e2211743	180	RELFLAGS= $(PLATFORM_RELFLAGS)
9acb626f	181	DBGFLAGS= -g # -DDEBUG
e2211743	182	OPTFLAGS= -Os #-fomit-frame-pointer
83b7e2a7	183
6dd652fa	184	OBJCFLAGS += --gap-fill=0xff
e2211743	185
b783edae WD	186	gccincdir := $(shell $(CC) -print-file-name=include)
b783edae WD	187
e2211743	188	CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
c1f5805a	189	-D__KERNEL__
c8f9c302 DS	190
	191	# Enable garbage collection of un-used sections for SPL
	192	ifeq ($(CONFIG_SPL_BUILD),y)
	193	CPPFLAGS += -ffunction-sections -fdata-sections
	194	LDFLAGS_FINAL += --gc-sections
	195	endif
	196
29ce737d SG	197	# TODO([email protected]): Is this correct on Mac OS?
	198	ifdef CONFIG_FIT_SIGNATURE
	199	HOSTLIBS += -lssl -lcrypto
971c450a SG	200
	201	# This affects include/image.h, but including the board config file
	202	# is tricky, so manually define this options here.
	203	HOSTCFLAGS += -DCONFIG_FIT_SIGNATURE
29ce737d SG	204	endif
29ce737d SG	205
14d0a02a WD	206	ifneq ($(CONFIG_SYS_TEXT_BASE),)
14d0a02a WD	207	CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
161b2af4	208	endif
f9328639	209
c8f9c302 DS	210	ifneq ($(CONFIG_SPL_TEXT_BASE),)
	211	CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE)
	212	endif
	213
94aebe6c SR	214	ifneq ($(CONFIG_SPL_PAD_TO),)
	215	CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO)
	216	endif
	217
ecddccd0 SR	218	ifneq ($(CONFIG_UBOOT_PAD_TO),)
	219	CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO)
	220	endif
	221
c8f9c302 DS	222	ifeq ($(CONFIG_SPL_BUILD),y)
	223	CPPFLAGS += -DCONFIG_SPL_BUILD
	224	endif
	225
5c1a7ea6 SG	226	# Does this architecture support generic board init?
	227	ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
	228	ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
fada9e20 SG	229	CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \
fada9e20 SG	230	Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
5c1a7ea6 SG	231	endif
	232	endif
	233
6c97a20d KG	234	ifneq ($(RESET_VECTOR_ADDRESS),)
	235	CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
	236	endif
	237
f9328639 MB	238	ifneq ($(OBJTREE),$(SRCTREE))
	239	CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
	240	endif
	241
	242	CPPFLAGS += -I$(TOPDIR)/include
53677ef1	243	CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
f9328639	244	-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
e2211743	245
e2211743	246	CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
d642c467 MV	247
	248	ifdef BUILD_TAG
	249	CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
e2211743 WD	250	endif
e2211743 WD	251
cca4e4ae WD	252	CFLAGS_SSP := $(call cc-option,-fno-stack-protector)
cca4e4ae WD	253	CFLAGS += $(CFLAGS_SSP)
6262e4e7 MF	254	# Some toolchains enable security related warning flags by default,
6262e4e7 MF	255	# but they don't make much sense in the u-boot world, so disable them.
cca4e4ae WD	256	CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \
	257	$(call cc-option,-Wno-format-security)
	258	CFLAGS += $(CFLAGS_WARN)
28eab0d7	259
4a30f1e8 TR	260	# Report stack usage if supported
	261	CFLAGS_STACK := $(call cc-option,-fstack-usage)
	262	CFLAGS += $(CFLAGS_STACK)
	263
5c2aeac5 SG	264	BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
	265
	266	ifeq ($(findstring examples/,$(BCURDIR)),)
	267	ifeq ($(CONFIG_SPL_BUILD),)
	268	ifdef FTRACE
	269	CFLAGS += -finstrument-functions -DFTRACE
	270	endif
	271	endif
	272	endif
	273
e11887a7 HS	274	# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
	275	# option to the assembler.
	276	AFLAGS_DEBUG :=
b62fa913	277
483a0cf8 MB	278	# turn jbsr into jsr for m68k
	279	ifeq ($(ARCH),m68k)
	280	ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
	281	AFLAGS_DEBUG := -Wa,-gstabs,-S
	282	endif
483a0cf8	283	endif
b62fa913	284
e2211743 WD	285	AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
e2211743 WD	286
8aba9dce	287	LDFLAGS += $(PLATFORM_LDFLAGS)
6dc1eceb	288	LDFLAGS_FINAL += -Bstatic
8aba9dce	289
6dc1eceb	290	LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL)
14d0a02a	291	ifneq ($(CONFIG_SYS_TEXT_BASE),)
8aba9dce	292	LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
161b2af4	293	endif
e2211743	294
c8f9c302 DS	295	LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL)
	296	ifneq ($(CONFIG_SPL_TEXT_BASE),)
	297	LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE)
	298	endif
	299
4ab64933 KP	300	# Linus' kernel sanity checking tool
	301	CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
	302	-Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
	303
e2211743 WD	304	# Location of a usable BFD library, where we define "usable" as
	305	# "built for ${HOST}, supports ${TARGET}". Sensible values are
	306	# - When cross-compiling: the root of the cross-environment
	307	# - Linux/ppc (native): /usr
	308	# - NetBSD/ppc (native): you lose ... (must extract these from the
	309	# binutils build directory, plus the native and U-Boot include
	310	# files don't like each other)
	311	#
	312	# So far, this is used only by tools/gdb/Makefile.
	313
4cda4378	314	ifeq ($(HOSTOS),darwin)
e2211743 WD	315	BFD_ROOT_DIR = /usr/local/tools
e2211743 WD	316	else
ea909b76 WD	317	ifeq ($(HOSTARCH),$(ARCH))
	318	# native
	319	BFD_ROOT_DIR = /usr
	320	else
e2211743 WD	321	#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
e2211743 WD	322	#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
e2211743 WD	323	BFD_ROOT_DIR = /opt/powerpc
e2211743 WD	324	endif
ea909b76	325	endif
e2211743 WD	326
	327	#########################################################################
	328
d984fed0	329	export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
434c51a5	330	AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
14d0a02a	331	export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
e2211743 WD	332
	333	#########################################################################
	334
5ec5529b	335	# Allow boards to use custom optimize flags on a per dir/file basis
326a6945 MF	336	ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR))
326a6945 MF	337	ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR))
47508843 SG	338	EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR))
	339	ALL_CFLAGS += $(EXTRA_CPPFLAGS)
	340
	341	# The _DEP version uses the $< file target (for dependency generation)
	342	# See rules.mk
	343	EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \
	344	$(CPPFLAGS_$(BCURDIR))
f9328639	345	$(obj)%.s: %.S
326a6945	346	$(CPP) $(ALL_AFLAGS) -o $@ $<
f9328639	347	$(obj)%.o: %.S
326a6945	348	$(CC) $(ALL_AFLAGS) -o $@ $< -c
f9328639	349	$(obj)%.o: %.c
4ab64933 KP	350	ifneq ($(CHECKSRC),0)
	351	$(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $<
	352	endif
326a6945	353	$(CC) $(ALL_CFLAGS) -o $@ $< -c
31f30c9e	354	$(obj)%.i: %.c
326a6945	355	$(CPP) $(ALL_CFLAGS) -o $@ $< -c
31f30c9e	356	$(obj)%.s: %.c
326a6945	357	$(CC) $(ALL_CFLAGS) -o $@ $< -c -S
f9328639	358
e2211743	359	#########################################################################
6d8962e8 SC	360
	361	# If the list of objects to link is empty, just create an empty built-in.o
	362	cmd_link_o_target = $(if $(strip $1),\
8aba9dce	363	$(LD) $(LDFLAGS) -r -o $@ $1,\
844f07d8	364	rm -f $@; $(AR) rcs $@ )
6d8962e8 SC	365
6d8962e8 SC	366	#########################################################################