[people/ms/u-boot.git] / config.mk

#
# (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 # -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(sjg@chromium.org): Is this correct on Mac OS?
ifdef CONFIG_FIT_SIGNATURE
HOSTLIBS	+= -lssl -lcrypto
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	#
f9328639	2	# (C) Copyright 2000-2006
e2211743 WD	3	# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	#
	5	# See file CREDITS for list of people who contributed to this
	6	# project.
	7	#
	8	# This program is free software; you can redistribute it and/or
	9	# modify it under the terms of the GNU General Public License as
	10	# published by the Free Software Foundation; either version 2 of
	11	# the License, or (at your option) any later version.
	12	#
	13	# This program is distributed in the hope that it will be useful,
	14	# but WITHOUT ANY WARRANTY; without even the implied warranty of
844f07d8	15	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
e2211743 WD	16	# GNU General Public License for more details.
	17	#
	18	# You should have received a copy of the GNU General Public License
	19	# along with this program; if not, write to the Free Software
	20	# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	# MA 02111-1307 USA
	22	#
	23
	24	#########################################################################
	25
120ae609 BT	26	# Set shell to bash if possible, otherwise fall back to sh
	27	SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
	28	else if [ -x /bin/bash ]; then echo /bin/bash; \
	29	else echo sh; fi; fi)
	30
	31	export SHELL
	32
f9328639	33	ifeq ($(CURDIR),$(SRCTREE))
511d0c72	34	dir :=
f9328639 MB	35	else
	36	dir := $(subst $(SRCTREE)/,,$(CURDIR))
	37	endif
	38
c8f9c302 DS	39	ifneq ($(OBJTREE),$(SRCTREE))
	40	# Create object files for SPL in a separate directory
	41	ifeq ($(CONFIG_SPL_BUILD),y)
	42	obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
	43	else
f9328639	44	obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
c8f9c302	45	endif
f9328639 MB	46	src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
f9328639 MB	47
c8f9c302 DS	48	$(shell mkdir -p $(obj))
	49	else
	50	# Create object files for SPL in a separate directory
	51	ifeq ($(CONFIG_SPL_BUILD),y)
	52	obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
	53
f9328639 MB	54	$(shell mkdir -p $(obj))
	55	else
	56	obj :=
c8f9c302	57	endif
f9328639 MB	58	src :=
	59	endif
	60
592c5cab WD	61	# clean the slate ...
	62	PLATFORM_RELFLAGS =
	63	PLATFORM_CPPFLAGS =
	64	PLATFORM_LDFLAGS =
	65
e2211743 WD	66	#########################################################################
e2211743 WD	67
d984fed0 SW	68	HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
	69	$(HOSTCPPFLAGS)
	70	HOSTSTRIP = strip
	71
	72	#
	73	# Mac OS X / Darwin's C preprocessor is Apple specific. It
	74	# generates numerous errors and warnings. We want to bypass it
844f07d8	75	# and use GNU C's cpp. To do this we pass the -traditional-cpp
d984fed0 SW	76	# option to the compiler. Note that the -traditional-cpp flag
	77	# DOES NOT have the same semantics as GNU C's flag, all it does
	78	# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
	79	#
	80	# Apple's linker is similar, thanks to the new 2 stage linking
	81	# multiple symbol definitions are treated as errors, hence the
	82	# -multiply_defined suppress option to turn off this error.
	83	#
	84
4cda4378	85	ifeq ($(HOSTOS),darwin)
c7da8c19 AB	86	# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
	87	DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion \| cut -f 1 -d '.')
	88	DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion \| cut -f 2 -d '.')
	89
f534c7cd MF	90	os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
f534c7cd MF	91	$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
c7da8c19 AB	92
c7da8c19 AB	93	# Snow Leopards build environment has no longer restrictions as described above
f534c7cd MF	94	HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
	95	HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
	96	HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
e2211743 WD	97	else
	98	HOSTCC = gcc
	99	endif
d984fed0 SW	100
	101	ifeq ($(HOSTOS),cygwin)
	102	HOSTCFLAGS += -ansi
	103	endif
	104
	105	# We build some files with extra pedantic flags to try to minimize things
	106	# that won't build on some weird host compiler -- though there are lots of
	107	# exceptions for files that aren't complaint.
	108
	109	HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
	110	HOSTCFLAGS += -pedantic
e2211743 WD	111
e2211743 WD	112	#########################################################################
1820d4c7	113	#
19a695f8	114	# Option checker, gcc version (courtesy linux kernel) to ensure
1820d4c7 WD	115	# only supported compiler options are used
1820d4c7 WD	116	#
b6a467d7	117	CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk
6f4acc17	118	CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o
b6a467d7 DS	119
	120	-include $(CC_OPTIONS_CACHE_FILE)
	121
6f4acc17 TR	122	cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \
6f4acc17 TR	123	if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \
b6a467d7 DS	124	> /dev/null 2>&1; then \
	125	echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \
	126	echo "$(1)"; fi)
	127
	128	ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y)
	129	cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2))
	130	else
	131	cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\
	132	$(if $(call cc-option-sys,$1),$1,$2)))
	133	endif
e2211743	134
19a695f8 TR	135	# cc-version
	136	# Usage gcc-ver := $(call cc-version)
	137	cc-version = $(shell $(SHELL) $(SRCTREE)/tools/gcc-version.sh $(CC))
2051ff34	138	binutils-version = $(shell $(SHELL) $(SRCTREE)/tools/binutils-version.sh $(AS))
19a695f8	139
e2211743 WD	140	#
	141	# Include the make variables (CC, etc...)
	142	#
	143	AS = $(CROSS_COMPILE)as
7cb714a5 KR	144
	145	# Always use GNU ld
	146	LD = $(shell if $(CROSS_COMPILE)ld.bfd -v > /dev/null 2>&1; \
	147	then echo "$(CROSS_COMPILE)ld.bfd"; else echo "$(CROSS_COMPILE)ld"; fi;)
	148
e2211743 WD	149	CC = $(CROSS_COMPILE)gcc
	150	CPP = $(CC) -E
	151	AR = $(CROSS_COMPILE)ar
	152	NM = $(CROSS_COMPILE)nm
94a91e24	153	LDR = $(CROSS_COMPILE)ldr
e2211743 WD	154	STRIP = $(CROSS_COMPILE)strip
	155	OBJCOPY = $(CROSS_COMPILE)objcopy
	156	OBJDUMP = $(CROSS_COMPILE)objdump
	157	RANLIB = $(CROSS_COMPILE)RANLIB
bbb0b128	158	DTC = dtc
4ab64933	159	CHECK = sparse
e2211743	160
c4e5f52a WD	161	#########################################################################
	162
	163	# Load generated board configuration
	164	sinclude $(OBJTREE)/include/autoconf.mk
5e987ddf	165	sinclude $(OBJTREE)/include/config.mk
c4e5f52a	166
03b7004d PT	167	# Some architecture config.mk files need to know what CPUDIR is set to,
03b7004d PT	168	# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
8d1f2682 PT	169	# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
	170	# CPU-specific code.
	171	CPUDIR=arch/$(ARCH)/cpu/$(CPU)
	172	ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
	173	CPUDIR=arch/$(ARCH)/cpu
	174	endif
03b7004d	175
ea0364f1	176	sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
03b7004d PT	177	sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
03b7004d PT	178
c4e5f52a	179	ifdef SOC
03b7004d	180	sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
c4e5f52a WD	181	endif
	182	ifdef VENDOR
	183	BOARDDIR = $(VENDOR)/$(BOARD)
	184	else
	185	BOARDDIR = $(BOARD)
	186	endif
	187	ifdef BOARD
	188	sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
	189	endif
	190
	191	#########################################################################
	192
5968adc4 MF	193	# We don't actually use $(ARFLAGS) anywhere anymore, so catch people
	194	# who are porting old code to latest mainline but not updating $(AR).
	195	ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR)
e2211743	196	RELFLAGS= $(PLATFORM_RELFLAGS)
9acb626f	197	DBGFLAGS= -g # -DDEBUG
e2211743	198	OPTFLAGS= -Os #-fomit-frame-pointer
83b7e2a7	199
6dd652fa	200	OBJCFLAGS += --gap-fill=0xff
e2211743	201
b783edae WD	202	gccincdir := $(shell $(CC) -print-file-name=include)
b783edae WD	203
e2211743	204	CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
c1f5805a	205	-D__KERNEL__
c8f9c302 DS	206
	207	# Enable garbage collection of un-used sections for SPL
	208	ifeq ($(CONFIG_SPL_BUILD),y)
	209	CPPFLAGS += -ffunction-sections -fdata-sections
	210	LDFLAGS_FINAL += --gc-sections
	211	endif
	212
29ce737d SG	213	# TODO(sjg@chromium.org): Is this correct on Mac OS?
	214	ifdef CONFIG_FIT_SIGNATURE
	215	HOSTLIBS += -lssl -lcrypto
	216	endif
	217
14d0a02a WD	218	ifneq ($(CONFIG_SYS_TEXT_BASE),)
14d0a02a WD	219	CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
161b2af4	220	endif
f9328639	221
c8f9c302 DS	222	ifneq ($(CONFIG_SPL_TEXT_BASE),)
	223	CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE)
	224	endif
	225
94aebe6c SR	226	ifneq ($(CONFIG_SPL_PAD_TO),)
	227	CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO)
	228	endif
	229
ecddccd0 SR	230	ifneq ($(CONFIG_UBOOT_PAD_TO),)
	231	CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO)
	232	endif
	233
c8f9c302 DS	234	ifeq ($(CONFIG_SPL_BUILD),y)
	235	CPPFLAGS += -DCONFIG_SPL_BUILD
	236	endif
	237
5c1a7ea6 SG	238	# Does this architecture support generic board init?
	239	ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
	240	ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
fada9e20 SG	241	CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \
fada9e20 SG	242	Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
5c1a7ea6 SG	243	endif
	244	endif
	245
6c97a20d KG	246	ifneq ($(RESET_VECTOR_ADDRESS),)
	247	CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
	248	endif
	249
f9328639 MB	250	ifneq ($(OBJTREE),$(SRCTREE))
	251	CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
	252	endif
	253
	254	CPPFLAGS += -I$(TOPDIR)/include
53677ef1	255	CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
f9328639	256	-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
e2211743	257
e2211743	258	CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
d642c467 MV	259
	260	ifdef BUILD_TAG
	261	CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
e2211743 WD	262	endif
e2211743 WD	263
cca4e4ae WD	264	CFLAGS_SSP := $(call cc-option,-fno-stack-protector)
cca4e4ae WD	265	CFLAGS += $(CFLAGS_SSP)
6262e4e7 MF	266	# Some toolchains enable security related warning flags by default,
6262e4e7 MF	267	# but they don't make much sense in the u-boot world, so disable them.
cca4e4ae WD	268	CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \
	269	$(call cc-option,-Wno-format-security)
	270	CFLAGS += $(CFLAGS_WARN)
28eab0d7	271
4a30f1e8 TR	272	# Report stack usage if supported
	273	CFLAGS_STACK := $(call cc-option,-fstack-usage)
	274	CFLAGS += $(CFLAGS_STACK)
	275
5c2aeac5 SG	276	BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
	277
	278	ifeq ($(findstring examples/,$(BCURDIR)),)
	279	ifeq ($(CONFIG_SPL_BUILD),)
	280	ifdef FTRACE
	281	CFLAGS += -finstrument-functions -DFTRACE
	282	endif
	283	endif
	284	endif
	285
e11887a7 HS	286	# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
	287	# option to the assembler.
	288	AFLAGS_DEBUG :=
b62fa913	289
483a0cf8 MB	290	# turn jbsr into jsr for m68k
	291	ifeq ($(ARCH),m68k)
	292	ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
	293	AFLAGS_DEBUG := -Wa,-gstabs,-S
	294	endif
483a0cf8	295	endif
b62fa913	296
e2211743 WD	297	AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
e2211743 WD	298
8aba9dce	299	LDFLAGS += $(PLATFORM_LDFLAGS)
6dc1eceb	300	LDFLAGS_FINAL += -Bstatic
8aba9dce	301
6dc1eceb	302	LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL)
14d0a02a	303	ifneq ($(CONFIG_SYS_TEXT_BASE),)
8aba9dce	304	LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
161b2af4	305	endif
e2211743	306
c8f9c302 DS	307	LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL)
	308	ifneq ($(CONFIG_SPL_TEXT_BASE),)
	309	LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE)
	310	endif
	311
4ab64933 KP	312	# Linus' kernel sanity checking tool
	313	CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
	314	-Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF)
	315
e2211743 WD	316	# Location of a usable BFD library, where we define "usable" as
	317	# "built for ${HOST}, supports ${TARGET}". Sensible values are
	318	# - When cross-compiling: the root of the cross-environment
	319	# - Linux/ppc (native): /usr
	320	# - NetBSD/ppc (native): you lose ... (must extract these from the
	321	# binutils build directory, plus the native and U-Boot include
	322	# files don't like each other)
	323	#
	324	# So far, this is used only by tools/gdb/Makefile.
	325
4cda4378	326	ifeq ($(HOSTOS),darwin)
e2211743 WD	327	BFD_ROOT_DIR = /usr/local/tools
e2211743 WD	328	else
ea909b76 WD	329	ifeq ($(HOSTARCH),$(ARCH))
	330	# native
	331	BFD_ROOT_DIR = /usr
	332	else
e2211743 WD	333	#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
e2211743 WD	334	#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
e2211743 WD	335	BFD_ROOT_DIR = /opt/powerpc
e2211743 WD	336	endif
ea909b76	337	endif
e2211743 WD	338
	339	#########################################################################
	340
d984fed0	341	export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
434c51a5	342	AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
14d0a02a	343	export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
e2211743 WD	344
	345	#########################################################################
	346
5ec5529b	347	# Allow boards to use custom optimize flags on a per dir/file basis
326a6945 MF	348	ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR))
326a6945 MF	349	ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR))
47508843 SG	350	EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR))
	351	ALL_CFLAGS += $(EXTRA_CPPFLAGS)
	352
	353	# The _DEP version uses the $< file target (for dependency generation)
	354	# See rules.mk
	355	EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \
	356	$(CPPFLAGS_$(BCURDIR))
f9328639	357	$(obj)%.s: %.S
326a6945	358	$(CPP) $(ALL_AFLAGS) -o $@ $<
f9328639	359	$(obj)%.o: %.S
326a6945	360	$(CC) $(ALL_AFLAGS) -o $@ $< -c
f9328639	361	$(obj)%.o: %.c
4ab64933 KP	362	ifneq ($(CHECKSRC),0)
	363	$(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $<
	364	endif
326a6945	365	$(CC) $(ALL_CFLAGS) -o $@ $< -c
31f30c9e	366	$(obj)%.i: %.c
326a6945	367	$(CPP) $(ALL_CFLAGS) -o $@ $< -c
31f30c9e	368	$(obj)%.s: %.c
326a6945	369	$(CC) $(ALL_CFLAGS) -o $@ $< -c -S
f9328639	370
e2211743	371	#########################################################################
6d8962e8 SC	372
	373	# If the list of objects to link is empty, just create an empty built-in.o
	374	cmd_link_o_target = $(if $(strip $1),\
8aba9dce	375	$(LD) $(LDFLAGS) -r -o $@ $1,\
844f07d8	376	rm -f $@; $(AR) rcs $@ )
6d8962e8 SC	377
6d8962e8 SC	378	#########################################################################