blob: e2b440d8b2d71ec869cf95dc15038bc88bbbed7b [file] [log] [blame]
wdenke2211742002-11-02 23:30:20 +00001#
Marian Balakowiczf9328632006-09-01 19:49:50 +02002# (C) Copyright 2000-2006
wdenke2211742002-11-02 23:30:20 +00003# 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
Wolfgang Denk844f07d2010-11-27 23:30:56 +010015# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
wdenke2211742002-11-02 23:30:20 +000016# 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
Marian Balakowiczf9328632006-09-01 19:49:50 +020026ifeq ($(CURDIR),$(SRCTREE))
Wolfgang Denk511d0c72006-10-09 00:42:01 +020027dir :=
Marian Balakowiczf9328632006-09-01 19:49:50 +020028else
29dir := $(subst $(SRCTREE)/,,$(CURDIR))
30endif
31
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +000032ifneq ($(OBJTREE),$(SRCTREE))
33# Create object files for SPL in a separate directory
34ifeq ($(CONFIG_SPL_BUILD),y)
35obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
36else
Marian Balakowiczf9328632006-09-01 19:49:50 +020037obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +000038endif
Marian Balakowiczf9328632006-09-01 19:49:50 +020039src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
40
41$(shell mkdir -p $(obj))
42else
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +000043# Create object files for SPL in a separate directory
44ifeq ($(CONFIG_SPL_BUILD),y)
45obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
46
47$(shell mkdir -p $(obj))
48else
Marian Balakowiczf9328632006-09-01 19:49:50 +020049obj :=
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +000050endif
Marian Balakowiczf9328632006-09-01 19:49:50 +020051src :=
52endif
53
wdenk592c5ca2003-06-21 00:17:24 +000054# clean the slate ...
55PLATFORM_RELFLAGS =
56PLATFORM_CPPFLAGS =
57PLATFORM_LDFLAGS =
58
wdenke2211742002-11-02 23:30:20 +000059#########################################################################
60
Scott Woodd984fed2009-11-04 18:41:41 -060061HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
62 $(HOSTCPPFLAGS)
63HOSTSTRIP = strip
64
65#
66# Mac OS X / Darwin's C preprocessor is Apple specific. It
67# generates numerous errors and warnings. We want to bypass it
Wolfgang Denk844f07d2010-11-27 23:30:56 +010068# and use GNU C's cpp. To do this we pass the -traditional-cpp
Scott Woodd984fed2009-11-04 18:41:41 -060069# option to the compiler. Note that the -traditional-cpp flag
70# DOES NOT have the same semantics as GNU C's flag, all it does
71# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
72#
73# Apple's linker is similar, thanks to the new 2 stage linking
74# multiple symbol definitions are treated as errors, hence the
75# -multiply_defined suppress option to turn off this error.
76#
77
Mike Frysinger4cda4372009-01-17 13:32:42 -050078ifeq ($(HOSTOS),darwin)
Andreas Biessmannc7da8c12010-05-22 13:17:21 +020079# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
80DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
81DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
82
Mike Frysingerf534c7c2010-08-03 19:17:38 -040083os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
84 $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
Andreas Biessmannc7da8c12010-05-22 13:17:21 +020085
86# Snow Leopards build environment has no longer restrictions as described above
Mike Frysingerf534c7c2010-08-03 19:17:38 -040087HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
88HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
89HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
wdenke2211742002-11-02 23:30:20 +000090else
91HOSTCC = gcc
92endif
Scott Woodd984fed2009-11-04 18:41:41 -060093
94ifeq ($(HOSTOS),cygwin)
95HOSTCFLAGS += -ansi
96endif
97
98# We build some files with extra pedantic flags to try to minimize things
99# that won't build on some weird host compiler -- though there are lots of
100# exceptions for files that aren't complaint.
101
102HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
103HOSTCFLAGS += -pedantic
wdenke2211742002-11-02 23:30:20 +0000104
105#########################################################################
Wolfgang Denk1820d4c2005-10-04 22:38:24 +0200106#
107# Option checker (courtesy linux kernel) to ensure
108# only supported compiler options are used
109#
110cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
Wolfgang Denk9b880bd2005-10-04 23:10:28 +0200111 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
wdenke2211742002-11-02 23:30:20 +0000112
113#
114# Include the make variables (CC, etc...)
115#
116AS = $(CROSS_COMPILE)as
117LD = $(CROSS_COMPILE)ld
118CC = $(CROSS_COMPILE)gcc
119CPP = $(CC) -E
120AR = $(CROSS_COMPILE)ar
121NM = $(CROSS_COMPILE)nm
Mike Frysinger94a91e22008-02-04 19:26:57 -0500122LDR = $(CROSS_COMPILE)ldr
wdenke2211742002-11-02 23:30:20 +0000123STRIP = $(CROSS_COMPILE)strip
124OBJCOPY = $(CROSS_COMPILE)objcopy
125OBJDUMP = $(CROSS_COMPILE)objdump
126RANLIB = $(CROSS_COMPILE)RANLIB
127
Wolfgang Denkc4e5f522008-05-03 22:25:00 +0200128#########################################################################
129
130# Load generated board configuration
131sinclude $(OBJTREE)/include/autoconf.mk
Joakim Tjernlund5e987dd2011-01-17 23:39:26 +0100132sinclude $(OBJTREE)/include/config.mk
Wolfgang Denkc4e5f522008-05-03 22:25:00 +0200133
Peter Tyser03b70042010-04-12 22:28:02 -0500134# Some architecture config.mk files need to know what CPUDIR is set to,
135# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
Peter Tyser8d1f2682010-04-12 22:28:09 -0500136# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
137# CPU-specific code.
138CPUDIR=arch/$(ARCH)/cpu/$(CPU)
139ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
140CPUDIR=arch/$(ARCH)/cpu
141endif
Peter Tyser03b70042010-04-12 22:28:02 -0500142
Peter Tyserea0364f2010-04-12 22:28:04 -0500143sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
Peter Tyser03b70042010-04-12 22:28:02 -0500144sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
145
Wolfgang Denkc4e5f522008-05-03 22:25:00 +0200146ifdef SOC
Peter Tyser03b70042010-04-12 22:28:02 -0500147sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
Wolfgang Denkc4e5f522008-05-03 22:25:00 +0200148endif
149ifdef VENDOR
150BOARDDIR = $(VENDOR)/$(BOARD)
151else
152BOARDDIR = $(BOARD)
153endif
154ifdef BOARD
155sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
156endif
157
158#########################################################################
159
Wolfgang Denk1954be62006-10-29 01:03:51 +0200160ifneq (,$(findstring s,$(MAKEFLAGS)))
161ARFLAGS = cr
162else
Wolfgang Denk2b208f52006-10-09 01:02:05 +0200163ARFLAGS = crv
Wolfgang Denk1954be62006-10-29 01:03:51 +0200164endif
wdenke2211742002-11-02 23:30:20 +0000165RELFLAGS= $(PLATFORM_RELFLAGS)
Heiko Schocher9acb6262006-04-20 08:42:42 +0200166DBGFLAGS= -g # -DDEBUG
wdenke2211742002-11-02 23:30:20 +0000167OPTFLAGS= -Os #-fomit-frame-pointer
Scott Wood83b7e2a2011-04-06 13:31:37 +0000168
wdenk6dd652f2003-06-19 23:40:20 +0000169OBJCFLAGS += --gap-fill=0xff
wdenke2211742002-11-02 23:30:20 +0000170
wdenkb783eda2003-06-25 22:26:29 +0000171gccincdir := $(shell $(CC) -print-file-name=include)
172
wdenke2211742002-11-02 23:30:20 +0000173CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
Mike Frysinger161b2af2008-01-28 05:28:50 -0500174 -D__KERNEL__
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +0000175
176# Enable garbage collection of un-used sections for SPL
177ifeq ($(CONFIG_SPL_BUILD),y)
178CPPFLAGS += -ffunction-sections -fdata-sections
179LDFLAGS_FINAL += --gc-sections
180endif
181
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200182ifneq ($(CONFIG_SYS_TEXT_BASE),)
183CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
Mike Frysinger161b2af2008-01-28 05:28:50 -0500184endif
Marian Balakowiczf9328632006-09-01 19:49:50 +0200185
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +0000186ifneq ($(CONFIG_SPL_TEXT_BASE),)
187CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE)
188endif
189
190ifeq ($(CONFIG_SPL_BUILD),y)
191CPPFLAGS += -DCONFIG_SPL_BUILD
192endif
193
Kumar Gala6c97a202009-09-09 11:40:41 -0500194ifneq ($(RESET_VECTOR_ADDRESS),)
195CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
196endif
197
Marian Balakowiczf9328632006-09-01 19:49:50 +0200198ifneq ($(OBJTREE),$(SRCTREE))
199CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
200endif
201
202CPPFLAGS += -I$(TOPDIR)/include
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200203CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
Marian Balakowiczf9328632006-09-01 19:49:50 +0200204 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
wdenke2211742002-11-02 23:30:20 +0000205
206ifdef BUILD_TAG
207CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
208 -DBUILD_TAG='"$(BUILD_TAG)"'
209else
210CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
211endif
212
Haavard Skinnemoen28eab0d2008-05-19 12:26:38 +0200213CFLAGS += $(call cc-option,-fno-stack-protector)
Mike Frysinger6262e4e2011-04-25 08:06:40 +0000214# Some toolchains enable security related warning flags by default,
215# but they don't make much sense in the u-boot world, so disable them.
216CFLAGS += $(call cc-option,-Wno-format-nonliteral)
217CFLAGS += $(call cc-option,-Wno-format-security)
Haavard Skinnemoen28eab0d2008-05-19 12:26:38 +0200218
Haavard Skinnemoene11887a2006-10-26 17:55:31 +0200219# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
220# option to the assembler.
221AFLAGS_DEBUG :=
Marian Balakowiczb62fa912006-05-17 12:18:48 +0200222
Marian Balakowicz483a0cf2006-05-09 11:28:36 +0200223# turn jbsr into jsr for m68k
224ifeq ($(ARCH),m68k)
225ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
226AFLAGS_DEBUG := -Wa,-gstabs,-S
227endif
Marian Balakowicz483a0cf2006-05-09 11:28:36 +0200228endif
Marian Balakowiczb62fa912006-05-17 12:18:48 +0200229
wdenke2211742002-11-02 23:30:20 +0000230AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
231
Nobuhiro Iwamatsu8aba9dc2011-01-06 10:23:54 +0900232LDFLAGS += $(PLATFORM_LDFLAGS)
Haiying Wang6dc1eceb2011-02-22 16:38:05 -0500233LDFLAGS_FINAL += -Bstatic
Nobuhiro Iwamatsu8aba9dc2011-01-06 10:23:54 +0900234
Haiying Wang6dc1eceb2011-02-22 16:38:05 -0500235LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL)
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200236ifneq ($(CONFIG_SYS_TEXT_BASE),)
Nobuhiro Iwamatsu8aba9dc2011-01-06 10:23:54 +0900237LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
Mike Frysinger161b2af2008-01-28 05:28:50 -0500238endif
wdenke2211742002-11-02 23:30:20 +0000239
Daniel Schwierzeckc8f9c302011-07-18 06:09:15 +0000240LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL)
241ifneq ($(CONFIG_SPL_TEXT_BASE),)
242LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE)
243endif
244
wdenke2211742002-11-02 23:30:20 +0000245# Location of a usable BFD library, where we define "usable" as
246# "built for ${HOST}, supports ${TARGET}". Sensible values are
247# - When cross-compiling: the root of the cross-environment
248# - Linux/ppc (native): /usr
249# - NetBSD/ppc (native): you lose ... (must extract these from the
250# binutils build directory, plus the native and U-Boot include
251# files don't like each other)
252#
253# So far, this is used only by tools/gdb/Makefile.
254
Mike Frysinger4cda4372009-01-17 13:32:42 -0500255ifeq ($(HOSTOS),darwin)
wdenke2211742002-11-02 23:30:20 +0000256BFD_ROOT_DIR = /usr/local/tools
257else
wdenkea909b72002-11-21 23:11:29 +0000258ifeq ($(HOSTARCH),$(ARCH))
259# native
260BFD_ROOT_DIR = /usr
261else
wdenke2211742002-11-02 23:30:20 +0000262#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
263#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
wdenke2211742002-11-02 23:30:20 +0000264BFD_ROOT_DIR = /opt/powerpc
265endif
wdenkea909b72002-11-21 23:11:29 +0000266endif
wdenke2211742002-11-02 23:30:20 +0000267
wdenke2211742002-11-02 23:30:20 +0000268#########################################################################
269
Scott Woodd984fed2009-11-04 18:41:41 -0600270export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
Peter Tyser434c51a2008-11-12 13:06:48 -0600271 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
Wolfgang Denk14d0a022010-10-07 21:51:12 +0200272export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
wdenke2211742002-11-02 23:30:20 +0000273
274#########################################################################
275
Mike Frysinger5ec55292009-06-14 09:33:00 -0400276# Allow boards to use custom optimize flags on a per dir/file basis
Peter Tyser89f39e12010-04-12 22:28:03 -0500277BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
Mike Frysinger326a6942010-12-15 07:17:31 -0500278ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR))
279ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR))
Marian Balakowiczf9328632006-09-01 19:49:50 +0200280$(obj)%.s: %.S
Mike Frysinger326a6942010-12-15 07:17:31 -0500281 $(CPP) $(ALL_AFLAGS) -o $@ $<
Marian Balakowiczf9328632006-09-01 19:49:50 +0200282$(obj)%.o: %.S
Mike Frysinger326a6942010-12-15 07:17:31 -0500283 $(CC) $(ALL_AFLAGS) -o $@ $< -c
Marian Balakowiczf9328632006-09-01 19:49:50 +0200284$(obj)%.o: %.c
Mike Frysinger326a6942010-12-15 07:17:31 -0500285 $(CC) $(ALL_CFLAGS) -o $@ $< -c
Mike Frysinger31f30c92009-06-14 11:03:48 -0400286$(obj)%.i: %.c
Mike Frysinger326a6942010-12-15 07:17:31 -0500287 $(CPP) $(ALL_CFLAGS) -o $@ $< -c
Mike Frysinger31f30c92009-06-14 11:03:48 -0400288$(obj)%.s: %.c
Mike Frysinger326a6942010-12-15 07:17:31 -0500289 $(CC) $(ALL_CFLAGS) -o $@ $< -c -S
Marian Balakowiczf9328632006-09-01 19:49:50 +0200290
wdenke2211742002-11-02 23:30:20 +0000291#########################################################################
Sebastien Carlier6d8962e2010-11-05 15:48:07 +0100292
293# If the list of objects to link is empty, just create an empty built-in.o
294cmd_link_o_target = $(if $(strip $1),\
Nobuhiro Iwamatsu8aba9dc2011-01-06 10:23:54 +0900295 $(LD) $(LDFLAGS) -r -o $@ $1,\
Wolfgang Denk844f07d2010-11-27 23:30:56 +0100296 rm -f $@; $(AR) rcs $@ )
Sebastien Carlier6d8962e2010-11-05 15:48:07 +0100297
298#########################################################################