blob: 7fc045375a0e992d13e324cafbe0a1291938adfc [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
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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
Marian Balakowiczf9328632006-09-01 19:49:50 +020026ifneq ($(OBJTREE),$(SRCTREE))
27ifeq ($(CURDIR),$(SRCTREE))
Wolfgang Denk511d0c72006-10-09 00:42:01 +020028dir :=
Marian Balakowiczf9328632006-09-01 19:49:50 +020029else
30dir := $(subst $(SRCTREE)/,,$(CURDIR))
31endif
32
33obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
34src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
35
36$(shell mkdir -p $(obj))
37else
38obj :=
39src :=
40endif
41
wdenk592c5ca2003-06-21 00:17:24 +000042# clean the slate ...
43PLATFORM_RELFLAGS =
44PLATFORM_CPPFLAGS =
45PLATFORM_LDFLAGS =
46
wdenke2211742002-11-02 23:30:20 +000047#########################################################################
48
Mike Frysinger4cda4372009-01-17 13:32:42 -050049ifeq ($(HOSTOS),darwin)
wdenke2211742002-11-02 23:30:20 +000050HOSTCC = cc
51else
52HOSTCC = gcc
53endif
54HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
55HOSTSTRIP = strip
56
57#########################################################################
Wolfgang Denk1820d4c2005-10-04 22:38:24 +020058#
59# Option checker (courtesy linux kernel) to ensure
60# only supported compiler options are used
61#
62cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
Wolfgang Denk9b880bd2005-10-04 23:10:28 +020063 > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
wdenke2211742002-11-02 23:30:20 +000064
65#
66# Include the make variables (CC, etc...)
67#
68AS = $(CROSS_COMPILE)as
69LD = $(CROSS_COMPILE)ld
70CC = $(CROSS_COMPILE)gcc
71CPP = $(CC) -E
72AR = $(CROSS_COMPILE)ar
73NM = $(CROSS_COMPILE)nm
Mike Frysinger94a91e22008-02-04 19:26:57 -050074LDR = $(CROSS_COMPILE)ldr
wdenke2211742002-11-02 23:30:20 +000075STRIP = $(CROSS_COMPILE)strip
76OBJCOPY = $(CROSS_COMPILE)objcopy
77OBJDUMP = $(CROSS_COMPILE)objdump
78RANLIB = $(CROSS_COMPILE)RANLIB
79
Wolfgang Denkc4e5f522008-05-03 22:25:00 +020080#########################################################################
81
82# Load generated board configuration
83sinclude $(OBJTREE)/include/autoconf.mk
84
85ifdef ARCH
86sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules
87endif
88ifdef CPU
89sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
90endif
91ifdef SOC
92sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
93endif
94ifdef VENDOR
95BOARDDIR = $(VENDOR)/$(BOARD)
96else
97BOARDDIR = $(BOARD)
98endif
99ifdef BOARD
100sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
101endif
102
103#########################################################################
104
Wolfgang Denk1954be62006-10-29 01:03:51 +0200105ifneq (,$(findstring s,$(MAKEFLAGS)))
106ARFLAGS = cr
107else
Wolfgang Denk2b208f52006-10-09 01:02:05 +0200108ARFLAGS = crv
Wolfgang Denk1954be62006-10-29 01:03:51 +0200109endif
wdenke2211742002-11-02 23:30:20 +0000110RELFLAGS= $(PLATFORM_RELFLAGS)
Heiko Schocher9acb6262006-04-20 08:42:42 +0200111DBGFLAGS= -g # -DDEBUG
wdenke2211742002-11-02 23:30:20 +0000112OPTFLAGS= -Os #-fomit-frame-pointer
wdenk6dd652f2003-06-19 23:40:20 +0000113ifndef LDSCRIPT
wdenk4aeb2512003-09-16 17:06:05 +0000114#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
Stefan Roese887e2ec2006-09-07 11:51:23 +0200115ifeq ($(CONFIG_NAND_U_BOOT),y)
116LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
117else
wdenke2211742002-11-02 23:30:20 +0000118LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
wdenk6dd652f2003-06-19 23:40:20 +0000119endif
Stefan Roese887e2ec2006-09-07 11:51:23 +0200120endif
wdenk6dd652f2003-06-19 23:40:20 +0000121OBJCFLAGS += --gap-fill=0xff
wdenke2211742002-11-02 23:30:20 +0000122
wdenkb783eda2003-06-25 22:26:29 +0000123gccincdir := $(shell $(CC) -print-file-name=include)
124
wdenke2211742002-11-02 23:30:20 +0000125CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
Mike Frysinger161b2af2008-01-28 05:28:50 -0500126 -D__KERNEL__
127ifneq ($(TEXT_BASE),)
128CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
129endif
Marian Balakowiczf9328632006-09-01 19:49:50 +0200130
131ifneq ($(OBJTREE),$(SRCTREE))
132CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
133endif
134
135CPPFLAGS += -I$(TOPDIR)/include
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200136CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
Marian Balakowiczf9328632006-09-01 19:49:50 +0200137 -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
wdenke2211742002-11-02 23:30:20 +0000138
139ifdef BUILD_TAG
140CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
141 -DBUILD_TAG='"$(BUILD_TAG)"'
142else
143CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
144endif
145
Haavard Skinnemoen28eab0d2008-05-19 12:26:38 +0200146CFLAGS += $(call cc-option,-fno-stack-protector)
147
wdenkc40b2952004-03-13 23:29:43 +0000148# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
149# this option have to be placed behind -Wall -- that's why it is here
150ifeq ($(ARCH),nios)
151ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
wdenke4cc71a2004-05-19 21:33:14 +0000152CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
wdenkc40b2952004-03-13 23:29:43 +0000153endif
154endif
155
Haavard Skinnemoene11887a2006-10-26 17:55:31 +0200156# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
157# option to the assembler.
158AFLAGS_DEBUG :=
Marian Balakowiczb62fa912006-05-17 12:18:48 +0200159
Marian Balakowicz483a0cf2006-05-09 11:28:36 +0200160# turn jbsr into jsr for m68k
161ifeq ($(ARCH),m68k)
162ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
163AFLAGS_DEBUG := -Wa,-gstabs,-S
164endif
Marian Balakowicz483a0cf2006-05-09 11:28:36 +0200165endif
Marian Balakowiczb62fa912006-05-17 12:18:48 +0200166
wdenke2211742002-11-02 23:30:20 +0000167AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
168
Mike Frysinger161b2af2008-01-28 05:28:50 -0500169LDFLAGS += -Bstatic -T $(LDSCRIPT) $(PLATFORM_LDFLAGS)
170ifneq ($(TEXT_BASE),)
171LDFLAGS += -Ttext $(TEXT_BASE)
172endif
wdenke2211742002-11-02 23:30:20 +0000173
174# Location of a usable BFD library, where we define "usable" as
175# "built for ${HOST}, supports ${TARGET}". Sensible values are
176# - When cross-compiling: the root of the cross-environment
177# - Linux/ppc (native): /usr
178# - NetBSD/ppc (native): you lose ... (must extract these from the
179# binutils build directory, plus the native and U-Boot include
180# files don't like each other)
181#
182# So far, this is used only by tools/gdb/Makefile.
183
Mike Frysinger4cda4372009-01-17 13:32:42 -0500184ifeq ($(HOSTOS),darwin)
wdenke2211742002-11-02 23:30:20 +0000185BFD_ROOT_DIR = /usr/local/tools
186else
wdenkea909b72002-11-21 23:11:29 +0000187ifeq ($(HOSTARCH),$(ARCH))
188# native
189BFD_ROOT_DIR = /usr
190else
wdenke2211742002-11-02 23:30:20 +0000191#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
192#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
wdenke2211742002-11-02 23:30:20 +0000193BFD_ROOT_DIR = /opt/powerpc
194endif
wdenkea909b72002-11-21 23:11:29 +0000195endif
wdenke2211742002-11-02 23:30:20 +0000196
Eran Libertyf046ccd2005-07-28 10:08:46 -0500197ifeq ($(PCI_CLOCK),PCI_66M)
198CFLAGS := $(CFLAGS) -DPCI_66M
199endif
200
wdenke2211742002-11-02 23:30:20 +0000201#########################################################################
202
Peter Tyser434c51a2008-11-12 13:06:48 -0600203export HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
204 AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
wdenke2211742002-11-02 23:30:20 +0000205export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
206
207#########################################################################
208
Mike Frysinger5ec55292009-06-14 09:33:00 -0400209# Allow boards to use custom optimize flags on a per dir/file basis
210BCURDIR := $(notdir $(CURDIR))
Marian Balakowiczf9328632006-09-01 19:49:50 +0200211$(obj)%.s: %.S
Mike Frysinger5ec55292009-06-14 09:33:00 -0400212 $(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $<
Marian Balakowiczf9328632006-09-01 19:49:50 +0200213$(obj)%.o: %.S
Mike Frysinger5ec55292009-06-14 09:33:00 -0400214 $(CC) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c
Marian Balakowiczf9328632006-09-01 19:49:50 +0200215$(obj)%.o: %.c
Mike Frysinger5ec55292009-06-14 09:33:00 -0400216 $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
Mike Frysinger31f30c92009-06-14 11:03:48 -0400217$(obj)%.i: %.c
218 $(CPP) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
219$(obj)%.s: %.c
220 $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c -S
Marian Balakowiczf9328632006-09-01 19:49:50 +0200221
wdenke2211742002-11-02 23:30:20 +0000222#########################################################################