xref: /rk3399_rockchip-uboot/config.mk (revision ceec4c8746567a0be70147f2c6f25e767347b0a0) 
1#
2# (C) Copyright 2000-2013
3# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4#
5# SPDX-License-Identifier:	GPL-2.0+
6#
7#########################################################################
8
9ifeq ($(CURDIR),$(SRCTREE))
10dir :=
11else
12dir := $(subst $(SRCTREE)/,,$(CURDIR))
13endif
14
15ifneq ($(OBJTREE),$(SRCTREE))
16# Create object files for SPL in a separate directory
17ifeq ($(CONFIG_SPL_BUILD),y)
18ifeq ($(CONFIG_TPL_BUILD),y)
19obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/)
20else
21obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
22endif
23else
24obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
25endif
26src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
27
28$(shell mkdir -p $(obj))
29else
30# Create object files for SPL in a separate directory
31ifeq ($(CONFIG_SPL_BUILD),y)
32ifeq ($(CONFIG_TPL_BUILD),y)
33obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/)
34else
35obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
36
37endif
38$(shell mkdir -p $(obj))
39else
40obj :=
41endif
42src :=
43endif
44
45# clean the slate ...
46PLATFORM_RELFLAGS =
47PLATFORM_CPPFLAGS =
48PLATFORM_LDFLAGS =
49
50#########################################################################
51#
52# Option checker, gcc version (courtesy linux kernel) to ensure
53# only supported compiler options are used
54#
55CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk
56CC_TEST_OFILE := $(OBJTREE)/include/generated/cc_test_file.o
57
58-include $(CC_OPTIONS_CACHE_FILE)
59
60cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \
61		if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \
62		> /dev/null 2>&1; then \
63		echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \
64		echo "$(1)"; fi)
65
66ifeq ($(CONFIG_CC_OPT_CACHE_DISABLE),y)
67cc-option = $(strip $(if $(call cc-option-sys,$1),$1,$2))
68else
69cc-option = $(strip $(if $(findstring $1,$(CC_OPTIONS)),$1,\
70		$(if $(call cc-option-sys,$1),$1,$2)))
71endif
72
73# cc-version
74# Usage gcc-ver := $(call cc-version)
75cc-version = $(shell $(CONFIG_SHELL) $(SRCTREE)/scripts/gcc-version.sh $(CC))
76binutils-version = $(shell $(CONFIG_SHELL) $(SRCTREE)/scripts/binutils-version.sh $(AS))
77dtc-version = $(shell $(CONFIG_SHELL) $(SRCTREE)/scripts/dtc-version.sh $(DTC))
78
79#########################################################################
80
81# Load generated board configuration
82ifeq ($(CONFIG_TPL_BUILD),y)
83# Include TPL autoconf
84sinclude $(OBJTREE)/include/tpl-autoconf.mk
85else
86ifeq ($(CONFIG_SPL_BUILD),y)
87# Include SPL autoconf
88sinclude $(OBJTREE)/include/spl-autoconf.mk
89else
90# Include normal autoconf
91sinclude $(OBJTREE)/include/autoconf.mk
92endif
93endif
94sinclude $(OBJTREE)/include/config.mk
95
96# Some architecture config.mk files need to know what CPUDIR is set to,
97# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
98# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
99# CPU-specific code.
100CPUDIR=arch/$(ARCH)/cpu/$(CPU)
101ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
102CPUDIR=arch/$(ARCH)/cpu
103endif
104
105sinclude $(TOPDIR)/arch/$(ARCH)/config.mk	# include architecture dependend rules
106sinclude $(TOPDIR)/$(CPUDIR)/config.mk		# include  CPU	specific rules
107
108ifdef	SOC
109sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk	# include  SoC	specific rules
110endif
111ifdef	VENDOR
112BOARDDIR = $(VENDOR)/$(BOARD)
113else
114BOARDDIR = $(BOARD)
115endif
116ifdef	BOARD
117sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk	# include board specific rules
118endif
119
120#########################################################################
121
122# We don't actually use $(ARFLAGS) anywhere anymore, so catch people
123# who are porting old code to latest mainline but not updating $(AR).
124ARFLAGS = $(error update your Makefile to use cmd_link_o_target and not AR)
125RELFLAGS= $(PLATFORM_RELFLAGS)
126DBGFLAGS= -g # -DDEBUG
127OPTFLAGS= -Os #-fomit-frame-pointer
128
129OBJCFLAGS += --gap-fill=0xff
130
131gccincdir := $(shell $(CC) -print-file-name=include)
132
133CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS)		\
134	-D__KERNEL__
135
136# Enable garbage collection of un-used sections for SPL
137ifeq ($(CONFIG_SPL_BUILD),y)
138CPPFLAGS += -ffunction-sections -fdata-sections
139LDFLAGS_FINAL += --gc-sections
140endif
141
142ifneq ($(CONFIG_SYS_TEXT_BASE),)
143CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
144endif
145
146ifeq ($(CONFIG_SPL_BUILD),y)
147CPPFLAGS += -DCONFIG_SPL_BUILD
148ifeq ($(CONFIG_TPL_BUILD),y)
149CPPFLAGS += -DCONFIG_TPL_BUILD
150endif
151endif
152
153# Does this architecture support generic board init?
154ifeq ($(__HAVE_ARCH_GENERIC_BOARD),)
155ifneq ($(CONFIG_SYS_GENERIC_BOARD),)
156CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \
157Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file)
158endif
159endif
160
161ifneq ($(OBJTREE),$(SRCTREE))
162CPPFLAGS += -I$(OBJTREE)/include
163endif
164
165CPPFLAGS += -I$(TOPDIR)/include -I$(SRCTREE)/arch/$(ARCH)/include
166CPPFLAGS += -fno-builtin -ffreestanding -nostdinc	\
167	-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
168
169CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
170
171ifdef BUILD_TAG
172CFLAGS += -DBUILD_TAG='"$(BUILD_TAG)"'
173endif
174
175CFLAGS_SSP := $(call cc-option,-fno-stack-protector)
176CFLAGS += $(CFLAGS_SSP)
177# Some toolchains enable security related warning flags by default,
178# but they don't make much sense in the u-boot world, so disable them.
179CFLAGS_WARN := $(call cc-option,-Wno-format-nonliteral) \
180	       $(call cc-option,-Wno-format-security)
181CFLAGS += $(CFLAGS_WARN)
182
183# Report stack usage if supported
184CFLAGS_STACK := $(call cc-option,-fstack-usage)
185CFLAGS += $(CFLAGS_STACK)
186
187BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
188
189ifeq ($(findstring examples/,$(BCURDIR)),)
190ifeq ($(CONFIG_SPL_BUILD),)
191ifdef FTRACE
192CFLAGS += -finstrument-functions -DFTRACE
193endif
194endif
195endif
196
197# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
198# option to the assembler.
199AFLAGS_DEBUG :=
200
201# turn jbsr into jsr for m68k
202ifeq ($(ARCH),m68k)
203ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
204AFLAGS_DEBUG := -Wa,-gstabs,-S
205endif
206endif
207
208AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
209
210LDFLAGS += $(PLATFORM_LDFLAGS)
211LDFLAGS_FINAL += -Bstatic
212
213LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL)
214ifneq ($(CONFIG_SYS_TEXT_BASE),)
215LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE)
216endif
217
218LDFLAGS_$(SPL_BIN) += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL)
219ifneq ($(CONFIG_SPL_TEXT_BASE),)
220LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
221endif
222
223#########################################################################
224
225export	CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
226