2 # (C) Copyright 2000-2011
3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 # Daniel Schwierzeck, daniel.schwierzeck@googlemail.com.
9 # Texas Instruments Incorporated - http://www.ti.com/
10 # Aneesh V <aneesh@ti.com>
12 # SPDX-License-Identifier: GPL-2.0+
14 # Based on top-level Makefile.
19 # Create output directory if not already present
20 _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
22 include $(srctree)/scripts/Kbuild.include
24 -include include/config/auto.conf
25 -include $(obj)/include/autoconf.mk
27 KBUILD_CPPFLAGS += -DCONFIG_SPL_BUILD
28 ifeq ($(CONFIG_TPL_BUILD),y)
29 KBUILD_CPPFLAGS += -DCONFIG_TPL_BUILD
32 ifeq ($(CONFIG_TPL_BUILD),y)
38 include $(srctree)/config.mk
39 include $(srctree)/arch/$(ARCH)/Makefile
41 # Enable garbage collection of un-used sections for SPL
42 KBUILD_CFLAGS += -ffunction-sections -fdata-sections
43 LDFLAGS_FINAL += --gc-sections
46 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
48 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
50 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
52 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
53 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
55 libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/
56 libs-y += common/init/
57 libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ cmd/
58 libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/
62 libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
63 libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/
64 libs-$(CONFIG_SPL_NET_SUPPORT) += net/
66 head-y := $(addprefix $(obj)/,$(head-y))
67 libs-y := $(addprefix $(obj)/,$(libs-y))
68 u-boot-spl-dirs := $(patsubst %/,%,$(filter %/, $(libs-y)))
70 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
73 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
74 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
75 PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC)
78 u-boot-spl-init := $(head-y)
79 u-boot-spl-main := $(libs-y)
80 ifdef CONFIG_SPL_OF_PLATDATA
81 u-boot-spl-platdata := $(obj)/dts/dt-platdata.o
85 ifdef CONFIG_SPL_LDSCRIPT
86 # need to strip off double quotes
87 LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%))
90 ifeq ($(wildcard $(LDSCRIPT)),)
91 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds
93 ifeq ($(wildcard $(LDSCRIPT)),)
94 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds
96 ifeq ($(wildcard $(LDSCRIPT)),)
97 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds
99 ifeq ($(wildcard $(LDSCRIPT)),)
100 $(error could not find linker script)
103 # Special flags for CPP when processing the linker script.
104 # Pass the version down so we can handle backwards compatibility
107 -include $(srctree)/include/u-boot/u-boot.lds.h \
108 -include $(objtree)/include/config.h \
110 $(shell $(LD) --version | \
111 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
113 quiet_cmd_mkimage = MKIMAGE $@
114 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
115 $(if $(KBUILD_VERBOSE:1=), >/dev/null)
117 MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE)
119 MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE)
121 MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE
122 $(call if_changed,mkimage)
124 ifeq ($(CONFIG_SYS_SOC),"at91")
125 MKIMAGEFLAGS_boot.bin = -T atmelimage
127 ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y)
128 MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params)
130 boot.bin: $(obj)/../tools/atmel_pmecc_params
133 boot.bin: $(obj)/u-boot-spl.bin FORCE
134 $(call if_changed,mkimage)
136 ifdef CONFIG_ARCH_ZYNQ
137 MKIMAGEFLAGS_boot.bin = -T zynqimage
139 ifdef CONFIG_ARCH_ZYNQMP
140 MKIMAGEFLAGS_boot.bin = -T zynqmpimage
143 spl/boot.bin: $(obj)/u-boot-spl.bin FORCE
144 $(call if_changed,mkimage)
147 ALL-y += $(obj)/$(SPL_BIN).bin $(obj)/$(SPL_BIN).cfg
150 ALL-y += $(obj)/$(BOARD)-spl.bin
153 ifdef CONFIG_ARCH_SOCFPGA
154 ALL-y += $(obj)/$(SPL_BIN).sfp
158 ALL-y += $(obj)/sunxi-spl.bin
161 ifeq ($(CONFIG_SYS_SOC),"at91")
165 ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin
166 ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin
170 quiet_cmd_cat = CAT $@
171 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
173 quiet_cmd_copy = COPY $@
176 ifeq ($(CONFIG_SPL_OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),yy)
177 $(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin $(obj)/$(SPL_BIN)-pad.bin \
178 $(obj)/$(SPL_BIN).dtb FORCE
179 $(call if_changed,cat)
181 $(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE
182 $(call if_changed,copy)
184 $(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE
185 $(call if_changed,copy)
188 # Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end
189 $(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN)
190 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \
191 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null;
193 # Pass the original device tree file through fdtgrep twice. The first pass
194 # removes any unwanted nodes (i.e. those which don't have the
195 # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
196 # pass removes various unused properties from the remaining nodes.
197 # The output is typically a much smaller device tree file.
198 quiet_cmd_fdtgrep = FDTGREP $@
199 cmd_fdtgrep = $(objtree)/tools/fdtgrep -b u-boot,dm-pre-reloc -RT $< \
200 -n /chosen -O dtb | \
201 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
202 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
204 $(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
205 $(call if_changed,fdtgrep)
207 quiet_cmd_cpp_cfg = CFG $@
208 cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
209 -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $<
211 $(obj)/$(SPL_BIN).cfg: include/config.h FORCE
212 $(call if_changed,cpp_cfg)
214 pythonpath = PYTHONPATH=tools
216 quiet_cmd_dtocc = DTOC C $@
217 cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata
219 quiet_cmd_dtoch = DTOC H $@
220 cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct
222 quiet_cmd_plat = PLAT $@
223 cmd_plat = $(CC) $(c_flags) -c $< -o $@
225 $(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c include/generated/dt-structs.h
226 $(call if_changed,plat)
230 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts)
232 include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc
233 $(call if_changed,dtoch)
235 $(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc
236 $(call if_changed,dtocc)
238 dtoc: #$(objtree)/tools/_libfdt.so
241 ifdef CONFIG_VAR_SIZE_SPL
242 VAR_SIZE_PARAM = --vs
246 $(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin
247 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\
248 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\
249 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@
252 quiet_cmd_objcopy = OBJCOPY $@
253 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
255 OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary
257 $(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE
258 $(call if_changed,objcopy)
260 LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL)
261 ifneq ($(CONFIG_SPL_TEXT_BASE),)
262 LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
265 MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage
266 $(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE
267 $(call if_changed,mkimage)
269 quiet_cmd_mksunxiboot = MKSUNXI $@
270 cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@
271 $(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE
272 $(call if_changed,mksunxiboot)
274 # Rule to link u-boot-spl
275 # May be overridden by arch/$(ARCH)/config.mk
276 quiet_cmd_u-boot-spl ?= LD $@
277 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \
278 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \
279 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \
280 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \
282 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN))
284 $(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \
285 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE
286 $(call if_changed,u-boot-spl)
288 $(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ;
290 PHONY += $(u-boot-spl-dirs)
291 $(u-boot-spl-dirs): $(u-boot-spl-platdata)
292 $(Q)$(MAKE) $(build)=$@
294 quiet_cmd_cpp_lds = LDS $@
295 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
296 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
298 $(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE
299 $(call if_changed_dep,cpp_lds)
301 # read all saved command lines
303 targets := $(wildcard $(sort $(targets)))
304 cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
306 ifneq ($(cmd_files),)
307 $(cmd_files): ; # Do not try to update included dependency files
314 # Declare the contents of the .PHONY variable as phony. We keep that
315 # information in a variable so we can use it in if_changed and friends.