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 ifdef CONFIG_SPL_BUILD
44 include $(srctree)/config.mk
45 include $(srctree)/arch/$(ARCH)/Makefile
47 # Enable garbage collection of un-used sections for SPL
48 KBUILD_CFLAGS += -ffunction-sections -fdata-sections
49 LDFLAGS_FINAL += --gc-sections
52 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
54 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
56 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
58 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
59 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
61 libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/
62 libs-y += common/init/
64 # Special handling for a few options which support SPL/TPL
65 ifeq ($(CONFIG_TPL_BUILD),y)
66 libs-$(CONFIG_TPL_LIBCOMMON_SUPPORT) += common/ cmd/
67 libs-$(CONFIG_TPL_LIBGENERIC_SUPPORT) += lib/
69 libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ cmd/
70 libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
73 libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/
75 libs-$(CONFIG_SPL_USB_GADGET_SUPPORT) += drivers/usb/dwc3/
78 libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/
79 libs-$(CONFIG_SPL_NET_SUPPORT) += net/
81 head-y := $(addprefix $(obj)/,$(head-y))
82 libs-y := $(addprefix $(obj)/,$(libs-y))
83 u-boot-spl-dirs := $(patsubst %/,%,$(filter %/, $(libs-y)))
85 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
88 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
89 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
90 PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC)
93 u-boot-spl-init := $(head-y)
94 u-boot-spl-main := $(libs-y)
95 ifdef CONFIG_SPL_OF_PLATDATA
96 u-boot-spl-platdata := $(obj)/dts/dt-platdata.o
100 ifdef CONFIG_SPL_LDSCRIPT
101 # need to strip off double quotes
102 LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%))
105 ifeq ($(wildcard $(LDSCRIPT)),)
106 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds
108 ifeq ($(wildcard $(LDSCRIPT)),)
109 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds
111 ifeq ($(wildcard $(LDSCRIPT)),)
112 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds
114 ifeq ($(wildcard $(LDSCRIPT)),)
115 $(error could not find linker script)
118 # Special flags for CPP when processing the linker script.
119 # Pass the version down so we can handle backwards compatibility
122 -include $(srctree)/include/u-boot/u-boot.lds.h \
123 -include $(objtree)/include/config.h \
125 $(shell $(LD) --version | \
126 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
128 MKIMAGEOUTPUT ?= /dev/null
130 quiet_cmd_mkimage = MKIMAGE $@
131 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
132 $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))
134 MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE)
136 MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE)
138 MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE
139 $(call if_changed,mkimage)
141 ifeq ($(CONFIG_SYS_SOC),"at91")
142 MKIMAGEFLAGS_boot.bin = -T atmelimage
144 ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y)
145 MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params)
147 boot.bin: $(obj)/../tools/atmel_pmecc_params
150 boot.bin: $(obj)/u-boot-spl.bin FORCE
151 $(call if_changed,mkimage)
153 ifdef CONFIG_ARCH_ZYNQ
154 MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE)
156 ifdef CONFIG_ARCH_ZYNQMP
157 MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE)
160 spl/boot.bin: $(obj)/u-boot-spl.bin FORCE
161 $(call if_changed,mkimage)
164 ALL-y += $(obj)/$(SPL_BIN).bin
167 ALL-y += $(obj)/$(BOARD)-spl.bin
170 ifdef CONFIG_ARCH_SOCFPGA
171 ALL-y += $(obj)/$(SPL_BIN).sfp
174 ifdef CONFIG_ARCH_SUNXI
175 ALL-y += $(obj)/sunxi-spl.bin
178 ifeq ($(CONFIG_SYS_SOC),"at91")
182 ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin
183 ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin
187 quiet_cmd_cat = CAT $@
188 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
190 quiet_cmd_copy = COPY $@
193 ifeq ($(CONFIG_SPL_OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),yy)
194 $(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin \
195 $(if $(CONFIG_SPL_SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \
196 $(obj)/$(SPL_BIN).dtb FORCE
197 $(call if_changed,cat)
199 $(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE
200 $(call if_changed,copy)
202 $(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE
203 $(call if_changed,copy)
206 # Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end
207 $(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN)
208 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \
209 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null;
211 # Pass the original device tree file through fdtgrep twice. The first pass
212 # removes any unwanted nodes (i.e. those which don't have the
213 # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
214 # pass removes various unused properties from the remaining nodes.
215 # The output is typically a much smaller device tree file.
216 quiet_cmd_fdtgrep = FDTGREP $@
217 cmd_fdtgrep = $(objtree)/tools/fdtgrep -b u-boot,dm-pre-reloc -RT $< \
218 -n /chosen -O dtb | \
219 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
220 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
222 $(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
223 $(call if_changed,fdtgrep)
225 pythonpath = PYTHONPATH=tools
227 quiet_cmd_dtocc = DTOC C $@
228 cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata
230 quiet_cmd_dtoch = DTOC H $@
231 cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct
233 quiet_cmd_plat = PLAT $@
234 cmd_plat = $(CC) $(c_flags) -c $< -o $@
236 $(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c include/generated/dt-structs.h
237 $(call if_changed,plat)
241 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts)
243 include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc
244 $(call if_changed,dtoch)
246 $(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc
247 $(call if_changed,dtocc)
249 dtoc: #$(objtree)/tools/_libfdt.so
252 ifdef CONFIG_VAR_SIZE_SPL
253 VAR_SIZE_PARAM = --vs
257 $(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin
258 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\
259 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\
260 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@
263 quiet_cmd_objcopy = OBJCOPY $@
264 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
266 OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary
268 $(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE
269 $(call if_changed,objcopy)
271 LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL)
272 ifneq ($(CONFIG_SPL_TEXT_BASE),)
273 LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
276 MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage
277 $(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE
278 $(call if_changed,mkimage)
280 quiet_cmd_mksunxiboot = MKSUNXI $@
281 cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@
282 $(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE
283 $(call if_changed,mksunxiboot)
285 # Rule to link u-boot-spl
286 # May be overridden by arch/$(ARCH)/config.mk
287 quiet_cmd_u-boot-spl ?= LD $@
288 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \
289 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \
290 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \
291 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \
293 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN))
295 $(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \
296 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE
297 $(call if_changed,u-boot-spl)
299 $(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ;
301 PHONY += $(u-boot-spl-dirs)
302 $(u-boot-spl-dirs): $(u-boot-spl-platdata)
303 $(Q)$(MAKE) $(build)=$@
305 quiet_cmd_cpp_lds = LDS $@
306 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
307 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
309 $(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE
310 $(call if_changed_dep,cpp_lds)
312 # read all saved command lines
314 targets := $(wildcard $(sort $(targets)))
315 cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
317 ifneq ($(cmd_files),)
318 $(cmd_files): ; # Do not try to update included dependency files
325 # Declare the contents of the .PHONY variable as phony. We keep that
326 # information in a variable so we can use it in if_changed and friends.