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      1 # SPDX-License-Identifier: GPL-2.0+
      2 #
      3 # (C) Copyright 2000-2011
      4 # Wolfgang Denk, DENX Software Engineering, wd (a] denx.de.
      5 #
      6 # (C) Copyright 2011
      7 # Daniel Schwierzeck, daniel.schwierzeck (a] googlemail.com.
      8 #
      9 # (C) Copyright 2011
     10 # Texas Instruments Incorporated - http://www.ti.com/
     11 # Aneesh V <aneesh (a] ti.com>
     12 # Based on top-level Makefile.
     13 #
     14 
     15 src := $(obj)
     16 
     17 # Create output directory if not already present
     18 _dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
     19 
     20 include $(srctree)/scripts/Kbuild.include
     21 
     22 -include include/config/auto.conf
     23 -include $(obj)/include/autoconf.mk
     24 
     25 KBUILD_CPPFLAGS += -DCONFIG_SPL_BUILD
     26 ifeq ($(CONFIG_TPL_BUILD),y)
     27 KBUILD_CPPFLAGS += -DCONFIG_TPL_BUILD
     28 endif
     29 
     30 ifeq ($(CONFIG_TPL_BUILD),y)
     31 SPL_BIN := u-boot-tpl
     32 else
     33 SPL_BIN := u-boot-spl
     34 endif
     35 
     36 ifdef CONFIG_SPL_BUILD
     37 SPL_ := SPL_
     38 ifeq ($(CONFIG_TPL_BUILD),y)
     39 SPL_TPL_ := TPL_
     40 else
     41 SPL_TPL_ := SPL_
     42 endif
     43 else
     44 SPL_ :=
     45 SPL_TPL_ :=
     46 endif
     47 
     48 include $(srctree)/config.mk
     49 include $(srctree)/arch/$(ARCH)/Makefile
     50 
     51 include $(srctree)/scripts/Makefile.lib
     52 
     53 # Enable garbage collection of un-used sections for SPL
     54 KBUILD_CFLAGS += -ffunction-sections -fdata-sections
     55 LDFLAGS_FINAL += --gc-sections
     56 
     57 # FIX ME
     58 cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \
     59 							$(NOSTDINC_FLAGS)
     60 c_flags := $(KBUILD_CFLAGS) $(cpp_flags)
     61 
     62 HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n)
     63 
     64 libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/)
     65 libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/
     66 
     67 libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/
     68 libs-y += common/init/
     69 
     70 # Special handling for a few options which support SPL/TPL
     71 ifeq ($(CONFIG_TPL_BUILD),y)
     72 libs-$(CONFIG_TPL_LIBCOMMON_SUPPORT) += common/ cmd/ env/
     73 libs-$(CONFIG_TPL_LIBGENERIC_SUPPORT) += lib/
     74 else
     75 libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ cmd/ env/
     76 libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
     77 endif
     78 
     79 libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/
     80 libs-y += drivers/
     81 libs-$(CONFIG_SPL_USB_GADGET_SUPPORT) += drivers/usb/dwc3/
     82 libs-y += dts/
     83 libs-y += fs/
     84 libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/
     85 libs-$(CONFIG_SPL_NET_SUPPORT) += net/
     86 
     87 head-y		:= $(addprefix $(obj)/,$(head-y))
     88 libs-y		:= $(addprefix $(obj)/,$(libs-y))
     89 u-boot-spl-dirs	:= $(patsubst %/,%,$(filter %/, $(libs-y)))
     90 
     91 libs-y := $(patsubst %/, %/built-in.o, $(libs-y))
     92 
     93 # Add GCC lib
     94 ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y)
     95 PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a
     96 PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC)
     97 endif
     98 
     99 u-boot-spl-init := $(head-y)
    100 u-boot-spl-main := $(libs-y)
    101 ifdef CONFIG_$(SPL_TPL_)OF_PLATDATA
    102 u-boot-spl-platdata := $(obj)/dts/dt-platdata.o
    103 endif
    104 
    105 # Linker Script
    106 # First test whether there's a linker-script for the specific stage defined...
    107 ifneq ($(CONFIG_$(SPL_TPL_)LDSCRIPT),)
    108 # need to strip off double quotes
    109 LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_$(SPL_TPL_)LDSCRIPT:"%"=%))
    110 else
    111 # ...then fall back to the generic SPL linker-script
    112 ifneq ($(CONFIG_SPL_LDSCRIPT),)
    113 # need to strip off double quotes
    114 LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%))
    115 endif
    116 endif
    117 
    118 ifeq ($(wildcard $(LDSCRIPT)),)
    119 	LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds
    120 endif
    121 ifeq ($(wildcard $(LDSCRIPT)),)
    122 	LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds
    123 endif
    124 ifeq ($(wildcard $(LDSCRIPT)),)
    125 	LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds
    126 endif
    127 ifeq ($(wildcard $(LDSCRIPT)),)
    128 $(error could not find linker script)
    129 endif
    130 
    131 # Special flags for CPP when processing the linker script.
    132 # Pass the version down so we can handle backwards compatibility
    133 # on the fly.
    134 LDPPFLAGS += \
    135 	-include $(srctree)/include/u-boot/u-boot.lds.h \
    136 	-include $(objtree)/include/config.h \
    137 	-DCPUDIR=$(CPUDIR) \
    138 	$(shell $(LD) --version | \
    139 	  sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
    140 
    141 MKIMAGEOUTPUT ?= /dev/null
    142 
    143 quiet_cmd_mkimage = MKIMAGE $@
    144 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
    145 	>$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
    146 
    147 MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE)
    148 
    149 MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE)
    150 
    151 MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE
    152 	$(call if_changed,mkimage)
    153 
    154 ifeq ($(CONFIG_SYS_SOC),"at91")
    155 MKIMAGEFLAGS_boot.bin = -T atmelimage
    156 
    157 ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y)
    158 MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params)
    159 
    160 boot.bin: $(obj)/../tools/atmel_pmecc_params
    161 endif
    162 
    163 boot.bin: $(obj)/u-boot-spl.bin FORCE
    164 	$(call if_changed,mkimage)
    165 else
    166 ifdef CONFIG_ARCH_ZYNQ
    167 MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE)
    168 endif
    169 ifdef CONFIG_ARCH_ZYNQMP
    170 ifneq ($(CONFIG_PMUFW_INIT_FILE),"")
    171 spl/boot.bin: zynqmp-check-pmufw
    172 zynqmp-check-pmufw: FORCE
    173 	( cd $(srctree) && test -r $(CONFIG_PMUFW_INIT_FILE) ) \
    174 		|| ( echo "Cannot read $(CONFIG_PMUFW_INIT_FILE)" && false )
    175 endif
    176 MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) \
    177 	-n "$(shell cd $(srctree); readlink -f $(CONFIG_PMUFW_INIT_FILE))"
    178 endif
    179 
    180 spl/boot.bin: $(obj)/u-boot-spl.bin FORCE
    181 	$(call if_changed,mkimage)
    182 endif
    183 
    184 ALL-y	+= $(obj)/$(SPL_BIN).bin
    185 
    186 ifdef CONFIG_SAMSUNG
    187 ALL-y	+= $(obj)/$(BOARD)-spl.bin
    188 endif
    189 
    190 ifdef CONFIG_ARCH_SOCFPGA
    191 ALL-y	+= $(obj)/$(SPL_BIN).sfp
    192 endif
    193 
    194 ifdef CONFIG_ARCH_SUNXI
    195 ALL-y	+= $(obj)/sunxi-spl.bin
    196 
    197 ifdef CONFIG_NAND_SUNXI
    198 ALL-y	+= $(obj)/sunxi-spl-with-ecc.bin
    199 endif
    200 endif
    201 
    202 ifeq ($(CONFIG_SYS_SOC),"at91")
    203 ALL-y	+= boot.bin
    204 endif
    205 
    206 ALL-$(CONFIG_SPL_X86_16BIT_INIT) += $(obj)/u-boot-x86-16bit-spl.bin
    207 
    208 ALL-$(CONFIG_ARCH_ZYNQ)		+= $(obj)/boot.bin
    209 ALL-$(CONFIG_ARCH_ZYNQMP)	+= $(obj)/boot.bin
    210 
    211 all:	$(ALL-y)
    212 
    213 quiet_cmd_cat = CAT     $@
    214 cmd_cat = cat $(filter-out $(PHONY), $^) > $@
    215 
    216 quiet_cmd_copy = COPY    $@
    217       cmd_copy = cp $< $@
    218 
    219 ifneq ($(CONFIG_SPL_MULTI_DTB_FIT),y)
    220 FINAL_DTB_CONTAINER = $(obj)/$(SPL_BIN).dtb
    221 else ifeq ($(CONFIG_SPL_MULTI_DTB_FIT_LZO),y)
    222 FINAL_DTB_CONTAINER = $(obj)/$(SPL_BIN).multidtb.fit.lzo
    223 else ifeq ($(CONFIG_SPL_MULTI_DTB_FIT_GZIP),y)
    224 FINAL_DTB_CONTAINER = $(obj)/$(SPL_BIN).multidtb.fit.gz
    225 else
    226 FINAL_DTB_CONTAINER = $(obj)/$(SPL_BIN).multidtb.fit
    227 endif
    228 
    229 
    230 ifeq ($(CONFIG_$(SPL_TPL_)OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_$(SPL_TPL_)OF_PLATDATA),yy)
    231 $(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin \
    232 		$(if $(CONFIG_SPL_SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \
    233 		$(FINAL_DTB_CONTAINER)  FORCE
    234 	$(call if_changed,cat)
    235 
    236 $(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE
    237 	$(call if_changed,copy)
    238 else
    239 $(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE
    240 	$(call if_changed,copy)
    241 endif
    242 
    243 # Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end
    244 $(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN)
    245 	@bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \
    246 	dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null;
    247 
    248 $(obj)/$(SPL_BIN).dtb: dts/dt-spl.dtb FORCE
    249 	$(call if_changed,copy)
    250 
    251 pythonpath = PYTHONPATH=scripts/dtc/pylibfdt
    252 
    253 quiet_cmd_dtocc = DTOC C  $@
    254 cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata
    255 
    256 quiet_cmd_dtoch = DTOC H  $@
    257 cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct
    258 
    259 quiet_cmd_plat = PLAT    $@
    260 cmd_plat = $(CC) $(c_flags) -c $< -o $@
    261 
    262 $(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c \
    263 		include/generated/dt-structs-gen.h
    264 	$(call if_changed,plat)
    265 
    266 PHONY += dts_dir
    267 dts_dir:
    268 	$(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts)
    269 
    270 include/generated/dt-structs-gen.h: $(obj)/$(SPL_BIN).dtb dts_dir FORCE
    271 	$(call if_changed,dtoch)
    272 
    273 $(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir FORCE
    274 	$(call if_changed,dtocc)
    275 
    276 ifdef CONFIG_SAMSUNG
    277 ifdef CONFIG_VAR_SIZE_SPL
    278 VAR_SIZE_PARAM = --vs
    279 else
    280 VAR_SIZE_PARAM =
    281 endif
    282 $(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin
    283 	$(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\
    284 	$(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\
    285 	$(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@
    286 endif
    287 
    288 quiet_cmd_objcopy = OBJCOPY $@
    289 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
    290 
    291 OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary \
    292 		$(if $(CONFIG_SPL_X86_16BIT_INIT),-R .start16 -R .resetvec)
    293 
    294 $(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE
    295 	$(call if_changed,objcopy)
    296 
    297 OBJCOPYFLAGS_u-boot-x86-16bit-spl.bin := -O binary -j .start16 -j .resetvec
    298 $(obj)/u-boot-x86-16bit-spl.bin: $(obj)/u-boot-spl FORCE
    299 	$(call if_changed,objcopy)
    300 
    301 LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL)
    302 
    303 # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards.
    304 LDFLAGS_$(SPL_BIN) += $(call ld-option, --no-dynamic-linker)
    305 
    306 # First try the best-match (i.e. SPL_TEXT_BASE for SPL, TPL_TEXT_BASE for TPL)
    307 ifneq ($(CONFIG_$(SPL_TPL_)TEXT_BASE),)
    308 LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_$(SPL_TPL_)TEXT_BASE)
    309 else
    310 # And then fall back to just testing for SPL_TEXT_BASE, even if in TPL mode
    311 ifneq ($(CONFIG_SPL_TEXT_BASE),)
    312 LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE)
    313 endif
    314 endif
    315 
    316 ifdef CONFIG_TARGET_SOCFPGA_ARRIA10
    317 MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage_v1
    318 else
    319 MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage
    320 endif
    321 $(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE
    322 	$(call if_changed,mkimage)
    323 
    324 quiet_cmd_mksunxiboot = MKSUNXI $@
    325 cmd_mksunxiboot = $(objtree)/tools/mksunxiboot \
    326 			--default-dt $(CONFIG_DEFAULT_DEVICE_TREE) $< $@
    327 $(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE
    328 	$(call if_changed,mksunxiboot)
    329 
    330 quiet_cmd_sunxi_spl_image_builder = SUNXI_SPL_IMAGE_BUILDER $@
    331 cmd_sunxi_spl_image_builder = $(objtree)/tools/sunxi-spl-image-builder \
    332 				-c $(CONFIG_NAND_SUNXI_SPL_ECC_STRENGTH)/$(CONFIG_NAND_SUNXI_SPL_ECC_SIZE) \
    333 				-p $(CONFIG_SYS_NAND_PAGE_SIZE) \
    334 				-o $(CONFIG_SYS_NAND_OOBSIZE) \
    335 				-u $(CONFIG_NAND_SUNXI_SPL_USABLE_PAGE_SIZE) \
    336 				-e $(CONFIG_SYS_NAND_BLOCK_SIZE) \
    337 				-s -b $< $@
    338 $(obj)/sunxi-spl-with-ecc.bin: $(obj)/sunxi-spl.bin
    339 	$(call if_changed,sunxi_spl_image_builder)
    340 
    341 # Rule to link u-boot-spl
    342 # May be overridden by arch/$(ARCH)/config.mk
    343 quiet_cmd_u-boot-spl ?= LD      $@
    344       cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \
    345 		       $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \
    346 		       $(patsubst $(obj)/%,%,$(u-boot-spl-main))  \
    347 		       $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \
    348 		       --end-group \
    349 		       $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN))
    350 
    351 $(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \
    352 		$(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE
    353 	$(call if_changed,u-boot-spl)
    354 
    355 $(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ;
    356 
    357 PHONY += $(u-boot-spl-dirs)
    358 $(u-boot-spl-dirs): $(u-boot-spl-platdata)
    359 	$(Q)$(MAKE) $(build)=$@
    360 
    361 quiet_cmd_cpp_lds = LDS     $@
    362 cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \
    363 		-D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $<
    364 
    365 $(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE
    366 	$(call if_changed_dep,cpp_lds)
    367 
    368 # read all saved command lines
    369 
    370 targets := $(wildcard $(sort $(targets)))
    371 cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
    372 
    373 ifneq ($(cmd_files),)
    374   $(cmd_files): ;	# Do not try to update included dependency files
    375   include $(cmd_files)
    376 endif
    377 
    378 PHONY += FORCE
    379 FORCE:
    380 
    381 PHONY += dtbs
    382 dtbs:
    383 	$(Q)$(MAKE) $(build)=dts dtbs
    384 
    385 # Declare the contents of the .PHONY variable as phony.  We keep that
    386 # information in a variable so we can use it in if_changed and friends.
    387 .PHONY: $(PHONY)
    388 
    389 SHRUNK_ARCH_DTB = $(patsubst %,$(obj)/dts/%.dtb,$(subst ",,$(CONFIG_SPL_OF_LIST)))
    390 .SECONDEXPANSION:
    391 $(SHRUNK_ARCH_DTB): $$(patsubst $(obj)/dts/%, arch/$(ARCH)/dts/%, $$@)
    392 	$(call if_changed,fdtgrep)
    393 
    394 MKIMAGEFLAGS_$(SPL_BIN).multidtb.fit = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
    395 	-n "Multi DTB fit image for $(SPL_BIN)" -E \
    396 	$(patsubst %,-b %,$(SHRUNK_ARCH_DTB))
    397 
    398 $(obj)/$(SPL_BIN).multidtb.fit: /dev/null $(SHRUNK_ARCH_DTB) FORCE
    399 	$(call if_changed,mkimage)
    400 ifneq ($(SOURCE_DATE_EPOCH),)
    401 	touch -d @$(SOURCE_DATE_EPOCH) $(obj)/$(SPL_BIN).multidtb.fit
    402 	chmod 0600 $(obj)/$(SPL_BIN).multidtb.fit
    403 endif
    404 
    405 $(obj)/$(SPL_BIN).multidtb.fit.gz: $(obj)/$(SPL_BIN).multidtb.fit
    406 	@gzip -kf9 $< > $@
    407 
    408 $(obj)/$(SPL_BIN).multidtb.fit.lzo: $(obj)/$(SPL_BIN).multidtb.fit
    409 	@lzop -f9 $< > $@
    410