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