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-$(CONFIG_TPL_LIBCOMMON_SUPPORT) += common/ cmd/ env/ 73libs-$(CONFIG_TPL_LIBGENERIC_SUPPORT) += lib/ 74else 75libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ cmd/ env/ 76libs-$(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_TPL_)OF_PLATDATA 102u-boot-spl-platdata := $(obj)/dts/dt-platdata.o 103endif 104 105# Linker Script 106# First test whether there's a linker-script for the specific stage defined... 107ifneq ($(CONFIG_$(SPL_TPL_)LDSCRIPT),) 108# need to strip off double quotes 109LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_$(SPL_TPL_)LDSCRIPT:"%"=%)) 110else 111# ...then fall back to the generic SPL linker-script 112ifneq ($(CONFIG_SPL_LDSCRIPT),) 113# need to strip off double quotes 114LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%)) 115endif 116endif 117 118ifeq ($(wildcard $(LDSCRIPT)),) 119 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds 120endif 121ifeq ($(wildcard $(LDSCRIPT)),) 122 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds 123endif 124ifeq ($(wildcard $(LDSCRIPT)),) 125 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds 126endif 127ifeq ($(wildcard $(LDSCRIPT)),) 128$(error could not find linker script) 129endif 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. 134LDPPFLAGS += \ 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 141MKIMAGEOUTPUT ?= /dev/null 142 143quiet_cmd_mkimage = MKIMAGE $@ 144cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 145 $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT)) 146 147MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE) 148 149MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE) 150 151MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE 152 $(call if_changed,mkimage) 153 154ifeq ($(CONFIG_SYS_SOC),"at91") 155MKIMAGEFLAGS_boot.bin = -T atmelimage 156 157ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y) 158MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params) 159 160boot.bin: $(obj)/../tools/atmel_pmecc_params 161endif 162 163boot.bin: $(obj)/u-boot-spl.bin FORCE 164 $(call if_changed,mkimage) 165else 166ifdef CONFIG_ARCH_ZYNQ 167MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) 168endif 169ifdef CONFIG_ARCH_ZYNQMP 170MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) 171endif 172 173spl/boot.bin: $(obj)/u-boot-spl.bin FORCE 174 $(call if_changed,mkimage) 175endif 176 177ALL-y += $(obj)/$(SPL_BIN).bin 178 179ifdef CONFIG_SAMSUNG 180ALL-y += $(obj)/$(BOARD)-spl.bin 181endif 182 183ifdef CONFIG_ARCH_SOCFPGA 184ALL-y += $(obj)/$(SPL_BIN).sfp 185endif 186 187ifdef CONFIG_ARCH_SUNXI 188ALL-y += $(obj)/sunxi-spl.bin 189 190ifdef CONFIG_NAND_SUNXI 191ALL-y += $(obj)/sunxi-spl-with-ecc.bin 192endif 193endif 194 195ifeq ($(CONFIG_SYS_SOC),"at91") 196ALL-y += boot.bin 197endif 198 199ALL-$(CONFIG_SPL_X86_16BIT_INIT) += $(obj)/u-boot-x86-16bit-spl.bin 200 201ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin 202ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin 203 204all: $(ALL-y) 205 206quiet_cmd_cat = CAT $@ 207cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 208 209quiet_cmd_copy = COPY $@ 210 cmd_copy = cp $< $@ 211 212ifeq ($(CONFIG_$(SPL_TPL_)OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_$(SPL_TPL_)OF_PLATDATA),yy) 213$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin \ 214 $(if $(CONFIG_SPL_SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \ 215 $(obj)/$(SPL_BIN).dtb FORCE 216 $(call if_changed,cat) 217 218$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE 219 $(call if_changed,copy) 220else 221$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE 222 $(call if_changed,copy) 223endif 224 225# Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end 226$(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) 227 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ 228 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null; 229 230# Pass the original device tree file through fdtgrep twice. The first pass 231# removes any unwanted nodes (i.e. those which don't have the 232# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 233# pass removes various unused properties from the remaining nodes. 234# The output is typically a much smaller device tree file. 235ifeq ($(CONFIG_TPL_BUILD),y) 236fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl 237else 238fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl 239endif 240quiet_cmd_fdtgrep = FDTGREP $@ 241 cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ 242 -n /chosen -n /config -O dtb | \ 243 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 244 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 245 246$(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE 247 $(call if_changed,fdtgrep) 248 249pythonpath = PYTHONPATH=tools 250 251quiet_cmd_dtocc = DTOC C $@ 252cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata 253 254quiet_cmd_dtoch = DTOC H $@ 255cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct 256 257quiet_cmd_plat = PLAT $@ 258cmd_plat = $(CC) $(c_flags) -c $< -o $@ 259 260$(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c \ 261 include/generated/dt-structs-gen.h 262 $(call if_changed,plat) 263 264PHONY += dts_dir 265dts_dir: 266 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts) 267 268include/generated/dt-structs-gen.h: $(obj)/$(SPL_BIN).dtb dts_dir checkdtoc 269 $(call if_changed,dtoch) 270 271$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir checkdtoc 272 $(call if_changed,dtocc) 273 274ifdef CONFIG_SAMSUNG 275ifdef CONFIG_VAR_SIZE_SPL 276VAR_SIZE_PARAM = --vs 277else 278VAR_SIZE_PARAM = 279endif 280$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin 281 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\ 282 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\ 283 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@ 284endif 285 286quiet_cmd_objcopy = OBJCOPY $@ 287cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 288 289OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary \ 290 $(if $(CONFIG_SPL_X86_16BIT_INIT),-R .start16 -R .resetvec) 291 292$(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE 293 $(call if_changed,objcopy) 294 295OBJCOPYFLAGS_u-boot-x86-16bit-spl.bin := -O binary -j .start16 -j .resetvec 296$(obj)/u-boot-x86-16bit-spl.bin: $(obj)/u-boot-spl FORCE 297 $(call if_changed,objcopy) 298 299LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL) 300 301# Avoid 'Not enough room for program headers' error on binutils 2.28 onwards. 302LDFLAGS_$(SPL_BIN) += $(call ld-option, --no-dynamic-linker) 303 304# First try the best-match (i.e. SPL_TEXT_BASE for SPL, TPL_TEXT_BASE for TPL) 305ifneq ($(CONFIG_$(SPL_TPL_)TEXT_BASE),) 306LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_$(SPL_TPL_)TEXT_BASE) 307else 308# And then fall back to just testing for SPL_TEXT_BASE, even if in TPL mode 309ifneq ($(CONFIG_SPL_TEXT_BASE),) 310LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 311endif 312endif 313 314MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage 315$(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE 316 $(call if_changed,mkimage) 317 318quiet_cmd_mksunxiboot = MKSUNXI $@ 319cmd_mksunxiboot = $(objtree)/tools/mksunxiboot \ 320 --default-dt $(CONFIG_DEFAULT_DEVICE_TREE) $< $@ 321$(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE 322 $(call if_changed,mksunxiboot) 323 324quiet_cmd_sunxi_spl_image_builder = SUNXI_SPL_IMAGE_BUILDER $@ 325cmd_sunxi_spl_image_builder = $(objtree)/tools/sunxi-spl-image-builder \ 326 -c $(CONFIG_NAND_SUNXI_SPL_ECC_STRENGTH)/$(CONFIG_NAND_SUNXI_SPL_ECC_SIZE) \ 327 -p $(CONFIG_SYS_NAND_PAGE_SIZE) \ 328 -o $(CONFIG_SYS_NAND_OOBSIZE) \ 329 -u $(CONFIG_NAND_SUNXI_SPL_USABLE_PAGE_SIZE) \ 330 -e $(CONFIG_SYS_NAND_BLOCK_SIZE) \ 331 -s -b $< $@ 332$(obj)/sunxi-spl-with-ecc.bin: $(obj)/sunxi-spl.bin 333 $(call if_changed,sunxi_spl_image_builder) 334 335# Rule to link u-boot-spl 336# May be overridden by arch/$(ARCH)/config.mk 337quiet_cmd_u-boot-spl ?= LD $@ 338 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \ 339 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \ 340 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \ 341 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \ 342 --end-group \ 343 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN)) 344 345$(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \ 346 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE 347 $(call if_changed,u-boot-spl) 348 349$(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ; 350 351PHONY += $(u-boot-spl-dirs) 352$(u-boot-spl-dirs): $(u-boot-spl-platdata) 353 $(Q)$(MAKE) $(build)=$@ 354 355quiet_cmd_cpp_lds = LDS $@ 356cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 357 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $< 358 359$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE 360 $(call if_changed_dep,cpp_lds) 361 362# read all saved command lines 363 364targets := $(wildcard $(sort $(targets))) 365cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 366 367ifneq ($(cmd_files),) 368 $(cmd_files): ; # Do not try to update included dependency files 369 include $(cmd_files) 370endif 371 372checkdtoc: tools 373 @if ! ( echo 'import libfdt' | ( PYTHONPATH=tools $(PYTHON) )); then \ 374 echo '*** dtoc needs the Python libfdt library. Either '; \ 375 echo '*** install it on your system, or try:'; \ 376 echo '***'; \ 377 echo '*** sudo apt-get install swig libpython-dev'; \ 378 echo '***'; \ 379 echo '*** to have U-Boot build its own version.'; \ 380 false; \ 381 fi 382 383PHONY += FORCE 384FORCE: 385 386# Declare the contents of the .PHONY variable as phony. We keep that 387# information in a variable so we can use it in if_changed and friends. 388.PHONY: $(PHONY) 389