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 += $(obj)/sunxi-spl.bin 182endif 183 184ifeq ($(CONFIG_SYS_SOC),"at91") 185ALL-y += boot.bin 186endif 187 188ALL-$(CONFIG_SPL_X86_16BIT_INIT) += $(obj)/u-boot-x86-16bit-spl.bin 189 190ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin 191ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin 192 193all: $(ALL-y) 194 195quiet_cmd_cat = CAT $@ 196cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 197 198quiet_cmd_copy = COPY $@ 199 cmd_copy = cp $< $@ 200 201ifeq ($(CONFIG_SPL_OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),yy) 202$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin \ 203 $(if $(CONFIG_SPL_SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \ 204 $(obj)/$(SPL_BIN).dtb FORCE 205 $(call if_changed,cat) 206 207$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE 208 $(call if_changed,copy) 209else 210$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE 211 $(call if_changed,copy) 212endif 213 214# Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end 215$(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) 216 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ 217 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null; 218 219# Pass the original device tree file through fdtgrep twice. The first pass 220# removes any unwanted nodes (i.e. those which don't have the 221# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 222# pass removes various unused properties from the remaining nodes. 223# The output is typically a much smaller device tree file. 224ifeq ($(CONFIG_TPL_BUILD),y) 225fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl 226else 227fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl 228endif 229quiet_cmd_fdtgrep = FDTGREP $@ 230 cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ 231 -n /chosen -O dtb | \ 232 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 233 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 234 235$(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE 236 $(call if_changed,fdtgrep) 237 238pythonpath = PYTHONPATH=tools 239 240quiet_cmd_dtocc = DTOC C $@ 241cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata 242 243quiet_cmd_dtoch = DTOC H $@ 244cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct 245 246quiet_cmd_plat = PLAT $@ 247cmd_plat = $(CC) $(c_flags) -c $< -o $@ 248 249$(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c include/generated/dt-structs.h 250 $(call if_changed,plat) 251 252PHONY += dts_dir 253dts_dir: 254 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts) 255 256include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 257 $(call if_changed,dtoch) 258 259$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 260 $(call if_changed,dtocc) 261 262dtoc: #$(objtree)/tools/_libfdt.so 263 264ifdef CONFIG_SAMSUNG 265ifdef CONFIG_VAR_SIZE_SPL 266VAR_SIZE_PARAM = --vs 267else 268VAR_SIZE_PARAM = 269endif 270$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin 271 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\ 272 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\ 273 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@ 274endif 275 276quiet_cmd_objcopy = OBJCOPY $@ 277cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 278 279OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary \ 280 $(if $(CONFIG_SPL_X86_16BIT_INIT),-R .start16 -R .resetvec) 281 282$(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE 283 $(call if_changed,objcopy) 284 285OBJCOPYFLAGS_u-boot-x86-16bit-spl.bin := -O binary -j .start16 -j .resetvec 286$(obj)/u-boot-x86-16bit-spl.bin: $(obj)/u-boot-spl FORCE 287 $(call if_changed,objcopy) 288 289LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL) 290ifneq ($(CONFIG_SPL_TEXT_BASE),) 291LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 292endif 293 294MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage 295$(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE 296 $(call if_changed,mkimage) 297 298quiet_cmd_mksunxiboot = MKSUNXI $@ 299cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@ 300$(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE 301 $(call if_changed,mksunxiboot) 302 303# Rule to link u-boot-spl 304# May be overridden by arch/$(ARCH)/config.mk 305quiet_cmd_u-boot-spl ?= LD $@ 306 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \ 307 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \ 308 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \ 309 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \ 310 --end-group \ 311 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN)) 312 313$(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \ 314 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE 315 $(call if_changed,u-boot-spl) 316 317$(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ; 318 319PHONY += $(u-boot-spl-dirs) 320$(u-boot-spl-dirs): $(u-boot-spl-platdata) 321 $(Q)$(MAKE) $(build)=$@ 322 323quiet_cmd_cpp_lds = LDS $@ 324cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 325 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $< 326 327$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE 328 $(call if_changed_dep,cpp_lds) 329 330# read all saved command lines 331 332targets := $(wildcard $(sort $(targets))) 333cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 334 335ifneq ($(cmd_files),) 336 $(cmd_files): ; # Do not try to update included dependency files 337 include $(cmd_files) 338endif 339 340PHONY += FORCE 341FORCE: 342 343# Declare the contents of the .PHONY variable as phony. We keep that 344# information in a variable so we can use it in if_changed and friends. 345.PHONY: $(PHONY) 346