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_ 40else 41SPL_ := 42endif 43 44include $(srctree)/config.mk 45include $(srctree)/arch/$(ARCH)/Makefile 46 47# Enable garbage collection of un-used sections for SPL 48KBUILD_CFLAGS += -ffunction-sections -fdata-sections 49LDFLAGS_FINAL += --gc-sections 50 51# FIX ME 52cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \ 53 $(NOSTDINC_FLAGS) 54c_flags := $(KBUILD_CFLAGS) $(cpp_flags) 55 56HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) 57 58libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 59libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ 60 61libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/ 62libs-y += common/init/ 63 64# Special handling for a few options which support SPL/TPL 65ifeq ($(CONFIG_TPL_BUILD),y) 66libs-$(CONFIG_TPL_LIBCOMMON_SUPPORT) += common/ cmd/ 67libs-$(CONFIG_TPL_LIBGENERIC_SUPPORT) += lib/ 68else 69libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ cmd/ 70libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/ 71endif 72 73libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/ 74libs-y += drivers/ 75libs-$(CONFIG_SPL_USB_GADGET_SUPPORT) += drivers/usb/dwc3/ 76libs-y += dts/ 77libs-y += fs/ 78libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/ 79libs-$(CONFIG_SPL_NET_SUPPORT) += net/ 80 81head-y := $(addprefix $(obj)/,$(head-y)) 82libs-y := $(addprefix $(obj)/,$(libs-y)) 83u-boot-spl-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) 84 85libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 86 87# Add GCC lib 88ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 89PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 90PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC) 91endif 92 93u-boot-spl-init := $(head-y) 94u-boot-spl-main := $(libs-y) 95ifdef CONFIG_SPL_OF_PLATDATA 96u-boot-spl-platdata := $(obj)/dts/dt-platdata.o 97endif 98 99# Linker Script 100ifdef CONFIG_SPL_LDSCRIPT 101# need to strip off double quotes 102LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%)) 103endif 104 105ifeq ($(wildcard $(LDSCRIPT)),) 106 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds 107endif 108ifeq ($(wildcard $(LDSCRIPT)),) 109 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds 110endif 111ifeq ($(wildcard $(LDSCRIPT)),) 112 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds 113endif 114ifeq ($(wildcard $(LDSCRIPT)),) 115$(error could not find linker script) 116endif 117 118# Special flags for CPP when processing the linker script. 119# Pass the version down so we can handle backwards compatibility 120# on the fly. 121LDPPFLAGS += \ 122 -include $(srctree)/include/u-boot/u-boot.lds.h \ 123 -include $(objtree)/include/config.h \ 124 -DCPUDIR=$(CPUDIR) \ 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') 127 128MKIMAGEOUTPUT ?= /dev/null 129 130quiet_cmd_mkimage = MKIMAGE $@ 131cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 132 $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT)) 133 134MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE) 135 136MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE) 137 138MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE 139 $(call if_changed,mkimage) 140 141ifeq ($(CONFIG_SYS_SOC),"at91") 142MKIMAGEFLAGS_boot.bin = -T atmelimage 143 144ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y) 145MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params) 146 147boot.bin: $(obj)/../tools/atmel_pmecc_params 148endif 149 150boot.bin: $(obj)/u-boot-spl.bin FORCE 151 $(call if_changed,mkimage) 152else 153ifdef CONFIG_ARCH_ZYNQ 154MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) 155endif 156ifdef CONFIG_ARCH_ZYNQMP 157MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE) 158endif 159 160spl/boot.bin: $(obj)/u-boot-spl.bin FORCE 161 $(call if_changed,mkimage) 162endif 163 164ALL-y += $(obj)/$(SPL_BIN).bin 165 166ifdef CONFIG_SAMSUNG 167ALL-y += $(obj)/$(BOARD)-spl.bin 168endif 169 170ifdef CONFIG_ARCH_SOCFPGA 171ALL-y += $(obj)/$(SPL_BIN).sfp 172endif 173 174ifdef CONFIG_ARCH_SUNXI 175ALL-y += $(obj)/sunxi-spl.bin 176endif 177 178ifeq ($(CONFIG_SYS_SOC),"at91") 179ALL-y += boot.bin 180endif 181 182ALL-$(CONFIG_SPL_X86_16BIT_INIT) += $(obj)/u-boot-x86-16bit-spl.bin 183 184ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin 185ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin 186 187all: $(ALL-y) 188 189quiet_cmd_cat = CAT $@ 190cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 191 192quiet_cmd_copy = COPY $@ 193 cmd_copy = cp $< $@ 194 195ifeq ($(CONFIG_SPL_OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),yy) 196$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin \ 197 $(if $(CONFIG_SPL_SEPARATE_BSS),,$(obj)/$(SPL_BIN)-pad.bin) \ 198 $(obj)/$(SPL_BIN).dtb FORCE 199 $(call if_changed,cat) 200 201$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE 202 $(call if_changed,copy) 203else 204$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE 205 $(call if_changed,copy) 206endif 207 208# Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end 209$(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) 210 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ 211 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null; 212 213# Pass the original device tree file through fdtgrep twice. The first pass 214# removes any unwanted nodes (i.e. those which don't have the 215# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 216# pass removes various unused properties from the remaining nodes. 217# The output is typically a much smaller device tree file. 218ifeq ($(CONFIG_TPL_BUILD),y) 219fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl 220else 221fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl 222endif 223quiet_cmd_fdtgrep = FDTGREP $@ 224 cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ 225 -n /chosen -O dtb | \ 226 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 227 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 228 229$(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE 230 $(call if_changed,fdtgrep) 231 232pythonpath = PYTHONPATH=tools 233 234quiet_cmd_dtocc = DTOC C $@ 235cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata 236 237quiet_cmd_dtoch = DTOC H $@ 238cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct 239 240quiet_cmd_plat = PLAT $@ 241cmd_plat = $(CC) $(c_flags) -c $< -o $@ 242 243$(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c include/generated/dt-structs.h 244 $(call if_changed,plat) 245 246PHONY += dts_dir 247dts_dir: 248 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts) 249 250include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 251 $(call if_changed,dtoch) 252 253$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 254 $(call if_changed,dtocc) 255 256dtoc: #$(objtree)/tools/_libfdt.so 257 258ifdef CONFIG_SAMSUNG 259ifdef CONFIG_VAR_SIZE_SPL 260VAR_SIZE_PARAM = --vs 261else 262VAR_SIZE_PARAM = 263endif 264$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin 265 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\ 266 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\ 267 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@ 268endif 269 270quiet_cmd_objcopy = OBJCOPY $@ 271cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 272 273OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary \ 274 $(if $(CONFIG_SPL_X86_16BIT_INIT),-R .start16 -R .resetvec) 275 276$(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE 277 $(call if_changed,objcopy) 278 279OBJCOPYFLAGS_u-boot-x86-16bit-spl.bin := -O binary -j .start16 -j .resetvec 280$(obj)/u-boot-x86-16bit-spl.bin: $(obj)/u-boot-spl FORCE 281 $(call if_changed,objcopy) 282 283LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL) 284ifneq ($(CONFIG_SPL_TEXT_BASE),) 285LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 286endif 287 288MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage 289$(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE 290 $(call if_changed,mkimage) 291 292quiet_cmd_mksunxiboot = MKSUNXI $@ 293cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@ 294$(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE 295 $(call if_changed,mksunxiboot) 296 297# Rule to link u-boot-spl 298# May be overridden by arch/$(ARCH)/config.mk 299quiet_cmd_u-boot-spl ?= LD $@ 300 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \ 301 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \ 302 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \ 303 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \ 304 --end-group \ 305 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN)) 306 307$(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \ 308 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE 309 $(call if_changed,u-boot-spl) 310 311$(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ; 312 313PHONY += $(u-boot-spl-dirs) 314$(u-boot-spl-dirs): $(u-boot-spl-platdata) 315 $(Q)$(MAKE) $(build)=$@ 316 317quiet_cmd_cpp_lds = LDS $@ 318cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 319 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $< 320 321$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE 322 $(call if_changed_dep,cpp_lds) 323 324# read all saved command lines 325 326targets := $(wildcard $(sort $(targets))) 327cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 328 329ifneq ($(cmd_files),) 330 $(cmd_files): ; # Do not try to update included dependency files 331 include $(cmd_files) 332endif 333 334PHONY += FORCE 335FORCE: 336 337# Declare the contents of the .PHONY variable as phony. We keep that 338# information in a variable so we can use it in if_changed and friends. 339.PHONY: $(PHONY) 340