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 38include $(srctree)/config.mk 39include $(srctree)/arch/$(ARCH)/Makefile 40 41# Enable garbage collection of un-used sections for SPL 42KBUILD_CFLAGS += -ffunction-sections -fdata-sections 43LDFLAGS_FINAL += --gc-sections 44 45# FIX ME 46cpp_flags := $(KBUILD_CPPFLAGS) $(PLATFORM_CPPFLAGS) $(UBOOTINCLUDE) \ 47 $(NOSTDINC_FLAGS) 48c_flags := $(KBUILD_CFLAGS) $(cpp_flags) 49 50HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) 51 52libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 53libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ 54 55libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/ 56libs-y += common/init/ 57 58# Special handling for a few options which support SPL/TPL 59ifeq ($(CONFIG_TPL_BUILD),y) 60libs-$(CONFIG_TPL_LIBCOMMON_SUPPORT) += common/ cmd/ 61libs-$(CONFIG_TPL_LIBGENERIC_SUPPORT) += lib/ 62else 63libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ cmd/ 64libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/ 65endif 66 67libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/ 68libs-y += drivers/ 69libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/dfu/ 70libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/usb/gadget/ 71libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/usb/gadget/udc/ 72libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/usb/dwc3/ 73libs-y += dts/ 74libs-y += fs/ 75libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/ 76libs-$(CONFIG_SPL_NET_SUPPORT) += net/ 77 78head-y := $(addprefix $(obj)/,$(head-y)) 79libs-y := $(addprefix $(obj)/,$(libs-y)) 80u-boot-spl-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) 81 82libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 83 84# Add GCC lib 85ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 86PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 87PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC) 88endif 89 90u-boot-spl-init := $(head-y) 91u-boot-spl-main := $(libs-y) 92ifdef CONFIG_SPL_OF_PLATDATA 93u-boot-spl-platdata := $(obj)/dts/dt-platdata.o 94endif 95 96# Linker Script 97ifdef CONFIG_SPL_LDSCRIPT 98# need to strip off double quotes 99LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%)) 100endif 101 102ifeq ($(wildcard $(LDSCRIPT)),) 103 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds 104endif 105ifeq ($(wildcard $(LDSCRIPT)),) 106 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds 107endif 108ifeq ($(wildcard $(LDSCRIPT)),) 109 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds 110endif 111ifeq ($(wildcard $(LDSCRIPT)),) 112$(error could not find linker script) 113endif 114 115# Special flags for CPP when processing the linker script. 116# Pass the version down so we can handle backwards compatibility 117# on the fly. 118LDPPFLAGS += \ 119 -include $(srctree)/include/u-boot/u-boot.lds.h \ 120 -include $(objtree)/include/config.h \ 121 -DCPUDIR=$(CPUDIR) \ 122 $(shell $(LD) --version | \ 123 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 124 125quiet_cmd_mkimage = MKIMAGE $@ 126cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 127 $(if $(KBUILD_VERBOSE:1=), >/dev/null) 128 129MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE) 130 131MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE) 132 133MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE 134 $(call if_changed,mkimage) 135 136ifeq ($(CONFIG_SYS_SOC),"at91") 137MKIMAGEFLAGS_boot.bin = -T atmelimage 138 139ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y) 140MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params) 141 142boot.bin: $(obj)/../tools/atmel_pmecc_params 143endif 144 145boot.bin: $(obj)/u-boot-spl.bin FORCE 146 $(call if_changed,mkimage) 147else 148ifdef CONFIG_ARCH_ZYNQ 149MKIMAGEFLAGS_boot.bin = -T zynqimage 150endif 151ifdef CONFIG_ARCH_ZYNQMP 152MKIMAGEFLAGS_boot.bin = -T zynqmpimage 153endif 154 155spl/boot.bin: $(obj)/u-boot-spl.bin FORCE 156 $(call if_changed,mkimage) 157endif 158 159ALL-y += $(obj)/$(SPL_BIN).bin 160 161ifdef CONFIG_SAMSUNG 162ALL-y += $(obj)/$(BOARD)-spl.bin 163endif 164 165ifdef CONFIG_ARCH_SOCFPGA 166ALL-y += $(obj)/$(SPL_BIN).sfp 167endif 168 169ifdef CONFIG_ARCH_SUNXI 170ALL-y += $(obj)/sunxi-spl.bin 171endif 172 173ifeq ($(CONFIG_SYS_SOC),"at91") 174ALL-y += boot.bin 175endif 176 177ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin 178ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin 179 180all: $(ALL-y) 181 182quiet_cmd_cat = CAT $@ 183cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 184 185quiet_cmd_copy = COPY $@ 186 cmd_copy = cp $< $@ 187 188ifeq ($(CONFIG_SPL_OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),yy) 189$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin $(obj)/$(SPL_BIN)-pad.bin \ 190 $(obj)/$(SPL_BIN).dtb FORCE 191 $(call if_changed,cat) 192 193$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE 194 $(call if_changed,copy) 195else 196$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE 197 $(call if_changed,copy) 198endif 199 200# Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end 201$(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) 202 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ 203 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null; 204 205# Pass the original device tree file through fdtgrep twice. The first pass 206# removes any unwanted nodes (i.e. those which don't have the 207# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 208# pass removes various unused properties from the remaining nodes. 209# The output is typically a much smaller device tree file. 210quiet_cmd_fdtgrep = FDTGREP $@ 211 cmd_fdtgrep = $(objtree)/tools/fdtgrep -b u-boot,dm-pre-reloc -RT $< \ 212 -n /chosen -O dtb | \ 213 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 214 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 215 216$(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE 217 $(call if_changed,fdtgrep) 218 219pythonpath = PYTHONPATH=tools 220 221quiet_cmd_dtocc = DTOC C $@ 222cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata 223 224quiet_cmd_dtoch = DTOC H $@ 225cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct 226 227quiet_cmd_plat = PLAT $@ 228cmd_plat = $(CC) $(c_flags) -c $< -o $@ 229 230$(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c include/generated/dt-structs.h 231 $(call if_changed,plat) 232 233PHONY += dts_dir 234dts_dir: 235 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts) 236 237include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 238 $(call if_changed,dtoch) 239 240$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 241 $(call if_changed,dtocc) 242 243dtoc: #$(objtree)/tools/_libfdt.so 244 245ifdef CONFIG_SAMSUNG 246ifdef CONFIG_VAR_SIZE_SPL 247VAR_SIZE_PARAM = --vs 248else 249VAR_SIZE_PARAM = 250endif 251$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin 252 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\ 253 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\ 254 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@ 255endif 256 257quiet_cmd_objcopy = OBJCOPY $@ 258cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 259 260OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary 261 262$(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE 263 $(call if_changed,objcopy) 264 265LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL) 266ifneq ($(CONFIG_SPL_TEXT_BASE),) 267LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 268endif 269 270MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage 271$(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE 272 $(call if_changed,mkimage) 273 274quiet_cmd_mksunxiboot = MKSUNXI $@ 275cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@ 276$(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE 277 $(call if_changed,mksunxiboot) 278 279# Rule to link u-boot-spl 280# May be overridden by arch/$(ARCH)/config.mk 281quiet_cmd_u-boot-spl ?= LD $@ 282 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \ 283 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \ 284 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \ 285 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \ 286 --end-group \ 287 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN)) 288 289$(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \ 290 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE 291 $(call if_changed,u-boot-spl) 292 293$(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ; 294 295PHONY += $(u-boot-spl-dirs) 296$(u-boot-spl-dirs): $(u-boot-spl-platdata) 297 $(Q)$(MAKE) $(build)=$@ 298 299quiet_cmd_cpp_lds = LDS $@ 300cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 301 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $< 302 303$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE 304 $(call if_changed_dep,cpp_lds) 305 306# read all saved command lines 307 308targets := $(wildcard $(sort $(targets))) 309cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 310 311ifneq ($(cmd_files),) 312 $(cmd_files): ; # Do not try to update included dependency files 313 include $(cmd_files) 314endif 315 316PHONY += FORCE 317FORCE: 318 319# Declare the contents of the .PHONY variable as phony. We keep that 320# information in a variable so we can use it in if_changed and friends. 321.PHONY: $(PHONY) 322