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