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-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/ 68libs-y += drivers/ 69libs-y += dts/ 70libs-y += fs/ 71libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/ 72libs-$(CONFIG_SPL_NET_SUPPORT) += net/ 73 74head-y := $(addprefix $(obj)/,$(head-y)) 75libs-y := $(addprefix $(obj)/,$(libs-y)) 76u-boot-spl-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) 77 78libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 79 80# Add GCC lib 81ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 82PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 83PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC) 84endif 85 86u-boot-spl-init := $(head-y) 87u-boot-spl-main := $(libs-y) 88ifdef CONFIG_SPL_OF_PLATDATA 89u-boot-spl-platdata := $(obj)/dts/dt-platdata.o 90endif 91 92# Linker Script 93ifdef CONFIG_SPL_LDSCRIPT 94# need to strip off double quotes 95LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%)) 96endif 97 98ifeq ($(wildcard $(LDSCRIPT)),) 99 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds 100endif 101ifeq ($(wildcard $(LDSCRIPT)),) 102 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds 103endif 104ifeq ($(wildcard $(LDSCRIPT)),) 105 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds 106endif 107ifeq ($(wildcard $(LDSCRIPT)),) 108$(error could not find linker script) 109endif 110 111# Special flags for CPP when processing the linker script. 112# Pass the version down so we can handle backwards compatibility 113# on the fly. 114LDPPFLAGS += \ 115 -include $(srctree)/include/u-boot/u-boot.lds.h \ 116 -include $(objtree)/include/config.h \ 117 -DCPUDIR=$(CPUDIR) \ 118 $(shell $(LD) --version | \ 119 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 120 121quiet_cmd_mkimage = MKIMAGE $@ 122cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 123 $(if $(KBUILD_VERBOSE:1=), >/dev/null) 124 125MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE) 126 127MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE) 128 129MLO MLO.byteswap: $(obj)/u-boot-spl.bin FORCE 130 $(call if_changed,mkimage) 131 132ifeq ($(CONFIG_SYS_SOC),"at91") 133MKIMAGEFLAGS_boot.bin = -T atmelimage 134 135ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y) 136MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params) 137 138boot.bin: $(obj)/../tools/atmel_pmecc_params 139endif 140 141boot.bin: $(obj)/u-boot-spl.bin FORCE 142 $(call if_changed,mkimage) 143else 144ifdef CONFIG_ARCH_ZYNQ 145MKIMAGEFLAGS_boot.bin = -T zynqimage 146endif 147ifdef CONFIG_ARCH_ZYNQMP 148MKIMAGEFLAGS_boot.bin = -T zynqmpimage 149endif 150 151spl/boot.bin: $(obj)/u-boot-spl.bin FORCE 152 $(call if_changed,mkimage) 153endif 154 155ALL-y += $(obj)/$(SPL_BIN).bin $(obj)/$(SPL_BIN).cfg 156 157ifdef CONFIG_SAMSUNG 158ALL-y += $(obj)/$(BOARD)-spl.bin 159endif 160 161ifdef CONFIG_ARCH_SOCFPGA 162ALL-y += $(obj)/$(SPL_BIN).sfp 163endif 164 165ifdef CONFIG_SUNXI 166ALL-y += $(obj)/sunxi-spl.bin 167endif 168 169ifeq ($(CONFIG_SYS_SOC),"at91") 170ALL-y += boot.bin 171endif 172 173ALL-$(CONFIG_ARCH_ZYNQ) += $(obj)/boot.bin 174ALL-$(CONFIG_ARCH_ZYNQMP) += $(obj)/boot.bin 175 176all: $(ALL-y) 177 178quiet_cmd_cat = CAT $@ 179cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 180 181quiet_cmd_copy = COPY $@ 182 cmd_copy = cp $< $@ 183 184ifeq ($(CONFIG_SPL_OF_CONTROL)$(CONFIG_OF_SEPARATE)$(CONFIG_SPL_OF_PLATDATA),yy) 185$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN)-nodtb.bin $(obj)/$(SPL_BIN)-pad.bin \ 186 $(obj)/$(SPL_BIN).dtb FORCE 187 $(call if_changed,cat) 188 189$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-dtb.bin FORCE 190 $(call if_changed,copy) 191else 192$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN)-nodtb.bin FORCE 193 $(call if_changed,copy) 194endif 195 196# Create a file that pads from the end of u-boot-spl-nodtb.bin to bss_end 197$(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) 198 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ 199 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null; 200 201# Pass the original device tree file through fdtgrep twice. The first pass 202# removes any unwanted nodes (i.e. those which don't have the 203# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 204# pass removes various unused properties from the remaining nodes. 205# The output is typically a much smaller device tree file. 206quiet_cmd_fdtgrep = FDTGREP $@ 207 cmd_fdtgrep = $(objtree)/tools/fdtgrep -b u-boot,dm-pre-reloc -RT $< \ 208 -n /chosen -O dtb | \ 209 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 210 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 211 212$(obj)/$(SPL_BIN).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE 213 $(call if_changed,fdtgrep) 214 215quiet_cmd_cpp_cfg = CFG $@ 216cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 217 -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $< 218 219# If .u-boot.cfg.d is still present, then either: 220# a) The previous build used a Makefile that used if_changed rather than 221# if_changed_dep when building u-boot.cfg, and hence any later builds will 222# be unaware of the dependencies for u-boot.cfg. In this case, we must 223# delete u-boot.cfg to force it and .u-boot.cfg.cmd to be rebuilt the 224# correct way. 225# b) The previous build failed or was interrupted while building u-boot.cfg, 226# so deleting u-boot.cfg isn't going to cause any additional work. 227ifneq ($(wildcard $(obj)/.$(SPL_BIN).d),) 228 unused := $(shell rm -f $(obj)/$(SPL_BIN).cfg) 229endif 230$(obj)/$(SPL_BIN).cfg: include/config.h FORCE 231 $(call if_changed_dep,cpp_cfg) 232 233pythonpath = PYTHONPATH=tools 234 235quiet_cmd_dtocc = DTOC C $@ 236cmd_dtocc = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ platdata 237 238quiet_cmd_dtoch = DTOC H $@ 239cmd_dtoch = $(pythonpath) $(srctree)/tools/dtoc/dtoc -d $(obj)/$(SPL_BIN).dtb -o $@ struct 240 241quiet_cmd_plat = PLAT $@ 242cmd_plat = $(CC) $(c_flags) -c $< -o $@ 243 244$(obj)/dts/dt-platdata.o: $(obj)/dts/dt-platdata.c include/generated/dt-structs.h 245 $(call if_changed,plat) 246 247PHONY += dts_dir 248dts_dir: 249 $(shell [ -d $(obj)/dts ] || mkdir -p $(obj)/dts) 250 251include/generated/dt-structs.h: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 252 $(call if_changed,dtoch) 253 254$(obj)/dts/dt-platdata.c: $(obj)/$(SPL_BIN).dtb dts_dir dtoc 255 $(call if_changed,dtocc) 256 257dtoc: #$(objtree)/tools/_libfdt.so 258 259ifdef CONFIG_SAMSUNG 260ifdef CONFIG_VAR_SIZE_SPL 261VAR_SIZE_PARAM = --vs 262else 263VAR_SIZE_PARAM = 264endif 265$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin 266 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\ 267 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\ 268 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@ 269endif 270 271quiet_cmd_objcopy = OBJCOPY $@ 272cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 273 274OBJCOPYFLAGS_$(SPL_BIN)-nodtb.bin = $(SPL_OBJCFLAGS) -O binary 275 276$(obj)/$(SPL_BIN)-nodtb.bin: $(obj)/$(SPL_BIN) FORCE 277 $(call if_changed,objcopy) 278 279LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL) 280ifneq ($(CONFIG_SPL_TEXT_BASE),) 281LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 282endif 283 284MKIMAGEFLAGS_$(SPL_BIN).sfp = -T socfpgaimage 285$(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE 286 $(call if_changed,mkimage) 287 288quiet_cmd_mksunxiboot = MKSUNXI $@ 289cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@ 290$(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin FORCE 291 $(call if_changed,mksunxiboot) 292 293# Rule to link u-boot-spl 294# May be overridden by arch/$(ARCH)/config.mk 295quiet_cmd_u-boot-spl ?= LD $@ 296 cmd_u-boot-spl ?= (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \ 297 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \ 298 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) \ 299 $(patsubst $(obj)/%,%,$(u-boot-spl-platdata)) \ 300 --end-group \ 301 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN)) 302 303$(obj)/$(SPL_BIN): $(u-boot-spl-platdata) $(u-boot-spl-init) \ 304 $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE 305 $(call if_changed,u-boot-spl) 306 307$(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ; 308 309PHONY += $(u-boot-spl-dirs) 310$(u-boot-spl-dirs): $(u-boot-spl-platdata) 311 $(Q)$(MAKE) $(build)=$@ 312 313quiet_cmd_cpp_lds = LDS $@ 314cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 315 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $< 316 317$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE 318 $(call if_changed_dep,cpp_lds) 319 320# read all saved command lines 321 322targets := $(wildcard $(sort $(targets))) 323cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 324 325ifneq ($(cmd_files),) 326 $(cmd_files): ; # Do not try to update included dependency files 327 include $(cmd_files) 328endif 329 330PHONY += FORCE 331FORCE: 332 333# Declare the contents of the .PHONY variable as phony. We keep that 334# information in a variable so we can use it in if_changed and friends. 335.PHONY: $(PHONY) 336