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