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) 48 49HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(srctree)/board/$(VENDOR)/common/Makefile),y,n) 50 51libs-y += $(if $(BOARDDIR),board/$(BOARDDIR)/) 52libs-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/ 53 54libs-$(CONFIG_SPL_FRAMEWORK) += common/spl/ 55libs-y += common/init/ 56libs-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/ 57libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/ 58libs-y += drivers/ 59libs-y += dts/ 60libs-y += fs/ 61libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/ 62libs-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/ 63libs-$(CONFIG_SPL_NET_SUPPORT) += net/ 64 65head-y := $(addprefix $(obj)/,$(head-y)) 66libs-y := $(addprefix $(obj)/,$(libs-y)) 67u-boot-spl-dirs := $(patsubst %/,%,$(filter %/, $(libs-y))) 68 69libs-y := $(patsubst %/, %/built-in.o, $(libs-y)) 70 71# Add GCC lib 72ifeq ($(CONFIG_USE_PRIVATE_LIBGCC),y) 73PLATFORM_LIBGCC = arch/$(ARCH)/lib/lib.a 74PLATFORM_LIBS := $(filter-out %/lib.a, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC) 75endif 76 77u-boot-spl-init := $(head-y) 78u-boot-spl-main := $(libs-y) 79 80# Linker Script 81ifdef CONFIG_SPL_LDSCRIPT 82# need to strip off double quotes 83LDSCRIPT := $(addprefix $(srctree)/,$(CONFIG_SPL_LDSCRIPT:"%"=%)) 84endif 85 86ifeq ($(wildcard $(LDSCRIPT)),) 87 LDSCRIPT := $(srctree)/board/$(BOARDDIR)/u-boot-spl.lds 88endif 89ifeq ($(wildcard $(LDSCRIPT)),) 90 LDSCRIPT := $(srctree)/$(CPUDIR)/u-boot-spl.lds 91endif 92ifeq ($(wildcard $(LDSCRIPT)),) 93 LDSCRIPT := $(srctree)/arch/$(ARCH)/cpu/u-boot-spl.lds 94endif 95ifeq ($(wildcard $(LDSCRIPT)),) 96$(error could not find linker script) 97endif 98 99# Special flags for CPP when processing the linker script. 100# Pass the version down so we can handle backwards compatibility 101# on the fly. 102LDPPFLAGS += \ 103 -include $(srctree)/include/u-boot/u-boot.lds.h \ 104 -include $(objtree)/include/config.h \ 105 -DCPUDIR=$(CPUDIR) \ 106 $(shell $(LD) --version | \ 107 sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') 108 109quiet_cmd_mkimage = MKIMAGE $@ 110cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \ 111 $(if $(KBUILD_VERBOSE:1=), >/dev/null) 112 113MKIMAGEFLAGS_MLO = -T omapimage -a $(CONFIG_SPL_TEXT_BASE) 114 115MKIMAGEFLAGS_MLO.byteswap = -T omapimage -n byteswap -a $(CONFIG_SPL_TEXT_BASE) 116 117MLO MLO.byteswap: $(obj)/u-boot-spl.bin 118 $(call if_changed,mkimage) 119 120MKIMAGEFLAGS_boot.bin = -T atmelimage 121 122ifeq ($(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER),y) 123MKIMAGEFLAGS_boot.bin += -n $(shell $(obj)/../tools/atmel_pmecc_params) 124 125boot.bin: $(obj)/../tools/atmel_pmecc_params 126endif 127 128boot.bin: $(obj)/u-boot-spl.bin 129 $(call if_changed,mkimage) 130 131ALL-y += $(obj)/$(SPL_BIN).bin $(obj)/$(SPL_BIN).cfg 132 133ifdef CONFIG_SPL_OF_CONTROL 134ALL-$(CONFIG_OF_SEPARATE) += $(obj)/$(SPL_BIN)-pad.bin $(obj)/$(SPL_BIN)-dtb.bin 135endif 136 137ifdef CONFIG_SAMSUNG 138ALL-y += $(obj)/$(BOARD)-spl.bin 139endif 140 141ifdef CONFIG_ARCH_SOCFPGA 142ALL-y += $(obj)/$(SPL_BIN)-dtb.sfp 143endif 144 145ifdef CONFIG_SUNXI 146ALL-y += $(obj)/sunxi-spl.bin 147endif 148 149ifeq ($(CONFIG_SYS_SOC),"at91") 150ALL-y += boot.bin 151endif 152 153all: $(ALL-y) 154 155quiet_cmd_cat = CAT $@ 156cmd_cat = cat $(filter-out $(PHONY), $^) > $@ 157 158$(obj)/$(SPL_BIN)-dtb.bin: $(obj)/$(SPL_BIN).bin $(obj)/$(SPL_BIN)-pad.bin \ 159 $(obj)/$(SPL_BIN).dtb FORCE 160 $(call if_changed,cat) 161 162# Create a file that pads from the end of u-boot-spl.bin to bss_end 163$(obj)/$(SPL_BIN)-pad.bin: $(obj)/$(SPL_BIN) 164 @bss_size_str=$(shell $(NM) $< | awk 'BEGIN {size = 0} /__bss_size/ {size = $$1} END {print "ibase=16; " toupper(size)}' | bc); \ 165 dd if=/dev/zero of=$@ bs=1 count=$${bss_size_str} 2>/dev/null; 166 167# Pass the original device tree file through fdtgrep twice. The first pass 168# removes any unwanted nodes (i.e. those which don't have the 169# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second 170# pass removes various unused properties from the remaining nodes. 171# The output is typically a much smaller device tree file. 172quiet_cmd_fdtgrep = FDTGREP $@ 173 cmd_fdtgrep = $(objtree)/tools/fdtgrep -b u-boot,dm-pre-reloc -RT $< \ 174 -n /chosen -O dtb | \ 175 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ 176 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) 177 178$(obj)/$(SPL_BIN).dtb: dts/dt.dtb 179 $(call cmd,fdtgrep) 180 181quiet_cmd_cpp_cfg = CFG $@ 182cmd_cpp_cfg = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 183 -DDO_DEPS_ONLY -D__ASSEMBLY__ -x assembler-with-cpp -P -dM -E -o $@ $< 184 185$(obj)/$(SPL_BIN).cfg: include/config.h 186 $(call if_changed,cpp_cfg) 187 188ifdef CONFIG_SAMSUNG 189ifdef CONFIG_VAR_SIZE_SPL 190VAR_SIZE_PARAM = --vs 191else 192VAR_SIZE_PARAM = 193endif 194$(obj)/$(BOARD)-spl.bin: $(obj)/u-boot-spl.bin 195 $(if $(wildcard $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl),\ 196 $(objtree)/spl/board/samsung/$(BOARD)/tools/mk$(BOARD)spl,\ 197 $(objtree)/tools/mkexynosspl) $(VAR_SIZE_PARAM) $< $@ 198endif 199 200quiet_cmd_objcopy = OBJCOPY $@ 201cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ 202 203OBJCOPYFLAGS_$(SPL_BIN).bin = $(SPL_OBJCFLAGS) -O binary 204 205$(obj)/$(SPL_BIN).bin: $(obj)/$(SPL_BIN) FORCE 206 $(call if_changed,objcopy) 207 208LDFLAGS_$(SPL_BIN) += -T u-boot-spl.lds $(LDFLAGS_FINAL) 209ifneq ($(CONFIG_SPL_TEXT_BASE),) 210LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 211endif 212 213ifdef CONFIG_ARCH_SOCFPGA 214MKIMAGEFLAGS_$(SPL_BIN)-dtb.sfp = -T socfpgaimage 215$(obj)/$(SPL_BIN)-dtb.sfp: $(obj)/$(SPL_BIN)-dtb.bin FORCE 216 $(call if_changed,mkimage) 217endif 218 219ifdef CONFIG_SUNXI 220quiet_cmd_mksunxiboot = MKSUNXI $@ 221cmd_mksunxiboot = $(objtree)/tools/mksunxiboot $< $@ 222$(obj)/sunxi-spl.bin: $(obj)/$(SPL_BIN).bin 223 $(call if_changed,mksunxiboot) 224endif 225 226quiet_cmd_u-boot-spl = LD $@ 227 cmd_u-boot-spl = (cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) \ 228 $(patsubst $(obj)/%,%,$(u-boot-spl-init)) --start-group \ 229 $(patsubst $(obj)/%,%,$(u-boot-spl-main)) --end-group \ 230 $(PLATFORM_LIBS) -Map $(SPL_BIN).map -o $(SPL_BIN)) 231 232$(obj)/$(SPL_BIN): $(u-boot-spl-init) $(u-boot-spl-main) $(obj)/u-boot-spl.lds FORCE 233 $(call if_changed,u-boot-spl) 234 235$(sort $(u-boot-spl-init) $(u-boot-spl-main)): $(u-boot-spl-dirs) ; 236 237PHONY += $(u-boot-spl-dirs) 238$(u-boot-spl-dirs): 239 $(Q)$(MAKE) $(build)=$@ 240 241quiet_cmd_cpp_lds = LDS $@ 242cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) -ansi \ 243 -D__ASSEMBLY__ -x assembler-with-cpp -P -o $@ $< 244 245$(obj)/u-boot-spl.lds: $(LDSCRIPT) FORCE 246 $(call if_changed_dep,cpp_lds) 247 248# read all saved command lines 249 250targets := $(wildcard $(sort $(targets))) 251cmd_files := $(wildcard $(obj)/.*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 252 253ifneq ($(cmd_files),) 254 $(cmd_files): ; # Do not try to update included dependency files 255 include $(cmd_files) 256endif 257 258PHONY += FORCE 259FORCE: 260 261# Declare the contents of the .PHONY variable as phony. We keep that 262# information in a variable so we can use it in if_changed and friends. 263.PHONY: $(PHONY) 264