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