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