1link-out-dir = $(out-dir)/core 2 3link-script-dummy = core/arch/arm/kernel/link_dummy.ld 4link-script = $(if $(wildcard $(platform-dir)/kern.ld.S), \ 5 $(platform-dir)/kern.ld.S, \ 6 core/arch/arm/kernel/kern.ld.S) 7link-script-pp = $(link-out-dir)/kern.ld 8link-script-dep = $(link-out-dir)/.kern.ld.d 9 10AWK = awk 11 12link-ldflags = $(LDFLAGS) 13ifeq ($(CFG_CORE_ASLR),y) 14link-ldflags += -pie -z notext -z norelro 15endif 16link-ldflags += -T $(link-script-pp) -Map=$(link-out-dir)/tee.map 17link-ldflags += --sort-section=alignment 18link-ldflags += --fatal-warnings 19link-ldflags += --gc-sections 20 21link-ldadd = $(LDADD) 22link-ldadd += $(libdeps) 23link-objs := $(filter-out $(out-dir)/core/arch/arm/kernel/link_dummies.o, \ 24 $(objs)) 25ldargs-tee.elf := $(link-ldflags) $(link-objs) $(link-out-dir)/version.o \ 26 $(link-ldadd) $(libgcccore) 27 28link-script-cppflags := \ 29 $(filter-out $(CPPFLAGS_REMOVE) $(cppflags-remove), \ 30 $(nostdinccore) $(CPPFLAGS) \ 31 $(addprefix -I,$(incdirscore) $(link-out-dir)) \ 32 $(cppflagscore)) 33 34ldargs-all_objs := -T $(link-script-dummy) --no-check-sections \ 35 $(link-objs) $(link-ldadd) $(libgcccore) 36cleanfiles += $(link-out-dir)/all_objs.o 37$(link-out-dir)/all_objs.o: $(objs) $(libdeps) $(MAKEFILE_LIST) 38 @$(cmd-echo-silent) ' LD $@' 39 $(q)$(LDcore) $(ldargs-all_objs) -o $@ 40 41cleanfiles += $(link-out-dir)/unpaged_entries.txt 42$(link-out-dir)/unpaged_entries.txt: $(link-out-dir)/all_objs.o 43 @$(cmd-echo-silent) ' GEN $@' 44 $(q)$(NMcore) $< | \ 45 $(AWK) '/ ____keep_pager/ { printf "-u%s ", $$3 }' > $@ 46 47unpaged-ldargs = -T $(link-script-dummy) --no-check-sections --gc-sections 48unpaged-ldadd := $(objs) $(link-ldadd) $(libgcccore) 49cleanfiles += $(link-out-dir)/unpaged.o 50$(link-out-dir)/unpaged.o: $(link-out-dir)/unpaged_entries.txt 51 @$(cmd-echo-silent) ' LD $@' 52 $(q)$(LDcore) $(unpaged-ldargs) \ 53 `cat $(link-out-dir)/unpaged_entries.txt` \ 54 $(unpaged-ldadd) -o $@ 55 56cleanfiles += $(link-out-dir)/text_unpaged.ld.S 57$(link-out-dir)/text_unpaged.ld.S: $(link-out-dir)/unpaged.o 58 @$(cmd-echo-silent) ' GEN $@' 59 $(q)$(READELFcore) -S -W $< | \ 60 ./scripts/gen_ld_sects.py .text. > $@ 61 62cleanfiles += $(link-out-dir)/rodata_unpaged.ld.S 63$(link-out-dir)/rodata_unpaged.ld.S: $(link-out-dir)/unpaged.o 64 @$(cmd-echo-silent) ' GEN $@' 65 $(q)$(READELFcore) -S -W $< | \ 66 ./scripts/gen_ld_sects.py .rodata. > $@ 67 68 69cleanfiles += $(link-out-dir)/init_entries.txt 70$(link-out-dir)/init_entries.txt: $(link-out-dir)/all_objs.o 71 @$(cmd-echo-silent) ' GEN $@' 72 $(q)$(NMcore) $< | \ 73 $(AWK) '/ ____keep_init/ { printf "-u%s ", $$3 }' > $@ 74 75init-ldargs := -T $(link-script-dummy) --no-check-sections --gc-sections 76init-ldadd := $(objs) $(link-out-dir)/version.o $(link-ldadd) $(libgcccore) 77cleanfiles += $(link-out-dir)/init.o 78$(link-out-dir)/init.o: $(link-out-dir)/init_entries.txt 79 $(call gen-version-o) 80 @$(cmd-echo-silent) ' LD $@' 81 $(q)$(LDcore) $(init-ldargs) \ 82 `cat $(link-out-dir)/init_entries.txt` \ 83 $(init-ldadd) -o $@ 84 85cleanfiles += $(link-out-dir)/text_init.ld.S 86$(link-out-dir)/text_init.ld.S: $(link-out-dir)/init.o 87 @$(cmd-echo-silent) ' GEN $@' 88 $(q)$(READELFcore) -S -W $< | \ 89 ./scripts/gen_ld_sects.py .text. > $@ 90 91cleanfiles += $(link-out-dir)/rodata_init.ld.S 92$(link-out-dir)/rodata_init.ld.S: $(link-out-dir)/init.o 93 @$(cmd-echo-silent) ' GEN $@' 94 $(q)$(READELFcore) -S -W $< | ./scripts/gen_ld_sects.py .rodata. > $@ 95 96-include $(link-script-dep) 97 98link-script-extra-deps += $(link-out-dir)/text_unpaged.ld.S 99link-script-extra-deps += $(link-out-dir)/rodata_unpaged.ld.S 100link-script-extra-deps += $(link-out-dir)/text_init.ld.S 101link-script-extra-deps += $(link-out-dir)/rodata_init.ld.S 102link-script-extra-deps += $(conf-file) 103cleanfiles += $(link-script-pp) $(link-script-dep) 104$(link-script-pp): $(link-script) $(link-script-extra-deps) 105 @$(cmd-echo-silent) ' CPP $@' 106 @mkdir -p $(dir $@) 107 $(q)$(CPPcore) -P -MT $@ -MD -MF $(link-script-dep) \ 108 $(link-script-cppflags) $< -o $@ 109 110define update-buildcount 111 @$(cmd-echo-silent) ' UPD $(1)' 112 $(q)if [ ! -f $(1) ]; then \ 113 mkdir -p $(dir $(1)); \ 114 echo 1 >$(1); \ 115 else \ 116 expr 0`cat $(1)` + 1 >$(1); \ 117 fi 118endef 119 120# filter-out to workaround objdump warning 121version-o-cflags = $(filter-out -g3,$(core-platform-cflags) \ 122 $(platform-cflags) $(cflagscore)) 123# SOURCE_DATE_EPOCH defined for reproducible builds 124ifneq ($(SOURCE_DATE_EPOCH),) 125DATE_STR = `date -u -d @$(SOURCE_DATE_EPOCH)` 126else 127DATE_STR = `date -u` 128endif 129BUILD_COUNT_STR = `cat $(link-out-dir)/.buildcount` 130CORE_CC_VERSION = `$(CCcore) -v 2>&1 | grep "version " | sed 's/ *$$//'` 131define gen-version-o 132 $(call update-buildcount,$(link-out-dir)/.buildcount) 133 @$(cmd-echo-silent) ' GEN $(link-out-dir)/version.o' 134 $(q)echo -e "const char core_v_str[] =" \ 135 "\"$(TEE_IMPL_VERSION) \"" \ 136 "\"($(CORE_CC_VERSION)) \"" \ 137 "\"#$(BUILD_COUNT_STR) \"" \ 138 "\"$(DATE_STR) \"" \ 139 "\"$(CFG_KERN_LINKER_ARCH)\";\n" \ 140 | $(CCcore) $(version-o-cflags) \ 141 -xc - -c -o $(link-out-dir)/version.o 142endef 143$(link-out-dir)/version.o: 144 $(call gen-version-o) 145 146-include $(link-out-dir)/.tee.elf.cmd 147define check-link-objs 148$(if $(strip $(filter-out $(link-objs), $(old-link-objs)) 149 $(filter-out $(old-link-objs), $(link-objs))), FORCE_LINK := FORCE) 150endef 151$(eval $(call check-link-objs)) 152 153all: $(link-out-dir)/tee.elf 154cleanfiles += $(link-out-dir)/tee.elf $(link-out-dir)/tee.map 155cleanfiles += $(link-out-dir)/version.o 156cleanfiles += $(link-out-dir)/.buildcount 157cleanfiles += $(link-out-dir)/.tee.elf.cmd 158$(link-out-dir)/tee.elf: $(link-objs) $(libdeps) $(link-script-pp) $(FORCE_LINK) 159 @echo "old-link-objs := $(link-objs)" >$(link-out-dir)/.tee.elf.cmd 160 @$(cmd-echo-silent) ' LD $@' 161 $(q)$(LDcore) $(ldargs-tee.elf) -o $@ 162 163all: $(link-out-dir)/tee.dmp 164cleanfiles += $(link-out-dir)/tee.dmp 165$(link-out-dir)/tee.dmp: $(link-out-dir)/tee.elf 166 @$(cmd-echo-silent) ' OBJDUMP $@' 167 $(q)$(OBJDUMPcore) -l -x -d $< > $@ 168 169cleanfiles += $(link-out-dir)/tee-pager.bin 170$(link-out-dir)/tee-pager.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 171 @echo Warning: $@ is deprecated 172 @$(cmd-echo-silent) ' GEN $@' 173 $(q)scripts/gen_tee_bin.py --input $< --out_tee_pager_bin $@ 174 175cleanfiles += $(link-out-dir)/tee-pageable.bin 176$(link-out-dir)/tee-pageable.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 177 @echo Warning: $@ is deprecated 178 @$(cmd-echo-silent) ' GEN $@' 179 $(q)scripts/gen_tee_bin.py --input $< --out_tee_pageable_bin $@ 180 181all: $(link-out-dir)/tee.bin 182cleanfiles += $(link-out-dir)/tee.bin 183$(link-out-dir)/tee.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 184 @$(cmd-echo-silent) ' GEN $@' 185 $(q)scripts/gen_tee_bin.py --input $< --out_tee_bin $@ 186 187all: $(link-out-dir)/tee-header_v2.bin 188cleanfiles += $(link-out-dir)/tee-header_v2.bin 189$(link-out-dir)/tee-header_v2.bin: $(link-out-dir)/tee.elf \ 190 scripts/gen_tee_bin.py 191 @$(cmd-echo-silent) ' GEN $@' 192 $(q)scripts/gen_tee_bin.py --input $< --out_header_v2 $@ 193 194all: $(link-out-dir)/tee-pager_v2.bin 195cleanfiles += $(link-out-dir)/tee-pager_v2.bin 196$(link-out-dir)/tee-pager_v2.bin: $(link-out-dir)/tee.elf scripts/gen_tee_bin.py 197 @$(cmd-echo-silent) ' GEN $@' 198 $(q)scripts/gen_tee_bin.py --input $< --out_pager_v2 $@ 199 200all: $(link-out-dir)/tee-pageable_v2.bin 201cleanfiles += $(link-out-dir)/tee-pageable_v2.bin 202$(link-out-dir)/tee-pageable_v2.bin: $(link-out-dir)/tee.elf \ 203 scripts/gen_tee_bin.py 204 @$(cmd-echo-silent) ' GEN $@' 205 $(q)scripts/gen_tee_bin.py --input $< --out_pageable_v2 $@ 206 207all: $(link-out-dir)/tee.symb_sizes 208cleanfiles += $(link-out-dir)/tee.symb_sizes 209$(link-out-dir)/tee.symb_sizes: $(link-out-dir)/tee.elf 210 @$(cmd-echo-silent) ' GEN $@' 211 $(q)$(NMcore) --print-size --reverse-sort --size-sort $< > $@ 212 213cleanfiles += $(link-out-dir)/tee.mem_usage 214ifneq ($(filter mem_usage,$(MAKECMDGOALS)),) 215mem_usage: $(link-out-dir)/tee.mem_usage 216 217$(link-out-dir)/tee.mem_usage: $(link-out-dir)/tee.elf 218 @$(cmd-echo-silent) ' GEN $@' 219 $(q)./scripts/mem_usage.py $< > $@ 220endif 221