1link-script$(sm) = $(ta-dev-kit-dir$(sm))/src/ta.ld.S 2link-script-pp$(sm) = $(link-out-dir$(sm))/ta.lds 3link-script-dep$(sm) = $(link-out-dir$(sm))/.ta.ld.d 4 5SIGN_ENC ?= $(PYTHON3) $(ta-dev-kit-dir$(sm))/scripts/sign_encrypt.py 6TA_SIGN_KEY ?= $(ta-dev-kit-dir$(sm))/keys/default_ta.pem 7 8ifeq ($(CFG_ENCRYPT_TA),y) 9# Default TA encryption key is a dummy key derived from default 10# hardware unique key (an array of 16 zero bytes) to demonstrate 11# usage of REE-FS TAs encryption feature. 12# 13# Note that a user of this TA encryption feature needs to provide 14# encryption key and its handling corresponding to their security 15# requirements. 16TA_ENC_KEY ?= 'b64d239b1f3c7d3b06506229cd8ff7c8af2bb4db2168621ac62c84948468c4f4' 17endif 18 19all: $(link-out-dir$(sm))/$(user-ta-uuid).dmp \ 20 $(link-out-dir$(sm))/$(user-ta-uuid).stripped.elf \ 21 $(link-out-dir$(sm))/$(user-ta-uuid).ta 22cleanfiles += $(link-out-dir$(sm))/$(user-ta-uuid).elf 23cleanfiles += $(link-out-dir$(sm))/$(user-ta-uuid).dmp 24cleanfiles += $(link-out-dir$(sm))/$(user-ta-uuid).map 25cleanfiles += $(link-out-dir$(sm))/$(user-ta-uuid).stripped.elf 26cleanfiles += $(link-out-dir$(sm))/$(user-ta-uuid).ta 27cleanfiles += $(link-script-pp$(sm)) $(link-script-dep$(sm)) 28 29link-ldflags = -e__ta_entry -pie 30link-ldflags += -T $(link-script-pp$(sm)) 31link-ldflags += -Map=$(link-out-dir$(sm))/$(user-ta-uuid).map 32link-ldflags += --sort-section=alignment 33link-ldflags += -z max-page-size=4096 # OP-TEE always uses 4K alignment 34ifeq ($(sm)-$(CFG_TA_BTI),ta_arm64-y) 35link-ldflags += $(call ld-option,-z force-bti) --fatal-warnings 36endif 37link-ldflags += --as-needed # Do not add dependency on unused shlib 38link-ldflags += $(link-ldflags$(sm)) 39 40$(link-out-dir$(sm))/dyn_list: FORCE 41 @$(cmd-echo-silent) ' GEN $@' 42 $(q)mkdir -p $(dir $@) 43 $(q)echo "{" >$@.tmp 44 $(q)echo "__elf_phdr_info;" >>$@.tmp 45ifeq ($(CFG_FTRACE_SUPPORT),y) 46 $(q)echo "__ftrace_info;" >>$@.tmp 47endif 48 $(q)echo "trace_ext_prefix;" >>$@.tmp 49 $(q)echo "trace_level;" >>$@.tmp 50 $(q)echo "ta_head;" >>$@.tmp 51 $(q)echo "};" >>$@.tmp 52 $(q)$(call mv-if-changed,$@.tmp,$@) 53link-ldflags += --dynamic-list $(link-out-dir$(sm))/dyn_list 54dynlistdep = $(link-out-dir$(sm))/dyn_list 55cleanfiles += $(link-out-dir$(sm))/dyn_list 56 57link-ldadd = $(user-ta-ldadd) $(addprefix -L,$(libdirs)) 58link-ldadd += --start-group 59link-ldadd += $(addprefix -l,$(libnames)) 60ifneq (,$(filter %.cpp,$(srcs))) 61link-ldflags += --eh-frame-hdr 62link-ldadd += $(libstdc++$(sm)) $(libgcc_eh$(sm)) 63endif 64link-ldadd += --end-group 65 66link-ldadd-after-libgcc += $(addprefix -l,$(libnames-after-libgcc)) 67 68ldargs-$(user-ta-uuid).elf := $(link-ldflags) $(objs) $(link-ldadd) \ 69 $(libgcc$(sm)) $(link-ldadd-after-libgcc) 70 71link-script-cppflags-$(sm) := \ 72 $(filter-out $(CPPFLAGS_REMOVE) $(cppflags-remove), \ 73 $(nostdinc$(sm)) $(CPPFLAGS) \ 74 $(addprefix -I,$(incdirs$(sm)) $(link-out-dir$(sm))) \ 75 $(cppflags$(sm))) 76 77-include $(link-script-dep$(sm)) 78 79link-script-pp-makefiles$(sm) = $(filter-out %.d %.cmd,$(MAKEFILE_LIST)) 80 81define gen-link-t 82$(link-script-pp$(sm)): $(link-script$(sm)) $(conf-file) $(link-script-pp-makefiles$(sm)) 83 @$(cmd-echo-silent) ' CPP $$@' 84 $(q)mkdir -p $$(dir $$@) 85 $(q)$(CPP$(sm)) -P -MT $$@ -MD -MF $(link-script-dep$(sm)) \ 86 $(link-script-cppflags-$(sm)) $$< -o $$@ 87 88$(link-out-dir$(sm))/$(user-ta-uuid).elf: $(objs) $(libdeps) \ 89 $(libdeps-after-libgcc) \ 90 $(link-script-pp$(sm)) \ 91 $(dynlistdep) \ 92 $(additional-link-deps) 93 @$(cmd-echo-silent) ' LD $$@' 94 $(q)$(LD$(sm)) $(ldargs-$(user-ta-uuid).elf) -o $$@ 95 96$(link-out-dir$(sm))/$(user-ta-uuid).dmp: \ 97 $(link-out-dir$(sm))/$(user-ta-uuid).elf 98 @$(cmd-echo-silent) ' OBJDUMP $$@' 99 $(q)$(OBJDUMP$(sm)) -l -x -d $$< > $$@ 100 101$(link-out-dir$(sm))/$(user-ta-uuid).stripped.elf: \ 102 $(link-out-dir$(sm))/$(user-ta-uuid).elf 103 @$(cmd-echo-silent) ' OBJCOPY $$@' 104 $(q)$(OBJCOPY$(sm)) --strip-unneeded $$< $$@ 105 106cmd-echo$(user-ta-uuid) := SIGN # 107ifeq ($(CFG_ENCRYPT_TA),y) 108crypt-args$(user-ta-uuid) := --enc-key $(TA_ENC_KEY) 109cmd-echo$(user-ta-uuid) := SIGNENC 110endif 111$(link-out-dir$(sm))/$(user-ta-uuid).ta: \ 112 $(link-out-dir$(sm))/$(user-ta-uuid).stripped.elf \ 113 $(TA_SIGN_KEY) $(TA_SUBKEY_DEPS) \ 114 $(lastword $(SIGN_ENC)) 115 @$(cmd-echo-silent) ' $$(cmd-echo$(user-ta-uuid)) $$@' 116 $(q)$(SIGN_ENC) --key $(TA_SIGN_KEY) $(TA_SUBKEY_ARGS) \ 117 $$(crypt-args$(user-ta-uuid)) \ 118 --uuid $(user-ta-uuid) --ta-version $(user-ta-version) \ 119 --in $$< --out $$@ 120endef 121 122$(eval $(call gen-link-t)) 123 124additional-link-deps := 125