1 files changed, 61 insertions, 0 deletions
diff --git a/ta/arch/arm/link.mk b/ta/arch/arm/link.mk
new file mode 100644
index 0000000..304bccc
--- /dev/null
+++ b/ta/arch/arm/link.mk
@@ -0,0 +1,61 @@
+link-out-dir = $(out-dir)
+
+link-script = $(TA_DEV_KIT_DIR)/src/ta.ld.S
+link-script-pp = $(link-out-dir)/ta.lds
+link-script-dep = $(link-out-dir)/.ta.ld.d
+
+SIGN = $(TA_DEV_KIT_DIR)/scripts/sign.py
+TA_SIGN_KEY ?= $(TA_DEV_KIT_DIR)/keys/default_ta.pem
+
+all: $(link-out-dir)/$(binary).elf $(link-out-dir)/$(binary).dmp \
+	$(link-out-dir)/$(binary).stripped.elf $(link-out-dir)/$(binary).ta
+cleanfiles += $(link-out-dir)/$(binary).elf $(link-out-dir)/$(binary).dmp
+cleanfiles += $(link-out-dir)/$(binary).map
+cleanfiles += $(link-out-dir)/$(binary).stripped.elf
+cleanfiles += $(link-out-dir)/$(binary).ta
+cleanfiles += $(link-script-pp) $(link-script-dep)
+
+link-ldflags  = $(LDFLAGS)
+link-ldflags += -pie
+link-ldflags += -T $(link-script-pp) -Map=$(link-out-dir)/$(binary).map
+link-ldflags += --sort-section=alignment
+
+# Macro to reverse a list
+reverse = $(if $(wordlist 2,2,$(1)),$(call reverse,$(wordlist 2,$(words $(1)),$(1))) $(firstword $(1)),$(1))
+
+link-ldadd  = $(LDADD)
+link-ldadd += $(addprefix -L,$(libdirs))
+link-ldadd += $(addprefix -l,$(call reverse,$(libnames)))
+ldargs-$(binary).elf := $(link-ldflags) $(objs) $(link-ldadd)
+
+
+link-script-cppflags-$(sm) := -DASM=1 \
+	$(filter-out $(CPPFLAGS_REMOVE) $(cppflags-remove), \
+		$(nostdinc$(sm)) $(CPPFLAGS) \
+		$(addprefix -I,$(incdirs$(sm)) $(link-out-dir)) \
+		$(cppflags$(sm)))
+
+-include $(link-script-dep)
+
+$(link-script-pp): $(link-script) $(MAKEFILE_LIST)
+	@$(cmd-echo-silent) '  CPP     $@'
+	$(q)mkdir -p $(dir $@)
+	$(q)$(CPP$(sm)) -Wp,-P,-MT,$@,-MD,$(link-script-dep) \
+		$(link-script-cppflags-$(sm)) $< > $@
+
+$(link-out-dir)/$(binary).elf: $(objs) $(libdeps) $(link-script-pp)
+	@$(cmd-echo-silent) '  LD      $@'
+	$(q)$(LD$(sm)) $(ldargs-$(binary).elf) -o $@
+
+$(link-out-dir)/$(binary).dmp: $(link-out-dir)/$(binary).elf
+	@$(cmd-echo-silent) '  OBJDUMP $@'
+	$(q)$(OBJDUMP$(sm)) -l -x -d $< > $@
+
+$(link-out-dir)/$(binary).stripped.elf: $(link-out-dir)/$(binary).elf
+	@$(cmd-echo-silent) '  OBJCOPY $@'
+	$(q)$(OBJCOPY$(sm)) --strip-unneeded $< $@
+
+$(link-out-dir)/$(binary).ta: $(link-out-dir)/$(binary).stripped.elf \
+				$(TA_SIGN_KEY)
+	@echo '  SIGN    $@'
+	$(q)$(SIGN) --key $(TA_SIGN_KEY) --in $< --out $@