[make] split up specific make vars/targets into frags (#499)

* [make] split up specific make vars/targets into frags

* [make] move dramsim and max-cycles into SIM_FLAGS

* [misc] move ariane configs to configs/ folder

generators/tracegen/tracegen.mk

@@ -0,0 +1,18 @@
+##############################################################
+# extra variables/targets ingested by the chipyard make system
+##############################################################
+
+AXE_DIR=$(base_dir)/tools/axe/src
+AXE=$(AXE_DIR)/axe
+
+$(AXE): $(wildcard $(AXE_DIR)/*.[ch]) $(AXE_DIR)/make.sh
+	cd $(AXE_DIR) && ./make.sh
+
+$(output_dir)/tracegen.out: $(sim)
+	mkdir -p $(output_dir) && $(sim) $(PERMISSIVE_ON) $(SIM_FLAGS) $(EXTRA_SIM_FLAGS) $(VERBOSE_FLAGS) $(PERMISSIVE_OFF) none </dev/null 2> $@
+
+$(output_dir)/tracegen.result: $(output_dir)/tracegen.out $(AXE)
+	$(base_dir)/scripts/check-tracegen.sh $< > $@
+
+.PHONY: tracegen
+tracegen: $(output_dir)/tracegen.result