chore: added makefile

code/boot/makefile

@@ -0,0 +1,39 @@
+# Makefile for Chibi PC-09 Firmware
+
+.PHONY: all clean
+.IGNORE: clean
+.DEFAULT_GOAL := all
+
+# ------------------------------------------------------------------------------
+# Project Defaults & Folders
+# ------------------------------------------------------------------------------
+
+TARGET   := boot.bin
+SRCDIR   := src/
+BUILDDIR := build/
+SRCS     := $(wildcard $(SRCDIR)*.s)
+OBJS     := $(patsubst $(SRCDIR)%.s,$(BUILDDIR)%.o,$(SRCS))
+
+# ------------------------------------------------------------------------------
+# Toolchain Definitions
+# ------------------------------------------------------------------------------
+
+AS := lwasm
+LD := lwlink
+AR := lwar
+
+# ------------------------------------------------------------------------------
+# Rules and Phony Targets
+# ------------------------------------------------------------------------------
+
+all: $(TARGET)
+	@echo ""
+
+$(TARGET): $(OBJS)
+
+$(OBJS): $(BUILDDIR)%.o : $(SRCDIR)%.s
+	-@mkdir -p $(BUILDDIR)
+	$(AS) --obj -o $@ $<
+
+clean:
+	rm -rvf $(BUILDDIR) $(TARGET)