Kernel runs in the higher address space

kboot/Makefile

@@ -0,0 +1,27 @@
+DEST=$(O)/kboot
+OBJS=$(DEST)/main.o $(DEST)/data.o
+CFLAGS=-mno-sse -mno-mmx -mno-sse2 -mno-3dnow
+
+$(if $(O),,$(error Specify the target directory))
+
+$(DEST)/kboot.elf: $(DEST) $(DEST)/kernel.lds $(OBJS)
+	@$(LD) $(LDFLAGS) -o $@ -T $(DEST)/kernel.lds -nostdlib $(OBJS)
+
+$(DEST)/%.o: %.c
+	@$(CC) $(CFLAGS) -c -o $@ -O3 $<
+
+$(DEST)/data.o: data.S
+	@$(CC) -c -o $@ -O3 -DKIMAGE='"$(KIMAGE)"' $^
+
+$(DEST)/kernel.lds: kernel.lds.S
+	$(if $(LOAD_PA),,$(error Specify the loading physical address))
+	@$(CC) -E -P -DLOAD_PA=$(LOAD_PA) -o $@ $<
+
+$(DEST):
+	@mkdir -p $(DEST)
+
+clean:
+	@$(RM) $(DEST)/*
+
+.PHONY: clean
+