$(call prepare_generic_squashfs,$(KDIR)/root.squashfs)
endef
+define Image/Build/ext4/erlite
+ mkdir -p $(KDIR)/sysupgrade-erlite/
+ echo "BOARD=erlite" > $(KDIR)/sysupgrade-erlite/CONTROL
+ $(CP) $(KDIR)/vmlinux.elf $(KDIR)/sysupgrade-erlite/kernel
+ $(CP) $(KDIR)/root.ext4 $(KDIR)/sysupgrade-erlite/root
+ (cd $(KDIR); $(TAR) cvf \
+ $(BIN_DIR)/$(IMG_PREFIX)-erlite-sysupgrade.tar sysupgrade-erlite)
+endef
+
+define Image/Build/ext4
+ $(call Image/Build/ext4/erlite)
+endef
+
define Image/Build
$(call Image/Build/$(1))
dd if=$(KDIR)/root.$(1) of=$(BIN_DIR)/$(IMG_PREFIX)-root.$(1) bs=128k conv=sync