diff --git a/package/board/board.mk b/package/board/board.mk
index 5a20eef0..22050631 100644
--- a/package/board/board.mk
+++ b/package/board/board.mk
@@ -1,53 +1,2 @@
-define inner-ix-board
-
-$(2)_VERSION = ix-board
-$(2)_LICENSE = BSD-3-Clause
-$(2)_LICENSE_FILES = LICENSE
-$(2)_SITE_METHOD = local
-$(2)_SITE = $$(BR2_EXTERNAL_INFIX_PATH)/src/board/$(1)
-$(2)_REDISTRIBUTE = NO
-
-# The kernel must be built first.
-$(2)_DEPENDENCIES += \
-	linux \
-	$$(BR2_MAKE_HOST_DEPENDENCY)
-
-# This is only defined in some infrastructures (e.g. autotools, cmake),
-# but not in others (e.g. generic). So define it here as well.
-$(2)_MAKE ?= $$(BR2_MAKE)
-
-define $(2)_DTBS_BUILD
-	@$$(call MESSAGE,"Building device tree blob(s)")
-	$$(LINUX_MAKE_ENV) $$($$(PKG)_MAKE) \
-		-C $$(LINUX_DIR) \
-		$$(LINUX_MAKE_FLAGS) \
-		$$($(2)_DTB_MAKE_OPTS) \
-		PWD=$$(@D)/dts \
-		M=$$(@D)/dts \
-		modules
-endef
-$(2)_POST_BUILD_HOOKS += $(2)_DTBS_BUILD
-
-define $(2)_DTBS_INSTALL_TARGET
-	@$$(call MESSAGE,"Installing device tree blob(s)")
-	$$(TARGET_MAKE_ENV) $$(TARGET_CONFIGURE_OPTS) $$($$(PKG)_MAKE) \
-		-f $$(BR2_EXTERNAL_INFIX_PATH)/package/board/dtb-inst.makefile \
-		-C $$(@D)/dts \
-		DESTDIR="$$(TARGET_DIR)" \
-		install
-endef
-$(2)_POST_INSTALL_TARGET_HOOKS += $(2)_DTBS_INSTALL_TARGET
-
-define $(2)_OVERLAY_INSTALL_TARGET
-	@test -d $$(@D)/rootfs && \
-	$$(call MESSAGE,"Copying overlay") && \
-	$$(call SYSTEM_RSYNC,$$(@D)/rootfs,$(TARGET_DIR)) || \
-	true
-endef
-$(2)_POST_INSTALL_TARGET_HOOKS += $(2)_OVERLAY_INSTALL_TARGET
-
-endef
-
-ix-board = $(call inner-ix-board,$(pkgname),$(call UPPERCASE,$(pkgname)))
-
+include $(BR2_EXTERNAL_INFIX_PATH)/package/board/ix-board.mk
 include $(sort $(wildcard $(BR2_EXTERNAL_INFIX_PATH)/package/board/*/*.mk))
diff --git a/package/board/ix-board.mk b/package/board/ix-board.mk
new file mode 100644
index 00000000..391cb8be
--- /dev/null
+++ b/package/board/ix-board.mk
@@ -0,0 +1,51 @@
+define inner-ix-board
+
+$(2)_VERSION = ix-board
+$(2)_LICENSE = BSD-3-Clause
+$(2)_LICENSE_FILES = LICENSE
+$(2)_SITE_METHOD = local
+$(2)_SITE = $$(BR2_EXTERNAL_INFIX_PATH)/src/board/$(1)
+$(2)_REDISTRIBUTE = NO
+
+# The kernel must be built first.
+$(2)_DEPENDENCIES += \
+	linux \
+	$$(BR2_MAKE_HOST_DEPENDENCY)
+
+# This is only defined in some infrastructures (e.g. autotools, cmake),
+# but not in others (e.g. generic). So define it here as well.
+$(2)_MAKE ?= $$(BR2_MAKE)
+
+define $(2)_DTBS_BUILD
+	@$$(call MESSAGE,"Building device tree blob(s)")
+	$$(LINUX_MAKE_ENV) $$($$(PKG)_MAKE) \
+		-C $$(LINUX_DIR) \
+		$$(LINUX_MAKE_FLAGS) \
+		$$($(2)_DTB_MAKE_OPTS) \
+		PWD=$$(@D)/dts \
+		M=$$(@D)/dts \
+		modules
+endef
+$(2)_POST_BUILD_HOOKS += $(2)_DTBS_BUILD
+
+define $(2)_DTBS_INSTALL_TARGET
+	@$$(call MESSAGE,"Installing device tree blob(s)")
+	$$(TARGET_MAKE_ENV) $$(TARGET_CONFIGURE_OPTS) $$($$(PKG)_MAKE) \
+		-f $$(BR2_EXTERNAL_INFIX_PATH)/package/board/dtb-inst.makefile \
+		-C $$(@D)/dts \
+		DESTDIR="$$(TARGET_DIR)" \
+		install
+endef
+$(2)_POST_INSTALL_TARGET_HOOKS += $(2)_DTBS_INSTALL_TARGET
+
+define $(2)_OVERLAY_INSTALL_TARGET
+	@test -d $$(@D)/rootfs && \
+	$$(call MESSAGE,"Copying overlay") && \
+	$$(call SYSTEM_RSYNC,$$(@D)/rootfs,$(TARGET_DIR)) || \
+	true
+endef
+$(2)_POST_INSTALL_TARGET_HOOKS += $(2)_OVERLAY_INSTALL_TARGET
+
+endef
+
+ix-board = $(call inner-ix-board,$(pkgname),$(call UPPERCASE,$(pkgname)))