diff --git a/Makefile b/Makefile
index f3f959264943..41a9b3afa428 100644
--- a/Makefile
+++ b/Makefile
@@ -119,7 +119,7 @@ help_coreboot help::
 
 # This include must come _before_ the pattern rules below!
 # Order _does_ matter for pattern rules.
-include $(srck)/Makefile
+include $(srck)/Makefile.inc
 
 # Three cases where we don't need fully populated $(obj) lists:
 # 1. when no .config exists
diff --git a/util/kconfig/Makefile b/util/kconfig/Makefile
index 147b125b9664..1713b8d0eb9e 100644
--- a/util/kconfig/Makefile
+++ b/util/kconfig/Makefile
@@ -10,14 +10,6 @@ DEFCONFIG?=defconfig
 PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config \
 	localmodconfig localyesconfig
 
-_OS=$(shell uname -s |cut -c-7)
-regex-objs=
-ifeq ($(_OS),MINGW32)
-	regex-objs=regex.o
-endif
-
-Kconfig ?= src/Kconfig
-
 xconfig: $(objk)/qconf
 	$< $(Kconfig)
 
@@ -345,8 +337,6 @@ $(objk)/nconf: $(patsubst %,$(objk)/%,$(nconf-objs))
 	$(HOSTCC) $(HOSTCFLAGS) -o $@ $^ $(HOSTLOADLIBES_nconf)
 $(objk)/conf: $(patsubst %,$(objk)/%,$(conf-objs))
 	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -o $@ $^
-$(objk)/toada: $(objk)/toada.o
-	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -o $@ $^
 
 $(objk)/mconf.o: $(srck)/mconf.c
 	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<
@@ -356,8 +346,6 @@ $(objk)/nconf.gui.o: $(srck)/nconf.gui.c
 	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<
 $(objk)/conf.o: $(srck)/conf.c
 	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<
-$(objk)/regex.o: $(srck)/regex.c
-	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -DHAVE_STRING_H -c -o $@ $<
 
 $(objk)/zconf.tab.o: $(objk)/zconf.tab.c $(objk)/zconf.lex.c \
 		     $(objk)/zconf.hash.c
@@ -385,8 +373,5 @@ $(objk)/lxdialog/lxdialog: $(objk)/dochecklxdialog \
 $(objk)/lxdialog/%.o: $(srck)/lxdialog/%.c
 	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) $^ -c -o $@
 
-$(objk)/toada.o: $(srck)/toada.c
-	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<
-
 $(objk)/%.o: HOSTCFLAGS+=-I$(srck) -I$(objk)
 $(objk)/%.o: HOSTCXXFLAGS+=-I$(srck) -I$(objk)
diff --git a/util/kconfig/Makefile.inc b/util/kconfig/Makefile.inc
new file mode 100644
index 000000000000..27681f75a144
--- /dev/null
+++ b/util/kconfig/Makefile.inc
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Early configuration of coreboot specific changes
+Kconfig ?= src/Kconfig
+
+# Include verbatim Makefile
+include $(dir $(lastword $(MAKEFILE_LIST)))Makefile
+
+# Extend Linux kconfig build rules
+
+# Support mingw by shipping our own regex implementation
+_OS=$(shell uname -s |cut -c-7)
+regex-objs=
+ifeq ($(_OS),MINGW32)
+	regex-objs=regex.o
+endif
+$(objk)/regex.o: $(srck)/regex.c
+	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -DHAVE_STRING_H -c -o $@ $<
+
+conf-objs += $(regex-objs)
+mconf-objs += $(regex-objs)
+
+# Provide tool to convert kconfig output into Ada format
+$(objk)/toada: $(objk)/toada.o
+	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -o $@ $^
+$(objk)/toada.o: $(srck)/toada.c
+	$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<