diff --git a/src/ec/google/chromeec/Kconfig b/src/ec/google/chromeec/Kconfig
index 10b92cbd40..76eef05dbe 100644
--- a/src/ec/google/chromeec/Kconfig
+++ b/src/ec/google/chromeec/Kconfig
@@ -74,16 +74,8 @@ config EC_GOOGLE_CHROMEEC_SPI_CHIP
 	hex
 	default 0x0
 
-config EC_EXTERNAL_FIRMWARE
-	depends on EC_GOOGLE_CHROMEEC
-	bool "Disable building EC firmware"
-	default n
-	help
-	  Disable building EC firmware if it's already built externally (and
-	  added manually.)
-
 config EC_GOOGLE_CHROMEEC_BOARDNAME
-	depends on EC_GOOGLE_CHROMEEC && !EC_EXTERNAL_FIRMWARE
+	depends on EC_GOOGLE_CHROMEEC
 	string "Chrome EC board name for EC"
 	default ""
 	help
@@ -92,7 +84,7 @@ config EC_GOOGLE_CHROMEEC_BOARDNAME
 	  build the EC firmware and add it to the image.
 
 config EC_GOOGLE_CHROMEEC_PD_BOARDNAME
-	depends on EC_GOOGLE_CHROMEEC_PD && !EC_EXTERNAL_FIRMWARE
+	depends on EC_GOOGLE_CHROMEEC_PD
 	string "Chrome EC board name for PD"
 	default ""
 	help
@@ -107,6 +99,66 @@ config EC_GOOGLE_CHROMEEC_RTC
 	  Enable support for the real-time clock on the Chrome OS EC. This
 	  uses the EC_CMD_RTC_GET_VALUE command to read the current time.
 
+choice
+	prompt "Chrome EC firmware source"
+	depends on EC_GOOGLE_CHROMEEC
+	default EC_GOOGLE_CHROMEEC_FIRMWARE_BUILTIN if EC_GOOGLE_CHROMEEC_BOARDNAME != ""
+	default EC_GOOGLE_CHROMEEC_FIRMWARE_NONE
+
+	config EC_GOOGLE_CHROMEEC_FIRMWARE_NONE
+	bool "No EC firmware is included"
+	help
+	  Disable building and including any EC firmware in the image.
+
+	config EC_GOOGLE_CHROMEEC_FIRMWARE_EXTERNAL
+	bool "External EC firmware is included"
+	help
+	  Include EC firmware binary in the image from an external source.
+	  It is expected to be built externally.
+
+	config EC_GOOGLE_CHROMEEC_FIRMWARE_BUILTIN
+	bool "Builtin EC firmware is included"
+	help
+	  Build and include EC firmware binary in the image.
+
+endchoice
+
+config EC_GOOGLE_CHROMEEC_FIRMWARE_FILE
+	string "Chrome EC firmware path and filename"
+	depends on EC_GOOGLE_CHROMEEC_FIRMWARE_EXTERNAL
+	help
+	  The path and filename of the EC firmware file to use.
+
+choice
+	prompt "Chrome EC firmware source for PD"
+	depends on EC_GOOGLE_CHROMEEC_PD
+	default EC_GOOGLE_CHROMEEC_PD_FIRMWARE_BUILTIN if EC_GOOGLE_CHROMEEC_PD_BOARDNAME != ""
+	default EC_GOOGLE_CHROMEEC_PD_FIRMWARE_NONE
+
+	config EC_GOOGLE_CHROMEEC_PD_FIRMWARE_NONE
+	bool "No PD firmware is included"
+	help
+	  Disable building and including any PD firmware in the image.
+
+	config EC_GOOGLE_CHROMEEC_PD_FIRMWARE_EXTERNAL
+	bool "External PD firmware is included"
+	help
+	  Include PD firmware binary in the image from an external source.
+	  It is expected to be built externally.
+
+	config EC_GOOGLE_CHROMEEC_PD_FIRMWARE_BUILTIN
+	bool "Builtin PD firmware is included"
+	help
+	  Build and include PD firmware binary in the image.
+
+endchoice
+
+config EC_GOOGLE_CHROMEEC_PD_FIRMWARE_FILE
+	string "Chrome EC firmware path and filename for PD"
+	depends on EC_GOOGLE_CHROMEEC_PD_FIRMWARE_EXTERNAL
+	help
+	  The path and filename of the PD firmware file to use.
+
 config EC_GOOGLE_CHROMEEC_SWITCHES
 	depends on EC_GOOGLE_CHROMEEC && CHROMEOS
 	bool
diff --git a/src/ec/google/chromeec/Makefile.inc b/src/ec/google/chromeec/Makefile.inc
index 149c44306f..2fe6994884 100644
--- a/src/ec/google/chromeec/Makefile.inc
+++ b/src/ec/google/chromeec/Makefile.inc
@@ -33,34 +33,31 @@ verstage-$(CONFIG_EC_GOOGLE_CHROMEEC_SWITCHES) += switches.c
 romstage-$(CONFIG_EC_GOOGLE_CHROMEEC_SWITCHES) += switches.c
 ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC_SWITCHES) += switches.c
 
-ifneq ($(CONFIG_EC_EXTERNAL_FIRMWARE),y)
+CHROMEEC_SOURCE ?= $(top)/3rdparty/chromeec
+
 # These are Chrome EC firmware images that a payload (such as depthcharge) can
 # use to update the EC. ecrw is the main embedded controller's firmware,
 # pdrw is for a USB PD controller.
-CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME := $(call strip_quotes,$(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME))
-CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME := $(call strip_quotes,$(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME))
 
-cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME),y) += ecrw
+ifneq ($(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_NONE),y)
+
+cbfs-files-y += ecrw
 ecrw-file := $(obj)/mainboard/$(MAINBOARDDIR)/ecrw
 ecrw-name := ecrw
 ecrw-type := raw
 ecrw-compression := $(CBFS_COMPRESS_FLAG)
-cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME),y) += ecrw.hash
+cbfs-files-y += ecrw.hash
 ecrw.hash-file := $(obj)/mainboard/$(MAINBOARDDIR)/ecrw.hash
 ecrw.hash-name := ecrw.hash
 ecrw.hash-type := raw
 
-cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME),y) += pdrw
-pdrw-file := $(obj)/mainboard/$(MAINBOARDDIR)/pdrw
-pdrw-name := pdrw
-pdrw-type := raw
-pdrw-compression := $(CBFS_COMPRESS_FLAG)
-cbfs-files-$(if $(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME),y) += pdrw.hash
-pdrw.hash-file := $(obj)/mainboard/$(MAINBOARDDIR)/pdrw.hash
-pdrw.hash-name := pdrw.hash
-pdrw.hash-type := raw
+ifeq ($(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_EXTERNAL),y)
+CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_FILE := $(call strip_quotes,$(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_FILE))
 
-CHROMEEC_SOURCE ?= $(top)/3rdparty/chromeec
+$(obj)/mainboard/$(MAINBOARDDIR)/ecrw: $(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_FILE)
+	cp $(CONFIG_EC_GOOGLE_CHROMEEC_FIRMWARE_FILE) $@
+else
+CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME := $(call strip_quotes,$(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME))
 
 $(obj)/mainboard/$(MAINBOARDDIR)/ecrw:
 	$(MAKE) -C $(CHROMEEC_SOURCE) $(if $(CONFIG_CCACHE),,CCACHE=) \
@@ -70,6 +67,34 @@ $(obj)/mainboard/$(MAINBOARDDIR)/ecrw:
 		BOARD=$(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME) \
 		rw
 	cp $(obj)/external/chromeec/$(CONFIG_EC_GOOGLE_CHROMEEC_BOARDNAME)/RW/ec.RW.flat $@
+endif
+
+$(obj)/mainboard/$(MAINBOARDDIR)/ecrw.hash: $(obj)/mainboard/$(MAINBOARDDIR)/ecrw
+	openssl dgst -sha256 -binary $< > $@
+
+endif
+
+ifeq ($(EC_GOOGLE_CHROMEEC_PD),y)
+
+ifneq ($(CONFIG_EC_GOOGLE_CHROMEEC_PD_FIRMWARE_NONE),y)
+
+cbfs-files-y += pdrw
+pdrw-file := $(obj)/mainboard/$(MAINBOARDDIR)/pdrw
+pdrw-name := pdrw
+pdrw-type := raw
+pdrw-compression := $(CBFS_COMPRESS_FLAG)
+cbfs-files-y += pdrw.hash
+pdrw.hash-file := $(obj)/mainboard/$(MAINBOARDDIR)/pdrw.hash
+pdrw.hash-name := pdrw.hash
+pdrw.hash-type := raw
+
+ifeq ($(CONFIG_EC_GOOGLE_CHROMEEC_PD_FIRMWARE_EXTERNAL),y)
+CONFIG_EC_GOOGLE_CHROMEEC_PD_FIRMWARE_FILE := $(call strip_quotes,$(CONFIG_EC_GOOGLE_CHROMEEC_PD_FIRMWARE_FILE))
+
+$(obj)/mainboard/$(MAINBOARDDIR)/pdrw: $(CONFIG_EC_GOOGLE_CHROMEEC_PD_FIRMWARE_FILE)
+	cp $(CONFIG_EC_GOOGLE_CHROMEEC_PD_FIRMWARE_FILE) $@
+else
+CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME := $(call strip_quotes,$(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME))
 
 $(obj)/mainboard/$(MAINBOARDDIR)/pdrw:
 	$(MAKE) -C $(CHROMEEC_SOURCE) $(if $(CONFIG_CCACHE),,CCACHE=) \
@@ -79,11 +104,13 @@ $(obj)/mainboard/$(MAINBOARDDIR)/pdrw:
 		BOARD=$(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME) \
 		rw
 	cp $(obj)/external/chromeec/$(CONFIG_EC_GOOGLE_CHROMEEC_PD_BOARDNAME)/RW/ec.RW.flat $@
+endif
 
-$(obj)/mainboard/$(MAINBOARDDIR)/%.hash: $(obj)/mainboard/$(MAINBOARDDIR)/%
+$(obj)/mainboard/$(MAINBOARDDIR)/pdrw.hash: $(obj)/mainboard/$(MAINBOARDDIR)/pdrw
 	openssl dgst -sha256 -binary $< > $@
 
-.PHONY: $(obj)/mainboard/$(MAINBOARDDIR)/ecrw $(obj)/mainboard/$(MAINBOARDDIR)/pdrw
+endif
+
 endif
 
 endif
diff --git a/src/mainboard/google/lars/Kconfig b/src/mainboard/google/lars/Kconfig
index 8ac3c4441f..30abfa9682 100644
--- a/src/mainboard/google/lars/Kconfig
+++ b/src/mainboard/google/lars/Kconfig
@@ -9,7 +9,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select EC_GOOGLE_CHROMEEC_LPC
 	select EC_GOOGLE_CHROMEEC_MEC
 	select EC_GOOGLE_CHROMEEC_PD
-	select EC_EXTERNAL_FIRMWARE
 	select EXCLUDE_NATIVE_SD_INTERFACE
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
diff --git a/src/mainboard/intel/kunimitsu/Kconfig b/src/mainboard/intel/kunimitsu/Kconfig
index 2ff43feaa5..4433ee8579 100644
--- a/src/mainboard/intel/kunimitsu/Kconfig
+++ b/src/mainboard/intel/kunimitsu/Kconfig
@@ -9,7 +9,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select EC_GOOGLE_CHROMEEC_LPC
 	select EC_GOOGLE_CHROMEEC_MEC
 	select EC_GOOGLE_CHROMEEC_PD
-	select EC_EXTERNAL_FIRMWARE
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_OPTION_TABLE