diff --git a/src/mainboard/google/fatcat/Kconfig b/src/mainboard/google/fatcat/Kconfig
index 346d88d575..7b83976ba6 100644
--- a/src/mainboard/google/fatcat/Kconfig
+++ b/src/mainboard/google/fatcat/Kconfig
@@ -133,8 +133,10 @@ config BOARD_GOOGLE_KINMEN
 
 config BOARD_GOOGLE_LAPIS
 	select BOARD_GOOGLE_BASEBOARD_FATCAT
-	select FSP_UGOP_EARLY_SIGN_OF_LIFE
 	select DRIVERS_INTEL_TOUCH
+	select EC_GOOGLE_CHROMEEC_RTK
+	select EC_GOOGLE_CHROMEEC_LPC_GENERIC_MEMORY_RANGE
+	select FSP_UGOP_EARLY_SIGN_OF_LIFE
 	select HAVE_SLP_S0_GATE
 	select MAINBOARD_HAS_GOOGLE_STRAUSS_KEYBOARD
 
diff --git a/src/mainboard/google/fatcat/bootblock.c b/src/mainboard/google/fatcat/bootblock.c
index 6ee655ee58..e414937b83 100644
--- a/src/mainboard/google/fatcat/bootblock.c
+++ b/src/mainboard/google/fatcat/bootblock.c
@@ -2,6 +2,7 @@
 
 #include <baseboard/variants.h>
 #include <bootblock_common.h>
+#include <intelblocks/lpc_lib.h>
 
 void bootblock_mainboard_early_init(void)
 {
@@ -11,3 +12,10 @@ void bootblock_mainboard_early_init(void)
 	pads = variant_early_gpio_table(&num);
 	gpio_configure_pads(pads, num);
 }
+
+void bootblock_mainboard_init(void)
+{
+	if (CONFIG(EC_GOOGLE_CHROMEEC_LPC_GENERIC_MEMORY_RANGE))
+		lpc_open_mmio_window(CONFIG_EC_GOOGLE_CHROMEEC_LPC_GENERIC_MEMORY_BASE,
+			CONFIG_EC_GOOGLE_CHROMEEC_LPC_GENERIC_MEMORY_SIZE);
+}