diff --git a/src/mainboard/google/sarien/ramstage.c b/src/mainboard/google/sarien/ramstage.c
index 1d220461cf..e246419373 100644
--- a/src/mainboard/google/sarien/ramstage.c
+++ b/src/mainboard/google/sarien/ramstage.c
@@ -15,6 +15,7 @@
 
 #include <arch/acpi.h>
 #include <drivers/vpd/vpd.h>
+#include <ec/google/wilco/commands.h>
 #include <smbios.h>
 #include <soc/gpio.h>
 #include <soc/ramstage.h>
@@ -69,6 +70,11 @@ void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 	cnl_configure_pads(gpio_table, num_gpios);
 }
 
+void mainboard_post(uint8_t value)
+{
+	wilco_ec_save_post_code(value);
+}
+
 static void mainboard_enable(struct device *dev)
 {
 	dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;