diff --git a/hw/bsp/espressif/boards/family.c b/hw/bsp/espressif/boards/family.c
index 28dd49143..a837417f4 100644
--- a/hw/bsp/espressif/boards/family.c
+++ b/hw/bsp/espressif/boards/family.c
@@ -160,6 +160,14 @@ void board_putchar(int c) {
   putchar(c);
 }
 
+void board_init_after_tusb(void) {
+  // nothing to do
+}
+
+void board_reset_to_bootloader(void) {
+  // not implemented
+}
+
 //--------------------------------------------------------------------
 // PHY Init
 //--------------------------------------------------------------------