diff --git a/ports/esp32/modmachine.c b/ports/esp32/modmachine.c
index 01acb0102..31fa589ae 100644
--- a/ports/esp32/modmachine.c
+++ b/ports/esp32/modmachine.c
@@ -207,6 +207,13 @@ STATIC mp_obj_t machine_reset_cause(size_t n_args, const mp_obj_t *pos_args, mp_
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_reset_cause_obj, 0,  machine_reset_cause);
 
+NORETURN mp_obj_t machine_bootloader(size_t n_args, const mp_obj_t *args) {
+    MICROPY_BOARD_ENTER_BOOTLOADER(n_args, args);
+    for (;;) {
+    }
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_bootloader_obj, 0, 1, machine_bootloader);
+
 void machine_init(void) {
     is_soft_reset = 0;
 }
@@ -276,6 +283,7 @@ STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_lightsleep), MP_ROM_PTR(&machine_lightsleep_obj) },
     { MP_ROM_QSTR(MP_QSTR_deepsleep), MP_ROM_PTR(&machine_deepsleep_obj) },
     { MP_ROM_QSTR(MP_QSTR_idle), MP_ROM_PTR(&machine_idle_obj) },
+    { MP_ROM_QSTR(MP_QSTR_bootloader), MP_ROM_PTR(&machine_bootloader_obj) },
 
     { MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&machine_disable_irq_obj) },
     { MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&machine_enable_irq_obj) },
diff --git a/ports/esp32/modmachine.h b/ports/esp32/modmachine.h
index 138a89e9c..24417f610 100644
--- a/ports/esp32/modmachine.h
+++ b/ports/esp32/modmachine.h
@@ -31,5 +31,6 @@ void machine_pwm_deinit_all(void);
 // TODO: void machine_rmt_deinit_all(void);
 void machine_timer_deinit_all(void);
 void machine_i2s_init0();
+NORETURN mp_obj_t machine_bootloader(size_t n_args, const mp_obj_t *args);
 
 #endif // MICROPY_INCLUDED_ESP32_MODMACHINE_H
diff --git a/ports/esp32/mpconfigport.h b/ports/esp32/mpconfigport.h
index e97980c36..714871d4f 100644
--- a/ports/esp32/mpconfigport.h
+++ b/ports/esp32/mpconfigport.h
@@ -228,6 +228,10 @@ typedef long mp_off_t;
 #define MICROPY_HW_ENABLE_MDNS_RESPONDER    (1)
 #endif
 
+#ifndef MICROPY_BOARD_ENTER_BOOTLOADER
+#define MICROPY_BOARD_ENTER_BOOTLOADER(nargs, args)
+#endif
+
 #ifndef MICROPY_BOARD_STARTUP
 #define MICROPY_BOARD_STARTUP boardctrl_startup
 #endif