+/*
+ * sandbox_timer_add_offset()
+ *
+ * Allow tests to add to the time reported through lib/time.c functions
+ * offset: number of milliseconds to advance the system time
+ */
+void sandbox_timer_add_offset(unsigned long offset);
+
+/**
+ * sandbox_i2c_rtc_set_offset() - set the time offset from system/base time
+ *
+ * @dev: RTC device to adjust
+ * @use_system_time: true to use system time, false to use @base_time
+ * @offset: RTC offset from current system/base time (-1 for no
+ * change)
+ * @return old value of RTC offset
+ */
+long sandbox_i2c_rtc_set_offset(struct udevice *dev, bool use_system_time,
+ int offset);
+
+/**
+ * sandbox_i2c_rtc_get_set_base_time() - get and set the base time
+ *
+ * @dev: RTC device to adjust
+ * @base_time: New base system time (set to -1 for no change)
+ * @return old base time
+ */
+long sandbox_i2c_rtc_get_set_base_time(struct udevice *dev, long base_time);
+
+int sandbox_usb_keyb_add_string(struct udevice *dev, const char *str);
+