void i82801gx_enable_usbdebug(unsigned int port);
#endif
+#if defined(__PRE_RAM__) && !defined(__ROMCC__) && !defined(ASSEMBLY)
+void enable_smbus(void);
+int smbus_read_byte(unsigned device, unsigned address);
+#endif
+
#define MAINBOARD_POWER_OFF 0
#define MAINBOARD_POWER_ON 1
#define MAINBOARD_POWER_KEEP 2