epcomcnattach
int epcomcnattach(bus_space_tag_t, bus_addr_t, bus_space_handle_t,
if (epcomcnattach(&ep93xx_bs_tag, EP93XX_APB_HWBASE + comaddr[CONUNIT],
if (epcomcnattach(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1,