hdf_config/uart/uart_config.hcs

root {
    platform {
        template uart_controller {
            match_attr = "";
            num = 0;
            baudrate = 115200;
            fifoRxEn = 1;
            fifoTxEn = 1;
            flags = 4;
            regPbase = 0x09000000;
            interrupt = 33;
            iomemCount = 0x48;
        }
        controller_0x09000000 :: uart_controller {
            match_attr = "qemu_virt_uart_0";
        }
    }
}