UTSR1
while (!(UART(UTSR1) & UTSR1_TNF))
while ((status = readl(micro->base + UTSR1)) & UTSR1_RNE) {
(readl(micro->base + UTSR1) & UTSR1_TNF)) {
#define UART_GET_UTSR1(sport) __raw_readl((sport)->port.membase + UTSR1)
#define UART_PUT_UTSR1(sport,v) __raw_writel((v),(sport)->port.membase + UTSR1)