REG_ICR
pl011_write(0x00, uap, REG_ICR);
pl011_read(uap, REG_ICR);
pl011_read(uap, REG_ICR);
uap, REG_ICR);
pl011_write(pl011_read(uap, REG_MIS), uap, REG_ICR);
uap, REG_ICR);
pl011_write(UART011_RTIS | UART011_RXIS, uap, REG_ICR);
[REG_ICR] = UART011_ICR,
pl011_write(0xffff, uap, REG_ICR);
pl011_write(0xffff, uap, REG_ICR);
UART011_FEIS, uap, REG_ICR);
[REG_ICR] = UART011_ICR,