UART011_RXIM
uap->im |= UART011_RXIM;
uap->im |= UART011_RXIM;
uap->im &= ~(UART011_RXIM | UART011_RTIM | UART011_FEIM |
uap->im |= UART011_RXIM;
pl011_write(UART011_RTIM | UART011_RXIM, uap, REG_IMSC);
uap->im |= UART011_RXIM;
uap->im |= UART011_RXIM;
uap->im &= ~UART011_RXIM;
uap->im |= UART011_RXIM;