Changeset 0c5ea9b in rtems

2011-04-20 Rohan Kangralkar <rkangral@…>

PR 1781/bsps

• bf52x/include: Added additional MMR.
• bf52x/interrupt: The BF52X processors have a different System interrupt controller than present in the 53X range of processors. The 52X have 8 interrupt assignment registers. The implementation uses tables to increase predictability.
• serial/uart.?: Added DMA based and interrupt based transfer support. The uart code used a single ISR for TX and RX and tried to identify and multiplex inside the ISR. In the new code the type of interrupt is identified by the central ISR dispatcher bf52x/interrupt or interrupt/. This simplifies the UART ISR.