Integration of AIA into openpiton #137
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The PR aims to integrate AIA IP by Zero-Day Labs into OP.
AIA IP comprises APLIC (Advanced PLIC) for handling wired interrupts and IMSIC (Incoming Message Signaled Interrupt controller) for handling messaged signaled interrupts.
There are two modes that an APLIC supports:
In MSI mode, the role of an APLIC is to convert wired interrupts into MSI and send them to IMSIC for further handling. We are using NoC1 for sending the MSi requests from APLIC to IMSIC and NoC2 as a response. IMSIC is tightly coupled with the tile.
More details: Read the blog here