CVA6 APU
========

Memory Map
----------

+---------------+----------------+------------------+----------------+
| Base          | Length         | Attributes       | Description    |
+===============+================+==================+================+
| 0x0000_0000   | 0x1000         | EX               | Debug Module   |
+---------------+----------------+------------------+----------------+
| 0x0001_0000   | 0x10000        | EX               | ROM            |
+---------------+----------------+------------------+----------------+
| 0x0200_0000   | 0xC0000        |                  | CLINT          |
+---------------+----------------+------------------+----------------+
| 0x0C00_0000   | 0x400_0000     |                  | PLIC           |
+---------------+----------------+------------------+----------------+
| 0x1000_0000   | 0x1000         |                  | UART           |
+---------------+----------------+------------------+----------------+
| 0x1800_0000   | 0x1000         |                  | Timer          |
+---------------+----------------+------------------+----------------+
| 0x2000_0000   | 0x80_0000      |                  | SPI            |
+---------------+----------------+------------------+----------------+
| 0x3000_0000   | 0x10000        |                  | Ethernet       |
+---------------+----------------+------------------+----------------+
| 0x4000_0000   | 0x1000         |                  | GPIO           |
+---------------+----------------+------------------+----------------+
| 0x8000_0000   | 0x4000_0000    | EX, NI, C        | DRAM           |
+---------------+----------------+------------------+----------------+

*(EX: Executable, NI: Non-idempotent, C: Cached)*


Platform-Level Interrupt Controller (PLIC)
------------------------------------------

The specification of CVA6's platform-level interrupt controller (PLIC) is aligned with the PLIC of
SiFive's FU540-C000_. It shares the same functionality and memory map and has the following
interrupt sources:

+---------------+----------------+
| Interrupt ID  | Source         |
+===============+================+
| 1             | UART           |
+---------------+----------------+
| 2             | SPI            |
+---------------+----------------+
| 3             | Ethernet       |
+---------------+----------------+
| 4             | Timer 0 (OVF)  |
+---------------+----------------+
| 5             | Timer 0 (CMP)  |
+---------------+----------------+
| 6             | Timer 1 (OVF)  |
+---------------+----------------+
| 7             | Timer 1 (CMP)  |
+---------------+----------------+
| 8 -- 30       | *Reserved*     |
+---------------+----------------+

.. _FU540-C000: https://static.dev.sifive.com/FU540-C000-v1.0.pdf