FPGA Configuration Space Specification

This project is an effort to introduce a configuration space specification for Wishbone peripherals that allows them to be auto-probed by operating system drivers.

The following are currently available in the project repository:

• Specification
• Wishbone Simulation

Specification

The initial draft of the specification is available as a PDF in the project repository. You can download the latest version here.

Wishbone Simulation

The Wishbone simulation is a set of drivers that allow for the simulation of the configuration space structures and allow for understanding how the driver model will work. The simulation currently consists of:

• Wishbone Bus Driver This creates a Linux Wishbone bus (can be seen under /sys/bus/wb).
• Wishbone Peripheral Drivers These fake Wishbone drivers simply register to specific Wishbone ID's and print debug messages when loaded.
• Spec Board Driver This is a fake PCI driver for the spec board that takes a firmware file (representing the Wishbone address space) and registers any Wishbone peripherals it finds.

You can find the code for the simulation here. You can download binary versions of the drivers here (not recommended as it is kernel-version-specific and may be outdated with respect to the repository).

Status