I apologize for the delay in responding to everybody, especially to you, Vedran.
We have been extremely busy getting things ready. As you know, what we plan to be open is not just the coreplex, but other important elements that compose the SoC. For example, right now we can say that the interrupt controller, debug, and SoC fabric will be open.
Many of the items we are working on, like the TileLink bus fabric, which we hope will be adopted broadly, are already open-sourced. Even though it’s not complete yet, the work in progress can be seen as part of Rocket-chip at https://github.com/ucb-bar/rocket-chip
We still need to complete a lot of the design work. In addition, as you can imagine, it’s a little bit confusing for other items like the bus fabric to be within the rocket-chip repository, which has historically been more focused on just the CPU.
We are working very hard at enabling a new open source repository that will be much easier to understand the various components. We expect to have this by early to mid October.