Commit Graph

5 Commits

Author SHA1 Message Date
Sean Anderson a75b77d8e5 Add OHL license option
The AGPL was mostly a placeholder until I determined a better license to
use. TBH I wasn't expecting that anyone would find this repo.

Closes: #1
Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-03-17 20:38:08 -04:00
Sean Anderson db4c225db5 Support ENABLE_COUNTERS in hub
It's convenient to be able to adjust this parameter if the counters ever
end up on the critical path. Support adjusting it from hub.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-03-05 20:47:46 -05:00
Sean Anderson f09b89adeb phy_internal: Disable coltest without wishbone
When the wishbone management interface is disabled, disable coltest.

Fixes: b351beb ("Add hub")
Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-03-04 12:29:46 -05:00
Sean Anderson 45b134b1b2 Add examples
This adds an example of how to integrate the hub into a design. For the
moment, wishbone is disabled, but I plan to add a uart bridge in the
future.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-02-20 23:34:10 -05:00
Sean Anderson b351beb9a0 Add hub
This adds a basic hub wrapper module which incorperates the core
introduced in b68e131 ("Add a basic hub"). For each port, it
instantiates a phy (itself using a phy_internal wrapper) and an elastic
buffer. A WISHBONE parameter is used to control whether to instantiate a
wishbone interface. When disabled, we just respond to any request with
err. I've ommitted a separate testbench for phy_internal, since it is
much easier to create a smoke test using the hub interface.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-02-20 23:34:10 -05:00