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PULP Ethernet

pulp-ethernet is developed as part of the PULP project, a joint effort between ETH Zurich and the University of Bologna. It offers synthesizable Ethernet IP that is technology- and FPGA-agnostic.

This is adapted from:

  • LowRISC ariane-ethernet GHz Ethernet top-level for Genesys II board, master branch (ff9710f0);
  • Alex Forencich's verilog-ethernet components for various FPGA boards; in particular, the RGMII GHz Ethernet MAC.

Where possible, original source files from the abovementioned sources have been used.

pulp-ethernet is intended for use with https://github.com/pulp-platform/ariane (a RISCV Linux-capable soft core).

Compile (Questa)

make eth-hw-build

Simulate (Questa)

make eth-hw-sim

Debugging

Per default, Questasim compilation is performance-optimised and simulation logging is disabled. To enable full visibility, logging, and the Questa GUI, set DEBUG=1 when executing the steps above.

Address map:

0x800 : mac_address[31:0]
0x808 : {irq_en,promiscuous,spare,loopback,cooked,mac_address[47:32]}
0x810 : tx_enable_dly <= 10; tx_packet_length <= core_lsu_wdata;
0x818 : tx_enable_dly <= 0; tx_packet_length <= 0;
0x820 : lastbuf
0x828 : firstbuf

Linux drivers

Drivers can be found in the driver/ folder. Patch to cva6-sdk is found here.

License

Unless specified otherwise in the respective file headers, all code checked into this repository is made available under a permissive license. All original hardware sources and tool scripts are licensed under the Solderpad Hardware License 0.51 (see LICENSE). All software sources are licensed under Apache 2.0. Third-party sources come with their own license (see LICENSE.Forencich).