| commit | 12d48111539c765567467c12c6f5486ce6d1140c | [log] [tgz] |
|---|---|---|
| author | Michael Schaffner <msf@opentitan.org> | Fri Jan 17 12:57:36 2020 -0800 |
| committer | Michael Schaffner <msf@google.com> | Fri Jan 17 15:43:30 2020 -0800 |
| tree | 36c183ef66b22de9b4fea961c6c156e0de40f6c5 | |
| parent | 990761c13c0c33cee77c20cd2330cc181daa75f4 [diff] |
[rv_plic] Work around sim/synth mismatch in Vivado This works around a simulation synthesis mismatch that can be observed in Vivado 2018.3 and 2019.2 (other versions have not been tested). In particular, Vivado optimizes away the rv_plic_target module if the ternary statements are present within the two generate loops. The workaround consists of rewriting these MUX statements with bitwise ops and assign statements. The issue has been reported to Xilinx: https://forums.xilinx.com/t5/Synthesis/Simulation-Synthesis-Mismatch-with-Vivado-2018-3/m-p/1065923#M33849 Signed-off-by: Michael Schaffner <msf@opentitan.org>
OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the the OpenTitan site and OpenTitan docs for more information about the project.
This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or “monorepo”, where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.
The project contains comprehensive documentation of all IPs and tools. You can either access it online or build it locally by following the steps below.
$ sudo apt install curl python3 python3-pip $ pip3 install --user -r python-requirements.txt
$ ./util/build_docs.py --preview
This compiles the documentation into ./build/docs and starts a local server, which allows you to access the documentation at http://127.0.0.1:1313.
Have a look at CONTRIBUTING for guidelines on how to contribute code to this repository.
Unless otherwise noted, everything in this repository is covered by the Apache License, Version 2.0 (see LICENSE for full text).