| commit | 5ce1cb7b6332f8f96149bc6242b60bcef5782186 | [log] [tgz] |
|---|---|---|
| author | Greg Chadwick <gac@lowrisc.org> | Wed Jan 13 14:20:48 2021 +0000 |
| committer | Greg Chadwick <gac@lowrisc.org> | Fri Jan 22 16:46:49 2021 +0000 |
| tree | fbb229c13ce014e57aa076fd7d69abe7c843ae05 | |
| parent | 711d2261ebf9168b962d62afeeceb768b15da281 [diff] |
[otbn] Switch to using bitfield for errors This replaces the `ERR_CODE` register with an `ERR_BITS` register. This is a bitfield where a particular bit signals a particular error. The commit includes all RTL, documentation and software updates needed. For the ISS this commit alters the error codes it uses to match the `ERR_BITS` encoding but further work is required so the ISS can produce several errors at once. For now the RTL continues to prioritise errors and will only signal a single error. This is to ease the transition to the use of `ERR_BITS` whilst the ISS changes are still needed. The RTL will drop the prioritising and will be capable of signalling several errors at once when the ISS is ready to deal with this. Signed-off-by: Greg Chadwick <gac@lowrisc.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 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 access it online at docs.opentitan.org.
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).