| commit | 614ac71a9c4d39ddcd18d762736c3fbe6abda9e7 | [log] [tgz] |
|---|---|---|
| author | Michael Schaffner <msf@opentitan.org> | Tue Mar 02 12:52:22 2021 -0800 |
| committer | Michael Schaffner <msf@google.com> | Wed Mar 03 10:21:09 2021 -0800 |
| tree | 2c724c6029b76f4669ca5cd0551d659b51f2c791 | |
| parent | 0afe6fa9b530969fdfca9cb68656db477fde179b [diff] |
[lc_ctrl] Do not latch new LC state in register Previously, the new LC state has been latched inside the lc_ctrl before programming it, with the intent to reuse some of the error checking logic on that LC state. However, this path can potentially be dangerous since it requires additional logic to make sure the life cycle signals are not decoded anymore once the new state has been latched. This change therefore removes this feedback path into the life cycle state register, and directly feeds out the combinationally computed next state. This logic is running on a very slow clock <=25 MHz, hence this should not create timing issues. 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 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).