| commit | 7d3a9e02973118cdc3b48b0e45ec5d3e72ce965e | [log] [tgz] |
|---|---|---|
| author | Silvestrs Timofejevs <silvestrst@lowrisc.org> | Mon Dec 16 16:17:12 2019 +0000 |
| committer | Garret Kelly <Garret.Kelly@gmail.com> | Wed Jan 15 12:36:03 2020 -0500 |
| tree | d43ac5a2a27886e4bc1d6e54205f004c5b94e61b | |
| parent | 642faf284bf9446c2194c914187b3f4ff9c1bf36 [diff] |
[dif_uart] Introduce UART DIF library This change introduces an UART DIF, a low level library for UART hardware manipulation. The set of functions in this library can be used in an ISR context, as well as normal execution context (It is up to the higher level driver or OS to guard against the race conditions). The init function is responsible for initialising the UART state, which must be passed to all other DIF API. This change is written to RFC #1043, and fixes issue #1076 Limitations: * Implementation expects that only one thread of execution exclusively owns the hardware resource. This is a subject to implementation in a higher level driver, or OS. * Implementation does not protect against race conditions that can occur between the ISR context and normal execution context. This responsibility also lies on a higher level driver or OS. Current state: * Fundamental API has been introduced, which should be sufficient for an UART driver needs, however it may be evolved and extended. For example, private user data could be added to the state structure. * This API is largely untested Signed-off-by: Silvestrs Timofejevs <silvestrst@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 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).