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opensecura / 3p / lowrisc / opentitan / a948fc3bbd801e8dcc493ce7bf73f0eead0fdeb7
commita948fc3bbd801e8dcc493ce7bf73f0eead0fdeb7[log] [tgz]
authorJes B. Klinke <jbk@chromium.org>Tue Jan 25 15:44:27 2022 -0800
committerTimothy Trippel <5633066+timothytrippel@users.noreply.github.com>Tue Feb 08 15:25:33 2022 -0800
tree238609037632c6656d1232d9b12d266da153f46f
parentc18d780e3eb76dfccf48d57bbd834c5afb0ebb7b [diff]
[opentitantool] Add non-SPI rescue protocol for bootstrapping

Ti50 firmware supports a serial protocol for flashing a replacement
image, which we would like opentitantool to be able to use.  In order
to add this protocol a few changes to generic code has been made:

1. Refactoring of bootstrap/mod.rs to remove assumption of SPI and
bootstrap pin being used for all protocols.

2. Minor modifications to io/uart.rs trait and implementations, to
ensure uniform behavior of read_timeout(), and to simplify callers use
of write().

Signed-off-by: Jes B. Klinke <jbk@chromium.org>
Change-Id: I2a612abb2f2de0b2f1f72cdc7bf94c0a51ec99de
14 files changed
tree: 238609037632c6656d1232d9b12d266da153f46f
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. rules/
  6. site/
  7. sw/
  8. test/
  9. third_party/
  10. util/
  11. .bazelignore
  12. .bazelrc
  13. .bazelversion
  14. .clang-format
  15. .dockerignore
  16. .flake8
  17. .gitignore
  18. .style.yapf
  19. .svlint.toml
  20. .svls.toml
  21. _index.md
  22. apt-requirements.txt
  23. azure-pipelines.yml
  24. BUILD
  25. check_tool_requirements.core
  26. CLA
  27. COMMITTERS
  28. CONTRIBUTING.md
  29. LICENSE
  30. meson.build
  31. meson_init.sh
  32. meson_options.txt
  33. python-requirements.txt
  34. README.md
  35. tool_requirements.py
  36. toolchain.txt
  37. topgen-reg-only.core
  38. topgen.core
  39. WORKSPACE
  40. yum-requirements.txt
README.md

OpenTitan

OpenTitan logo

About the project

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.

About this repository

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.

Documentation

The project contains comprehensive documentation of all IPs and tools. You can access it online at docs.opentitan.org.

How to contribute

Have a look at CONTRIBUTING and our documentation on project organization and processes for guidelines on how to contribute code to this repository.

Licensing

Unless otherwise noted, everything in this repository is covered by the Apache License, Version 2.0 (see LICENSE for full text).