[mask_rom] Resolve some Open Questions

This commit:
- Deduplicates the ROM_EXT manifest definitions, pointing everywhere to
  the canonical definition in `sw/device/rom_exts/manifest.md`
- Resolves an open question in the ROM_EXT manifest about signing
  schemes. This was answered by Garret Kelly in the Keys + Signatures
  module document. This makes the representation less defined for the
  moment, while we resolve the rest of the signature scheme questions.
- Resolves an open question about the alignment of the extension
  offsets, and more clearly states the open question about how many
  extension pairs we should include.

Signed-off-by: Sam Elliott <selliott@lowrisc.org>
2 files changed
tree: 52914ca5b4570236a7ede67091b1cc1fac7464ed
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. site/
  6. sw/
  7. test/
  8. util/
  9. .clang-format
  10. .dockerignore
  11. .flake8
  12. .gitignore
  13. .style.yapf
  14. _index.md
  15. apt-requirements.txt
  16. azure-pipelines.yml
  17. check_tool_requirements.core
  18. CLA
  19. COMMITTERS
  20. CONTRIBUTING.md
  21. LICENSE
  22. meson.build
  23. meson_init.sh
  24. meson_options.txt
  25. python-requirements.txt
  26. README.md
  27. tool_requirements.py
  28. toolchain.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 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).