[otbn] Small decode fixes and struct rearrangement

This places far more of the decoder signals into the specific
base/bignum structs. Those signals that are moved into the specific
structs may have had a shared meaning but are unrelated in terms of
logic (e.g. operand select for the ALUs, different decode logic for
bignum and base ISAs and different ALU muxes they control).

There are some small clean-ups around removing unused types and enums
that relate to decode.

Signed-off-by: Greg Chadwick <gac@lowrisc.org>
3 files changed
tree: 7c419b03d2eb2700ac200bca7329837b38811570
  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

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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.

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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.

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