[dv] Add ROM-only chip-level test example

A few chip-level tests (e.g., `chip_sw_flash_init`) must run and
complete entirely in the ROM stage. This means that the conventional
mechanism for running chip-level tests at the flash (ROM_EXT) stage is
not suitable for such tests.

This commit overcomes this by adding a mechanism to build a chip-level
test to be run in ROM using the meson build system. (Conveniently, the
`opentitan_functest` rule already provides such a mechanism using the
`test_in_rom` rule option.) Additionally, this commit updates the DV
testbench to skip loading of a flash image (either via bootstrap or via
the backdoor mem util mechanism) if no such flash image is provided at
runtime. Lastly, an example ROM-stage chip-level test is added to verify
the correctness of the added infrastructure, and to provide a reference
point for future chip-level test development.

Signed-off-by: Timothy Trippel <ttrippel@google.com>
7 files changed
tree: c79a67df975ef188773dd486bf4d1b9b62c261f7
  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.bazel
  25. check_tool_requirements.core
  26. CLA
  27. COMMITTERS
  28. CONTRIBUTING.md
  29. LICENSE
  30. meson-config.txt
  31. meson.build
  32. meson_init.sh
  33. meson_options.txt
  34. python-requirements.txt
  35. README.md
  36. tool_requirements.py
  37. toolchain.txt
  38. topgen-reg-only.core
  39. topgen.core
  40. WORKSPACE
  41. yum-requirements.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.

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.

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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).