[dv gpio] Updates related to coverage, gpio weak pull, warnings' cleanup

1. cip_base_env_cov.sv: covergroup for the case in which interrupt state is
   cleared and then set again due to active interrupt event
2. pins_if.sv: Modified the way weak pull up/down is implemented to avoid
   overriding 'x' with 0/1, when there are multiple conflicting drivers
3. */tb.tb.sv: Connect wire devmode to connect to devmode_if pins port
4. gpio_env_cov.sv: cross coverage involving *out* and *oe* registers along
   with data_in registers
5. gpio_scoreboard.sv: Sampling for new covergroups
6. mem_model.sv: Fix compile warning
14 files changed
tree: 47d4f38019f2cb43b5528b74e56aed7fd4732386
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. sw/
  6. test/
  7. util/
  8. .clang-format
  9. .gitignore
  10. .style.yapf
  11. azure-pipelines.yml
  12. CONTRIBUTING.md
  13. index.md
  14. LICENSE
  15. meson.build
  16. meson_init.sh
  17. meson_options.txt
  18. python-requirements.txt
  19. README.md
  20. sitemap.md
  21. toolchain.txt
README.md

OpenTitan

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.

Documentation

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.

  1. Ensure that you have the required Python modules installed (to be executed in the repository root):
$ sudo apt install python3 python3-pip
$ pip3 install --user -r python-requirements.txt
  1. Execute the build script:
$ ./util/build_docs.py --preview

This compiles the documentation into ./opentitan-docs and starts a local server, which allows you to access the documentation at http://127.0.0.1:5500.

How to contribute

Have a look at CONTRIBUTING.md for guidelines 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).