Add support for mtvec direct mode
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Nobody has claimed this yet.
Component:RTL
Type:Enhancement
- Dominant language
- SystemVerilog
- Stars
- 2.1k
- Forks
- 810
- Avg merge
- 5d 23h
- Merged PRs (30d)
- 9
Description
Some SW use cases would prefer to have support for "direct" interrupt mode rather than "vectored" mode in the mtvec csr (support for FreeRTOS and for boot ROMs e.g. in OpenTitan).
The rtl change is trivial but the impact on DV needs to be investigated.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the mtvec CSR implementation in the RTL and the existing DV coverage for vectored interrupt mode. Investigate how direct mode should be represented and verify the related DV impact. Done means direct mode is supported and its verification coverage is addressed.
Written by the indexing model from the issue text.
Assessment
- Domain
- embedded-iot
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100