[otbn] Synchronization interface#30660
Draft
etterli wants to merge 4 commits into
Draft
Conversation
This specifies and documents the new WFI instruction for OTBN.
Signed-off-by: Pascal Etterli <pascal.etterli@lowrisc.org>
This adds support for the new WFI enable bit in the CTRL register.
This adds a simple top level test to test the behaviour of the WFI instruction.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This is a draft implementation of the synchronization interface between Ibex and OTBN. OTBN can execute a WFI instruction which will stall the execution until Ibex writes a RESUME command to OTBN's CMD register.
Any feedback to the concept is highly appreciated whilst I'm away.
Missing features: