Repository navigation
[lc_ctrl/doc] Note that NVM_DEBUG_EN is off in TEST_UNLOCKED7 - #31744
Merged
Merged
Conversation
The function table in the device life cycle specification enables NVM_DEBUG_EN in every TEST_UNLOCKED state. The life cycle controller documentation and lc_ctrl_signal_decode.sv disable it in TEST_UNLOCKED7, so that the isolated flash partition can be populated securely. Mark the exception in the table. Signed-off-by: Martin Velay <mvelay@lowrisc.org>
gautschimi
self-requested a review
October 26, 2026 20:51
gautschimi
approved these changes
Oct 26, 2026
gautschimi
left a comment
gautschimi
left a comment
Contributor
There was a problem hiding this comment.
This is a valuable addition to the doc. Thanks for this clarification!
martin-velay
enabled auto-merge
October 27, 2026 05:30
vogelpi
approved these changes
Oct 27, 2026
vogelpi
left a comment
vogelpi
left a comment
Contributor
There was a problem hiding this comment.
LGTM, thanks @martin-velay and @gautschimi !
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
The function table in the device life cycle specification enables
NVM_DEBUG_ENin every TEST_UNLOCKED state. Thelc_ctrltheory of operation (NVM_DEBUG_ENsection) andlc_ctrl_signal_decode.svdisable it in TEST_UNLOCKED7, so that the isolated flash partition can be populated without exposing it through the NVM backdoor. This marks the exception in the table and links to thelc_ctrltext.Documentation only.