lowRISC / lowRISC/opentitan

[Comportability] add guidance on local resets

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Component:Doc Component:Security Earlgrey-PROD Candidate Priority:P2
Dominant language
SystemVerilog
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Description

From the Reset Management specification:

IPs SHALL NOT implement local resets that wipe configuration registers (especially if there are configuration enables). It is permissible to implement local soft resets that clear datapaths; but these should be examined on a case by case basis for possible security side channels

Cc: @tjaychen

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue cites the Reset Management specification and asks for Comportability guidance on local resets. Start by locating the existing Comportability or reset-management documentation; done means the guidance records the configuration-register restriction, the limited soft-reset allowance, and the need to consider security side channels.

Written by the indexing model from the issue text.

Assessment

Domain
documentation, embedded-iot, security
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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