lowRISC / lowRISC/opentitan

[sw,silicon_creator] The current boot log is Earlgrey specific

Open
#28,388 4 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Component:Darjeeling Component:MultiTop
Dominant language
SystemVerilog
Stars
3.6k
Forks
1.1k
Avg merge
2d 22h
Merged PRs (30d)
141

Description

The current silicon creator boot log make assumptions that are Earlgrey specific:

  • Three boot stages (ROM, ROM_EXT and BL0)
  • ROM_EXT and BL0 have two slots, which assumes those artefacts are stored in separate, trusted flash slots.

Neither of those apply to Darjeeling, so I think we'd need to either define top specific boot log formats or expand the current structure to support other tops. Unfortunately it is not versioned so it may be difficult to introduce breaking changes. @cfrantz WDYT?

cc @pamaury @Razer6

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  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

Start by locating the current silicon creator boot-log format and its handling of Earlgrey's ROM, ROM_EXT, and BL0 stages and slots. Compare those assumptions with Darjeeling's boot flow, then determine whether top-specific formats or a backward-compatible expanded structure is needed; done means the format supports both tops without an untracked breaking change.

Written by the indexing model from the issue text.

Assessment

Domain
embedded-iot, security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.