oxidecomputer / oxidecomputer/lpc55_support

flash constants

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#92 1 comment 1 reaction 0 assignees View on GitHub

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Dominant language
Rust
Stars
13
Forks
7
PR merge metrics
No merged PRs in 30d

Description

I'm working on a tool to calculate the FWID for the lpc55 & stm32 images here: https://github.com/oxidecomputer/hubtools/issues/37, To do so for the lpc55 requires we know the page size for flash. lpc55_support has 512 hard coded in a number of places (mostly around the size of the C[F|M]PA region (one flash page) but it wouldn't take much to expose that value as a constant.

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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

Search the lpc55_support repository for the hard-coded 512 values, especially the code handling the C[F|M]PA region and flash-page sizing. Review the related logic and the FWID work described in oxidecomputer/hubtools#37, then expose one reusable constant and update the affected uses so the flash page size has a single source of truth.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
embedded-iot, tooling
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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