Enable scratch encryption and increase swap RAM buffer #10
Conversation
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Outdated suggestions cannot be applied.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.
These are two experimental features that might need some additional work in future.
mcuboot.encrypt-scratch: true -> enables scratch encryption
During a swap when movig data from slot 1 to scratch data is decrypted taking care of slot 1 offsets. This is the default MCUboot behaviour. This features enables re-encryption of this data before writing it into scratch and decryption before writing scratch data into slot 0.
mcuboot.swap-buf-size: 131072 -> swap buffer size
During a swap data is normally readed from flash and store into a 1K buffer to encrypt/decrypt and moving the data. Increasing the size of the buffer improves swap time. Swapping 1MB of data with 1KB buffer takes 5' using 128KB buffer takes 3'2''