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README-mynewt.rst

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Running mynewt apps with mcuboot

Due to small differences between Mynewt's bundled bootloader and mcuboot, when building an app that will be run with mcuboot as the bootloader and which at the same time requires to use newtmgr to manage images, mcuboot must be added as a new dependency for this app.

First you need to add the repo to your project.yml:

project.repositories:
    - mcuboot

repository.mcuboot:
    type: github
    vers: 0-dev
    user: runtimeco
    repo: mcuboot

Then update your app's pkg.yml adding the extra dependency:

pkg.deps:
    - "@mcuboot/boot/bootutil"

Also remove any dependency on boot/bootutil (mynewt's bundled bootloader) which might exist.

To configure mcuboot check all the options available in boot/mynewt/mcuboot_config/syscfg.yml.

Also, mcuboot uses a different image header struct as well as slightly different TLV structure, so images created by newt have to be generated in this new format. That is done by passing the extra parameter -2 as in:

newt create-image <target> <version> <pubkey> -2