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Building for Morello CHERI with Yocto

Hi everybody,

We're working on a DSbD project to provide build support within the Yocto ecosystem,

We've been getting up the curve with the codebase and we see that whilst the current code in GitLab uses build scripts a year or two ago it was making use of some Yocto builds.

Ruben over at the Slack channel referred us to ask here. Could somebody have a chat with me about what was supported with the Yocto build and what the challenges were that lead to the removal of Yocto bitbake support in favour of the build scripts?

Thanks!

Alex Lennon

Director

Dynamic Devices Ltd

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  • Hi Deepak,

    We have the image booting to a shell on the Morello board which is great news!

    Can you perhaps just help me to understand - should we now be able to compile up a test application, eg that overwrites outside an array on the stack and have CHERI trap this?

    We have done a quick test but it seems we're being caught by gcc internal stack smashing trapping at the moment which we need to disable.

    Thanks!

    Alex

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  • Hi Deepak,

    We have the image booting to a shell on the Morello board which is great news!

    Can you perhaps just help me to understand - should we now be able to compile up a test application, eg that overwrites outside an array on the stack and have CHERI trap this?

    We have done a quick test but it seems we're being caught by gcc internal stack smashing trapping at the moment which we need to disable.

    Thanks!

    Alex

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