CODEWITHSUNDEEP
yoctorootfsinitramfs
josecm
josecm

Reputation: 485

Create just smallest possible rootfs using yocto

I want to create am minimal Linux system. I have compiled the kernel myself, but I want to use Yocto to build my rootfs. How can I build the smallest possible rootfs to startup and system and open a shell without building the kernel? Also, how can I choose the type of rootfs? I'd like it to be initramfs so I can then embed it in my kernel image.

Upvotes: 1

Views: 1836

Answers (2)

Tommy Trinh
Tommy Trinh

Reputation: 1

In my case at Styhead yocto version, I add this line to local.conf

PREFERRED_PROVIDER_virtual/kernel = "linux-dummy"

And add COMPATIBLE_MACHINE in .bb file, for example I will go for core-image-minimal and my machine is qemuaarch

At core-image-minimal.bb
COMPATIBLE_MACHINE:qemuaarch = "(qemuaarch)"
COMPATIBLE_MACHINE = "^(aarch64|qemuaarch)$"

Then I can build without building Kernel

Upvotes: 0

Jussi Kukkonen
Jussi Kukkonen

Reputation: 14607

Without more details both questions would require very long answers. Luckily the Development Manual covers the issues: See Building a tiny system and Building an initramfs image. I would suggest starting with those and asking more specific questions if needed.

Upvotes: 4

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