[yocto] Warning: unable to open an initial console

[Andrea Adami]

On Fri, May 26, 2017 at 1:05 PM, Gerard van den Bosch
<gvandenbosch at gmail.com> wrote:
> Hello,
>
> I have build my vendor custom kernel 2.6.20 with yocto daisy.
> Daisy is used because seems to be last release supporting this old kernel.
>
> I tried building core-image-minimal and core-image-base.
>
> The kernel boots and the rootfs is mounted but then I get:
>
> "Warning: unable to open an initial console."
>
>
> I found on the internet this is because "/dev/console" doesn't exists.
> The dev folder in my generated rootfs is empty.
>
> On internet found can do the following commands:
> "mknod -m 600 /dev/console c 5 1 "
> "mknod -m 666 /dev/null c 1 3"
>
> But if this is the problem how do I add this to my recipe?
> Or is there a proper way to populate this devices?
>
> Cheers,
> Gerard
>
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Hello Gerard,

if your old kernel lacks devtmpfs you need a "device table".
You need to set at least
IMAGE_DEVICE_TABLES = "files/device_table-minimal.txt"

This is a default set in image.bbclass before and after daisy...dunno
what's happened with this release.

Cheers
Andrea