[yocto] Warning: unable to open an initial console

[Ayoub Zaki]

Hi Gerard,

did you try to set CONFIG_DEVTMPFS=y in your Kernel config ?

Cheers


On 26.05.2017 15:52, Gerard van den Bosch wrote:
> Hello Andrea,
>
> I have tried to add the line to my machine config:
> IMAGE_DEVICE_TABLES = "files/device_table-minimal.txt"
>
> But this didn't help, then I looked a bit further and also tried to 
> set the following:
>
> USE_DEVFS="0"
> VIRTUAL_RUNTIME_dev_manager = "mdev"
>
> Unfortunately this doesn't seem to change anything.
>
> Cheers,
> Gerard
>
> On Fri, May 26, 2017 at 7:27 PM, Andrea Adami <andrea.adami at gmail.com 
> <mailto:andrea.adami at gmail.com>> wrote:
>
>     On Fri, May 26, 2017 at 1:05 PM, Gerard van den Bosch
>     <gvandenbosch at gmail.com <mailto: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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>     > yocto at yoctoproject.org <mailto:yocto at yoctoproject.org>
>     > https://lists.yoctoproject.org/listinfo/yocto
>     <https://lists.yoctoproject.org/listinfo/yocto>
>     >
>
>     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
>
>
>
>

-- 

Ayoub Zaki

ayoub.zaki at embexus.com
Mobile: +49(0)176-62901545
https://embexus.com

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