[Buildroot] Freeze on "Starting Kernel"
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Tue Sep 15 13:30:03 UTC 2020
Hello Rob,
On Tue, 15 Sep 2020 12:20:38 +0200
<rob.r374 at gmail.com> wrote:
> As a Buildroot newbie I'm experimenting with different setups, packages and
> customizations.
>
> My system frequently freezes at the point, where it seems to jump to code
> from certain image
>
> - it says >Starting Kernel< and then nothing happens.
>
> For instance I add few additional packages to the buildroot build and then
> suddenly, kernel doesn't start.
Adding just a few more user-space packages should definitely not cause
this, *except* if you're using an initramfs filesystem and your kernel
image has grown too large.
> Can I somehow setup things to get any useful feedback about what is wrong in
> such situation ?
If you're on ARM32, you can enable CONFIG_DEBUG_LL and CONFIG_EARLYPRINTK
in your kernel configuration, specify a debug UART in the kernel
configuration, and pass "earlyprintk" on the kernel command line.
Best regards,
Thomas
--
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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