Re: How to use designware-root-port and designware-root-host devices ?

[Thomas Huth <thuth@redhat.com>]

On 21/06/2024 11.16, Peter Maydell wrote:
> On Fri, 21 Jun 2024 at 08:07, Arthur Tumanyan <arthurtumanyan@gmail.com> wrote:
>>
>> Hi,
>>
>> I just tried to run mcimx7d-sabre machine this way:
>>
>> ${HOME}/cosim/usr/local/bin/qemu-system-arm -M mcimx7d-sabre -m 2G \
>> -kernel ${HOME}/cosim-arm/buildroot/output/images/uImage \
>>          --initrd ${HOME}/cosim-arm/buildroot/output/images/rootfs.cpio.gz \
>> -nographic \
>> -net nic -net user
>>
>> and it just prints this and do nothing: qemu-system-arm: warning: nic imx.enet.1 has no peer
>>
>> Based on what I see in the mcimx7d-sabre.c , it configures just very basic things, no PCIe at all (may be I'm wrong ;) )
> 
> The machine model in mcimx7d-sabre.c creates the SoC object
> (TYPE_FSL_IMX7). It's the code for that in hw/arm/fsl-imx7.c
> that creates all the SoC devices including the PCIe controller.
> (This structure is similar to real hardware where you have a
> board, which has one or two chips on it like RAM but most of
> the complicated stuff is inside the one big SoC chip.)
> 
>> Is there any idea what goes wrong here ? Maybe someone has experience with running this machine ?
> 
> "No output" usually means "your guest kernel is not configured
> correctly for this machine type", and/or possibly "you didn't
> tell the kernel to output on the serial port".

By the way, it seems like we don't even have an avocado test for that 
machine available. Peter, do you know whether there is a kernel for this 
machine available somewhere that we could use for testing?

  Thomas