Regarding ARM on Genode virt_qemu_arm_v8a

Mon Feb 6 14:40:01 CET 2023

Thanks a lot Stefan for your explanation about the driver configuration.
I followed your roadmap and tried to configure the drivers with help of the
driver subsystem file that you mentioned for virt_qemu_arm_v8a platform and
generated the image.elf at /
*genode/build/arm_v8a/var/run/sculpt/boot/image.elf.*
While executing it to get the gui on QEMU i got the following error message.

Maybe I did something wrong in the
*genode/repos/gems/sculpt/drivers/virt_qemu_arm_v8a*  and missed any
drivers in the /*genode/repos/gems/sculpt/default-virt_qemu_arm_v8a.sculpt*.
Also I am not sure how to write this configuration.
Kindly guide me to configure the required drivers to boot the image in qemu.

Regards,
Divya.

On Tue, Oct 4, 2022 at 5:27 PM Stefan Kalkowski <
stefan.kalkowski at genode-labs.com> wrote:

> Hello Divya,
>
> as has been said, the virt_qemu_arm_v8a platform is not supported to run
> Sculpt yet. Nonetheless, essential drivers that need to be assembled
> to run Sculpt OS on this platform are already available in Genode.
> Therefore, it is mostly some integration work necessary, which you
> would need to do on your own. I'm afraid there is no ready-to-use
> documentation available to assist you in doing this integration work.
> However, there are some helpful pointers I can deliver.
>
> First you should read how the process of Sculpt OS image creation
> works, which is described in Genode release 22.02:
>
>
> https://genode.org/documentation/release-notes/22.02#Framework_for_special-purpose_Sculpt-based_operating_systems
>
> Second you can have a look at the genode-imx repository from the
> genodelabs Gitub account. It showcases how to provide a Sculpt OS
> variant for i.MX 8MQ EVK for instance. Here you might have a look at
> the driver subsytem in file `sculpt/drivers/imx8q_evk`, which states
> what drivers are statically started at boot time, and the file
> `sculpt/default-imx8q_evk.sculpt`, which describes what driver
> subsystem has to be used, and what packages need to be integrated
> additionally to the generic ones.
> To decide how to adapt the driver subsystem for the virt_qemu_armv8a
> board, you might have a look into the drivers_interactive package for
> this platform, especially the file:
> `repos/os/recipes/raw/drivers_interactive-virt_qemu_arm/drivers.config`.
> It shows which drivers are needed, and how to combine them to drive a
> graphical user-interface.
> Persistent storage is not available for this platform, but you won't
> need it to run Sculpt OS. You can use the RAM filesystem available in
> Sculpt instead.
>
> As soon as you have a setup that successfully starts the Sculpt OS GUI
> on top of Qemu, you can extend the sculpt.run script's `nic_drv`
> procedure to return the right NIC driver's name for the
> virt_qemu_armv8a board, which is `virtio_mmio_nic` in your case.
>
> Best regards
> Stefan
>
> On Tue, Oct 04, 2022 at 01:43:15PM +0530, Divya Sharma wrote:
> > Hello genodians
> > This is continuous from previous mail
> >
> > I'm fine a lot about virt_qemu in previous mails and any other sources
> but
> > unable to find proper documentation or anything.
> >
> > So if anyone suggest anything for virt_qemu for arm that would be great.
> >
> > Thanks and Regards
> >  Divya
> >
> >
> > On Sat, 1 Oct, 2022, 1:30 pm Divya Sharma, <divyasharma26546 at gmail.com>
> > wrote:
> >
> > > Hello genodians,
> > > We are trying to port genode for BOARD=virt_qemu_arm_v8a
> > >
> > > So for that we need to change this file
> > >
> > > " Given the sculpt.run script in 'repos/gems/run/', you'll find the
> > > restrictions in lines 13-23. Of course you might add the virt_qemu
> > > platform here. However, you've to build a proper drivers configuration
> > > for sculpt to work on this emulator under 'repos/gems/sculpt/drivers',
> > > and a default-virt_qemu_arm_v8a.sculpt file under 'repos/gems/sculpt'.
> "
> > >
> > > Can you please explain more about this?
> > >
> > > On Tue, 20 Sep, 2022, 7:21 pm Stefan Kalkowski, <
> > > stefan.kalkowski at genode-labs.com> wrote:
> > >
> > >> Hello,
> > >>
> > >> On Thu, Sep 15, 2022 at 10:45:41PM +0530, Divya Sharma wrote:
> > >> > Hello genodians,
> > >> >
> > >> > Based on the suggestion we tried to build sculpt for virt_qemu.
> > >> >
> > >> > We tried to add support for virt qemu and adding it default.sculpt
> file
> > >> but
> > >> > still we are getting error "Board not supported".
> > >>
> > >> Indeed, the support for individual run-scripts might be restricted to
> > >> certain board/kernel combinations only, e.g., because there is no
> > >> sufficient driver support available.
> > >>
> > >> Given the sculpt.run script in 'repos/gems/run/', you'll find the
> > >> restrictions in lines 13-23. Of course you might add the virt_qemu
> > >> platform here. However, you've to build a proper drivers configuration
> > >> for sculpt to work on this emulator under 'repos/gems/sculpt/drivers',
> > >> and a default-virt_qemu_arm_v8a.sculpt file under 'repos/gems/sculpt'.
> > >>
> > >> Alternatively, you can first investigate interactive run-scripts like
> > >> the "demo.run" script, which already supports the virt_qemu_arm_v8a
> > >> platform.
> > >>
> > >> Regards
> > >> Stefan
> > >>
> > >> >
> > >> >
> > >> >
> > >> > On Wed, 14 Sep, 2022, 3:08 pm Divya Sharma, <
> divyasharma26546 at gmail.com
> > >> >
> > >> > wrote:
> > >> >
> > >> > > hello genodians,
> > >> > >
> > >> > > I'm Trying to port Genode OS for i.MX 8MQ boards (arm_v8a).
> > >> > > successfully generated .img file but don't know how to run this
> img
> > >> file
> > >> > > i don't have i.MX board so I have to run on Ubuntu (linux).
> > >> > > I have tried qemu emulator but i think qemu doesn't supported
> board.
> > >> > > (basically want to run genode os for ARM.)
> > >> > >
> > >> > > Please give some guidance on this.
> > >> > >
> > >> > > Thanks & Regards
> > >> > >
> > >>
> > >>
> > >> > _______________________________________________
> > >> > Genode users mailing list
> > >> > users at lists.genode.org
> > >> > https://lists.genode.org/listinfo/users
> > >>
> > >>
> > >> --
> > >> Stefan Kalkowski
> > >> Genode labs
> > >>
> > >> https://github.com/skalk | https://genode.org
> > >>
> > >> _______________________________________________
> > >> Genode users mailing list
> > >> users at lists.genode.org
> > >> https://lists.genode.org/listinfo/users
> > >>
> > >
>
> > _______________________________________________
> > Genode users mailing list
> > users at lists.genode.org
> > https://lists.genode.org/listinfo/users
>
>
> --
> Stefan Kalkowski
> Genode labs
>
> https://github.com/skalk | https://genode.org
>
> _______________________________________________
> Genode users mailing list
> users at lists.genode.org
> https://lists.genode.org/listinfo/users
>
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