Am 2. Oktober 2024 15:06:01 UTC schrieb Pavel Pisa <p...@fel.cvut.cz>:
>Dear Nikita and other,
>
>my student Matyas Bobek has chosen to work
>on QEMU CAN support in a frame of his study
>final project.
>
>We have identified iMX6 FlexCAN as the next interesting
>CAN controller for emulation.
I'd be interested in emulating FlexCAN as well! Is there any repository for a
sneak preview?
>One of our industrial partners
>is using iMX6 based system with CAN and iMX6 SabreLite
>is supported by QEMU. iMX6 is often used in industry
>still and FlexCAN has use even for iMX8 emulation
>if it is added into QEMU in the future.
As luck would have it, QEMU will support i.MX 8M Plus in the upcoming release:
<https://lore.kernel.org/qemu-devel/20250225180510.1318207-32-peter.mayd...@linaro.org/>
I'm more than happy to integrate FlexCAN emulation!
>
>In the preparatory work, we want to setup
>shared directory between host and guest
>kernel using 9P FS on PCI virtio.
>
>The development environment is based on current
>mainline QEMU and mainline Linux kernel sources.
>
>We use standard QEMU options
>
> -virtfs local,path=shareddir,security_model=none,mount_tag=shareddir
>
>and the 1af4:1009 is seen by monitor command "info pci"
>but on the guest kernel side only "16c3:abcd" DWC_usb3 / PCIe bridge
>is seen but none from the mapped devices, virtio (1af4:1009),
>CTU CAN FD, Kvaser CAN.
Should be fixed in master / QEMU 10.0 by
<https://lore.kernel.org/qemu-devel/20250225180510.1318207-30-peter.mayd...@linaro.org/>
>
>The imx6q-sabrelite DTS is used with standard device-tree
>
>https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/nxp/imx/imx6q-sabrelite.dts
>
>We hope that all required drivers are enabled
>in the kernel. But it is possible that something
>has been overlooked.
>
>Do you have some hint or some kernel
>and QEMU working example for iMX6 PCIe
>device mapping?
When adding a PCI device via command line, add `bus=dw-pcie` as an additional
option as a workaround for earlier QEMUs.
Best regards,
Bernhard
>
>Thanks in advance.
>
>Best wishes,
>
> Pavel
>--
> Pavel Pisa
> phone: +420 603531357
> e-mail: p...@cmp.felk.cvut.cz
> Department of Control Engineering FEE CVUT
> Karlovo namesti 13, 121 35, Prague 2
> university: http://control.fel.cvut.cz/
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>
