[PATCH 0/4] fs: Add 9P filesystem support over virtio

[Tom Rini]

On Mon, Jul 06, 2026 at 09:54:42PM +0000, Kuan-Wei Chiu wrote:

> Add 9P network filesystem support to U-Boot.
> 
> It allows U-Boot to directly mount host directories in virtualization
> environments via virtio.
> 
> The functionality has been verified on qemu arm64 by successfully
> loading a Linux kernel image and an initramfs image via 9P, and booting
> to the Linux shell.
> 
> To test with QEMU:
>   -fsdev local,id=fsdev0,path=/path/to/host/dir,security_model=none \
>   -device virtio-9p-device,fsdev=fsdev0,mount_tag=rootfs
> 
> U-Boot usage:
>   => virtio scan
>   => ls 9p - /
>   => load 9p - $kernel_addr_r /Image
>   => load 9p - $ramdisk_addr_r /initramfs.cpio
>   => booti $kernel_addr_r $ramdisk_addr_r:$filesize $fdtcontroladdr

Neat. Can you please update this to include docs and tests (and likely
updating u-boot-test-hooks so QEMU is started with the required options?
We already have a bit of python so that we can pass a build directory
over to QEMU for TFTP tests, iirc). Thanks!

-- 
Tom
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