Thanks Martin and Colin for your help.
I configured the virtio_mmio_nic configuration for virt_qemu_arm_v8a using [1] archive?
But after that i got stuck in the error 
[init] Warning: drivers: no route to service "Uplink" (label="drivers -> virtio_mmio_nic -> ")
[init -> drivers -> virtio_mmio_nic] Error: Uplink-session creation failed (ram_quota=3538944, cap_quota=8, mac_address="52:54:00:12:34:56", tx_buf_size=1638400, rx_buf_size=1638400, label="")

Saying that there is no route for Uplink service because I am not able to set up that, I also tried to find those scripts mentioned by Colin but I could not.
I also went for the following command to find the routes but I could not find the script that needed the modification.

find repos/ -type d -wholename *virtio*
grep -r "src/virtio" repos/


So ,kindly guide me on how to set up the route for the Uplink service and which are those scripts required to be modified for it.
route

Best,
Divya.




[1] repos/os/recipes/pkg/drivers_nic-virt_qemu_arm_v8a

On Tue, Feb 14, 2023 at 6:38 PM Colin Parker <cvparker@gmail.com> wrote:
Hello,

some reason. I assume that an image file with this name is not present,
but without further information about your sculpt setup (package list,
sculpt config, etc.), I cannot say for sure.

I just noticed, that the virt qemu NIC driver binary is not named
nic_drv but virtio_mmio_nic. Maybe this is it!? Are you using this [1]
archive?

From the log:
ROM: [000000004092e000,0000000040987030) mke2fs
ROM: [00000000411cd000,0000000041213918) ncurses.lib.so
ROM: [000000004059d000,00000000405fdce8) nic_router             <-- no "nic_drv" above
ROM: [0000000040e63000,0000000040e64e12) nic_router.xsd
ROM: [0000000040cfc000,0000000040d4a428) nitpicker
...
ROM: [0000000040119000,00000000401312d0) virtio_mmio_fb_drv
ROM: [000000004184d000,0000000041863f70) virtio_mmio_input_drv
ROM: [0000000040d4b000,0000000040d68eb0) virtio_mmio_nic        <----
ROM: [000000004058a000,000000004058a3fb) virtio_mmio_nic.xsd
ROM: [000000004030e000,00000000403460c0) wm
Based on the above snippet I think what Martin says must be the case.
When I have wanted to change the drivers in sculpt, I had to edit the
sculpt_manager component to launch the component I wanted, using the
"binary=" attribute. The Genode team may know a better way though. You may
also need to change default routes to services, which you can obtain from a
run script that uses virtio_mmio_nic.

Hope it helps!

-CP
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