virsh create fails with "Unable to find any firmware to satisfy 'efi'" for aarch64 guest on macOS

[Ján Tomko]

On a Friday in 2021, Nathan Vander Wilt wrote:
>I am having trouble when I `virsh create test.xml` with an aarch64
>guest on a macOS (Apple Silicon) host. I've wrestled with a variety of
>issues but the one I simply haven't been able to get past is this
>regarding the UEFI firmware:
>
>error: Failed to create domain from test.xml
>error: operation failed: Unable to find any firmware to satisfy 'efi'
>
>This is with `virsh --version` of 7.9.0 and `qemu-system-aarch64
>--version` of 6.1.0, both installed via the common `brew` tool from
>its main 'homebrew/core' tap. I have confirmed that the loader/nvram
>files referenced do exist.
>
>Running `qemu-system-aarch64 -L help` outputs two lines:
>
>/opt/homebrew/Cellar/qemu/6.1.0_1/bin/../share/qemu-firmware
>/opt/homebrew/Cellar/qemu/6.1.0_1/bin/../share/qemu
>
>The …/share/qemu-firmware folder does NOT exist, but symlinking it to
>a …/share/qemu/firmware folder which does exist does not improve the
>situation.
>
>I have also tried renaming the …/share/qemu/firmware folder (e.g. `mv
>firmware zzz-firmware`) as some notes I found led me to believe that
>libvirst might ignore my loader/nvram settings entirely if QEMU had
>the "new" firmware JSON configuration stuff there? But again no
>improvement….
>
>
>How can I debug this further? What should I try next?
>
>thanks,
>-natevw

Can you try with the latest libvirt?
7.10.0-rc2 was just tagged today and should be out this week:
https://listman.redhat.com/archives/libvirt-announce/2021-November/msg00002.html

Andrea did some fixes that are supposed to help with Apple Silicon:
https://gitlab.com/libvirt/libvirt/-/issues/168

Jano
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