For gentoo linux where to get this file for boot if=pflash,unit=0,readonly=on,file=/usr/share/edk2/OvmfX64/OVMF_CODE_4M.fd

 https://forums.gentoo.org/viewtopic.php?t=1175181

qemu-system-x86_64 \

        -m 8G -smp 4 -cpu host -accel kvm -vga virtio -smbios type=0,uefi=on \

        -drive if=pflash,unit=0,readonly=on,file=di-amd64-console-20260823T153057Z.qcow2,format=qcow2 \

        -drive file=di-amd64-console-20260823T153057Z.qcow2 &