From Fedora Project Wiki

Fedora 21 AArch64 Hardware Support Matrix

Platform Firmware Kernel Console ACPI Network SATA DVD USB PCI-E Virt Notes
APM X-Gene (Mustang)
rh-0.13 kernel-3.17.4-302.fc21 ttyS0 Yes 1Gb
Pass pass
Fail fail
Fail fail
Pass pass
Pass pass
rh-0.13 kernel-3.18.0-1.fc22 ttyS0 Default 1Gb
none
none
none
none
ADM A1100 (Seattle)
ROD0073C kernel-3.17.4-302.fc21 ttySBSA0 Yes 1Gb
none
none
none
none
ROD0073C kernel-3.18.0-1.fc22 ttySBSA0 Default 1Gb
none
none
none
none
QEMU
N/A kernel-3.17.4-302.fc21 ttySBSA0 Yes
none
none
none
none
none
N/A kernel-3.18.0-1.fc22 ttySBSA0 Default
none
none
none
none
none