FreeBSD/arm64 is the FreeBSD port to the 64-bit ARM architecture, also known as AArch64 or ARMv8. FreeBSD 11.0 and above include out-of-the-box support for ARMv8, and over 20,000 packages are available in the 3rd party software collection. Cavium's ThunderX is the initial reference platform for the FreeBSD/arm64 port.
- Useful Links
- Known Limitations
FreeBSD Release Engineering builds specific images for Pine64 and rpi3. The Cavium Thunder and SoftIron Overdrive series are supported via the normal build chain. Images for certain other boards can be built by crochet.
The basic FreeBSD/arm64 support is available in FreeBSD-CURRENT and FREEBSD-11-STABLE. (For reference, also see the history of FreeBSD/arm64 commits).
The standard buildworld sequence works:
export MAKEOBJDIRPREFIX=<path-to-suitable-objdir> make buildworld TARGET=arm64
The build sequence for the kernel is a fairly standard one:
export MAKEOBJDIRPREFIX=<path-to-suitable-objdir> make buildkernel TARGET=arm64
This results in an image called 'kernel' created in:
** See the 'Source' section above for the svn-checkout-path.
ARM Foundation Model
The ARMv8 Foundation Model is available from ARM. You must read and accept a click-through license to obtain it. The Foundation model may be run in a Linux virtual machine, or by using the experimental 64-bit Linux emulation support.
QEMU now has aarch64 system mode emulation support. It is available by installing the qemu-devel package or emulators/qemu-devel port.
The Release Engineers build periodic snapshots, including for arm64 on QEMU. Instructions on where to find these are sent to the shapshots mailing list.
See arm64/QEMU for further details on booting FreeBSD/arm64 in QEMU, including links to AArch64 EFI firmware files that are not included with the QEMU port.
The HiKey is a low cost (~$75 - $100 + shipping) ARMv8 board from Linaro.
Pine64 is pretty well supported system.
Raspberry Pi 3 (RPI3)
This section has moved to arm64/rpi3
Cavium's ThunderX is the initial reference target platform for FreeBSD/arm64.
FreeBSD 11.0 supports the ThunderX EVB (evaluation board) and CRB (customer reference board) in SMP mode (48 CPU cores). SATA drives, PCIe expansion cards, and the on-chip network interface are fully supported.
Lenovo ThinkSystem SR330/SR350
SoftIron Overdrive 1000
The FreeBSD 12.0R GENERIC memstick installation image works on the SoftIron Overdrive 1000 but requires opensolaris_load="YES" to be set in /boot/loader.conf. This can be performed at the end of installation or on first boot by typing ESC during the (likely garbled) "Beastie" boot screen, and typing:
load /boot/kernel/kernel load /boot/kernel/opensolaris.ko load /boot/kernel/zfs.ko boot
Otherwise, the first boot will hit mountroot>
Once booted, add "opensolaris_load="YES" to /boot/loader.conf with the editor of your choice.
To suppress the garbled Beastie boot screen, add beastie_disable="YES" to /boot/loader.conf
The power button is the vertical chrome rectangle on the front.
Be cautious not to frequently cut power to the OD1K as it may corrupt the firmware.
SoftIron Overdrive 3000
FreeBSD mostly works, other than the internal dual 10G networking, however support for this is being worked on. In the interim PCIe NICs work.
- Userland SDT DTrace probes (usdt) do not work
- The Cavium ThunderX vnic driver has several issues (PRs 204414, 204415, 206310, 223573, 223575) but it's generally functional
- ACPI is not enabled (PR 209072)
- libc does not provide sbrk and some ports have not been updated to cope (PR 213862)
- Modules with per-VNET static variables will panic upon load, when VIMAGE is enabled (PRs 222314, 223670)
- Much profiling and performance work is still needed