The SoftIron OverDrive 1000 is an arm64 development platform with a quad-core AMD a1100 CPU, 8GB of RAM, and a 1TB HDD. FreeBSD 11.1 and later nearly "just work" out of the box on the OverDrive 1000.
The system console is provided by a USB-Serial converter available via a USB-B port on the back panel. The VID:DID is 2e02:1000 and it is handled by the umodem(4) driver. The system serial number is recorded in the USB sernum field. Baud rate setting is ignored.
dmesg
KDB: debugger backends: ddb
KDB: current backend: ddb
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FreeBSD 12.0-CURRENT #2 5851e7d714d(HEAD)-dirty: Tue Jun 20 17:41:40 EDT 2017
root@od1000:/usr/obj/root/freebsd/sys/GENERIC arm64
FreeBSD clang version 4.0.0 (tags/RELEASE_400/final 297347) (based on LLVM 4.0.0)
WARNING: WITNESS option enabled, expect reduced performance.
VT: init without driver.
Starting CPU 1 (1)
Starting CPU 2 (200)
Starting CPU 3 (201)
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
random: unblocking device.
random: entropy device external interface
kbd0 at kbdmux0
ofwbus0: <Open Firmware Device Tree>
simplebus0: <Flattened device tree simple bus> on ofwbus0
clk_fixed0: <Fixed clock> on simplebus0
clk_fixed1: <Fixed clock> on simplebus0
clk_fixed2: <Fixed clock> on simplebus0
clk_fixed3: <Fixed clock> on simplebus0
clk_fixed4: <Fixed clock> on simplebus0
clk_fixed5: <Fixed clock> on simplebus0
clk_fixed6: <Fixed clock> on simplebus0
clk_fixed7: <Fixed clock> on simplebus0
clk_fixed8: <Fixed clock> on simplebus0
clk_fixed9: <Fixed clock> on simplebus0
clk_fixed10: <Fixed clock> on simplebus0
psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
gic0: <ARM Generic Interrupt Controller> mem 0xe1110000-0xe1110fff,0xe112f000-0xe1130fff,0xe1140000-0xe114ffff,0xe1160000-0xe116ffff irq 4 on ofwbus0
gic0: pn 0x2, arch 0x2, rev 0x1, implementer 0x43b irqs 448
gicv2m0: <ARM Generic Interrupt Controller MSI/MSIX> mem 0x80000-0x80fff on gic0
generic_timer0: <ARMv8 Generic Timer> irq 5,6,7,8 on ofwbus0
Timecounter "ARM MPCore Timecounter" frequency 250000000 Hz quality 1000
Event timer "ARM MPCore Eventtimer" frequency 250000000 Hz quality 1000
cpulist0: <Open Firmware CPU Group> on ofwbus0
cpu0: <Open Firmware CPU> on cpulist0
cpu1: <Open Firmware CPU> on cpulist0
cpu2: <Open Firmware CPU> on cpulist0
cpu3: <Open Firmware CPU> on cpulist0
pmu0: <Performance Monitoring Unit> irq 0,1,2,3 on ofwbus0
ahci0: <AHCI SATA controller> mem 0xe0300000-0xe03effff irq 9 on simplebus0
ahci0: AHCI v1.30 with 8 6Gbps ports, Port Multiplier supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich1: <AHCI channel> at channel 1 on ahci0
uart0: <PrimeCell UART (PL011)> mem 0xe1010000-0xe1010fff irq 13 on simplebus0
uart0: console (115200,n,8,1)
pcib0: <Generic PCI host controller> mem 0xf0000000-0xffffffff on simplebus0
pci0: <PCI bus> on pcib0
pcib1: <PCI-PCI bridge> at device 2.2 on pci0
pci1: <PCI bus> on pcib1
xhci0: <XHCI (generic) USB 3.0 controller> mem 0x40100000-0x4010ffff,0x40110000-0x40110fff,0x40111000-0x40111fff at device 0.0 on pci1
xhci0: 32 bytes context size, 64-bit DMA
usbus0 on xhci0
pcib2: <PCI-PCI bridge> at device 2.3 on pci0
pci2: <PCI bus> on pcib2
mskc0: <Marvell Yukon 88E8059 Gigabit Ethernet> port 0x1000-0x10ff mem 0x40000000-0x40003fff at device 0.0 on pci2
msk0: <Marvell Technology Group Ltd. Yukon Optima Id 0xbc Rev 0x01> on mskc0
msk0: Using defaults for TSO: 65518/35/2048
msk0: Ethernet address: xx:xx:xx:xx:xx:xx
miibus0: <MII bus> on msk0
e1000phy0: <Marvell PHYG65G Gigabit PHY> PHY 0 on miibus0
e1000phy0: none, 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-master, 1000baseT-FDX, 1000baseT-FDX-master, auto, auto-flow
cryptosoft0: <software crypto>
Timecounters tick every 1.000 msec
usbus0: 5.0Gbps Super Speed USB v3.0
ugen0.1: <0x1b73 XHCI root HUB> at usbus0
uhub0: <0x1b73 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
ada0 at ahcich1 bus 0 scbus1 target 0 lun 0
ada0: <ST1000DM003-1SB10C CC43> ATA8-ACS SATA 3.x device
ada0: Serial Number Z9A2CH72
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 953869MB (1953525168 512 byte sectors)
ada0: quirks=0x1<4K>
Release APs
CPU 0: ARM Cortex-A57 r1p2 affinity: 0 0
Instruction Set Attributes 0 = <AES+PMULL,SHA1,SHA2,CRC32>
Instruction Set Attributes 1 = <0>
Processor Features 0 = <AdvSIMD,Float,EL3 32,EL2 32,EL1 32,EL0 32>
Processor Features 1 = <0>
Memory Model Features 0 = <4k Granule,64k Granule,MixedEndian,S/NS Mem,16bit ASID,16TB PA>
Memory Model Features 1 = <>
Debug Features 0 = <2 CTX Breakpoints,4 Watchpoints,6 Breakpoints,PMUv3,Debug v8>
Debug Features 1 = <0>
Auxiliary Features 0 = <0>
Auxiliary Features 1 = <0>
CPU 1: ARM Cortex-A57 r1p2 affinity: 0 1
CPU 2: ARM Cortex-A57 r1p2 affinity: 2 0
CPU 3: ARM Cortex-A57 r1p2 affinity: 2 1
WARNING: WITNESS option enabled, expect reduced performance.
Trying to mount root from ufs:/dev/ada0p2 [rw]...
uhub0: 4 ports with 4 removable, self powered
warning: no time-of-day clock registered, system time will not be set accurately
pciconf -lv
hostb0@pci0:0:0:0: class=0x060000 card=0x1a001022 chip=0x1a001022 rev=0x00 hdr=0x00
vendor = 'Advanced Micro Devices, Inc. [AMD]'
class = bridge
subclass = HOST-PCI
hostb1@pci0:0:2:0: class=0x060000 card=0x00000000 chip=0x1a011022 rev=0x00 hdr=0x00
vendor = 'Advanced Micro Devices, Inc. [AMD]'
class = bridge
subclass = HOST-PCI
pcib1@pci0:0:2:2: class=0x060400 card=0x12341022 chip=0x1a021022 rev=0x00 hdr=0x01
vendor = 'Advanced Micro Devices, Inc. [AMD]'
class = bridge
subclass = PCI-PCI
pcib2@pci0:0:2:3: class=0x060400 card=0x12341022 chip=0x1a021022 rev=0x00 hdr=0x01
vendor = 'Advanced Micro Devices, Inc. [AMD]'
class = bridge
subclass = PCI-PCI
xhci0@pci0:1:0:0: class=0x0c0330 card=0x00001b73 chip=0x10091b73 rev=0x02 hdr=0x00
vendor = 'Fresco Logic'
device = 'FL1009 USB 3.0 Host Controller'
class = serial bus
subclass = USB
mskc0@pci0:2:0:0: class=0x020000 card=0x438111ab chip=0x438111ab rev=0x00 hdr=0x00
vendor = 'Marvell Technology Group Ltd.'
device = 'Yukon Optima 88E8059 [PCIe Gigabit Ethernet Controller with AVB]'
class = network
subclass = ethernet
memory
Ships with 2x 4GB DDR4-2133 UDIMMs -- Crucial model CT4G4DFS8213.C8FBD1