This (below) is the dmesg for a little server that starts UEFI from a thumbdrive then boots and runs from a two disk ZFS mirror.
Code:
Copyright (c) 1992-2018 The FreeBSD Project.
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FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.2-RELEASE-p9 #0: Tue Feb 5 15:30:36 UTC 2019
root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 6.0.0 (tags/RELEASE_600/final 326565) (based on LLVM 6.0.0)
VT(efifb): resolution 1024x768
CPU: Intel(R) Celeron(R) CPU J1900 @ 1.99GHz (2000.05-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x30678 Family=0x6 Model=0x37 Stepping=8
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Features2=0x41d8e3bf<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,TSCDLT,RDRAND>
AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
AMD Features2=0x101<LAHF,Prefetch>
Structured Extended Features=0x2282<TSCADJ,SMEP,ERMS,NFPUSG>
VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID
TSC: P-state invariant, performance statistics
real memory = 8589934592 (8192 MB)
avail memory = 7941373952 (7573 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <ALASKA A M I >
WARNING: L1 data cache covers less APIC IDs than a core
0 < 1
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
Firmware Warning (ACPI): 32/64X length mismatch in FADT/Gpe0Block: 128/32 (20171214/tbfadt-748)
WARNING: Bogus Interrupt Polarity. Assume CONFORMS
WARNING: Bogus Interrupt Polarity. Assume CONFORMS
ioapic0 <Version 2.0> irqs 0-86 on motherboard
SMP: AP CPU #3 Launched!
SMP: AP CPU #2 Launched!
SMP: AP CPU #1 Launched!
Timecounter "TSC" frequency 2000048088 Hz quality 1000
random: entropy device external interface
kbd1 at kbdmux0
netmap: loaded module
module_register_init: MOD_LOAD (vesa, 0xffffffff80ff4580, 0) error 19
random: registering fast source Intel Secure Key RNG
random: fast provider: "Intel Secure Key RNG"
nexus0
cryptosoft0: <software crypto> on motherboard
acpi0: <ALASKA A M I > on motherboard
acpi0: Power Button (fixed)
unknown: I/O range not supported
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
atrtc0: <AT realtime clock> port 0x70-0x77 on acpi0
atrtc0: Warning: Couldn't map I/O.
atrtc0: registered as a time-of-day clock, resolution 1.000000s
Event timer "RTC" frequency 32768 Hz quality 0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff irq 8 on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Event timer "HPET" frequency 14318180 Hz quality 450
Event timer "HPET1" frequency 14318180 Hz quality 440
Event timer "HPET2" frequency 14318180 Hz quality 440
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x408-0x40b on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pcib0: _OSC returned error 0x4
pcib0: Length mismatch for 3 range: 10716fff vs 10717000
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0xf080-0xf087 mem 0xd0000000-0xd03fffff,0xc0000000-0xcfffffff irq 16 at device 2.0 on pci0
vgapci0: Boot video device
ahci0: <AHCI SATA controller> port 0xf070-0xf077,0xf060-0xf063,0xf050-0xf057,0xf040-0xf043,0xf020-0xf03f mem 0xd0716000-0xd07167ff irq 19 at device 19.0 on pci0
ahci0: AHCI v1.30 with 2 3Gbps ports, Port Multiplier not supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich1: <AHCI channel> at channel 1 on ahci0
xhci0: <Intel BayTrail USB 3.0 controller> mem 0xd0700000-0xd070ffff irq 20 at device 20.0 on pci0
xhci0: 32 bytes context size, 64-bit DMA
xhci0: Port routing mask set to 0xffffffff
usbus0 on xhci0
usbus0: 5.0Gbps Super Speed USB v3.0
pci0: <encrypt/decrypt> at device 26.0 (no driver attached)
hdac0: <Intel BayTrail HDA Controller> mem 0xd0710000-0xd0713fff irq 22 at device 27.0 on pci0
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
pcib1: [GIANT-LOCKED]
pcib2: <ACPI PCI-PCI bridge> irq 17 at device 28.1 on pci0
pcib2: [GIANT-LOCKED]
pcib3: <ACPI PCI-PCI bridge> irq 18 at device 28.2 on pci0
pcib3: [GIANT-LOCKED]
pcib4: <ACPI PCI-PCI bridge> irq 19 at device 28.3 on pci0
pcib4: [GIANT-LOCKED]
pci1: <ACPI PCI bus> on pcib4
re0: <RealTek 8168/8111 B/C/CP/D/DP/E/F/G PCIe Gigabit Ethernet> port 0xe000-0xe0ff mem 0xd0604000-0xd0604fff,0xd0600000-0xd0603fff irq 19 at device 0.0 on pci1
re0: Using 1 MSI-X message
re0: Chip rev. 0x4c000000
re0: MAC rev. 0x00000000
miibus0: <MII bus> on re0
rgephy0: <RTL8251 1000BASE-T media interface> PHY 1 on miibus0
rgephy0: none, 10baseT, 10baseT-FDX, 10baseT-FDX-flow, 100baseTX, 100baseTX-FDX, 100baseTX-FDX-flow, 1000baseT-FDX, 1000baseT-FDX-master, 1000baseT-FDX-flow, 1000baseT-FDX-flow-master, auto, auto-flow
re0: Using defaults for TSO: 65518/35/2048
re0: Ethernet address: 70:85:c2:29:64:46
re0: netmap queues/slots: TX 1/256, RX 1/256
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
ppc0: cannot reserve I/O port range
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est1: <Enhanced SpeedStep Frequency Control> on cpu1
est2: <Enhanced SpeedStep Frequency Control> on cpu2
est3: <Enhanced SpeedStep Frequency Control> on cpu3
ZFS filesystem version: 5
ZFS storage pool version: features support (5000)
Timecounters tick every 1.000 msec
hdacc0: <Realtek ALC662 HDA CODEC> at cad 0 on hdac0
hdaa0: <Realtek ALC662 Audio Function Group> at nid 1 on hdacc0
pcm0: <Realtek ALC662 (Rear Analog)> at nid 20 and 24,26 on hdaa0
pcm1: <Realtek ALC662 (Front Analog)> at nid 27 and 25 on hdaa0
hdacc1: <Intel (0x2882) HDA CODEC> at cad 2 on hdac0
hdaa1: <Intel (0x2882) Audio Function Group> at nid 1 on hdacc1
pcm2: <Intel (0x2882) (HDMI/DP 8ch)> at nid 4 on hdaa1
pcm3: <Intel (0x2882) (HDMI/DP 8ch)> at nid 5 on hdaa1
ugen0.1: <0x8086 XHCI root HUB> at usbus0
uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <WDC WD5000LPLX-08ZNTT0 04.01A04> ACS-2 ATA SATA 3.x device
ada0: Serial Number WD-WX11A97055Z3
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 476940MB (976773168 512 byte sectors)
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <WDC WD5000LPLX-22ZNTT0 01.01A01> ACS-2 ATA SATA 3.x device
ada1: Serial Number WD-WX71A880D0VU
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 476940MB (976773168 512 byte sectors)
Trying to mount root from zfs:zroot/ROOT/default []...
uhub0: 7 ports with 7 removable, self powered
Root mount waiting for: usbus0
ugen0.2: <vendor 0x05e3 USB2.0 Hub> at usbus0
uhub1 on uhub0
uhub1: <vendor 0x05e3 USB2.0 Hub, class 9/0, rev 2.00/85.37, addr 1> on usbus0
Root mount waiting for: usbus0
uhub1: 4 ports with 4 removable, self powered
Root mount waiting for: usbus0
ugen0.3: <SanDisk Cruzer Fit> at usbus0
umass0 on uhub1
umass0: <SanDisk Cruzer Fit, class 0/0, rev 2.10/1.00, addr 2> on usbus0
umass0: SCSI over Bulk-Only; quirks = 0xc100
umass0:2:0: Attached to scbus2
da0 at umass-sim0 bus 0 scbus2 target 0 lun 0
da0: <SanDisk Cruzer Fit 1.00> Removable Direct Access SPC-4 SCSI device
da0: Serial Number 4C530002071207106225
da0: 40.000MB/s transfers
da0: 15264MB (31260672 512 byte sectors)
da0: quirks=0x2<NO_6_BYTE>
ugen0.4: <American Power Conversion Back-UPS RS 1350MS FW951.e3 .D USB FWe3> at usbus0
random: unblocking device.
re0: link state changed to DOWN
re0: link state changed to UP
pflog0: promiscuous mode enabled