9.0-RC1 fails to boot ("run_interrupt_driven_hooks: still waiting...")

FreeBSD 9.0-RC1 doesn't boot on my Tyan S7025 system: it gets stuck at 
xpt_config:

run_interrupt_driven_hooks: still waiting after 60 seconds for xpt_config
run_interrupt_driven_hooks: still waiting after 120 seconds for xpt_config
run_interrupt_driven_hooks: still waiting after 180 seconds for xpt_config
run_interrupt_driven_hooks: still waiting after 240 seconds for xpt_config
run_interrupt_driven_hooks: still waiting after 300 seconds for xpt_config

Booting with -v doesn't produce any more information during the timeout.


The first few lines of dmesg:

CPU: Intel(R) Xen(R) CPU     E5620 _at_ 2.40GHz (2400.13-MHz K8-class CPU)
  Origin = "GenuineIntel" Id = 0x206c2 Family = 6 Model = 2c Stepping = 2
  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=0x29ee3ff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSE3,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,POPCNT,AESNI>
  AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant, performance statistics
real memory = 17179869184 (16384MB)
avail memory = 12366131200 (11793 MB)
Event timer "LAPIC" quality 600
ACPI APIC Table: <033011 APIC1334>
FreeBSD/SMP: Multiprocessor System Detected: 16 CPUs
FreeBSD/SMP: 2 package(s) x 4 core(s) x 2 SMT threads
cpu0 (BSP): APIC ID:   0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 2
cpu3 (AP): APIC ID: 3
cpu4 (AP): APIC ID: 18
cpu5 (AP): APIC ID: 19
cpu6 (AP): APIC ID: 20
cpu7 (AP): APIC ID: 21
cpu8 (AP): APIC ID: 32
cpu9 (AP): APIC ID: 33
cpu10 (AP): APIC ID: 34
cpu11 (AP): APIC ID: 35
cpu12 (AP): APIC ID: 50
cpu13 (AP): APIC ID: 51
cpu14 (AP): APIC ID: 52
cpu15 (AP): APIC ID: 53
ioapic0: Changing APIC ID to 6
ioapic1: Changing APIC ID to 7
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard
ioapic2 <Version 2.0> irqs 48-71 on motherboard
kbd1 at kbdmux0
acpi0: <033011 XSDT1334> on motherboard
acpi0: Overriding SCI from IRQ 9 to IRQ 20
acpi0: Power Button (fixed)
acpi0: reservation of 0, a000 (3) failed
acpi0: reservation of 100000, bff00000 (3) failed
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
cpu4: <ACPI CPU> on acpi0
cpu5: <ACPI CPU> on acpi0
cpu6: <ACPI CPU> on acpi0
cpu7: <ACPI CPU> on acpi0
cpu8: <ACPI CPU> on acpi0
cpu9: <ACPI CPU> on acpi0
cpu10: <ACPI CPU> on acpi0
cpu11: <ACPI CPU> on acpi0
cpu12: <ACPI CPU> on acpi0
cpu13: <ACPI CPU> on acpi0
cpu14: <ACPI CPU> on acpi0
cpu15: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PBI bus> on pbib0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci9: <ACPI PBI bus> on pbib1
pcib2: <ACPI PCI-PCI bridge> at device 3.0 on pci0
pci8: <ACPI PBI bus> on pbib2
pci8: <mass storage> at device 0.0 (no driver attached)
pcib3: <ACPI PCI-PCI bridge> at device 5.0 on pci0
pci7: <ACPI PBI bus> on pbib3
pcib4: <ACPI PCI-PCI bridge> at device 7.0 on pci0
pci6: <ACPI PBI bus> on pbib4
pcib5: <ACPI PCI-PCI bridge> at device 9.0 on pci0
pci5: <ACPI PBI bus> on pbib5
pci0: <base peripheral, interrupt controller> at device 20.0 (no driver 
attached)
pci0: <base peripheral, interrupt controller> at device 20.1 (no driver 
attached)
pci0: <base peripheral, interrupt controller> at device 20.2 (no driver 
attached)
pci0: <base peripheral, interrupt controller> at device 20.3 (no driver 
attached)
uhci0: <Intel 82801JI (ICH10) USB controller USB-D> port 0xb400-0xb41f 
irq 16 at device 26.0 on pci0
uhci0: LegSup = 0x2f00
usbus0: <Intel 82801JI (ICH10) USB controller USB-D> on uhci0
uhci1: <Intel 82801JI (ICH10) USB controller USB-E> port 0xb480-0xb49f 
irq 21 at device 26.1 on pci0
uhci1: LegSup = 0x2f00
usbus1: <Intel 82801JI (ICH10) USB controller USB-E> on uhci1
uhci2: <Intel 82801JI (ICH10) USB controller USB-F> port 0xb800-0xb81f 
irq 19 at device 26.2 on pci0
uhci0: LegSup = 0x2f00
usbus2: <Intel 82801JI (ICH10) USB controller USB-F> on uhci2
ehci0: <Intel 82801JI (ICH10) USB 2.0 controller USB-B> mem 
0xfbbf4000-0xfbbf43ff irq 18 at device 26.7 on pci0
usbus3: EHCI version 1.0
usbus3: <Intel 82801JI (ICH10) USB 2.0 controller USB-B> on ehci0
hdac0: <Intel 82801JI High Definition Audio Controller> mem 
0xfbbf0000-0xfbbf3fff irq 22 at device 27.0 on pci0
pcib6: <ACPI PCI-PCI bridge> irq 17 at device 28.0 on pci0
pci4: <ACPI PCI bus> on pcib6
pcib7: <ACPI PCI-PCI bridge> on irq 17 at device 28.4 on pci0
pci3: <ACPI PCI bus> on pcib7
em0: <Intel(R) PRO/1000 Network Connection 7.2.3> mem 
0xfbde000-0xfbdfffff,0xfbddc000-0xfbddffff irq 16 at device 0.0 on pci3
em0: Using MSIX interrupts with 3 vectors
em0: Ethernet address: xx:xx:xx:xx:xx:xx
pcib8: <ACPI PCI-PCI bridge> irq 16 at device 28.5 on pci0
pci2: <ACPI PCI bus> on pcib8
em1: <Intel(R) PRO/1000 Network Connection 7.2.3> port 0xec00-0xec1f mem 
0xfbce0000-0xfbcfffff,0xfbcdc000-0xfbcdfff irq 17 at device 0.0 on pci2
em1: Using MSIX interrupts with 3 vectors
em1: Ethernet address: xx:xx:xx:xx:xx:xx
uhci3: <Intel 82801JI (ICH10) USB controller USB-A> port 0xb880-0xb89f 
irq 23 at device 29.0 on pci0
uhci3: LegSup = 0x2f00
usbus4: <Intel 82801JI (ICH10) USB controller USB-A> on uhci3
uhci4: <Intel 82801JI (ICH10) USB controller USB-B> port 0xbc00-0xbc1f 
irq 19 at device 29.1 on pci0
uhci4: LegSup = 0x2f00
usbus5: <Intel 82801JI (ICH10) USB controller USB-B> on uhci4
uhci5: <Intel 82801JI (ICH10) USB controller USB-C> port 0xc000-0xc01f 
irq 18 at device 29.2 on pci0
uhci5: LegSup = 0x2f00
usbus6: <Intel 82801JI (ICH10) USB controller USB-C> on uhci5
ehci1: <Intel 82801JI (ICH10) USB 2.0 controller USB-A> mem 
0xfbbf6000-0xfbbf63ff irq 18 at device 29.7 on pci0
usbus7: EHCI version 1.0
usbus7: <Intel 82801JI (ICH10) USB 2.0 controller USB-A> on ehci1
pcib9: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci1: <ACPI PCI bus> on pbib9
vgapci0: <VGA-compatible display> port 0xdc00-0xdc7f mem 
0xfb000000-0xfb7fffff,0xfafe0000-0xfaffffff irq 16 at device 0.0 on pci1
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
ahci0: <Intel ICH10 AHCI SATA controller> port 
0xc080-0xc087,0xc880-0xc883,0xc800-xc807,0xc480-0xc483,0xc400-0xc41f mem 
0xfbbf8000-0xfbbf87ff irq 19 at device 31.2 on pci0
ahci0: AHCI v1.20 with 6 3Gbps ports, Port Multiplier not supported
ahcich0: <ACPI channel> at channel 0 on ahci0
ahcich1: <ACPI channel> at channel 1 on ahci0
ahcich2: <ACPI channel> at channel 2 on ahci0
ahcich3: <ACPI channel> at channel 3 on ahci0
ahcich4: <ACPI channel> at channel 4 on ahci0
ahcich5: <ACPI channel> at channel 5 on ahci0
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
pcib10: <ACPI Host-PCI bridge> on acpi0
pci128: <ACPI PCI bus> on pcib10
pcib11: <PCI-PCI bridge> at device 0.0 on pci128
pci132: <PCI bus> on pcib11
pcib12: <ACPI PCI-PCI bridge> at device 1.0 on pci128
pci131: <ACPI PCI bus> on pcib12

-- 
Bruce Cran