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On Wed, Aug 29, 2007 at 11:43:19PM +1000, Jonathan Gray wrote:
> The following makes use of ACPI to reboot a machine instead
> of the traditional keyboard controller/triple fault dance.
> The old method does not work in at least some setups and
> this should be preferable if ACPI is available.
>
[...]
>
> And report the messages the kernel prints after a reboot
> has been started (messages in blue).
>
> Some artifical delays have been added to assist in being
> able to read messages before the machine hopefully reboots.
>

reboots without a problem on my ibm r50e:

fadt hdr_rev: 3, reset_reg.addr: 0xcf9, flags: 0x2ad
Attempting to reboot via ACPI in 10 seconds...

dmesg:
OpenBSD 4.2-current (GENERIC) #0: Sat Sep 1 09:14:19 CEST 2007
przemek@neptune.homenet:/home/przemek/devel/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Celeron(R) M processor 1.40GHz ("GenuineIntel" 686-class) 1.40 GHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MC A,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM, SBF
real mem = 526872576 (502MB)
avail mem = 501792768 (478MB)
User Kernel Config
UKC> disable apm0
307 apm0 disabled
UKC> enable acpi
396 acpi0 enabled
UKC> quit
Continuing...
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 12/08/06, BIOS32 rev. 0 @ 0xfd740, SMBIOS rev. 2.33 @ 0xe0010 (53 entries)
bios0: vendor IBM version "1WET90WW (2.10 )" date 12/08/2006
bios0: IBM 1834S5G
pcibios0 at bios0: rev 2.1 @ 0xfd6d0/0x930
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdeb0/256 (14 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371FB ISA" rev 0x00)
pcibios0: PCI bus #3 is the last bus
bios0: ROM list: 0xc0000/0xd000! 0xcd000/0x1000 0xce000/0x1000 0xdc000/0x4000! 0xe0000/0x10000
acpi0 at mainbus0: rev 2
acpi0: tables DSDT FACP SSDT ECDT TCPA BOOT
acpitimer at acpi0 not configured
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 2 (PCI1)
acpiec at acpi0 not configured
acpicpu at acpi0 not configured
acpitz at acpi0 not configured
acpibtn at acpi0 not configured
acpibtn at acpi0 not configured
acpibat at acpi0 not configured
acpiac at acpi0 not configured
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82852GM Hub-PCI" rev 0x02
"Intel 82852GM Memory" rev 0x02 at pci0 dev 0 function 1 not configured
"Intel 82852GM Configuration" rev 0x02 at pci0 dev 0 function 3 not configured
vga1 at pci0 dev 2 function 0 "Intel 82852GM AGP" rev 0x02: aperture at 0xe0000000, size 0x8000000
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
"Intel 82852GM AGP" rev 0x02 at pci0 dev 2 function 1 not configured
uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x01: irq 11
uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x01: irq 11
uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x01: irq 11
ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x01: irq 11
usb0 at ehci0: USB revision 2.0
uhub0 at usb0: Intel EHCI root hub, rev 2.00/1.00, addr 1
ppb0 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x81
pci1 at ppb0 bus 2
cbb0 at pci1 dev 0 function 0 "TI PCI1510 CardBus" rev 0x00: irq 11
iwi0 at pci1 dev 2 function 0 "Intel PRO/Wireless 2200BG" rev 0x05: irq 11, address 00:12:f0:f1:25:08
fxp0 at pci1 dev 8 function 0 "Intel PRO/100 VE" rev 0x81, i82562: irq 11, address 00:0a:e4:37:7c:d8
inphy0 at fxp0 phy 1: i82562ET 10/100 PHY, rev. 0
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 3 device 0 cacheline 0x8, lattimer 0xb0
pcmcia0 at cardslot0
ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x01
pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x01: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <HTS541040G9AT00>
wd0: 16-sector PIO, LBA, 38154MB, 78140160 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <HL-DT-ST, DVDRAM GSA-4080N, 0X21> SCSI0 5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x01: irq 11
iic0 at ichiic0
auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x01: irq 11, ICH4 AC97
ac97: codec id 0x41445374 (Analog Devices AD1981B)
ac97: codec features headphone, 20 bit DAC, No 3D Stereo
audio0 at auich0
"Intel 82801DB Modem" rev 0x01 at pci0 dev 31 function 6 not configured
usb1 at uhci0: USB revision 1.0
uhub1 at usb1: Intel UHCI root hub, rev 1.00/1.00, addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2: Intel UHCI root hub, rev 1.00/1.00, addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3: Intel UHCI root hub, rev 1.00/1.00, addr 1
isa0 at ichpcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
lpt2 at isa0 port 0x3bc/4: polled
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
biomask effd netmask effd ttymask ffff
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
uhidev0 at uhub2 port 1 configuration 1 interface 0
uhidev0: Logitech USB-PS/2 Optical Mouse, rev 2.00/20.00, addr 2, iclass 3/1
ums0 at uhidev0: 3 buttons and Z dir.
wsmouse1 at ums0 mux 0
dkcsum: wd0 matches BIOS drive 0x80
root on wd0a swap on wd0b dump on wd0b

--
Przemyslaw Nowaczyk <p_nowaczyk@o2.pl>
CS student @ Poznan University of Technology
http://www.student.put.poznan.pl/~przemyslaw.nowaczyk/