EPIA Linuxbios strangeness
SONE Takeshi
ts1 at tsn.or.jp
Mon Aug 18 03:15:00 CEST 2003
On Sun, Aug 17, 2003 at 01:12:29PM -0700, Steve Gehlbach wrote:
> SONE Takeshi wrote:
>
> >Setting bit 1 of ISA bridge register 4F does a system reset.
~~~~~
Typo, bit 0.
> >I have these lines instead of /sbin/reboot in /etc/init.d/reboot
> >(Debian system).
> >
> > sleep 1
> > setpci -s 0:11.0 4f.b=9
> >
>
> From the datasheet:
>
> Via VT8231 fn 0
> Offset 4F ?PCI Bus and CPU Interface Control ..........RW
> ----------------------------------------------------------
>
> 7-4 Reserved ................always reads 0
> 3 CPU Reset Source
> 0 Use CPURST as CPU Reset..default
> 1 Use INIT# as CPU Reset
> 2 Config Command Reg Rx04 Access (Test Only)
> 0 Normal:Bits 0-1=RO,Bit 3=RW...default
> 1 Test Mode:Bits 0-1=RW,Bit-3=RO
> 1 IRDY #Wait States
> 0 0 Wait States.............default
> 1 1 WaitState
> 0 Software PCI Reset ...write 1 to generate PCI reset
>
> What about the ACPI I/O space (set same as Award BIOS, I think, 0x4000),
> in particular 0x4002, 0x4003? Anyway this can be used?
I use it only for power-off.
It does have a reset function, but it didn't always work for me.
--
Takeshi
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