[SerialICE] Bricking (and unbricking) your board.

[Joseph Smith]

On 07/06/2010 05:58 PM, Myles Watson wrote:
> I was surprised how easy it was to brick my board.  These ideas might
> be useful to somebody:
>
> Before you start messing with PCI&  I/O values that might keep their state:
>
> - have a lspci -vvvxxx from the factory BIOS
> - record as much of the boot process from the factory BIOS as possible
>
> I wanted to collect the bit masks from my factory BIOS, so I modified
> the filter to return 0x0 and then 0xffffffff for the PCI registers.
> That way I could see which bits were being changed.  After some of the
> registers were changed, I couldn't boot the board with Coreboot or the
> factory BIOS.  I used SerialICE to set the PCI values to what they
> were in a saved run of the factory BIOS, and it booted again.
>
Wow that is interesting. Even after you disconnected power (ATX 
connector) and cmos battery it would still keeps those values?

-- 
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org