Re: [coreboot] [PATCH] workaround v2 VIA ROMCC breakage

[ron minnich]

On Thu, Oct 16, 2008 at 9:36 AM, Rudolf Marek  wrote:
> The reason why exactly this needs to be handled in rom stage is that the
> shadow registers needs to be filled _before_ PCI reset, because
> PCI reset will force the internal microcontroller to reload with this
> configuration. Its not much documented, only in programming guide,
> and there is just assembly code and some strange English ;) they really
> mention that the controller should be reloaded when the device enters D0 via
> PCIRST#. Dont know if for example some ->D3 and ->D0 transition will work or
> not.

FWIW, this is what stage2 is for in v3. Just this kind of thing.

ron