Re: [coreboot] gigabyte dual bios programming

[bari]

The Gigabyte 785GMT-UD2H has a fully functional dual SPI flash bios 
circuit. Peter's circuit is for boards that leave out one SPI flash 
device and you if wish to use a toggle switch to choose between the SPI 
flash device you wish to boot from.

The Gigabyte 785GMT-UD2H has everything already soldered in place. You 
just need to use the patch for ITE it8720/18 dual bios that Vadim Girlin 
wrote, or something very similar. It worked for him on his Gigabyte 
GA-MA770-UD3 AMD 770 (RX780 / SB700) with ITE IT8718/20.

-Bari

Qing Pei Wang wrote:
> i saw teh method from http://stuge.se/m57sli/ .
> i have some questions:
>
> U9: Populate flash chip.
>
> R509: Remove. (I can not find the from your pic m57sli_soic_detail_labels.jpg )
>
> R89,R130: Populate 0402 100k resistors.
>
> how can i know which register i should move for my own board?
> On Wed, Jul 7, 2010 at 8:05 AM, Qing Pei Wang <[e-mail] 
> > wrote:
> hi peter,
> there used to have too bios chips, but i remove the B_BIOS, just
> leave the M_BIOS which means the main bios .
> I am pretty interested with your method. Is that useful for the
> other Gigabyte mainboards like my 785GMT-UD2H  
>
>
> On Wed, Jul 7, 2010 at 1:30 AM, Peter Stuge <[e-mail]
> <mailto:[e-mail]>> wrote:
>
>     Hi,
>
>     Qing Pei Wang wrote:
>      > i faced a problem about Gigabyte dual bios mainboard. my SF100
>      > programmer can not detect the spi chip unless i removed it from
>      > the mainboard,
>     ..
>      > Is there any idea about this? it's pretty strange about these
>     dual
>      > bios things.
>      > Any suggestion will be welcome for me.
>
>     Please see
>     http://www.mail-archive.com/[e-mail]/msg23613.html
>     http://www.mail-archive.com/[e-mail]/msg05929.html
>
>     And there's info about this as implemented on the GA-M57SLI-S4 board
>     on http://stuge.se/m57sli/
>
>     Do you have two flash chips populated, or only a single one?
>
>
>     //Peter
>
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>
> -- 
> Wang Qing Pei
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