Re: [coreboot] Ivy Bridge desktop support

[Nico Huber]

Hello Paul,

Am 02.04.2013 11:12, schrieb Paul Menzel:
> Am Sonntag, den 31.03.2013, 21:10 +0200 schrieb Paul Menzel:
> > Am Samstag, den 30.03.2013, 19:57 +0100 schrieb Nico Huber:
> > > I'm looking forward to write a port for my Ivy Bridge desktop system based
> > > on this board: Intel DH77EB (codenamed Eb Lake, [1]). It comes with the H77
> > > platform controller hub (PCH) and a Winbond W83677HG super I/O chip (build
> > > by Nuvoton as NCT6775F, [2]). I'm using it with a Core i3-3225 processor [3].
> >
> > awesome news! Best luck with this!
> > > I've got the datasheet for the super I/O, so writing support for it should
> > > be no problem.
> >
> > The ASRock E350M1 [4] also uses the Nuvoton NCT6775F. Currently the code
> > from the Winbond W83627HF [5].
> > device pci 14.3 on # LPC        0x439d
> >     chip superio/winbond/w83627hf
> >
> > Serial works for me. The only problem that might be related from any
> > incompatibilities is, that a PS/2 keyboard connected to the shared PS/2
> > port does not work correctly, meaning, entering a character the
> > characters is displayed several times more. Entering »n«, I get
> > »nnnnnnnn« for example. Alvaro, having a ASRock E350M1/USB3, also uses a
> > PS/2 keyboard *but* has no problems with this at all. So I have no idea
> > if this is related to the Super I/O or not.

Sounds weird. But something I can't test / run into: My board doesn't even
have a PS/2 port.
> Please note that Martin Roth pointed out to me, that when looking at the
> the ASRock E350M1, one actually finds that the Nuvoton NCT5572D is used.
> Both superiotool and Linux’ w83627ehf are incorrect.
>     superiotool r4.0-3888-gce9f8be
>     Found Nuvoton NCT6775F (B) (id=0xb473) at 0x2e
>
> And if you know what you have to look for, you also find that this was
> known all time along [8].
>     The board has a socketed SPI flash BIOS chip and a serial port
>     header. The SIO is Nuvoton NCT5572D. Using coreboot's existing
>     Winbond w83627hf is a good enough match to get the serial port
>     and keyboard working.

Uh, does this mean that both chips share the same ID? I get the same output
from superiotool:
    Found Nuvoton NCT6775F (B) (id=0xb473) at 0x2e
My chip is labeled W83677HG and I vaguely remember that I saw on a web page
that this is a NCT6775F. But I can't find the page anymore :(
Also, W83677HG sounds more like NCT6775F than NCT5572D.

Thanks,
Nico
> > > [1] http://ark.intel.com/products/59505/Intel-Desktop-Board-DH77EB
> > >
> > > [2] http://www.nuvoton.com/NuvotonMOSS/Community/ProductInfo.aspx?tp_GUID=746a4e...
> > >
> > > [3] http://ark.intel.com/products/65692/Intel-Core-i3-3225-Processor-3M-Cache-3_...
> >
> > [4] http://www.coreboot.org/ASRock_E350M1
> >
> > [5] http://review.coreboot.org/gitweb?p=coreboot.git;a=blob;f=src/mainboard/asro...
> >
> > [6] http://review.coreboot.org/#/c/2942/
> >
> > [7] http://review.coreboot.org/#/c/2943/
>
> [8]  http://review.coreboot.org/gitweb?p=coreboot.git;a=commit;h=63896e75b42697a8...