Re: [coreboot] vga & serial debug support when building grub2 as payload

[John Lewis]

I think that's the same vendor ID as the Pixel, so perhaps the Pixel
VGA bios in "snm_2137.dat" in "3rdparty/mainboard/google/link" will
work?

On 25/09/2013 11:23, Stojsavljevic, Zoran wrote:
> Hello Paul,

David,
> I have the same problem with VGA, I am looking into my

coreboot settings:
> CONFIG_VGA_ROM_RUN=y
>
> CONFIG_VGA_BIOS=y
> CONFIG_VGA_BIOS_ID="8086,0166"

CONFIG_VGA_BIOS_FILE="./src/vbios.bin"
> I do not see any of:

vbios.bin or vgabios.bin in directory src/ I am using Cougar Canyon 2 or
equivalent which is Emerald Lake 2.
> What PCIe VGA should I use (I

think I know how to discover this one)?
> How I can get vbios.bin

for these boards (I assume the vbios.bin) is the same for both of them?
> Thank you,
>
> Zoran
>
> Most of The Time you

should be "intel inside" to be capable to think "out of the box".
>

FROM: [e-mail]
[mailto:[e-mail]] ON BEHALF OF David Hendricks
>

SENT: Monday, September 23, 2013 7:36 PM
> TO: Paul Menzel
> CC:

[e-mail]; coreboot
> SUBJECT: Re: [coreboot] vga & serial debug

support when building grub2 as payload
> On Mon, Sep 23, 2013 at

9:21 AM, Paul Menzel <[e-mail] [2]> wrote:
>
> > Dear Tank Tang,
> >
> > Am Sonntag, den 22.09.2013, 16:20 +0800

schrieb [e-mail] [1]:
> > > I am a bios engineer from

Byosoft.
> > welcome to coreboot! Communicating on mailing lists,

please make sure to
> > follow the netiquette [1]. Especially, please

just send plain text
> > message with no HTML parts.
> > >

Unfortunately, I meet 2 questions about building Grub2 as coreboot's
payload.
> > > (1)How can I enable vga support during post?
> > > I have

configure the following token:
> > > CONFIG_VGA_ROM_RUN=y

CONFIG_VGA_BIOS=y
> > > CONFIG_VGA_BIOS_ID="8086,0166"

CONFIG_VGA_BIOS_FILE="./src/vbios.bin"
> > > But it seems that it doesn't

make sence.Is there something need I to do in Grub2 to support vga.
> >
> > What board do you use?
> >
> > If coreboot successfully runs the VGA

BIOS/Option ROM (and if it is
> > needed), GRUB 2 should be able to

display text on the monitor. I am
> > successfully doing that on the

ASRock E350M1.
> > Do you get graphics with SeaBIOS as a payload and

letting SeaBIOS run
> > the VGA BIOS/Option ROM?
> > > (2)How can I

enable serial prot debug after Grub2 Payload is loaded?
> > > I have add

the following to grub.cfg and use "grub-mkimage -c ./grub.cfg ......."
to make the Grub2.elf.
> > > serial --speed=115200 --unit=0 --word=8

--parity=no --stop=1
> > > terminal_input --append serial

terminal_output --append serial
> > > But it doesn't work after

grub2 payload is called!
> > That should work. Do you get serial

output with coreboot? Do you get
> > serial output from the GRUB

installed on your hard disk?
> Does TankTang also need to set

GRUB_GFXMODE (ie GRUB_GFXMODE=640x480) in grub.cfg?
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