[coreboot] vga & serial debug support when building grub2 as payload
jlewis at johnlewis.ie
Wed Sep 25 13:14:42 CEST 2013
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
On 25/09/2013 11:23, Stojsavljevic, Zoran wrote:
> Hello Paul,
> I have the same problem with VGA, I am looking into my
> 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,
> Most of The Time you
should be "intel inside" to be capable to think "out of the box".
FROM: coreboot-bounces at coreboot.org
[mailto:coreboot-bounces at coreboot.org] ON BEHALF OF David Hendricks
SENT: Monday, September 23, 2013 7:36 PM
> TO: Paul Menzel
jstkf2012 at 126.com; coreboot
> SUBJECT: Re: [coreboot] vga & serial debug
support when building grub2 as payload
> On Mon, Sep 23, 2013 at
9:21 AM, Paul Menzel <paulepanter at users.sourceforge.net > wrote:
>> Dear Tank Tang,
>> Am Sonntag, den 22.09.2013, 16:20 +0800
schrieb jstkf2012 at 126.com :
>> > I am a bios engineer from
>> welcome to coreboot! Communicating on mailing lists,
please make sure to
>> follow the netiquette . Especially, please
just send plain text
>> message with no HTML parts.
Unfortunately, I meet 2 questions about building Grub2 as coreboot's
>> > (1)How can I enable vga support during post?
>> > I have
configure the following token:
>> > CONFIG_VGA_ROM_RUN=y
>> > CONFIG_VGA_BIOS_ID="8086,0166"
>> > 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
>> 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
>> > 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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