Sounds ike you didn't include necessary modules.
On 22.09.2013 09:14, jstkf2012@126.com wrote:
> Dear Maillist,
> I am a bios engineer from Byosoft.
> I have 3 questions about "grub2 as coreboot's payload".
> (1).how can I enable serial port during post?
> l add following in grub.cfg ,but it seems doesn't make sense.
> //>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> # Enable serial console
> serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
> terminal_input --append serial
> terminal_output --append serial
> //<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> the log shows the serial debug message in coreboot phrase,but there's no
> message about the payload:grub2 .
> (2).USB & PS2 device can't be used under GRUB shell
> I can boot to GRUB SHELL under QEMU emulation,but the usb & ps2 KeyBorad
> can't be used.
> Do I need to add something to support this?
>  
> Thanks,
> TankTang
>  
> 
> 
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