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grub2 as coreboot's payload need serial port debug


From: address@hidden
Subject: grub2 as coreboot's payload need serial port debug
Date: Sun, 22 Sep 2013 15:14:37 +0800

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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