Hi Jordan, In my embedded system, I dont have VGA monitor. I have only serial console. Even after adding serial,terminal_input/output lines also i am not seeing any kernel log messages.
Thanks Sateesh. On Sat, Apr 7, 2012 at 2:15 AM, Jordan Uggla <[email protected]> wrote: > On Sat, Apr 7, 2012 at 12:22 AM, satish kondapalli > <[email protected]> wrote: > > Hi, > > > > I am working on atom based embedded system. This Board has only serial > > port. > > > > In this board UEFI BIOS is coming up and am able to run the GRUB.EFI. > With > > below grub.cfg file, i am able to load the my kernel(this kernel has > > initramfs file system for my embedded system ) but while bootinmg the > kernel > > i am not seeing any messages on serial console. But i am seeing my menu > > The fact that you're not seeing any kernel messages on the serial > console means that *the kernel* is not configured properly for serial. > All grub does is load the kernel and pass along the kernel parameters, > it doesn't parse their meaning itself. Try asking your distribution > for support on how to configure your kernel to output via serial. > > > entry and the following error > > " > > > > error: no suitable mode found > > Booting however > > > > " > > > > This is my grub.cfg file: > > > ----------------------------------------------------------------------------------------------------------------------- > > # Boot automatically after 10 secs. > > set timeout=10 > > > > # By default, boot the first entry. > > set default=0 > > > > # Fallback to the second entry. > > set fallback=1 > > GRUB_TERMINAL=console > > GRUB_TERMINAL is a variable for configuring grub-mkconfig, and would > go in /etc/default/grub, and "console" does *not* refer to serial. > Since you're writing your grub.cfg manually and you probably want grub > to output to the screen as well as to serial I would add this to your > grub.cfg (though you might want to add more parameters to the serial > command as documented here > http://www.gnu.org/software/grub/manual/grub.html#serial ): > > serial > terminal_output --append serial > terminal_input --append serial > > > -- > Jordan Uggla (Jordan_U on irc.freenode.net) >
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