[coreboot] Getting output from serial..... kinda....

Rudolf Marek r.marek at assembler.cz
Sun Dec 6 20:33:18 CET 2009


>     1) do you port new motherboard ?
> 
> 
> I am.

Good. what superio is it? Some have a bit to trigger if clock source is 24MHz or 
48MHz. Try to fidling with that.

We are on IRC irc.freenode.net #coreboot

Rudolf


> 
>     2) if you  set speed to 115200 do you see something if you set on
>     the other side 57600 or 28200 bauds?
> 
> 
> Both set to 115200, works fine with OEM BIOS to get linux console up.
> 
>     3) if you set coreboot to 57600 and the other side to 115200 do you
>     get something?
> 
> 
> Same
> 
>     4) Sometimes when the clock is nearly 115200 but a bit off some USB
>     serials cannot handle that. Maybe you can try to connect some other
>     device, or try to test with some real serial line on some other PC.
> 
> 
> Works on another PC.
> 
> If it is any help, minicom flicks between online and offline when doing it.
> 
> Dave
> -------------
> root at crankyadmin.net <mailto:root at crankyadmin.net>
> cranky at archlinux.us <mailto:cranky at archlinux.us>
> 
> 
> On Sun, Dec 6, 2009 at 7:12 PM, Rudolf Marek <r.marek at assembler.cz 
> <mailto:r.marek at assembler.cz>> wrote:
> 
>     Hi,
> 
>     Please answer following:
> 
>     1) do you port new motherboard ?
> 
>     2) if you  set speed to 115200 do you see something if you set on
>     the other side 57600 or 28200 bauds?
> 
>     3) if you set coreboot to 57600 and the other side to 115200 do you
>     get something?
> 
>     4) Sometimes when the clock is nearly 115200 but a bit off some USB
>     serials cannot handle that. Maybe you can try to connect some other
>     device, or try to test with some real serial line on some other PC.
> 
>     Rudolf
> 
> 
> 
>     David Houston napsal(a):
> 
>         Hi all,
> 
>         Would anyone have any suggestions why all I get out of my serial
>         port when booting my coreboot build is
>            ��FƢ���� =U$'E&&M#M y= �F ⌋!y= �F Ƌ!y=[$ M# MO"M
>         y=+_Y�b��������������#⣉/y
>            =+OIfyy=[$K KO K!K$L��� H#C1 �"b�㢢�VM  K$LcDbD�b�#㢉        
>                                                                        
>                                                               #㌢      
>                                                                        
>                                                                 #㢉    
>                                                                        
>                                                                   #㌢  
>                                                                        
>                                                                  
> 
>         I know the usb converter is good as I have tested it on another
>         machine. And I know the serial port is good as I have got a
>         linux terminal up with the OEM Bios.
> 
>         I'm not sure what else to attach to help diagnose the issue.
>         regards
> 
>         Dave
>         -------------
>         root at crankyadmin.net <mailto:root at crankyadmin.net>
>         <mailto:root at crankyadmin.net <mailto:root at crankyadmin.net>>
>         cranky at archlinux.us <mailto:cranky at archlinux.us>
>         <mailto:cranky at archlinux.us <mailto:cranky at archlinux.us>>
> 
> 




More information about the coreboot mailing list