rtems gen68360 sio

[sebastian ssmoller]

On Tue, 16 Nov 2004 07:51:23 +0100
"Thomas Doerfler" <Thomas.Doerfler at imd-systems.de> wrote:

> Sebastian,

hi,

> 
> I am sorry for that. Do you have a BDM debugger attached to your 
> MC68360? With this you could inspect the state of the software, 
> even when the console hangs.

unfort. my board does not support BDM (from my host) ... but i could
dump some info before the board hangs - what info do u think of ?

> 
> What happens BEFORE you open your DUMP_DEVICE? And which device 

before this i do my system init (init devices, starting tasks, etc) 

> do you have as "DUMP_DEVICE"? Do you have serial output on 

sorry i forgot to replace "dump_device" with the actual device after
copy & paste ... finally i tried all devices from /dev/tty00 to
/dev/tty05 and i found out that "/dev/console" is the only device that
does not freeze the system :(

> "console", before the system freezes? 

yes

> 
> You might try to set the operating mode of the devices to 
> "TERMIOS_POLLED" instead of "TERMIOS_IRQ_DRIVEN", just to find 
> out if things are better then.

this was my idea too but unfort. this didnt change anything for me. even
worse: running /dev/console with TERMIOS_POLLED causes my board to
freeze right after system startup :(

> 
> Do you really have your "console" attached to on SMC1?

yes. for the tests i attached a serial console to both: smc1 & smc2

thx
regards,
seb

> 
> wkr,
> Thomas.
> 
> 
> > hi,
> > i am currently trying to get ur code (console.c) running.
> > unfortunately no
> > luck so far :(
> > 
> > - i set the proper baud rate for my board/terminal
> > - i activated /dev/tty05 as smc2 - channel_list now looks like this:
> > 
> > struct {
> >   char *name;
> >   rtems_device_minor_number minor;
> >   int driver_mode;
> > } channel_list[] = {
> >   /* {"/dev/tty00",CHN_SCC1,TERMIOS_IRQ_DRIVEN},*/
> >   /* {"/dev/tty01",CHN_SCC2,TERMIOS_IRQ_DRIVEN},*/
> >   /*{"/dev/tty02",CHN_SCC3,TERMIOS_IRQ_DRIVEN},*/
> >   /*{"/dev/tty03",CHN_SCC4,TERMIOS_IRQ_DRIVEN},*/
> >   /*{"/dev/tty04",CHN_SMC1,TERMIOS_IRQ_DRIVEN},*/
> >   {"/dev/tty05",CHN_SMC2,TERMIOS_IRQ_DRIVEN},
> >   {"/dev/console",CHN_SMC1,TERMIOS_IRQ_DRIVEN},
> >   {"/dev/modem",CHN_SCC4,TERMIOS_IRQ_DRIVEN}};
> > 
> > but as soon as i call
> > 
> >  sio = open(DUMP_DEVICE, O_RDWR);
> > 
> > the system halts - no panic - no further output - nothing :(
> > 
> > any further hints ?
> > 
> > thx 
> > seb
> 
> --------------------------------------------
> IMD Ingenieurbuero fuer Microcomputertechnik
> Thomas Doerfler           Herbststrasse 8
> D-82178 Puchheim          Germany
> email:    Thomas.Doerfler at imd-systems.de
> PGP public key available at: http://www.imd-
> systems.de/pgp_keys.htm
> 


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