>-----P?vodn? spr?va----- >Od: Laurent Pinchart [mailto:laurent.pinchart at tbox.biz] >Odoslan?: 22. m?ja 2006 14:12 >Komu: linuxppc-embedded at ozlabs.org >Predmet: Re: SCC1 as serial console > > >Hi Ladislav, > >> can anybody help me to setup the SCC1 port as serial console on MPC860 with >> kernel 2.6.15.4? I would like to use it as system console during the >> booting proccess. I can not get any output on serial console during booting >> proccess, I use uboot. > >Does SCC1 work correctly in U-Boot ? If not, you should fix that first. I'll >assume it does.
Yes, it works fine for kernel 2.4.22. >There are many issues which could lead to a silent serial console. The serial >port could be misconfigured, or the kernel could crash for another reason >before the serial port is initialized. I did a little experiment, I turn off the root file system so my kernel(system,..) restart after 180 seconds. When there was something wrong the there wasn't system restart. But, ofcourse I CAN NOT be sure that this selince is due an another error or I just can not see the output. >Have you been able to get a serial console on another serial port (SMC) ? Are >the clock frequencies computed by U-Boot and passed to the Linux kernel >correct ? Please can you explain how to get thi serial to SMC? > >Do you have a hardware debugger (BDI2000) that you can connect to the >processor to see if Linux crashes before initializing the serial port ? If >not, you will probably have to take a try at led-debugging (make some leds >blink at various point in the Linux kernel to try to find out what happens), >but that's really no fun. > No I don't have any :( Ladislav Klenovic_______________________________________________ >Linuxppc-embedded mailing list >Linuxppc-embedded at ozlabs.org >https://ozlabs.org/mailman/listinfo/linuxppc-embedded
