sdram on board

daniel at dmhome.net daniel at dmhome.net
Thu Jan 16 09:17:00 CET 2003


I am trying to get an embedded pc board to run with linuxbios. The board is an arbor emcore6352 and is (almost) identical to the technoland  sbc710 from the CVS tree. The onboard ethernet is an intel chipset however, and the cpu is a low power pentium iii. 

* Linuxbios is coming up and so is the kernel. The pirq table however, is not successfully copied to 0xf0000, or so the debuging message tells me. Ethernet and usb both have irq zero assigned in linux ...  
Any tips where I can start looking? 

* The other thing , is that the board has it's sdram (128mb) soldered on the pcb, and there's no serial eeprom to read the stuff that usually comes from the smbus. 
So far the only way to get linuxbios to come up is to plug in extra sdram(in an sodimm socket) that DOES have the usual serial eeprom to do spd. 
I have the datasheets of the sdram components, so I guess it's a matter of hardcoding the information about those chips somewhere? Could you please give me a hint as to where would be the best place to insert this code into the source tree? 
Or any useful links about (basics) of sdram initialization, since I am a total newbie with this stuff. 
 

Thanks  






More information about the coreboot mailing list