Hi Tobias,
"Föll, Tobias" TFoell@jetter.de writes:
i have a hardware which is very near to the yosemite board called JC-670. The yosemite board has 4 DDR chips and my hardware has only two chips (2*Micron 64V16M16 has 256Mbit...), because i need only 256MBit*2Chips=512MBit=64Mbyte.
Are the chips on both boards identical?
It seem that i have problems with the DDR interface. I downloaded the u-boot bin file from the AMCC -> denx page, and programmed it into the flash on my hardware called JC-670. On the serial output i saw that the system starts up. But then it hangs...
It seems to me that the SDRAM initialization for your new board is broken/incomplete. You need to fix it.
I can try this several times the difference is that sometimes i got the DRAM size(like first output) and somtimes not (like second output). Thats all. Must i change the u-boot code if i only use two DDR Chips ?
Not necessarily, but in your case it seems so.
On the moment i can not generate a new u-boot bin , because it will not work with cygwin under windows.I tried it. And i'am not a linux expert, because of this i can not do this work under linux on the moment.
Well, maybe this is the right time to become one?
Regards
Markus Klotzbuecher