Greetings, I am trying to getup a Scout based board with 64MB SDRAM, and could use any recommendations to fix this problem:
If I set the refresh-enable bit in the PSDMR, the chipselect for flash and other devices vanishes: consequently, this startup code ends up executing junk. At this point if I try to look at the flash from the BDI2000, the flash cannot be seen. On the other hand, if I initialize the SDRAM without setting this refresh-enable bit, ppcboot (the code using it) comes up and am able to run commands etc. However, the problem now is that without the SDRAM refresh we run into memory corruption problem (mtest will fail) and a system hang. Its interesting to note that as long as memory is accessed frequently (say via mtest), the corruption is not see at that address. Also, an idle system almost hangs in a very short time, whereas an active one with mtest will continue on. Best regards, -Arun. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
