[U-Boot] uboot MPC5200B DDR memsize hangs

[Chris Alfred (Internode)]

> Hm... U-Boot 1.2.0 is very old. Please consider it obsolelte and
> unsupported. Is there any special reason for not using current code?

No reason, UBoot 1.2.0 is in ELDK4.1.
Will seek and download latest uboot

>> UBoot starts and we see serial output; but UBoot hangs on the very
>> first read from DDR which is done in memsize.c:get_ram_size().
>>
>> The serial output is:
>>     CPU:   MPC5200 v2.2, Core v1.4 at 462 MHz
>>            Bus 132 MHz, IPB 66 MHz, PCI 33 MHz
>>     Board: JKC5200N7
>>     I2C:   85 kHz, ready
>>     DRAM:
>>
>> We are pretty sure the DDR configuration is correct, but we would
>> have thought this would not cause get_ram_size() to hang - merely
>> return 0 or incorrect memory size.
>
> You are almost certainly wron - either your hardware or your DDR
> initialization is broken.

Can bad DDR configuration really hang the processor? I thought there 
was no acknowledgement system for DDR.

> See also the FAQ at
> http://www.denx.de/wiki/view/DULG/UBootCrashAfterRelocation

Does the relocation occur before checking the DDR size?

Chris