[U-Boot] ppc405ep boot freeze with u-boot 1.3.4

Hi

I have a custom ppc405ep board with 128MB SDRAM, very similar to the AMCC Taihu board. U-Boot 1.1.4 works perfectly fine. But version 1.3.4 freezes after saying "Relocating now" in debug mode.

Additionally, I've observed a strange effect concerning memory size: When a BDI2000 emulator is connected and the SDRAM size is set to 64MB or less, the board starts to the prompt. When a BDI2000 emulator is connected and the SDRAM size is set to 128MB, it freezes as well.

Has somebody any ideas, where the problem could reside, or what else to do, to isolate the problem?

Every comment is welcome ;-), Reto