uClinux boot problem on Cyclone IV

[Altera_Forum]

Hi everyone, 

 I am a newbie of uClinux. My PC environment is CentOs 5.5 + nios2gcc-20080203.tar.bz2 + nios2-linux-20100621.tar.   I want to download uclinux to my custom board, whose FPGA is EP4C30. And the ptf file is generated in Quartus10.1.  I carefully follow the steps of the wiki: make menuconfig (default) make hwselect make nios2-configure-sof nios2-download -g nios2-terminal However, the system always halts after the sentence, "Uncompressing Linux... Ok, booting the kernel.". I have changed the ".ptf" file to ".ptf.pre_generation_ptf" file, the performance is the same.   Then I changed to download uclinux to another custom board. Whose FPGA is EP3C40, and the ptf file is generated in Quartus8.1. I followed the same steps, but it works well.    I am a little puzzled. Because the sopc configuration is almost the same. I also note the irq 0.   I don't know whether nios2-linux-20100621.tar supports Cyclone4. I need your help.   Thank you.   Derek

[Altera_Forum]

Now, I build a smallest system as the wiki, and it works in EP4C. I think it must be a mistake of my pre-sopc.

[Altera_Forum]

just wondered if you have a data cache in your nios. We cant get Linux to boot on our Cyclone III system if the NIOS data cache is greater than 8K