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Altera_Forum
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14 years ago

Problem rebooting Nios II from uClinux

Dear all, I need to reset Nios II from uClinux. I tried to use "reboot" app from sash but it didn't work. The response is Restarting system and then system freezes. I'm working on...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I upload it through jtag each time. The reset vector is located in RAM. Is it possible than this issue depends from the fact that a decompression of the kernel when i run "nios2-terminal" overwrite something?

I mean: "nios2-download -g zImage" loads the compressed image of the kernel in RAM and "nios2-terminal" decompress it before execute. What happens when i press CPU reset? I think that CPU tries to decompress one more time the kernel, but zImage is already decompressed and CPU can't find it. Am i right?

Probably i can resolve the problem if i put uClinux on flash.