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Altera_Forum's avatar
Altera_Forum
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11 years ago

NiosII booting from on-chip memory

I am trying to boot a NiosII (HAL only, no other bigger OS) on a Cyclone IV directly from the on-chip memory. I have initialized the memory .hex file and included it in my project. I then recompiled ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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Actually, you don't need to explicitly perform the elf2hex. You can just run "make mem_init_generate" at the app directory and the hex files will be generated for you under a mem_init folder. You should be able to find a QIP file inside the folder. In your Quartus GUI, you can just add the qip file as part of the Quartus project, re-compile in Quartus and the sof generated from the compilation should be able to run after FPGA is configured.

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Did that. It still does not work. Any other ideas?

I also tried creating a .hex from the .elf, and setting that as the initialization file in qSys.

In either case the hardware is correct in the SOF, but the code is not there.