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Altera_Forum's avatar
Altera_Forum
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21 years ago

software (.elf) in onchip memory?

I'm using a custom board with an EP1C12 a flash, and a SDRAM module.

I'm getting problems with the sdram module (seems that after download the elf via usb blaster to the sdram, the sdram gets corrupted).

Is it possible to download the .elf to the onchip memory (instead of sdram or flash)? How can I set the reset address to the starting of the on chip memory?

Thanks in advance,

Marco

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    Hi Macro,

    I do not understand what you actually want to do. Since you have a flash in you custom board, why not use it to store both .sof and .elf image? The reset address can be set to the start address which .elf is stored in flash.

    I think, the real problem to you, is to set on-chip memory as running space of software due to error of sdram. This can be done in Nios II IDE, you can edit the system library property, link your elf to on-chip rom instead of sdram or ext_ram.

    Hope this helps a bit.

    Seu_xugh http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/rolleyes.gif
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    thank you Seu_xugh,

    this is exactly what I need. I successfully compiled a small program that entirely runs on the onchip memory and now I&#39;m able to make write/verify tests on the sdram.

    Cheers,

    Marco