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Altera_Forum
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11 years ago

uClinux using Nios II e-core

Hello Everyone,

I wanted to see if anyone has tried uClinux on Nios II e-core.?

I'm trying to run uClinux 2.6.30 on Nios II e-core. In the make menuconfig, I have turned off Hardware Multiplier option (since e-core doesn't have one). But after I download the image and try to run it, it gets stuck at

"Uncompressing Linux... Ok, booting the kernel."

Btw I'm able to run uClinux 2.6.30 on Nios II f-core.

Any help is appreciated.

Thanks,

Tedy

10 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    hello ，i am trying to transplant the uclinux to my cyclone IV ， i found a detail description about uClinux on Altera Wiki page， but i encountered several problems as follows:

    1>my environment is ubuntu 12.04 - 64bit ，i cannot success to configure my toolchain (prebuild toolchain nios2gcc-20080203.tar.bz2 )PATH right：i add this line in ~/.profile：PATH=/opt/nios2/bin:$PATH;export . but nios2-linux-uclibc-gcc -v failed； then i chose to use ubuntu 11.04 32-bit ,it works;

    so, what is your linux version ?

    2>I cannot download http://sopc.et.ntust.edu.tw/pub/linux/nios2-linux-20100621.tar ，it seems the link is out of work;

    so i use ftp://ftp.altera.com/outgoing/nios2-linux/20120802/ instead ; but when i come into uclinux-dist:# make menuconfig ,it failed;said that :

    Are you do your job as the same as Wiki page do ??

    now ，i cannot make any progress ，

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    Is it uClinux without MMU? This is because Nios II e does not support MMU.

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    --- Quote Start ---

    Is it uClinux without MMU? This is because Nios II e does not support MMU.

    --- Quote End ---

    hey， mikedsouze ，where can i down load the nios2-linux-20120621.tar ?

    the link in Wiki is invalid；
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    --- Quote Start ---

    Is it uClinux without MMU? This is because Nios II e does not support MMU.

    --- Quote End ---

    Hey Mike.

    It is uClinux without MMU.

    Tedy
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    i come across it too,if you are using nios2nommu , which reset_address are you choose in sopc->cpu??? maybe you should choose flash controller .

    Frank
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    --- Quote Start ---

    Reference: http://www.alterawiki.com/wiki/uclinux

    e core has no hardware multiplier, so it needs a hack (under hardware requirements section). But I am not sure what "hack" is it referring to.

    --- Quote End ---

    Hey Mike,

    Hardware multiplier is not the problem. I have run s-core without hw_mul and it works fine. The issue is with icache. Need to tell the kernel there is no icache.

    Tedy
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    --- Quote Start ---

    Reference: http://www.alterawiki.com/wiki/uclinux

    e core has no hardware multiplier, so it needs a hack (under hardware requirements section). But I am not sure what "hack" is it referring to.

    --- Quote End ---

    Hey Mike,

    I have tested uClinux on Nios II s-core without hw multiplier & its working. So I don't think hw multiplier is the issue. I think it has to do with icache.

    Tedy