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Altera_Forum's avatar
Altera_Forum
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14 years ago

TSE on Cyclone III DSP Deveolpment KIT with uClinux

Hi guys,

I have a working project on a Stratix II development board and i have to move it on a cyclone III. I built the new system starting from nios2_linux_3c120_125mhz project, by removing some peripherals and by adding others, but nothing that involve TSE. Then I compiled uClinux kernel ( nios2-linux-20100621.tar, kernel 2.6.30) but after the boot network doesn't work. I selected Altera Triple Speed Ethernet (SLS) and Marvell PHY in the kernel option. With the command

ping 192.x.x.x

i can see the leds RX/TX working fine but i can't reach host destination. I see nothing with wireshark, so i think that there's a problem in initializing tse. I selected Altera Triple Speed Ethernet (SLS) and Marvell PHY in the kernel option.

Anyone can help me?

5 Replies

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

    Are You sure Your timing parameters are correct? I had same issues when timing constrains were bad.

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

    I'm quite sure. I started from a working project and i made only a few changes (nothing involving TSE or DMA) to adapt it to my requirements. After synthesis I have no error or warning related to timing.

    I think there's a problem in the init phase. I tried to execute the superloop example on this design (which is similar to the original ones) and it works, so I'm thinking there's a problem in uClinux driver.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    I changed the following instruction in nios2-linux/linux-2.6/arch/nios2/kernel/config.c from

    --- Quote Start ---

    .interface = PHY_INTERFACE_MODE_RGMII,

    --- Quote End ---

    to

    --- Quote Start ---

    .interface = PHY_INTERFACE_MODE_RGMII_ID,

    --- Quote End ---

    and now I'm able to ping another host in the network. I hope this will be useful for someone.