Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

uboot on cyclone III(EP3C25) Nios development kit

Hi,

I am having issues with downloading uboot on NIOS processor.I am following the steps mentioned in "http://nioswiki.com/DasUBoot". As the EP3C25 Nios 2 development kit is not supported, I had to modify the uboot board level source files.

After I compile uboot and try downloading, nios2-download just exits without giving any errors. This is how the run looks like

=============================================

user:/tmp/nios2-linux/u-boot> nios2-download -g u-boot

Using cable "USB-Blaster [USB 1-1.1]", device 1, instance 0x00

Pausing target processor: OK

Initializing CPU cache (if present)

OK

Downloaded 149KB in 1.3s (114.6KB/s)

Verified OK

Starting processor at address 0xE1FC0000

user:/tmp/nios2-linux/u-boot>

===========================

Could anyone help me out with this?

Also if someone has created the following files for this board, could you please share it?

a) "include/configs/EP3C25.h",

b) "board/altera/ep3c25/config.mk",

c) " flash.c"

Thanks for all the help,

regards,

priya

6 Replies

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

    uhm... I have problems understanding your situation... what happens next? No prompt on the console?

    I personally modified u-boot files to boot some custom boards, I made some mistakes the first times, maybe I can share my errors (and solutions) with you
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    yes i don't get a prompt on the console. I also get no errors so not sure how to debug.

    I modified the board config files looking at the ptf file from altera tools. I guess I am making some mistake in modifying these files. Have you seen something similar?

    Is there a way I can get more verbose messages from uboot?

    Thanks for all the help,

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

    ok, I had the same problem on a custom board, I suggest these checks:

    1) uart speed (bitrate) compatible with uart in the design

    2) uart speed in design equals uart speed in the terminal (kermit? nios2-terminal?)

    3) TEXT_BASE in config.mk and the address at which the nios2-download starts processor

    4) ./include/configs/yourboard.h contains correct values for uart address (take care of cache bypass), reset vector, exception vector, sys clock frequency. Even in this file there should be some reference (mine has) to the address at which the image is downloaded (TEXT_BASE).

    These are the checks I made to make my u-boot write something on the serial.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    It seems like the clock is not given, or been reset.

    Are you using jtag-uart or uart? I think you can use one or the other.

    CONFIG_SYS_NIOS_CONSOLE is the place to set.

    Be aware, if you are using mmu, your address is either 0xE******* or 0xF*******

    BTW, Do you have your own project folder at

    "board/altera/ep3c25/your_folder/all_files"

    You might want to copy all from similar projects and change them.

    Your question b) seems like incorrect to me.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Thanks for your suggestions and sorry for the late reply. I had to fix some issues with my sof file to get this to work.

    But now I am having an issue with the Triple speed Ethernet (tse_mac). It is not able to find the PHY. Has anyone seen this issue before?

    =====================================================

    U-Boot 2009.03-00006-g3387a3e-dirty (Feb 18 2010 - 14:58:49)

    CPU : Nios-II

    SYSID : 0x545b4163, Wed Jun 10 18:20:16 2009

    BOARD : Altera 3C25

    *** Warning - bad CRC, using default environment

    Net: board eth init

    Altera TSE init

    tse_mac: PHY id 883a883a is not supported!

    tse_mac: No PHY found

    tse_mac

    Hit any key to stop autoboot: 0

    ==> dhcp

    In TSE Halt

    Timeout waiting for rx sgdma!

    Timeout waiting for tx sgdma!

    TSEMAC SW reset bit never cleared!

    =====================================================

    thanks,

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

    ok i realized that uboot does not support PHY DP83848, that's why the errors.