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Boot DVEVM6446 (or 6467) through USB thumb drive

rtovo.dsp
Prodigy 20 points

Hello people.

I'm new to this board, though I've been reading some posts in the DaVinci forum lately.

I need to know if there's a way to configure U-Boot for booting DVEVM6446 or DVEVM6467 via USB drive.

Thanks in advance.

  • TI__Mastermind 41665 points

    I am not sure if booting the kernel from a USB drive is supported in U-Boot (I have never seen it done), this is probably something you would have to modify U-Boot to handle.

    If you wanted to try getting the file system over USB you could take the normal HDD bootargs variable and change root=/dev/hda1 to root=/dev/sda1, this should tell it to attempt to mount the root filesystem from a USB mass storage device.

  • TI__Expert 7435 points

    If you are U-Boot savy DaVinci USB controller support has been added to the U-Boot Git tree recently.  With this you should be able to boot linux on a USB Stick.

    You would have to build the U-Boot from the mainline GIT after enabling the USB support in the DaVinci Board config.

    regards

    swami

  • in reply to swami
    Prodigy 20 points

    Thank you all.

    I'll try to do it and provide the feedback when I've got the results.

     

  • in reply to swami
    Prodigy 30 points

    Thanks Swami,

    I have  a project using DM6467  in which I need to use USB port to download kernel image and Filesystems. The release version of PSP with u-boot 1.2 does not have this support.

    The ftp site of denx list several version after this. The latest being Jan 21 2009 . Which version would have support for this ?

    Thanks,

    Neeraj

     

     

  • in reply to Neeraj
    TI__Expert 7435 points

    Neeraj,

    Pl. use U-Boot version 2009.03-rc1.  It has USB download support for DM6446.

    regards

    swami

  • in reply to swami
    Prodigy 30 points

    Hi,

    I downloaded this from denx website. I am working on DM6467. I am coming across an issue which I posted on U-boot list also,

    I built the u-boot.bin for NAND flash. My only mdoification was in file
    include/configs/davinci_devevm.h where I #define CONFIG_SYS_USE_NAND

    I built this and flashed this using TI provide sfh_DM6467.exe. The flashng goes well and I see blocks 6 and 7 being written. However on power on of EVM I see following:

    Chip initialization passed!
    TI UBL Version: 1.30
    Booting Catalog Boot Loader
    BootMode = NAND
    Starting NAND Copy...
    Valid MagicNum found.
       DONE
    Jumping to entry point at 0x81080000

    This keeps repeating and EVM it is unable to boot.

    Any one used this version of u-boot with a NAND flash and TI DVEVM. Any suggestion on changes I should make to isolate this error ?

    Regards,

    Neeraj