• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 98 subscribers
  • Views 453 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

OMAP-L137 EVM USB boot

Erik Svensson
Prodigy 60 points
Other Parts Discussed in Thread: OMAP-L137

Hello,

I'm trying to boot the supplied linux on the OMAP-L137 EVM board. Because of restrictions on the network i thought i'd try to boot from USB instead of NFS. I have moved the filesystem onto a SanDisk Cruzer Micro U3 4Gb pen drive. The pen drive is inserted into USB1 but when i try to issue "usb start" in u-boot I get "USB:   Error, couldn't init Lowlevel part". What went wrong? I have rebuild u-boot as described in the wiki. Have i forgotten to build something into u-boot?

Best regards,
Erik

  • 0
    TI__Mastermind 25966 points

    Below is what I typed in teratem a couple of months ago.  And I used a USB stick on the microB USB port (make sure you have the B adaptor from Digikey) that was just FAT32 copied from WinXP.  Unfortunately I do not have access to HW for a couple of days to retest:

    fatls usb 0:1 /
    usb reset
    fatload usb 0:1 0xC0700000 uImage
    usbboot 0xc0700000 0:1

     

  • 0
    TI__Expert 7435 points

    I think you have not compiled the usb host low level driver.  Hope you have followed the steps outlined in the OMAL-137 user guide w.r.t USB support in U-Boot.

     

    regards

    swami

  • 0 in reply to Joe G.
    Prodigy 60 points

    Thank you for the answer. I successfully loaded from SD instead but since this won't be a option later on I'd like to get the USB boot to work. Just a few questions. It isn't possible to boot from the USB 1.1 A connector? If I'd use the micro-AB connector wouldn't I need a USB A Female to USB micro-A male adapter like H11576-ND / ZX40-A-5S-75-STDAJ from DigiKey? From you message it seems like you used a micro-b adapter.

    Best regards,
    Erik

  • 0 in reply to Erik Svensson
    TI__Expert 7435 points

    USB1.1 Host hook up is still not done.  Currently USB2.0 hookup is available and tested.  Yes you would require a Micro A to A-Female adapter.

    regards

    swami