View Full Version : WTB0002 - U-Boot diagnostic test can cause WARP to hang during boot ( Intermittent )

06-16-09, 02:50 PM

Date Issued: June 16, 2009

Document Version: Version 1.0

Product(s): WARP Appliance

Reason: WARP appliance can hang during boot - intermittently ( u-boot diagnostics)

Update: March 5, 2010
- This technical bulletin does not apply to PADS 2.1 users.



An issue with a U-Boot diagnostic test is causing the WARP appliance to hang during the boot sequence (sometimes). The problem is intermittent and has been found in the 1.3.0-65 u-boot revision. Previous versions of the u-boot ( 1.3.0-62 and older ) don’t have this issue.

More detailed information can be found here: http://forum.pikatechnologies.com/showthread.php?t=169 (http://forum.pikatechnologies.com/showthread.php?t=169)


There is a patch version of the u-boot to correct this problem. The patch can be downloaded from here: ftp://ftp.pikatech.com/outgoing/appliance/2.0/u-boot-1.3.0-74.bin (ftp://ftp.pikatech.com/outgoing/appliance/2.0/u-boot-1.3.0-74.bin)

U-boot patch installation instructions can be found here:

1. Copy the tarball to your appliance and extract the files. Refer to Writing Software Images to Flash Using the Warploader (http://outgoingftp.pikatech.com/appliance/2.0/Docs/html/pads_user_guide/PADS_BurningToFlash.html) in the PADS User Guide for examples of transferring files to the appliance.

2. Enter the following command on the appliance to upgrade U-Boot:
warploader -p u-boot uboot-1.3.0-74.bin3. Reboot and verify the upgrade from the information displayed on the serial console as shown below.


How to check the WARP U-Boot Version:

a) While Warp running: Not available at this time. A feature request has been submitted to add the ability to check the U-Boot version while it is running.

b) Serial Cable: Attach the serial cable and watch the console while the appliance goes through the boot sequence ( as seen above )

If you have any questions about this technical bulletin, please contact PIKA Support.
Email: support@pikatech.com (support@pikatech.com)