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Author Topic: sheevaplug - serial USB console port dead as a dodo?  (Read 2877 times)
Julf
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« on: November 20, 2010, 01:00:30 PM »

Hi!

I have a sheevaplug that I manage to log into using ssh without problems, but when I plug in an USB cable there's nobody home - none of my host computers see anything (not even an unknown USB device) plugged in.
Is there a way to configure the u-boot environment without the serial USB console?

   Julf
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bigbear59
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« Reply #1 on: November 20, 2010, 03:57:49 PM »

 Grin e-squizo did it  Grin

See: Topic: uboot-envtools  <-- Click here for Message

Quote
At the current time, to my knowledge, no one has been successful at updating the Uboot environment from a running kernel.

This state of affairs changed yesterday :-)

You can use these tools I wrote for this purpose https://code.google.com/p/sheeva-uboot-tools/

And thanks to the participants of this thread, you guys gave me all the right clues on how to solve it!

and maybe reference:
U-boot environment variables in linux
http://elinux.org/U-boot_environment_variables_in_linux

Hope this works for you
BigBear59

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Julf
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« Reply #2 on: November 21, 2010, 06:35:07 AM »

Thanks for the pointer, but... Sad

Code:
# sheeva-ubootenv-print
sheeva-nandrs-decode: too many errors in block #0 of chunk #0
sheeva-ubootenv-decode: environment must be 128Kb.

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UnaClocker
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« Reply #3 on: November 21, 2010, 12:56:28 PM »

When I connect via the USB port, there are two serial ports that show up. One of them works, the other doesn't. That may be the problem you are encountering. See if there's a second serial port that shows up when you connect, and try that one.
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SheevaPlug - 8gb class 4 SDHC primary drive, 4tb 3.5" media drive, Debian Wheezy, nginx, Samba, Shorewall

bigbear59
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« Reply #4 on: November 21, 2010, 02:51:31 PM »

Try this from my UnBricking post

Bricked my Sheevaplug, Unbricked & upgraded at once -- HOWTO

15. Install the FTDI drivers:
     Open "Device Manager". Plug USB Serial cable from SheevaPlug to the computer.
     Hardware will be found.  Open the libusb-win32-bin-1.2.2.0\bin\ directory.
     Run INF-Wizard.  Choose the device with "interface 0" in the description.
     Install driver.  Right click on "SheevaPlug JTAGKey FT2332D B" in the Device Manager.
      Update driver, Point it to the CDM 2.04.16_SHEEVA directory.
     Right click on "USB Serial Port" in Device Manager, Update driver,
      Point it to the CDM 2.04.16_SHEEVA directory.

Hope this helps,
BigBear59
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Julf
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« Reply #5 on: November 22, 2010, 03:23:24 AM »

BigBear59 and UnaClocker - thanks for your suggestions, but it appears the USB is really physically dead. The host computer doesn't see *anything* being plugged in, not even an unknown device
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bigbear59
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« Reply #6 on: November 22, 2010, 07:06:05 AM »

As a final resort, get a magnifying glass and see if the pins in the mini USB are bent.

Maybe you'll get lucky.

BigBear59
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Julf
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« Reply #7 on: November 22, 2010, 08:54:19 AM »

No such luck, unfortunately - the connector looks OK.
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