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News: Glomation introduces new GECM-9G25 SODIMM system on module

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sebacancinos

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• Hero
• Posts: 4

After playing around with the Glomation 9G20 board, one day it's heartbeat stoped. I rebooted it by unplugging it and replugging but the red LED kept turned on, without it's usual blink.

I connected the debug port to the serial and it only printed out "ROMboot >", searched the forum and resolved it was an u-boot problem. I had to re-flash it.

Followed the instructions in http://glomation.net/smf/index.php?topic=11.0 (with the appropriate board files, off course) and after some fooling around I got it to flash, or so I thought. After the SAM-BA tool said it was done, I rebooted the board and not only does it still stop at "ROMboot >", but now it doesn't seem to recognize the board through USB (doesn't respond at all on plugging). I tried to connect it on 3 different computers (1 Win Vista, 1 Win Xp and 1 Ubuntu Linux) none of them registered that I had plugged in a USB device.

Anyone have a suggestion to un-brick it? I followed all the instructions and it never went without power supply while flashing. On the logs, it only showed some bad blocks on the NANDFlash. The cable is the same that worked the first time, but I checked it with a tester anyway and all the wires are ok.

Thanks in advance
Sebastian

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• Super Hero
• Posts: 342

It seems wrong files are used to FLASH the board.  Try to short the jumper S1 and recycle the power a few times to see the boot strap code will clear the boot sector of the FLASH chip.  If not use a bare wire short resistor R33 when powering up and remove it as soon as the board is powered up.  ONLY USE THIS  IF EVERY OTHER METHODS FAILED.

[sebacancinos]

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• Hero
• Posts: 4

It worked!!!!!!!!!!!

I shorted the S1 jumper and left it powered until the LED turned off (completely by accident, I was trying shortening the jumper powering up, and then down immediately and nothing happened. My PC crashed after I powered it on, so I was distracted when suddenly the LED turned off and attracted my attention again).
Then I removed the jumper, powered up again and my PC recognized the USB device. Executed the bat file (with the S1 jumper OFF) and it flashed right.
When I powered up, the uBoot started again, but all configurations and the Kernel image where erased. I got it to boot with a tftp server for the kernel image and a USB drive as filesystem.

Thanks for all the help.

Sebastian