Does anyone know of any foolproof method of getting Wheezy running on a Dreamplug?
I believe this requires upgrading U-Boot (to get device-tree support/fix L2 cache issue?) but when I tried upgrading U-Boot by flashing it from U-Boot I ended up with an expensive brick. Now this may have been user error, but I don't want to risk bricking the new DreamPlug I bought without instructions which are known to work. Or, perhaps the safest thing is to load a new U-Boot from the old one if that's possible? And in desperation I may even resort to writing a shim to make the Wheezy kernel load with the stock U-Boot. The method I was following which created a brick was to use the U-Boot binary linked from Martin Michlmayr's page [1] and flash it using the the sf probe/erase/write commands from the FreedomBox site [2]. My attempts to debrick using openocd and the JTAG module were the same as another user [3] even when I scripted power cycling and openocd to run in a loop a to try and get the timing right (which was one of the suggested remedies). I gave up after 1000's of cycles in a overnight run. I then found kwuartboot [4] and thought I was saved, however both my old and new DreamPlugs die after the first xmodem packet is sent. I verified that the boot ROM is version 1.21 by sending the debug pattern to the boards and seeing the response. After sending the boot pattern I see byte 0x15 being sent from the plug every second on the serial port, which is the correct behaviour for waiting for an xmodem. However after sending the first xmodem packet the board don't send an ACK, and any further packet retries result in the packet being echoed back. I've tried sending different U-Boot files as well (e.g. the one in the Debian U-Boot package). And just in case I have a new incompatible DreamPlug variant I compared the kwbimage header from the NOR of my new stock plug with those in the images I was trying to load via UART; the header contents are the same apart from the length and CRC fields as we would expect. So that lead me to this plea for help :-) [1] http://www.cyrius.com/debian/kirkwood/sheevaplug/uboot-upgrade/ [2] http://freedomboxfoundation.org/ubootUpgradeInstructions/index.en.html [3] http://www.newit.co.uk/forum/index.php?PHPSESSID=qqriddgo7r3fqce3pj1f08f5t7&topic=2619.0 [4] http://www.solinno.co.uk/public/kwuartboot/ -- Tixy -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
