Upgrading GuruPlug Kernels

I recently had more time to investigate my earlier problems with the GuruPlug.  The problem was discovered by some people on the plugcomputer.org forum.  The problem stock U-Boot is that is incorrectly reports the arcNumber.  The solution then, is to upgrade U-boot!

After a failed flashing attempt(don’t attempt to tftp flash u-boot.kwb from within U-Boot!) I needed to use JTAG combined with the included JTAG adapter.  To do this, make sure that the UART cable is unplugged, and the JTAG cable is plugged in(unplug/replug the USB adapter just to be safe). First grab the guruplug-installer package, then grab a known-good copy of U-Boot.

Continue reading “Upgrading GuruPlug Kernels”

Restoring GuruPlugs

I’ve recently taken ownership of a GuruPlug, and naturally the first thing I tried to do when I got it was to install Gentoo on it.  I first went to build a kernel using the GuruPlug patches on a vanilla 2.6.34 kernel, which ended up disasterous.  I applied the patches, however the kernel ended up not booting.

At which point I decided I wanted to try to restore the original kernel, so that I would at least have a working system with which to test.  Therein lied the rub.  The files posted here are completely broken. Continue reading “Restoring GuruPlugs”