I appear to have badly abused my gumstix...
I've been playing around with new root images for most of the day, trying to put together a small, tight, properly configured (read: quirky) root image. I'm working with a 4M 200bt, 1.1.1 (or 1.1.2) u-boot.
The trouble started when my latest root gave me strange errors about not reading JFFS2 blocks. The message was something akin to "expect badness". The kernel messages started to overlap, report bad info, etc.
I halted and got a fresh copy of the same buildroot, flashed again, same result.
I decided to try upgrading u-boot to see if it made any difference. I got the u-boot.bin from the latest buildroot (987?), put it on the MMC, and followed to procedures in the wiki. It upgraded fine.
I powered down, started it back up, and got a kernel panic. All I remember of the message was that it had the phrase "VFS" in it.
I decided the old u-boot was probably a better bet. I restarted and reflashed to the older u-boot. This time I just used the 'reset' command, intending to reflash my rootfs. U-boot gave the message "Restarting" and then nothing.
I've tried several boots, but gotten nothing. No response. Buehler... Buehler...
I'm sorry for spurious details, but I'm recounting events and messages from an hour or so of work.
Does my gumstix require a reflash? Did I go so far as to brick it?