A few new items at http://my.svgalib.org/770/n900/u-boot/ :

u-boot with (intermittent) support for internal mmc. It works reliably once after I boot maemo, but if I do something in u-boot until the watchdog powers off, and then turn on the N900 with the power key, the internal mmc card is not found. This should allow for dual booting meego without an SD card.

btrfs.ko - this module allows maemo to access meego filesystem. It might have some bugs from my "porting" it to 2.6.28. Almost certainly leaking something on umount at the very least.