Kernel

power management
CPU frequency scaling (current GX2 does not support it)
suspend to RAM (when?)
at the drop of the hat
in ebook mode and allow the DCON ASIC to handle video refresh
shutdown particular unused devices
memory management
compressed caching
relocation of code/data, increasing page locality, thus decreasing memory footprint
out of memory conditions
current code just says score = heuristic(process) according to alan
probably easy to set, just requires a deviation from the normal kernel
Filesystem
Stable JFFS2 with xattr support
device drivers
Audio: AC97 codec (probably adding support for the AD1888)
Power management for this chip is critical - good amount of work to do here
Input devices: keyboard, trackpad (supporting pointing, scrolling, and possibly graphical input).
additional buttons adjacent to screen for use in E-Book/tablet mode
wireless: Marvell (usb version of the 8388 (google for 88w8388))
Status indicators, visible with lid closed:
Power
Battery status
Wifi active
need an fbdev driver because there will be no vesa mode on the video card
AMD Geode GX2 (CS5535)
Requires power management updates
AMD Claims that unused parts of the chipset will "turn themselves off automatically if they aren't used" but that needs investigation
ALSA driver on the website supports PM but we have to do investigations of the IP around it - did it come from the windows driver or not?

Video card (GX2 embedded): dealt with by X.org only?
DCON ASIC (bridge from CPU to display) is in the process of design.
note that this chip might also generate keyboard events off the display part of the laptop
also handles unswizzling for the display into a standard frame buffer
poor man's antialiasing
control of refresh speed
local frame buffer to allow the CPU to be put into S3 while the panel lives on
rotation (maybe)

OLPC/Kernel