I cant comment much about that but i can give you another option. modular cpu/brains floss laptop: http://rhombus-tech.net/community_ideas/laptop_15in/news/ with open/libre eoma68 standard cpu card/module spec. http://rhombus-tech.net/
theres a possibility of a eoma68 mips cpu card but i believe its on hold as it wasnt needed for fsf endorsement in the crowdfund (a20 card was fsf endorsed). I wont be surprised if its finished and up for grabs at some point in the future. lukes working on promising mini monster eoma68 cpu card for the 2rd cpu card to be released right now. or if someones keen im sure he would be very very happy if someone would like to get the mips card to production or finish any design work left(?) or even just _sponsor it_. :) http://rhombus-tech.net/ingenic/jz4775/ http://rhombus-tech.net/ingenic/ or for something sooner you can use passthrough card with your mips dev board of choice: http://rhombus-tech.net/community_ideas/passthrough_card/ I made a pledge for the laptop so I be looking forward to getting mine this year :)