Adding support for Freifunk is also one of my intentions with the CPE210. I also got version 2 by accident, because I didn't do any research about newer versions of the CPE210. According to the TP-Link website there is also a CPE210v3, which I have never seen. Maybe this will be the non-EU version?
I never tried to add LEDE support to a new device, but the commit for supporting CPE210v1 looks quite logical. Anyway I would be glad if someone experienced could provide us with some tips. One thing that could cause trouble is TP-Links SafeLoader.
//edit: This is the actual partition table read from /dev/mtd1:
partition fs-uboot base 0x00000 size 0x20000 partition partition-table base 0x20000 size 0x02000 partition default-mac base 0x30000 size 0x00020 partition product-info base 0x31100 size 0x00100 partition device-info base 0x31400 size 0x00400 partition signature base 0x32000 size 0x00400 partition device-id base 0x33000 size 0x00100 partition os-image base 0x40000 size 0x170000 partition soft-version base 0x1b0000 size 0x00100 partition support-list base 0x1b1000 size 0x01000 partition file-system base 0x1c0000 size 0x600000 partition user-config base 0x7c0000 size 0x10000 partition default-config base 0x7d0000 size 0x10000 partition log base 0x7e0000 size 0x10000 partition radio base 0x7f0000 size 0x10000