nandwrite and contiguous space

[Stas Sergeev]

Hello.

I am looking for a NAND flasher that supports searching
for the contiguous region of good blocks (within a specified
range), and flashes an image to it. It seems nandwrite - the
default linux flasher - can only skip bad blocks, but the scenario
I need, doesn't seem to be supported.
Is there any other flasher that does support this?
Or maybe some trick with nandwrite exists?
If not, how difficult is it to implement such a capability into
nandwrite?