Thanks. I tried this patch and built it with kconfig, but it still hangs.
I'm assuming that it hangs in the same spot, right?
Since I don't have the board, I can only suggest narrowing down where it hangs. You could insert more print statements liberally, etc.
You could try commenting out enumerate_ht_chain() in cache_as_ram_auto.c, and see if that gets you farther.
Sorry it's broken.
Myles