[coreboot] Cache as RAM - is it possible to execute code in cache?

[Jackie Pan]

Hi all,
I'm wondering if it's possible to place code into cache-emulated RAM, I
tested on an intel T2300,
after CAR setup, I can read/write to the mapped region, however code
execution seems not working.
Postcode reveals that the CPU seems to be spinning on the very first
instruction in the 'RAM' region.

Anyone could give some hints? thanks.