Is there a list of what is actually compatible with the AT32AP700x (ideally already supported under linux) for a larger capacity flash chip, in the range of 32-64MB? I have read the docs from atmel, various application notes, information is vague at best... I also plan to mount /usr on that same chip, so fast is best... ;)
On a related note, is FRAM supported in stance of flash (by the ap700 and linux both?)?
Regarding NOR flash, any which have the right bus width and implement CFI should now work. u-boot and Linux both just have generic CFI interfaces now so all should be fine. I /think/ avr32program may not support all cfi chips but IIRC avr32@atmel.com are pretty good about getting support for your particular chip in there if you ask them.
NOR flash bigger than ~16MB is fairly hard to find a lot of the time, generally it will be used for boot and some NAND flash used for main storage.
Regarding the FRAM, what interface does it have? I've only ever seen serial FRAM (which you can't boot off, AFAIK there isn't a driver for but for which it would be easy enough to write one). If you can get one with a parallel interface which supports CFI then sure you should be able to boot off it fine.
-S.
