MTD concat layer

[David Woodhouse]

joakim.tjernlund at lumentis.se said:
>  I thougth this was already supported? Just create a mtd partition
> that will span two or more banks and mount a JFFS2 FS on top of that
> partition. 

Doesn't work if the banks aren't made to appear contiguous by the map 
driver. The probe code can't handle it. 

The case in question has something like:

 --------------
 |  CFI chip  |
 --------------
 |  BIOS chip |
 --------------
 |  CFI chip  |
 --------------

You could hack up a map driver that appears to have the two CFI chips 
contiguously, and then the probe code would find them both and make a 
single MTD device from them -  but there was a reason why he wasn't doing 
this. Perhaps the 'BIOS' bit is in fact the beginning of the second chip, 
not actually a separate chip at all? I don't remember.

--
dwmw2