[OpenBIOS] [PATCH] RFC: Increase dictionary size on SPARC64

[Mark Cave-Ayland]

Hi all,

Thanks to some great work by Igor, the reason for my random debugger 
crashes has been found. It appears that the default dictionary size is 
too small on SPARC64 and repeatedly updating the translations property 
is enough to cause the forth dictionary to overflow the memory allocated 
for it.

I'd like to propose the attached patch which doubles the dictionary 
memory from 256k to 512k as currently used by PPC. My concern about 
applying the patch directly is that I'm not sure whether or not any 
corresponding changes to entry.S also need to be made. AFAICT the 
initialisation code handles 19 x 512k pages when setting up the MMU 
(which should be more than enough) but thought I should get a second 
opinion first.

ATB,

Mark.