On Nov 27, 2006, at 4:48 PM, Timur Tabi wrote:
Not on any 83xx board.
Why not? It shouldn't be any different from other PowerPC cores that do it. I've done it on other 83xx boards, and in fact is quite easy if you use the low boot vector.
All of my 83xx boards had to go back to clients, but I'll try to find another one to test out a patch and send it.
Maybe it does in misc_init_r() of tqm85xx.c, but I'm not sure. It programs OR0/BR0 and maybe OR1/BR1, but not LBLAWAR1, but I don't know what affect that has.
Considering your employer, you should know :-)
But since that's an 85xx board, this code doesn't apply.
Oh come on. :-) The beauty of these processor variants is their incredible similarity. The further beauty of the 83xx is we get the nice bus controller with the traditional PowerPC core.
Take the time to understand both the processor technology and the features of U-Boot. Using the CFI driver with compliant flash (which is nearly everything these days), the only flash configuration variable should be the maximum size of the local bus window you want to allocate to flash.
Thanks.
-- Dan