BAT register usage with 745x CPUs

[Ross Vumbaca <amigaone@optusnet.com.au>]

Hi,

We need some information to try and fix a problem we have with the most 
recent 2.4.x kernels (a particular area of memory where the NVRAM is 
located, cannot be accessed anymore once the Linux kernel boots, looks 
like it's being mapped out).

The machine uses a 745x CPU, and I understand that the memory on these 
machines is mapped using the BAT registers.

Is this correct, and if so, which registers are used/what is the 
arrangement? (Or where could I look to get this info).

Thanks,

Regards,

Ross..