On Thu, Apr 19, 2001 at 10:01:47AM +0200, Tom Appermont wrote:
> > Sane designs make sure that peripherals are at physical addresses of 512mb
> > or less so can be addressed through KSEG1 without using TLB entries. So
> > far the only violation of this rule are the Jazz systems.
> In the setup.c file for the jazz board, is written:
> add_wired_entry (0x02000017, 0x03c00017, 0xe0000000, PM_64K);
> add_wired_entry (0x02400017, 0x02440017, 0xe2000000, PM_16M);
> add_wired_entry (0x01800017, 0x01000017, 0xe4000000, PM_4M);
> Why do these physical addresses which are all below 512MB need TLB entries?
These are not physical addresses but entry entries so actually are
addresses outside the low 512mb.