MPC8240 PTE setup
dan at embeddededge.com
Tue Apr 23 05:49:06 EST 2002
Robert Morin wrote:
> I have based my work on the Linux kernel 2.5.8 ....
You don't want to use that yet :-) Use the 2_4_devel kernel.
> ....I can see with my BDI2000 that the
> MMU is not translating correctly virtual addresses to physical
The mmu always translates correctly, your programming of it
is probably incorrect :-)
> .... I made a patch to use a BAT instead of PTE but
> this cause only to move the problem further upstream
What BAT did you change, and to what?
> I have check the parameter passed with ioremap() and it's
> ok. With the BDI2000, I get this with the phys command:
> phys 0xfdfd0000 (virtual address returned by ioremap)
> PHYS = 0xfffff000 END = 0xffffffff
> instead of
> PHYS 0xfdf40000 END = 0xfdffffff
So, you did 'virt = ioremap(0xfdf40000)' and virt == 0xfdfd0000?
Where did you call ioremap()? Are you trying to remap the EUMB registers
again (this is done in mpc10x_common.c for 82xx boards)?
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