Thread (4 messages) 4 messages, 3 authors, 2002-04-23

Re: MPC8240 PTE setup

From: Dan Malek <hidden>
Date: 2002-04-22 19:49:06

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
addresses.
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)?


	-- Dan


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