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 ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/