topic MMU page table location in i.MX Processors

MMU page table location

elijahbrown — Fri, 27 Feb 2015 00:00:03 GMT

I've noticed that in the Freescale bare metal SDK, the MMU's page table is located in the first 16k of OCRAM starting at 0x900000. If you look at the processor reference manual for IMX6D/Q however, in figure 8.3 it shows the MMU table starting at 0x938000. Obviously the SDK works so it seems like the manual is wrong, but I'd like to get clarification on this. Thanks!

Re: MMU page table location

igorpadykov — Fri, 27 Feb 2015 01:17:25 GMT

Hi Elijah

for i.MX6QD OCRAM range is 0x900000-0x93FFFF,

MMU can be assigned to any address, this depends on application.

iROM use one ranges, SDK other, Linux may have another choices.

Best regards

igor

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Re: MMU page table location

elijahbrown — Fri, 27 Feb 2015 01:39:58 GMT

Ok I see, I missed the line where it writes the address to TTBR0. Thanks.