c5, Instruction Fault Status Register

Note: This was originally posted on 5th January 2012 at http://forums.arm.com

I have implemented a MMU logic for the Cortex A8 on the BeagleBoard. It seems to work well. But after handling the first data abort and creating a page because no page is present right now, I am getting a prefetch abort with the State 1008 (hex) which means: bx01000 precise external abort, nontranslation (found at http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0344k/Bgbjhija.html).

But I have no clue what that means. Can someone please give me some more information about this error? If you need more information don't hesitate to ask me.

Thanks in advance,
Michail
  • Note: This was originally posted on 8th January 2012 at http://forums.arm.com

    Thank you for your quick response.

    I just solved the problem. When I received an interrupt I did set the master table pointer to the kernel's master table address, but didn't set it back to the calling process' master table.
  • Note: This was originally posted on 6th January 2012 at http://forums.arm.com

    It means that the address translation processor "succeeded".  That is, the processor was able to read the translation table, and the entry marks the memory as read/executable.

    But that when it then accessed the physical address specified by the translation table entry, the memory system returned an error.
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