Paging code is tricky and figuring out what is wrong with it can be a
pain. This patch tries to ease the burden by giving a little more
information for prefetch and data aborts, dumping the Instruction Fault
Address Register (IFAR), Instruction Fault Status Register (IFSR) and
Auxiliary Instruction Fault Status Register (AIFSR) or the respective
Data registers. These contain additional information about the cause of
the abort (internal/external, write or read, fault subtype, etc.) and
the faulting address.
BUG=None
TEST=I have read through enough imprecise asynchronous external abort
reports with this patch that I learned the bit pattern by heart.
Change-Id: I56a0557d4257f40b5b30c559c84eaf9b9f729099
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/223784
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
bf3b492412