tree 8a397dc944ac52d6537a69f8bd2285d1dd3e5daf
parent ff8ead49cc2c821dcbd4ba1a263c6195e6bbc684
author Andrew Scull <ascull@google.com> 1539868508 +0100
committer Andrew Scull <ascull@google.com> 1539876099 +0000

Disallow potentially unaligned data accesses.

Unaligned accesses are complicated. Some architectures don't allow them
at all, some optionally don't allow it and others split it into multiple
accesses for a single instruction. Accesses the straddle a page boundary
may fault for one part but not another adding to the complications. This
would add complexity to any ISA level proofs too.

ATF boots into a mode with unaligned accesses generating exceptions so
we need to turn it off to get running on the FVP.

Bug: 117551008
Change-Id: I42ebf0feb9b99db96e03c5e01b879f2500776aa5