[coreboot] cbfs alignment

[ron minnich]

we're going to support unaligned accesses, they make it easy. I think it's
silly that have data structs that are not 64-bit aligned, however :-)

ron

On Fri, Jul 17, 2015 at 3:05 PM Julius Werner <jwerner at chromium.org> wrote:

> Is there no way to make RISCV support unaligned accesses? There's a
> bunch of things in coreboot (and especially libpayload) that depend on
> it. I think that it generally makes code look much simpler (and run
> faster) if you can assume that it's supported across the board.
>
> If we do need to make CBFS unaligned access aware, we should do it
> with some inline functions that fold into a simple read on the
> platforms that support them in hardware.
>
> (Depending on how many such accesses you have and what your context
> switch costs are, it might also be feasible to emulate it in an
> exception handler... that way you wouldn't need to hunt down every
> single occurrence we've accumulated over the years.)
>
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