[coreboot] Could I replace memmove function?

[Peter Stuge]

David Hendricks wrote:
> There is CONFIG_CPU_DMP_VORTEX86EX which might be useful.

I disagree.


> Maybe Andrew can try something like this:
..
> +ifeq ($(CONFIG_CPU_DMP_VORTEX86EX),y)
> +# Old memmove implementation from Linux always use REP MOVSL
> +# which is much faster on some CPUs.
> +ramstage-y += memmove_old.c
> +romstage-y += memmove_old.c
> +smm-y += memmove_old.c

The file is called memmove_old.c and not memmove_DMP_VORTEX86EX.c, so
if Kconfig should be involved the controlling variable really needs to
be one with a meaningful name, and it would get selected (only) by the
Vortex86 CPU Kconfig files.

I would prefer a patch for our memmove, unless there is a strong
reason not to use REP also in the general case.


//Peter