[U-Boot] [RFC] Add 64-bit data support for memory commands

[Wolfgang Denk]

Dear York Sun,

In message <1392240023-25205-1-git-send-email-yorksun at freescale.com> you wrote:
> For aarch64, unsigned long is 64-bit data. Memory commands should be fixed
> with u32 for 32-bit address access. A double word data size is added to
> support 64-bit data.
> 
> Signed-off-by: York Sun <yorksun at freescale.com>

Can you please make all this code conditional for 64 bit architectures
only, so that 32 bit systems do not suffer from the increased code
size?

Thanks.

Best regards,

Wolfgang Denk

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