[U-Boot] [PATCH] POST: Added ECC memory test for mpc83xx.

[Michael Zaidman]

On Wed, Apr 7, 2010 at 6:10 PM, Timur Tabi <timur.tabi at gmail.com> wrote:
> On Wed, Apr 7, 2010 at 9:47 AM, Michael Zaidman
> <michael.zaidman at gmail.com> wrote:
>
>> The version #2 of the patch is located here
>> http://lists.denx.de/pipermail/u-boot/2010-April/069579.html
>
> What is ppcDWstore(), and why do you use it sometimes instead of
> __raw_writel()?  I see the code for ppcDWstore:
>
>        .globl  ppcDWstore
> ppcDWstore:
>        lfd     1, 0(r4)
>        stfd    1, 0(r3)
>        blr
>
> I just don't understand why it exists.
>

This is the fastest way to copy 64 bit words.

-michael