[U-Boot] [PATCH v4] Add initial support for Wandboard dual lite and solo.

[Wolfgang Denk <wd@denx.de>]

Dear Fabio Estevam,

In message <CAOMZO5D6NoTKtvx0+BPFCZHsht7fa_Ksg-VNVaQ45Tjr-XwLaA@mail.gmail.com> you wrote:
> 
> >> +#define CONFIG_SYS_MEMTEST_START     0x10000000
> >> +#define CONFIG_SYS_MEMTEST_END               0x10010000
> >
> > This makes no sense.  Please see doc/README.memory-test
> 
> This is something that always causes me confusion.
> 
> doc/README.memory-test is not available in u-boot-imx. but I looked in
> the archives.

It's in master by now.

> What is a good and safe value, I should use here?

As explained, reasonable values for _START are just above the
exception vectors - if any, and _END should be a bit below the space
used for U-Boot's stack.

I have to admit that I don't understand what the i.MX6 port is doing
with the memory.  Normally, a warmboot should not change it's content,
yet here it does. Also I don't think there are exception vectors
actually used in low memory, because when I erase all this memory the
system still continues to run.

Sorry, I'm afraid I'm not much of a help here.

Best regards,

Wolfgang Denk

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