[U-Boot] [PATCH 8/8] powerpc/85xx: Add memory test feature for mpc85xx.

[sun york-R58495 <R58495@freescale.com>]

Wolfgang,

As Timur pointed out, the post framework doesn't work for us. After U-boot relocate itself to RAM, we have only 2GB memory to test. The best place is before relocation. Many other boards do that. Following your idea of reusing code, I can only reuse the test pattern generator. I am open to suggestions.

York Sun
----- Original Message -----
From:"Wolfgang Denk" <wd@denx.de>
To:"York Sun" <yorksun@freescale.com>
Cc:"Timur Tabi" <timur.tabi@gmail.com>, "Kumar Gala" <galak@kernel.crashing.org>, "u-boot at lists.denx.de" <u-boot@lists.denx.de>
Sent:7/28/2010 4:50 PM
Subject:Re: [U-Boot] [PATCH 8/8] powerpc/85xx: Add memory test feature for mpc85xx.


Dear York Sun,

In message <1280351179.8571.63.camel@oslab-l1> you wrote:
> 
> > We already have too many different implementations of a memory test in
> > U-Boot, and I will not accept adding yet another one.
> > 
> I can reuse your testing code but have to move the desired code out of
> memory.c file to avoid the need for CONFIG_POST and
> CONFIG_SYS_POST_MEMORY. I also add a progress indicator. My testing

NAK, and NAK.

Please integrate your code into the existing POST framework instead,
as a number of other boards already did.

A progress indicator may be a nice little toy, but how does it
integrate into the POST framework?

> target is 2GB at a time, up to physically memory size which is easily
> over 8GB. Without progress indicator, it feels hung when it is actually
> running.

Yes, memory testing takes time. In the context of a power-on self
test (and this is what you are doing, right?) we should take care to
fit it into the existing framework, though.

> Please take a look at the patch below.

Instead of integrating your needs into an existing framework you
invent yet another one. I don't want to have this, sorry.

Best regards,

Wolfgang Denk

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