From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Roese <sr@denx.de>
Date: Mon, 17 Dec 2007 07:53:35 +0100
Subject: [U-Boot-Users] POST tests without OCM
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References: <67BFAF42E016FC40ADE4EE73E07B706001024928@pks00005.kanatek.com>
Message-ID: <200712170753.36216.sr@denx.de>
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To: u-boot@lists.denx.de

On Saturday 15 December 2007, Craig Millen wrote:
> Yes I am using the 440EP.  I was referring to all the code in
> cpu/ppc4xx/commproc.c, like this section:
>
> #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
> void post_word_store (ulong a)
> {
> 	volatile void *save_addr = (volatile void *)(CFG_OCM_DATA_ADDR +
> CFG_POST_WORD_ADDR);
> 	*(volatile ulong *) save_addr = a;
> }
>
> ulong post_word_load (void)
> {
> 	volatile void *save_addr = (volatile void *)(CFG_OCM_DATA_ADDR +
> CFG_POST_WORD_ADDR);
> 	return *(volatile ulong *) save_addr;
> }

Yes, I was referring to this code too.

> There are a few more functions in there that refer to the OCM.
> What/where is the unused GPT that you are talking about?

GPT == General Purpose Timer. For example the GPT0_COMP6 register. But this is 
of course application/OS dependant. Could be that your application (Linux 
etc) is using this GPT register. But I doubt it.

BTW: We have an ACK from AMCC that the content of these registers is retained 
even during reset.

Best regards,
Stefan

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