[coreboot] [PATCH] artecgroup/dbe62: Fix SPD_NUM_COLUMNS value (DIMM page size)
c-d.hailfinger.devel.2006 at gmx.net
Wed Aug 13 15:49:55 CEST 2008
On 13.08.2008 15:33, Mart Raudsepp wrote:
> Ühel kenal päeval, T, 2008-08-12 kell 20:02, kirjutas ron minnich:
>> ok, bad news. With that setting, my board never gets past dram init.
>> If you have more than one dbe62 board working with this setting, I'm
>> prepared to say I've got a busted board/dram chip/whatever.
> I chatted with Martin-Eric, and he is quite confident you have a DBE62
> with 128MB of RAM, as the unit that you received was an early prototype.
> Almost all other DBE62's in circulation have 256MB, including the one
> I'm working on. So I bet that is the issue here.
I'll test this on my DBE62 as well. Mine is a new one AFAICS.
> What we need for DBE61 anyway, is ability to provide multiple SPD's to
> try out - because DBE61 has various memory configurations in the wild -
> 128MB, 256MB, etc. But for the same RAM amount it uses always the same
> memory chips, so it boils down to supporting doing what we do in our
> code --> Set it up with the largest size, try writing to the highest
> addresses, if it succeeds continue and if it fails try the lower amount
> of RAM timings, etc. In coreboot-v3 Kconfig system we can also have a
> DBE61 specific setting for RAM size, defaulting to "automatic" that does
> this described testing, while those who build the image themselves for a
> certain unit with known RAM size can select the right one and not have
> it waste a few milliseconds on trying various.
I have code sitting on my disk which does that. Will try to clean up and
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