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Re: Has anyone successfully built a FatSlug?

On Sat, May 12, 2007 at 06:06:57PM +0100, Steve Gane wrote:
> Hi all,
> I think Apex has a problem with 64M in one bank (two chips), because when
> the Slug hardware is configured for more than 64M, as it is when Apex scans,
> the 64M appears (at least on my slug!) as four separate 16M regions with 
> 16M
> in between, which fools Apex's scanner.
> I've sent Marc an email with more technical detail, and I may try to 
> mend it myself.
> Meanwhile, I reiterate my first question:
> Has anyone used Apex 1.4.17 or 1.4.18 to boot a 64MB, two chip, FatSlug?
> I suspect the answer is no. I think Apex will boot a 128MB FatSlug but
> not a 64MB.

Interesting.  I'll look more closely at your dump.  Yes, I know that 2
chips and 128MiB works.  I would have guessed that 2 cips and 64MiB
would work as well, but there may be something wrong in the order of
the scan.

> Steve Gane wrote:
> >Hi everyone,
> >
> >I'm trying to use Apex 1.4.18 to boot my 64M FatSlug, but I'm not 
> >having much luck.
> >I'm using the "proper" Debian/NSLU2 Etch.
> >
> >I can build Apex on a PC, swap it, prepend a header, pad it with FF, 
> >and write it to mtdblock2.
> >(http://www.nslu2-linux.org/wiki/Debian/CompileApex and
> >http://wiki.buici.com/wiki/NSLU2_Memory_Expansion_--_Fat_Slug helped a 
> >lot!)
> >I have a serial port to observe the boot.
> >
> >But whatever I do, it always reports 32 MiB:
> >- Whether I build Apex with 0x2000000 or 0x4000000 memory bank size
> >- Whether or not I do "sdram-init; memscan -u 0+256m" or "sdram-init; 
> >memscan -u 0+64m"
> >sdram-init always detects 1 pair of 128 Mib chips = 32 MiB
> >memscan always says there's only 32MB.
> >
> >I used to boot with a hacked Redboot (that set the SDRAM config for 
> >64M) with the old
> >bootstrapped Debian; now I can't install stuff because I don't have 
> >enough memory :-(
> >
> >Steve
> >
> >
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