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Re: Elan SC520 - problem with MTD
On Die, 24 Apr 2001 you wrote:
> Wow! Where (and why ;) were your hiding this gem for so long?!!!
It's been there all the time ....
> This is the answer to a lot of maiden's prayers! Robert, are you the "rob" in the
> CVS Id in the files?
If there is enough public interest in this, maybe I can setup a home
page/public CVS for it some day. If only I had more time :-(
> P.S. I saw a couple of mails ago that some folks mentioned that I have
> successfully booted the linux kernel directly out of flash and installed
> the JFFS(2) as the root
> fs (and a ext2 fs as a compressed fs in ramdisk). That is all true.
> I have supplied, on request, the files to boot the kernel out of flash. The
> original source of the hacked kernel boot code to do this was AMD (and it's
> open source of course).
> Please let me know if you want those.
Yes, please !
> HOWEVER! The solution is not a very
> elegant one.
> It involves making changes to some startup files (bootset.S and setup.S) in the
> Linux startup code itself.
I am currently writing code to support booting the SC520 CDP from ROM
without BIOS using the above mentioned ROM bootloader (BTW, it's name is
What I'm mostly interested in is the startup/initialization sequence for that
board. Once it has been properly initialized, the generic ROLO code should
work out of the box.
I have some code that does the basic SC520 initialization right after
reset and I am now trying to initialize the Super I/O chip (I have just
received the chip manual from Acerlabs). After that, I need to figure out a way
to setup the set up the PCI bridge... Another thing that is still missing in my
code is a proper RAM size detection.
So any working code you might have along these lines -no matter how ugly-
would probably be helpful to me.
Robert Kaiser email: firstname.lastname@example.org
SYSGO RTS GmbH
Am Pfaffenstein 14 phone: (49) 6136 9948-762
D-55270 Klein-Winternheim / Germany fax: (49) 6136 9948-10
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