From: Andrey Volkov <avolkov@varma-el•com>
To: bennett78 <bennett78@digis•net>
Cc: Sylvain Munaut <tnt@246tNt•com>, linuxppc-embedded@ozlabs•org
Subject: Re: Bestcomm Firmware update
Date: Fri, 31 Mar 2006 15:41:04 +0400 [thread overview]
Message-ID: <884202836.20060331154104@varma-el.com> (raw)
In-Reply-To: <442C5A75.7030107@digis.net>
Hello, Frank.
On Friday, March 31, 2006, bennett78 wrote:
> SoSoComm Dudes:
VERY, VERY BIG thanks to you :-))), finally we can do something more
sensible with it (like scatter-gather).
> I was able to contact Davide Santo, AN2604 "Introduction to BestComm".
> He admitted
> the short commings of his document in the area of Firmware instruction
> info and gave
> me a name of a guy, Ed in the ASIC design area in Austin. Ed has agreed
> to answer
> questions, push for resources to provide a support tool and provided me
> with a document
> from their head programmer "SmartDMA Hand-Assembly Guides" (see attached
> pdf).
> With this secret decoded ring I was able to put together a disassembler,
> see attached
> disasm.c. Cut and paste your favorite Task into fw[] array at the
> beginning,
> "cc -o d disasm.c ; d" It's not perfect, but useful- Enjoy. Sorry I'm not
> sure where or if you guys want to check this stuff into a git
> repository, somewhere
> and hope ozlabs is not fussy about attachments!
But it could be start point for a kernel compiler :).
> If we can formulate a list of questions Ed might be able to help, I'll
> start:
> o what does init=31 mean?
> AN2604 say init=0 means always requestor and 31 is reserved but
> referenced
> alot in the F/W comments
> o Need more info on how MORE works
> o Tell us about LCD levels. Only 2? (let's call a LCD indent a level)
> LCD seems to reset DRD to 1A. DRD2B1or2 follow a DRD2A (ext=1)?
> o LCD[28:23]orLCD[20:15] or LCD[11:6] what is extraN?
> drop 101nnn - extraN
> add 1nnnnn - indexN
> o how many DRD2B1[2] can be stacked up?
> o when is/can a LDC Literal used? and how?
I'll reread my drafts at next week too, so may be this list will be
extended.
--
Regards,
Andrey Volkov
next prev parent reply other threads:[~2006-03-31 12:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-30 22:23 Bestcomm Firmware update bennett78
2006-03-31 6:12 ` Sylvain Munaut
2006-03-31 11:41 ` Andrey Volkov [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-08-14 2:10 Frank Bennett
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