Re: Unidentified subject!

[Bill Gatliff <bgat@billgatliff.com>]

James:

James wrote:

> This device looks interesting. However, I could not find any
> information about the single most important issue in
> firmware development (JTAG port). Many SOC devices,
> if indeed this is a system on a chip, do not properly
> implement a JTAG interface, or it is dysfunctional.
>  

I just took a look at the (somewhat unenlightening) datasheet for the 
MMSP2, section 2.2 mentions JTAG interface pins.  Apparently the pins 
are somewhat accessible, at least on the GP32:

http://www.cobbleware.com/gp32/gp32jtag.html

That link came from the GP32X boards:

http://www.gp32x.com/board/index.php?showtopic=21188

> Another killer point seems to be a lack of 2.6.x kernel
> options. This may be do the SOC's details being
> obscure, or did I miss that web page.....?
>  

Well, 2.6 does support 920T's, so there's a chance that the base kernel 
wouldn't be too hard to get running.  This guy claims to be working on it:

http://www.gp32x.com/board/lofiversion/index.php/t17580.html

> Any other Debian-arm products, with a JTAG
> interface, that is fully functional and documented
> would be of keen interest to me. (suggestions)
>  

The Cogent CSB6xx boards are all fully documented, have fully-functional 
JTAG ports, and run debian-arm (except the MIPS platforms).  :)


b.g.

--
Bill Gatliff
bgat@billgatliff.com