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Re: [lpc2000] Combining forces on open-source gdb stub

2005-12-16 by Bertrik Sikken

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Rob Jansen wrote:
> Bertrik Sikken wrote:
> 
>>I noticed that quite a lot of people are working on JTAG tools
>>for debugging on the LPC, but (as far as I know) there is still
>>no-one that has written an open-source gdb stub for the LPC family.
>> 
>>
> Well, there is openOCD from Dominic Rath. He created an "On-Chip Debug
> solution for embedded target systems based on the ARM7 and ARM9 family".
> His Diploma Thesis is a great piece of documentation with lots of
> information on JTAG and ARM7/9 debugging.
> The code even has support for the FT2232 from FTDI and schematics for
> the hardware are given in the thesis.
> 
> Look at: http://openocd.berlios.de/web/ It's worth it!

Yes, I saw it.
It does not support ARM7TDMI-S yet, only ARM7TDMI, right?

What would it take to add support for the ARM7TDMI-S / LPC family
to openocd?

Which existing project do you guys see as the best candidate for
extension with ARM7TDMI-S support?

I won't mind helping with writing the code or testing it.
So far I see the following differences to be handled:
* debug control ICE register (different bits)
* DCC control ICE register (different length)
* data bus scan chain size

Kind regards,
Bertrik
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