On Fri, Jul 25, 2008 at 2:51 AM, Dominic Rath <[EMAIL PROTECTED]> wrote:
> On Thursday 24 July 2008 21:37:41 Brian Hutchinson wrote: > > Hi, > > > > Could someone point me in the right direction so I don't go in the weeds > > too far? > > > > I know this is mostly for ARM but I would really like to take a interface > > line the Amontec JAGKey Tiny and make an adaptor to match the pinouts of > an > > AMD Elan SC520 (Soekris net4526 board to be more specific). > > > > I'd like to know how to take the BSDL file I have for the SC520 and what > > all I would need to do to get a JTAG interface working with it and what I > > would need to do in order to use OpenOCD tools with it. > > Boundary scan does not offer any debugging features. It gives you control > over > the external pins of the device. I've used commercial debuggers that use the 4 JTAG signals in order to establish a debugging session and I know the ARM guys have gdbserver going so I know it is possible ... I just don't know how to go about learning it. That is why I'm posting ... so you guys can "show me the way". Right now I would be just happy being able to flash the Soekris board I'm using as I would like to port a different bios to it but I would like to learn how to get gdb to work over the jtag link in the future. > > > I would also like to use GDB in order to debug the target so would > looking > > at the ARM GDB Server be a start to figure out how to port such a thing > to > > the SC520? > > Debugging requires support from dedicated on-chip debug circuitry. > Apparently > the Elan SC520 has something they call "AMDebug", which probably does what > you want, but I'm not sure if the necessary information is publicly > available. AMDebug is a propritery AMD thing that I'm not interested in. > > > > I've always been a user of commercial JTAG products and now want to learn > > how this all really works so I can tinker with boards at home on a low > cost > > basis. > > > > Thank you! > > > > Brian > > Best regards, > > Dominic > _______________________________________________ > Openocd-development mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/openocd-development >
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