Re: [9fans] gdbfs

[Steven Stallion <sstallion@gmail.com>]

On Thu, Dec 19, 2013 at 2:38 AM, Gorka Guardiola Muzquiz
<paurea@gmail.com> wrote:
> ¿Have you taken a look at the jtag tar in my contrib?
> It is described here
> http://lsub.org/ls/export/jtag.pdf
> I don´t know enough about the RealView ICE, but if you write
> the right module for whatever drives the serial communications
> maybe you can drive the jtag directly.
> I don´t know if that would give you anything you don´t have already
> but just in case you didn´t know :-)

I have indeed! I started with jtagfs and an Amontec JTAGkey. Much to
my chagrin, Cortex-A15s require more advanced hardware than the FTDI
debuggers. The RVI can't be driven directly unless you implement RDDI,
which is only distributed for Linux and Windows as precompiled
libraries. I played with the idea of reverse-engineering the library,
but after looking at a couple of packet traces, it would have been
more work than I will will to put out.

Cheers,

Steve