[coreboot] USB debug cables and emulation
Ken.Fuchs at bench.com
Ken.Fuchs at bench.com
Fri Jun 27 01:15:01 CEST 2008
> Joseph Smith wrote:
> >> The blog entry explicitly states that it didn't work.
> >>
> >>
> > Than you did not read all of it. At the end"I was finally
> > able to get
> > console output on the iMac"
Stefan Reinauer wrote:
> With the downside that you need a full blown USB stack around
> for that.
What about something less than a full USB stack similar to Porus?
http://porus.berlios.de/
> So it starts working some time after a kernel is running. I am sure
> that's pretty good for what it does, but it does not replace
> the DC20, unfortunately
Of course a JTAG device might be better. On the other hand,
a NET20DC ($83) is a real bargain compared to an American Arium
ECM-50 or for XDP JTAG, the ECM-XDP3.
http://www.coreboot.org/JTAG/BSDL_Guide probably should be updated.
The Intel and Arium links at the bottom of this page are
no longer valid.
Here's a Geode JTAG tool that may be useful to list on coreboot's
JTAG/BSDL Guide:
http://www.fs2.com/geodetools.html
http://www.fs2.com/pdfs/SNAV-GX.pdf
Back to USB Debug Port:
Here's an old USB Debug Port presentation that may be useful to
those new to the concept:
http://www.usb.org/developers/presentations/pres0602/john_keys.pdf
Is the NET20DC really the only USB Debug Device available? I tried
searching for others, but didn't find any.
Sincerely,
Ken Fuchs
P.S. Stefan, are you having e-mail filter problems?
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