[coreboot] bug YT as EHCI gadget for coreboot

Denis 'GNUtoo' Carikli GNUtoo at no-log.org
Fri Sep 5 08:17:06 CEST 2014


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On Wed, 03 Sep 2014 16:43:36 +0200
Marek Doležel <xdolez67 at stud.feec.vutbr.cz> wrote:

> Hello,
> 
> I noticed you are in connection with buglabs community. 
> 
> I couldn't find any option to buy this device. I guess the device is
> developed only for "Big players" as mentioned on website.
> 
> It would be great if I could get hands on that device. You have one
> right? How hard can it be to get DEMO or to get option to purchase one
> from them?
> 
> As mentioned in subject I am trying some coreboot now. I keep track
> of what I do here
> http://www.stud.feec.vutbr.cz/~xdolez67/coreboot/coreboot-porting.html

> I use ThinkPad X200 image/source code as reference (don't have it) to
> make coreboot work on ThinkPad R400/T400. However I tried many times
> and can't get serial output(I am not hardcore embedded guy yet). So I
> realized I need to get EHCI gadget to get any further and if that also
> fails I need to also get ThinkPad X200.
Coreboot mailing list probably has good hints here. I've cc-ed the list
for that.

> I see this options:
> 	 1. get for free or purchase bug device,
> 	 2. get 2x LCSoft FX2LP (soldering required:( but cheap )
> 	 3. get bbb (too expensive 90$ incl. shipping to czech

4. Use your rasberry and try to make g_dbgp work there, to test use the
linux kernel with earlyprintk=dbgp. Note that earlyprintk=dbgp doesn't
work out of the box on all distro's kernels, you need the right
compilation options to make it work.

Denis.
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