[coreboot] USB debug cables and emulation

Joseph Smith joe at settoplinux.org
Thu Jun 26 19:01:45 CEST 2008

On Thu, 26 Jun 2008 12:48:25 -0400, Joseph Smith <joe at settoplinux.org>
>>> I read somewhere you could make one, but I don't know how difficult
> that
>>> would be. I was always wondering if you could just use two USB ->
> Serial
>>> adapters with a null modem cable in the middle??
>> Nope, won't work. You need a USB device that explicitly understands USB
>> debug mode. In this mode you don't have to set up the BARs (ie no memory
>> required) to talk USB.
> This guy was able to get it working with one USB -> Serial adapter
> (reversed) on an iMac (with ICH7) using Solaris as the host:
> http://blogs.sun.com/szhou/entry/solaris_on_efi_imac
I have to say, the more I think about this, it would be really cool to
setup coreboot to do the same:-)

Joseph Smith

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