[coreboot] USB debug cables and emulation

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Thu Jun 26 19:06:08 CEST 2008

On 26.06.2008 18:48, Joseph Smith wrote:
>>> 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

The blog entry explicitly states that it didn't work.



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