[SeaBIOS] [PATCH RFC] Quite hacky patch to get USB ehci working on bare metal.

Christian Gmeiner christian.gmeiner at gmail.com
Tue Jan 15 08:16:20 CET 2013

2013/1/15 Kevin O'Connor <kevin at koconnor.net>:
> On Mon, Jan 14, 2013 at 04:55:33PM +0100, Christian Gmeiner wrote:
>> Some results can be found here:
>> http://dpaste.com/876523/
>> Before this patch I got a timeout at Inquiry.
> Thanks.
> How does this patch compare to your other usb-ehci patch (usb-ehci:
> maintain toggle state)?

This RFC version works better... with the old one every 3rd boot some
ehci bulk transfers timed out. Verified
with my ellisys usb explorer. I will spend 1-3 hours today to get some
sort of OS booting via USB.

> BTW, the current usb-ehci code does work on "bare metal" on several
> different boards.  What board(s) did this help on?

This patch helps on a lx800 platform with a cs5536. As this patch is
RFC I am quite happy if some USB
expert can share his/her thoughts.
Christian Gmeiner, MSc

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