Date: Fri, 14 Feb 2003 09:46:35 +0100 From: Sameh Ghane <sw@anthologeek.net> To: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp> Cc: freebsd-arch@freebsd.org Subject: Re: You may want to have FireWire.... Message-ID: <20030214084635.GB87002@anthologeek.net> In-Reply-To: <ybsd6lxsy7d.wl@ett.sat.t.u-tokyo.ac.jp> References: <20030209193737.D91611DEAB@www.fastmail.fm> <ybsd6lxsy7d.wl@ett.sat.t.u-tokyo.ac.jp>
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Le (On) Wed, Feb 12, 2003 at 05:24:54PM +0900, Hidetoshi Shimokawa ecrivit (wrote): > Do you think this useful? I was waiting so much for something like this ! I finally found a laptop with a serial port built-in, but it's a really good idea as nowadays they're rare. > I wrote this driver(dcons(4)) and utility(fwchat(8)) for a replacement > of the serial console. This framework exploits physical access > faculty of the IEEE1394 OHCI chip(fwochi(4)). This means that you > cannot access this console until the OHCI is initialized on target > system but once it's initialized, there is no need of OS support to > do transactions on the FireWire bus until next bus reset occurs. This > enables us to use this console as DDB/GDB port too. By analogy with > pty(4), dcons(4) acts like a slave device and fwchat(8) acts like a > master device, but they are on different machines and interact via > FireWire. Please note dcons(4) is device(FireWire)-independent by > itself. (And almost plathome independent) Humm, this won't allow people to grab boot messages before a freeze/hang/panic at boot time then ? Thank you for this feature ! Cheers, -- Sameh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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