Date: Fri, 20 May 2005 19:58:43 +1000 From: Peter Grehan <grehan@freebsd.org> To: John-Mark Gurney <gurney_j@resnet.uoregon.edu> Cc: freebsd-ppc@freebsd.org Subject: Re: USB Serial Console? Message-ID: <428DB4D3.20502@freebsd.org> In-Reply-To: <20050520065329.GD959@funkthat.com> References: <a06210235beb28238b0b8@[192.168.1.101]> <428D0AE8.8040308@freebsd.org> <20050520065329.GD959@funkthat.com>
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>> In a similar vein, Firewire *can* be used as a console after it's >>probed, but there is the same issue with it not being supported by OFW. > > > This isn't quite true.. Due to the implementation of console over > firewire, it will work before it is probed... This is due to the fact > that console over firewire examines the memory directly (becaue firewire > supports reading/writing memory w/o the host cpu's intervention), and > doesn't need anything special to be initalized... Well... only if the OHCI i/f has been enabled and is allowing physical access. If it hasn't, it would be a bit of a task to do this in the loader. > Recently, loader was improved to support dcons, and support hand off > of the buffer from loader to kernel... I haven't tried this new and > improved loader, but it's suppose to work... Has that been committed to the loader ? I couldn't find any reference to dcons in the sys/boot dir, though there is conditional _BOOT code in sys/dcons and I can see the loader->kernel buf handoff code in dcons_os.c later, Peter.
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