svn commit: r262957 - in head/etc: etc.arm etc.ia64 etc.mips etc.powerpc etc.sparc64
nwhitehorn at freebsd.org
Wed Apr 30 05:44:17 UTC 2014
On 03/09/14 14:06, Marcel Moolenaar wrote:
> Author: marcel
> Date: Sun Mar 9 21:06:22 2014
> New Revision: 262957
> URL: http://svnweb.freebsd.org/changeset/base/262957
> Change the terminal type/class for enabled serial lines to 3wire. This
> allows us to change the uart(4) driver to not hardcode specific line
> settings for the serial console.
> A terminal type of 3wire makes sure the console still works when no DCD
> signal is present, which preserves behviour. When it is known that the
> terminal server (or DCE in general) provides DCD, a terminal type/class
> of std can be used. This has the effect of being logged out when one
> disconnects from the console -- improving security overall.
> Likewise, when uart(4) does not fixate the baudrate, one can change
> the terminal type/class to set a specific baudrate. An operator can use
> this to change the console speed mid-flight, without needing a reboot.
> Of course it helps in this respect if and when the firmware can be
> configured from the OS.
> The above mentioned capabilities depend on uart(4) being changed, which
> is to happen next.
Should we set onifconsole for x86 UARTs as well? That enables them if
they are the kernel console and is probably a user friendliness improvement.
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