Yes it's a kernel command line arg, it is board specific token introduced to control the serial console. if defined serial console should not be enabled.
we have this in place for other system initializing system - sytemV , where depending On Fri, Apr 17, 2015 at 4:24 PM, Lennart Poettering <[email protected] <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > On Fri, 17.04.15 15:54, Praveen kumar R ([email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>) wrote: > > > I have a token passed on by command line argument on which I need to > decide > > to start the serial > > On which command line? Kernel command line? What kind of "token"? > > > console or not. I plan to tweak the getty*ttyS0.service and add the > > script which validates the token and starts the console. > > > > Is this the right approach or is there any better way of handling it ?? > > To get a login getty on the serial port its sufficient to add > console=ttyS0... to the kernel cmdline. systemd automatically starts a > serial getty automatically on the first terminal the kernel console is > pointing to. > > Lennart > > -- > Lennart Poettering, Red Hat >
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