Olaf Hering wrote:

On Mon, Apr 09, Matt Sealey wrote:

  

quoted

It is entirely possible that a user may redirect the OF console output to
the PSC6 controller or another internal or external serial device (PCI
serial controller or so). In this case, the boot console will simply switch
to the UART on the back, which may be some other custom device and not a
valid console.
    

How many serial drivers are enabled in the public Efika firmware?
With my change, both /failsafe and the /builtin/serial work.
Both have device_type == "serial"
  

If I follow the logic of the patch correctly, as soon as there is no
"console=" in the command line and that the linux,stdout-path has a
device_type "serial", you add ttyPSC0 as console ?

The user could have plugged a console on the IRDA PSC and used a
bootscript to change the OF tree appropriately.
Or he could have put a PCI multi IO card and set the stdout to it ...

In all those cases, the ttyPSC0 is bogus ...

But in those "special cases", I guess it's not too much to ask the user
to provide a "console=" in the command line.


    Sylvain