On Fri, 2015-02-20 at 16:59 +0100, Hans de Goede wrote:
While discussing with some people how to get the Linux kernel to do the right thing wrt sending output to both the serial console and the hdmi out / lcd screen when booting on ARM devices, Grant Likely pointed out that there already is a solution for this.
All we need to do is set the /chosen/stdout-path fdt property, and if no console= arguments were specified on the kernel commandline the kernel will honor this and add this device as a console (next to the primary video output on hdmi).
And u-boot already has support for setting this, all we need to do is define OF_STDOUT_PATH and then everything will just work ootb, without people needing to meddle with adding console= arguments in extlinux.conf .
Signed-off-by: Hans de Goede hdegoede@redhat.com
Acked-by: Ian Campbell ijc@hellion.org.uk