Re: serial console in early boot

On Sun, 24 Aug 2014 18:02:29 -0400, John de la Garza said:

I would expect that the serial line wouldn't be ready and that qemu would behave like actual hardware.

Why? QEMU knows it's running as a user process. Do you see anywhere in the documentation that it guarantees emulation of real hardware? (Hint - it's connecting your earlyprintk console to stdout, and as long as it's doing that, there's no reason for it to *not* go the extra step and provide emulation of the UART so you can debug early kernel problems....)