On 2012-Feb-26 16:52 , Mark Cave-Ayland wrote:
Hmmm so it looks like the serial port is connected via ebus on a PCI-based SPARC system.
Correct. The "se" is a Siemens ESCC 82532, which is used for the serial console. In addition, there are two 16550-emulating serial ports used for keyboard and mouse.
I've so far managed to cross-compile myself a -O0 -g 2.6.32 Linux SPARC64 kernel so I can step things through to try and figure out why the kernel can't seem to write to the console when switching away from CIF to accessing the serial port directly...