On Wed, 22 Mar 2006, Mark Schank wrote:
I am working with a Au1550 based system an am trying to upgrade
from the 2.6.12 kernel to the 2.6.16 kernel . I have noticed that the
au1x00_uart.c driver has been remove and replaced with functionality in
8250.c and 8250_au1x00.c. So far, I have been unable to get the early
console running. Under this new driver model, what is the proper
way to bring up an early console on a Au1550 internal serial port?
Have you enabled the console for 8250-based serial ports?
(CONFIG_SERIAL_8250_CONSOLE)
Another issue might be if you have got some PCI-based serial ports in the
system, because they will be assigned before the internal ones. So you
might end up having the console on a PCI serial port.
Third: There is a bug in the new driver regarding divisor settings, but
the console should still be working since the boot loader will init the
uart properly. (I've posted a patch for this bug earlier:
http://www.linux-mips.org/archives/linux-mips/2006-03/msg00041.html).
Jon
