K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2013-01-23T18:19:50.943703Z
K 7
svn:log
V 689
MFC 229435:
Add special loader environment variables 'comconsole_port' and
'comconsole_pcidev'. The former allows to set the base address of the
serial console i/o port. The later takes the string of the format
'bus:device:function:[bar]' as a value and uses the serial port attached
as PCI device at the specified location for console.

Both variants pass 'hw.uart.console' variable to the uart driver to
properly hand-over the kernel console.

Change allows to use ISA serial ports other than COM1 for the
loader/kernel console without loader recompilation. Also, you can use
PCI-attached port as the console, e.g. Intel AMT serial pseudo-port on
some motherboards based on Q67 chipset.

END