Logging boot messages from the loader

[Eugene Grosbein]

Hi!

How do I get boot messages generated by loader itself written to some log after successfull boot?
This is generic BIOS-based 11.3-STABLE/amd64 system with syscons console driver.

/var/run/dmesg.boot starts with kernel messages without previous lines from the loader.
Specifically, I need messages about loading kernel modules with full paths.