Re: console handover: boot [ttyB0] -> real [ttyS0]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Dec 15, 2009 at 12:39:06PM +1300, Michal Ludvig wrote:
...
> Is it configurable which one of ttyS0 - ttyS3 turns the ttyB0 boot
> console to?

ttyB0 is the "PDC Console" device name - linux kernel is using PDC
to push characters to the device defined in PDC (aka BIOS) to be console.
Interrupt the autoboot process and look at "in all".

ttyS0-ttyS3 are enumerations of Serial devices that the linux kernel
discovers when respective drivers are loaded. ttyB0 and ttyS<n> are
just different drivers accessing the same HW - preferably not at the
same time and that's why the kernel stops using ttyB0 later.

That make more sense?

grant
--
To unsubscribe from this list: send the line "unsubscribe linux-parisc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux SoC]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux