How to trun off udbg0 during bootup?

[SHAN Gavin]

Hi,

 I `m working on a freescale-MPC8379eRDB like board.And I want to trun off
kernel message during bootup.

 I tried to  modify "console = XXX" argument in uboot but it did not work(It
works on ARM). Kernel always print:

"console [udbg0] enabled"    or   "console handover: boot [*udbg0*] -> real
[ttyS1]"

Does anybody know how can I turn off this udbg0?

You may check arch/powerpc/kernel/udbg.c and disable registering the early
debug console driver. Then you can not see the output before the message
line like "-> real [ttyS1]"

Good luck,
Gavin

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