On Sat, 6 Feb 2010 13:16:22 +0100 Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> wrote: > On Fri, Feb 05, 2010 at 11:28:57PM +0900, Yoichi Yuasa wrote: > > Signed-off-by: Yoichi Yuasa <yuasa@xxxxxxxxxxxxxx> > > --- > > arch/mips/Kconfig.debug | 8 ++++ > > arch/mips/include/asm/setup.h | 9 ++++ > > arch/mips/kernel/Makefile | 1 + > > arch/mips/kernel/early_printk_8250.c | 68 ++++++++++++++++++++++++++++++++++ > > 4 files changed, 86 insertions(+), 0 deletions(-) > > create mode 100644 arch/mips/kernel/early_printk_8250.c > > > > diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug > > index 32a010d..f5d739c 100644 > > --- a/arch/mips/Kconfig.debug > > +++ b/arch/mips/Kconfig.debug > > @@ -20,6 +20,14 @@ config EARLY_PRINTK > > doesn't cooperate with an X server. You should normally say N here, > > unless you want to debug such a crash. > > > > +config EARLY_PRINTK_8250 > > [..] > > have you looked at drivers/serial/8250_early.c ? Yes, I have. > It looks like it > was invented for some sort of early console on 8250 devices... The early printk is registered at the early boot stage(in setup_arch()). Yoichi
