Re: rfc: remove early_printk from a few arches? (blackfin, m68k, mips)

Måns Rullgård
2014-12-17T22:30:16Z

Kevin Cernekee <cernekee@gmail.com> writes:

> On Wed, Dec 17, 2014 at 12:58 PM, Joe Perches <joe@perches.com> wrote:
>> It seems like early_printk can be configured into
>> a few architectures but also appear not to be used.
>>
>> $ git grep -w "early_printk"
> [snip]
>> arch/mips/kernel/Makefile:obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
>
> Nowadays I try to use OF_EARLYCON whenever possible, but when that has
> been unavailable, I have used arch/mips/kernel/early_printk.c to get
> console output before the serial driver is initialized. It runs very
> early in the boot sequence and has very few dependencies, which makes
> it useful for board bringup.

EARLY_PRINTK on MIPS is enabled just after prom_init(), well before
OF_EARLYCON is usable. I'd prefer if it stayed that way.

--
Måns Rullgård
mans@mansr.com