Messages in this thread | | | From | Måns Rullgård <> | Subject | Re: rfc: remove early_printk from a few arches? (blackfin, m68k, mips) | Date | Wed, 17 Dec 2014 22:30:16 +0000 |
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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
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