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Date: Thu, 9 Aug 2018 11:29:04 +0300
From: Konstantin Belousov <kostikbel@gmail.com>
To: Johannes Lundberg <johalun0@gmail.com>
Cc: freebsd-current <freebsd-current@freebsd.org>
Subject: Re: Early kernel boot log?
Message-ID: <20180809082904.GI1884@kib.kiev.ua>
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On Thu, Aug 09, 2018 at 08:54:31AM +0100, Johannes Lundberg wrote:
> Hi
> 
> So I believe the reason I'm not seeing and printf output in dmesg is that
> it is too early in some functions.
> For example
> machdep.s
>  getmemsize()
>  add_efi_map_entries()
>  etc
> 
> However, these functions do contain debug printf statements so if they're
> logging to somewhere, where/how can I see this?
> 
> I also tried booting in bhyve too see if I could get any output via serial
> console but nothing there either.
Disable efi console, only leaving comconsole around, then set
debug.late_console=0
in loader.

> 
> printfs in cpu_startup() does give me output in dmesg.
> 
> Cheers
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