From owner-freebsd-current@freebsd.org  Thu Aug  9 07:55:11 2018
Return-Path: <owner-freebsd-current@freebsd.org>
Delivered-To: freebsd-current@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 04619105AAA4
 for <freebsd-current@mailman.ysv.freebsd.org>;
 Thu,  9 Aug 2018 07:55:11 +0000 (UTC)
 (envelope-from johalun0@gmail.com)
Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com
 [IPv6:2a00:1450:4864:20::42c])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 769DF85147
 for <freebsd-current@freebsd.org>; Thu,  9 Aug 2018 07:55:10 +0000 (UTC)
 (envelope-from johalun0@gmail.com)
Received: by mail-wr1-x42c.google.com with SMTP id h14-v6so4263716wrw.13
 for <freebsd-current@freebsd.org>; Thu, 09 Aug 2018 00:55:10 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;
 h=mime-version:from:date:message-id:subject:to;
 bh=KHF0IcOqC6srjDulf65PBAYYpeCJ/6Q3dpdGMLHSyCs=;
 b=I7vL14EbAuotMq8iGGslFX1EN/2sEUCpgFOeUz5F3bgQw0XynwcuE7OxDkpl9lCbEZ
 tXKJHdaMwJG4DU3F7/kz8jgS2OfpXb/IJjYDAyBbKNPUJwaHbgJBG6jn4FjBMH2Tfzdl
 5jinn0VIAN4pY/f+iCOehU9LBi1hqDIZ1ojffSP+iGx1CQDKo4nA80ZDPpVp8R6Bor8k
 mAfXzbM147t2iYTwbs+ZVJbFoGHtubcAUDb+0WZ7fXG5FeGzba3o/mnFa7VKTHxYX0cL
 VQFN7PnxQG6QmuGCNiqbCWbauD2XY/Ij8asXBu/WKkcs+Fo3pKrea1qyC/Lbh7J6kg3p
 jhfg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
 bh=KHF0IcOqC6srjDulf65PBAYYpeCJ/6Q3dpdGMLHSyCs=;
 b=T5uVxNesNlnGLsDCUsDvlcLWJjRyKnis/jaAhgUOZ3BvNjGTHKWxUm+oERzNs5KpOe
 0njJQgvRcGU99HBUVRw+QPthwQuOqNhLxo1czZvSqh4TSCGJleIyfdc4cHUNba6IP5Gw
 KxE7yvUJbEtFkfPj06og4jahHDK7rOR0KJhKm95qEF4Z4NsT9Alut+szZ/BSXqu0SxjA
 8o7yGk6epmmdvJDf2MRD+MARissiOyWTq/DMmcMSTtwM0+IPrms8ZwUqLJqBLUB06NAV
 DbgyRTw1IzAS2LX+OxwXWBEbFD2F83mE142EPFv3+gNErrEG0BRwnyMsi3uFrQksIihq
 KCZg==
X-Gm-Message-State: AOUpUlEjHGHbpOWE739KxhQmj+p+7QQnG2EPTmKJC1u3cBvL5JZDOn/J
 zguGHZyvHsStxOI4A/KlU8t03VEImISFgLRBVZnHKepj
X-Google-Smtp-Source: AA+uWPw1I0c9RDTpCITUpTlwR5VlBRjupX9vEM9hNBEOH9fcmhZ4UF1NGcC68KIPxVCPP6aFHjHg09QhJfk++MCnqbE=
X-Received: by 2002:adf:e584:: with SMTP id l4-v6mr643232wrm.190.1533801308332; 
 Thu, 09 Aug 2018 00:55:08 -0700 (PDT)
MIME-Version: 1.0
From: Johannes Lundberg <johalun0@gmail.com>
Date: Thu, 9 Aug 2018 08:54:31 +0100
Message-ID: <CAECmPwuJELN+L05z1a36DZd5FKCC=kRNS7swCjuqdA2uGPMpRA@mail.gmail.com>
Subject: Early kernel boot log?
To: freebsd-current <freebsd-current@freebsd.org>
Content-Type: text/plain; charset="UTF-8"
X-Content-Filtered-By: Mailman/MimeDel 2.1.27
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.27
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 09 Aug 2018 07:55:11 -0000

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.

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

Cheers