From owner-freebsd-arm@FreeBSD.ORG Sat Apr 26 22:29:38 2014 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 138E3FD1 for ; Sat, 26 Apr 2014 22:29:38 +0000 (UTC) Received: from mail-wg0-x22f.google.com (mail-wg0-x22f.google.com [IPv6:2a00:1450:400c:c00::22f]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A3AEC1BA3 for ; Sat, 26 Apr 2014 22:29:37 +0000 (UTC) Received: by mail-wg0-f47.google.com with SMTP id n12so1710921wgh.18 for ; Sat, 26 Apr 2014 15:29:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=9On4Bs3q+uiMD2jABpzu/yOzkwINUtXsD9hZXb7zNeQ=; b=MVyF3G0HM1pUllwJI/BCKAPG6oOYMEG/iz6ym6X/FBN1ED+2/b0matjpKIOVgkxFOP mAc/pwDaNNUKuLbvCQHh6bsSnpH7OoltPSIDx/685Rk4dLwkdoRiHzb4/xbi12tnj+aB X8uHbsnor1x6SEHyb2le5O7+M8M2XAvgXaAQIt2iZcjJD95Qq0/+xYQgv0F/dxknV5zJ rnYVaNVBOuR0rZw+ZKQUpHxqu20VaoCKERB12O9qNm3n+4thh6YCiQZdjTf2L8GyYONE rQQEpiw2eEFzFVNFXN12VO7rYezoowXuZ7/b+ydve5uMltCEctwUYgekhU3mXdvAflVu sxsA== MIME-Version: 1.0 X-Received: by 10.180.76.146 with SMTP id k18mr9023615wiw.5.1398551375849; Sat, 26 Apr 2014 15:29:35 -0700 (PDT) Received: by 10.217.10.195 with HTTP; Sat, 26 Apr 2014 15:29:35 -0700 (PDT) Date: Sat, 26 Apr 2014 18:29:35 -0400 Message-ID: Subject: Looking for FreeBSD u-boot/kernel debugging help (BeagleBone Black) From: Winston Smith To: FreeBSD ARM Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Apr 2014 22:29:38 -0000 I'm looking for any wisdom on debugging FreeBSD/u-boot on the BBB. I have had some luck with 11-CURRENT, but I think 10-STABLE is probably a more realistic target. I did find this while Googling: https://wiki.freebsd.org/EmbeddedHandbook But it's not very complete. I also discovered that if I disconnect my serial terminal and reconnect it, it seems to bring the FreeBSD kernel to a debug prompt of sorts -- is there any documentation on this? Thanks.