From owner-freebsd-hackers@freebsd.org Tue Jul 16 12:22:27 2019 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 16B23AE8F1 for ; Tue, 16 Jul 2019 12:22:27 +0000 (UTC) (envelope-from vijaykumar9597@gmail.com) Received: from mail-qt1-x82f.google.com (mail-qt1-x82f.google.com [IPv6:2607:f8b0:4864:20::82f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 9CD1182A87 for ; Tue, 16 Jul 2019 12:22:25 +0000 (UTC) (envelope-from vijaykumar9597@gmail.com) Received: by mail-qt1-x82f.google.com with SMTP id r6so15086896qtt.0 for ; Tue, 16 Jul 2019 05:22:25 -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=UQw5WTWTI1loFbITSbkg4bOc1yA70SmpA/y7lu0sou4=; b=Ja2k2X47awdw697/gljtXFHm5/x+xazUIytcJip+OVc8dJHQlhjahcR6UBuI43esk/ QisDsOh2TI7DOIuci+O0pAENANxUDGhsIfIHcUwfX3Xawr2drmPCY+vI94Tj+H/ubVC7 bu8n+hycjdIX9xlB0IhfHsnSzsMKrcV3j3dye+bjCHHj6HvSs3Ioo7+i0EtAj9RnU2Jh /Az7tAA0PciO6E1cOEzzw/GT0XmY826VeqXt3Db1/W7GLA+vrAxxNuaOhn9Hp8i8lqjg zCMSI7et6Kwuz/VkFjZ+jzQ28GA5X+Ak5MEuoI/jcDlHJO9WjeHFqvCE1CzFu69pOE+A AWhA== 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=UQw5WTWTI1loFbITSbkg4bOc1yA70SmpA/y7lu0sou4=; b=dYK2//oMgOCnlN8VcOlk4K78OVEgBwdd1emGQeSvAUGOEfifwz7IHhG25wLljztUpT 2gzQJyOj4wL+UkEDL1SuM4nvMRl8I8rxBgVrwLipsehVCUNcn3P552XVXirXEfYII45q qoPnwp0DSm9riQ70xmL5yO3NLbkOQ/JVt3S1j/Pr3rdotBsF/w13AAPQq2VJ+BpcVYZy UOWIgYRG5tYp5jq0H9qjs5DI1xLbt0O3MFVhGb1I0K3rHBRqjKipXTW5HuxK/6l5geVa DXSNZUWTkNpd5ieRmZEjG1ofrmWnzvBCoK6RS2vyqmtBvGW5xER7B+s/DC2+npj4tWUA GCtA== X-Gm-Message-State: APjAAAWLpYVudiO2HlU2HLGLzfbrBBINeCB16wbwScD+Hlqhx+EISyuC 1bh5NoGB0rCJNvZKWqOAX9uEfcG0J7QSbO2bsE49D69vVDo= X-Google-Smtp-Source: APXvYqxKmg/7XXM6vEZhh+RkKdselbfaY8hvPJZF4nve5YhFDcgXo17kx9UyCsxSC1+o6O6zpou9eKV7TeY0awYTUBE= X-Received: by 2002:ac8:359a:: with SMTP id k26mr21762768qtb.87.1563279744854; Tue, 16 Jul 2019 05:22:24 -0700 (PDT) MIME-Version: 1.0 From: Vijay Kumar Banerjee Date: Tue, 16 Jul 2019 17:52:13 +0530 Message-ID: Subject: Question regarding framebuffer driver. To: freebsd-hackers@freebsd.org X-Rspamd-Queue-Id: 9CD1182A87 X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=Ja2k2X47; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of vijaykumar9597@gmail.com designates 2607:f8b0:4864:20::82f as permitted sender) smtp.mailfrom=vijaykumar9597@gmail.com X-Spamd-Result: default: False [-6.86 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.983,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MX_GOOD(-0.01)[cached: alt3.gmail-smtp-in.l.google.com]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[f.2.8.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(-3.01)[ip: (-9.40), ipnet: 2607:f8b0::/32(-3.17), asn: 15169(-2.44), country: US(-0.06)]; NEURAL_HAM_SHORT(-0.86)[-0.856,0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jul 2019 12:22:27 -0000 Hello everyone, I'm working on porting the framebuffer driver to RTEMS with Beaglebone Black as the target device. I have have already ported the am335x_lcd, tda19988, fbd and VT drivers, but the screen doesn't seem to "power up". >From the FreeBSD bootlog (12-RELEASE), I see that the screen is turning on after the VT initialization message, so I guess it's something that happens after the vt initialization that turns the screen on. So far I have ported the vt_fb and vt_core and it boots up well with the message : VT: initialize with new VT driver "fb". But the screen doesn't seem to turn on. Can someone please tell me or point me to the right place in code that is responsible for turning the screen on after VT initialization? Thank you, Vijay