From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E185DC5DF61 for ; Thu, 7 Nov 2019 13:34:23 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AD6142178F for ; Thu, 7 Nov 2019 13:34:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="lJPtjIOO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AD6142178F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42534 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iShva-0004Dx-Sh for qemu-devel@archiver.kernel.org; Thu, 07 Nov 2019 08:34:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:38773) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iShui-0003Oj-Bo for qemu-devel@nongnu.org; Thu, 07 Nov 2019 08:33:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iShug-0001tI-Nu for qemu-devel@nongnu.org; Thu, 07 Nov 2019 08:33:28 -0500 Received: from mail-oi1-x231.google.com ([2607:f8b0:4864:20::231]:36754) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iShug-0001sQ-Hb for qemu-devel@nongnu.org; Thu, 07 Nov 2019 08:33:26 -0500 Received: by mail-oi1-x231.google.com with SMTP id j7so1958136oib.3 for ; Thu, 07 Nov 2019 05:33:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=i+RcGmsMAg5FId+iPS7U5MX0kTyX4WzklBsRpdxYx9U=; b=lJPtjIOOAYeAXg+i+fMrzIjtt+PhxJYXoTo4p35GP8G2dSOxmYa04yTa5A+bzl95dq pgeECcEoWhrDfHp0IuK4K/hmrwuAFaxfXygdd9hlaAaMK/RCq0Kghvv4OohedIjTiYZY BdyjhN6Fo+Obic1z7ZJULR/07Nh5n3B/z55qphaFcozTpHnFJl/GTiduisK4f9HNVbJm QH4B2kAdYkq53gRWVLGFAcBowhXyLpt7bUXbRSTIW7WhtOf/kvlmZJZwcVjzzF6Ut5l6 ylmbseCB9J8tLIQz3PbekIRAp9Syczp3aSxPV8OMg6vK/mI6slWyYIfGLrx6C7uLOVG0 Jd2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=i+RcGmsMAg5FId+iPS7U5MX0kTyX4WzklBsRpdxYx9U=; b=sM0FOHBs5eeFsaf7o2GqApQeNPNt42g67NdP2iJj3SoLxkjXZKH18+0zuNxjo8UgKE /QTBivOHBLUOjstPgRwt8Cih98MJ3UsIx94EMrTduJytFS7S7t01i/JGuzMVlnMt5J3r 70xn0LsuomgfcI/fdxWAFhvLj8lVtmVmCcy+fFePTevgqMD1jJUsu0FWiS/EuuWurL5c Rp8C785d/QTOUmXtHqsZDxZy0+o+nLa0cC/zFC1p1nPn/anL1RMxAHl9lkjAacU6q3TU oUzMGMZupPDzH7nRkE1VSVxaPWo78LLkFGiDCvwyX87xontrlVV54JAL2gWVxdTZQvVl pjMQ== X-Gm-Message-State: APjAAAXEmEKu1bmHRZleQl3USQO+nZ82a3Oj/PhsaF7Ua2i3TT2FpDgg AztVVG+pah+b+18ZemBx8PLSIcERv9jtUrlR6FU= X-Google-Smtp-Source: APXvYqxR95lCw7+AMnj6302OOorTj83K+akow/9IwxjchJxbI2GsAgbXvo4zOlrLClZ9tOF+04NdyuNo1FluBI/X1jc= X-Received: by 2002:a05:6808:9ae:: with SMTP id e14mr3388245oig.79.1573133605344; Thu, 07 Nov 2019 05:33:25 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Aleksandar Markovic Date: Thu, 7 Nov 2019 14:33:14 +0100 Message-ID: Subject: Re: Looking for issues/features for my first contribution To: Rajath Shashidhara Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::231 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "qemu-devel@nongnu.org" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Nov 7, 2019 at 11:37 AM Aleksandar Markovic wrote: > > > > On Thursday, November 7, 2019, Rajath Shashidhara = wrote: >> >> Hi all, >> >> I am a Computer Science graduate student at The University of Texas at A= ustin (UT, Austin). I am looking forward to contributing to qemu ! >> >> This semester, I am taking a class in Virtualization (https://github.com= /vijay03/cs378-f19) and contributing to a virtualization related open-sourc= e project is a significant part of the course. >> I would be interested in contributing a patchset to qemu - possibly a se= lf-contained feature or a reasonably complex bug fix that can be completed = in under a month's time. I did look at both the bugtracker and the QEMU Goo= gle Summer of Code 2019 page [https://wiki.qemu.org/Google_Summer_of_Code_2= 019] for ideas. However, I would be interested in hearing from the communit= y and I would be delighted if somebody can be suggest a suitable project ! >> > > Hello, Rajath! > > Thank you for expressing interest in QEMU open source project. > > There is certainly a place for you and your contributions in QEMU, and yo= u are very welcomed! > > It looks to me the following project would fit your description: > > 'Implement emulation of DS3231 real time clock in QEMU' > > Datasheet: > > https://datasheets.maximintegrated.com/en/ds/DS3231.pdf > > The steps needed to complete it (in my opinion): > > - collect datasheets of as many as possible RTC chips already emulated in= QEMU (there are around of dozen of them, see folder hw/rtc) > I did a quick Google search on datasheets of existing RTC implemtations, and the result is: DS1338: https://datasheets.maximintegrated.com/en/ds/DS1338-DS1338Z.pdf M41T80: https://www.st.com/resource/en/datasheet/m41t80.pdf M48T59: http://www.elektronikjk.pl/elementy_czynne/IC/M48T59V.pdf MC146818: https://www.nxp.com/docs/en/data-sheet/MC146818.pdf PL031: http://infocenter.arm.com/help/topic/com.arm.doc.ddi0224c/real_time_= clock_pl031_r1p3_technical_reference_manual_DDI0224C.pdf TWL92230: https://datasheet.octopart.com/TWL92230C-Texas-Instruments-datash= eet-150321.pdf Zynq RTC: https://www.xilinx.com/support/documentation/user_guides/ug1085-z= ynq-ultrascale-trm.pdf (chapter 7) Aleksandar > - do a comparative analysis of selected RTC implementations in QEMU > > - get to know general QEMU device model > > - design and implement DS3231 emulation > > I can give you (unfortunately constrained by tight time limits) some help= and guidance. But there are other people in community too (more knowledgab= le in the area than me). > > I salute your initiative! > > Yours, > Aleksandar > > > >> >> I am an advanced C programmer with both professional and academic backgr= ound in systems design & implementation - especially OS & Networks. Given m= y background, I feel fairly confident that I can pickup the QEMU codebase q= uickly. >> >> Eagerly looking forward to hearing from the community ! >> >> Thanks, >> Rajath Shashidhara >> >>