From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 12 Oct 2020 18:43:08 +0200 From: Borislav Petkov Subject: Re: [PATCH] x86/x86_64_defconfig: Enable the serial console Message-ID: <20201012164308.GF22829@zn.tnic> References: <2538da14-0f4b-5d4a-c7bf-6fdb46ba2796@collabora.com> <20201011122020.GA15925@zn.tnic> <107a6fb0-a667-2f30-d1f4-640e3fee193a@collabora.com> <20201011155754.GC15925@zn.tnic> <1dfdf163-9b54-ceae-b178-c566e6109263@collabora.com> <20201012035846.GB11282@1wt.eu> <20201012143212.GC22829@zn.tnic> <20201012144040.GB11614@1wt.eu> MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Disposition: inline List-ID: To: Guillaume Tucker Cc: Willy Tarreau , Enric Balletbo i Serra , Randy Dunlap , linux-kernel@vger.kernel.org, x86@kernel.org, Collabora Kernel ML , Thomas Gleixner , Ingo Molnar , Diego Elio =?utf-8?Q?Petten=C3=B2?= , "H. Peter Anvin" , "Martin K. Petersen" , Nathan Chancellor , kernelci@groups.io On Mon, Oct 12, 2020 at 04:10:45PM +0100, Guillaume Tucker wrote: > You can get serial console on recent enough Chromebooks with a > debug interface such as SuzyQable: > > https://www.sparkfun.com/products/14746 > > It's not a USB Type-C adapter, it has a debug interface which > works with Chromebooks that support Case-Closed Debugging. > Anyone can do that without modifying the Chromebook, and with a > bit of patience to go through the documentation[1]... > > The KernelCI sample results from my previous email were run using > just that: off-the-shelf Chromebooks + SuzyQ + rebuilt firmware > for interactive console and tftp boot + kernel with the config > options in Enric's patch. That sounds interesting, thanks for elaborating. At the same time, you see how this setup is very hw-specific and not really common and those options do not really belong in a defconfig but in a kernelCI snippet, I'd say. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette