From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ioT8l-0005rW-Qx for barebox@lists.infradead.org; Mon, 06 Jan 2020 14:13:57 +0000 Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=[127.0.0.1]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1ioT8i-0004FP-T6 for barebox@lists.infradead.org; Mon, 06 Jan 2020 15:13:52 +0100 References: From: Ahmad Fatoum Message-ID: Date: Mon, 6 Jan 2020 15:13:52 +0100 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: Watchdog Timer with x86 processor To: barebox@lists.infradead.org On 1/6/20 2:47 PM, Rouven Czerwinski wrote: > Your list is interesntigly missing WATCHDOG_EFI, which can be used on > x86_64 machines. As described in the linked documentation, it's useless for monitoring Linux boot, because it's a boot service and these are terminated very early in the Linux boot process. Only usable x86 watchdog we have at the moment is the Fintek Super I/O watchdog. If you have another Super I/O, but your BIOS exports a WDAT ACPI table, barebox v2019.01.0 will come with ACPI driver support, so you could write an ACPI driver on top. Alternatively, you could turn on the watchdog in the BIOS and leave barebox out of it altogether. I've an iTCO patch series sitting on a local branch. I'll take a look and see if it's usable. Main problem is that the iTCO is accessible over PCI, but we have no EFI PCI support in barebox so far[1]. [1]: There's an incomplete patch series here: https://www.mail-archive.com/barebox@lists.infradead.org/msg33441.html Cheers Ahmad -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox