From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rayagonda Kokatanur Date: Fri, 25 Sep 2020 21:47:19 +0530 Subject: Quick question? In-Reply-To: <63b3f47ef8c46f07d56d33ee57c78347@vivaldi.net> References: <63b3f47ef8c46f07d56d33ee57c78347@vivaldi.net> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Fri, Sep 25, 2020 at 9:29 PM jchludzinski wrote: > On 2020-09-25 07:13, Rayagonda Kokatanur wrote: > > On Fri, Sep 25, 2020, 4:32 PM jchludzinski > > wrote: > > > >> On 2020-09-24 17:36, jchludzinski wrote: > >>> I'm trying to bring up an RTOS (vxworks) using u-boot and have had > >>> some "partial" success: > >>> > >>> If I use the 2014 u-boot that comes with Quartus 18.1 (a tarball > >> in > >>> the download), vxworks successfully boots. > >>> > >>> If I clone the github repo > >>> (https://github.com/altera-opensource/u-boot-socfpga.git) and > >> build > >>> u-boot from that (2020), vxworks fails to boot. What appears to be > >>> happening is an (fpga?) watchdog timer goes off and a HW reset is > >>> called. Then of course, u-boot reboots. > >>> > >>> Any thoughts? Why would this occur with the newer u-boot and not > >> with > >>> the older u-boot? > >>> > >>> ---John > >> > >> I don't see the "Watchdog enabled" message in the output from the > >> older > >> u-boot. > > > > watchdog service starts by default in latest uboot and it's set to > > 60s. > > > > If you wait for more than 60s at uboot prompt or you os loading takes > > long time then watchdog resets. > > > > Define CONFIG_WATCHDOG , this will takes care of resting watchdog. > > > > Thanks, > > Rayagonda > > > >> > Thanks for the suggestion but this reset occurs while vxworks is in the > process of booting up. > > Could u-boot set a HW watchdog timer before handing control over to > vxworks and, while vxworks is booting, the timer goes off and calls > reset? > If wdt is not initialized by vxworks then I think uboot wdt will be running and it will reset. Did you try defining CONFIG_WATCHDOG in uboot ? Best regards, Rayagonda -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 4187 bytes Desc: S/MIME Cryptographic Signature URL: