You could try forcing it to boot from emmc with an argument in your uEnv.txt, I believe it's mmcroot.
On Sunday, April 19, 2015 at 5:20:47 AM UTC-7, Paul Larson wrote: > > Yes, and the version of uboot that loads is the same if I boot with no SD, > or with the SD and don't press the s2 button. But something about the > default unit convoy causes it to bit the is image on the SD card even when > I do not hold down s2 during boot. > On Apr 19, 2015 12:18 AM, "sravan" <[email protected] <javascript:>> wrote: > >> Paul, >> If I'm not mistaken, emmc has priority over the sd card during normal >> boot. >> >> >> On Friday, April 17, 2015 at 3:03:17 PM UTC-7, Paul Larson wrote: >>> >>> I'm trying to do automated testing of some new images on BBB. The >>> current solution I'm looking at is to keep a stable image on the emmc >>> (default debian image at the moment, but I'm not *too* picky here), and use >>> it to flash the new image on the sd card, then trigger a reboot into the >>> new image. I cannot assume at any time that the new image I'm flashing to >>> the sd works well, or even boots at all, so I need a way to get back to the >>> image on the emmc. >>> >>> Fortunately, I've got pretty good access to network controllable relays >>> and power. So I can automate the process of powering off the device, >>> instrument the s2 button with a relay, and even check in uboot that s2 is >>> pressed and force booting to the sd card. The problem I'm having is that >>> for some reason, even when I boot without pressing s2, it winds up booting >>> the image that's on the sd card - I suspect maybe because it finds a >>> uEnv.txt there when searching the mmc? I've also noticed that I cannot >>> saveenv when I boot from the emmc and get into uboot there, but I can when >>> I boot with s2 held and boot into the uboot from my image on the sdcard. If >>> I set things in the environment and save them from there though, they don't >>> show up in printenv when I boot off the emmc. >>> >>> So that was a bit of a mouth full... if I were to distill it down to a >>> single question - is there a something I can do to the debian or ubuntu >>> image running off the emmc to ensure that when s2 is *not* pressed, it will >>> boot the image on the emmc regardless of what's on the sd card? >>> >>> Thanks, >>> Paul Larson >>> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/cB8skQGUOxE/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
