> > *Made all of the changes and got a clean build for the MLO and u-boot.img > (thanks!!!). What is the best way to flash the eMMC? I figure it is to > modify an image of my existing eMMC and use your script to flash the SD to > the eMMC. That being the case - where is the u-boot.img file? I poked > around the .img file and haven't been able to find anythign in the /boot > directory. Thanks again!* > > *Ed* >
Here if you look closely, you'll see the bootloaders are in the first 1M of disk space, or MBR if you will. https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-SetupmicroSDcard On Wed, Apr 27, 2016 at 11:29 AM, Edwin Maynard <[email protected]> wrote: > Made all of the changes and got a clean build for the MLO and u-boot.img > (thanks!!!). What is the best way to flash the eMMC? I figure it is to > modify an image of my existing eMMC and use your script to flash the SD to > the eMMC. That being the case - where is the u-boot.img file? I poked > around the .img file and haven't been able to find anythign in the /boot > directory. Thanks again! > > Ed > > On Wednesday, April 27, 2016 at 9:52:30 AM UTC-6, Edwin Maynard wrote: >> >> Hello - >> >> I am a bit of a newbie when it comes to Linux and modifying uBoot is >> something that is very new to me. I remember with the Rev B boards that you >> needed to hold the S2 switch in order to boot from the SD card. This was >> "fixed" by the time the Rev C hardware came out - I assume by patching >> uBoot. Anyway, the current behavior (Debian Wheezy) when there is both a >> valid eMMC image and valid SD image is to boot off the SD card regardless >> of the state of the S2 switch. I get that this is because the uBoot on the >> eMMC and the SD card are the same and both defaul to booting the SD card if >> it is there. >> >> I'd like to get the old behavior back so that the S2 switch forces a boot >> from the SD card and the eMMC will ignore the SD card for the purpose of >> finding the boot image. >> >> The reason for this is that I am making a deeply embedded system and want >> to be able to update the eMMC by booting from SD card using the scripts >> provided (set the cmdline in uEnv.txt to make it a flasher) and I won;t >> have physical access to the uSD slot. >> >> Alternatively, and here is where I am a rank newbie, is there a way >> (script) that I can boot into the eMMC (no boot image on the SD card) and >> trigger a reflash of the eMMC? >> >> Thanks in advance, >> Ed >> > -- > 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]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/57cb8fac-f7e5-4336-8941-932697d2fa08%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/57cb8fac-f7e5-4336-8941-932697d2fa08%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORpx-FdxwUwKQhqpHoeuYYp7jy0jKQ7_ZY6oFxzc8HvidQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
