On Tue, Nov 17, 2020 at 4:29 PM Georg Gast <schorsch76...@gmail.com> wrote: > > Hi everyone, > i have an old Beaglebone Black (short after it was released) and now i got a > new BBAI. The BBB i could run with a mainline kernel and mainline u-boot and > a stock Debian/armhf. > > I build u-boot from source and rest was qemu-debootstraped. > > For other SBC's like the Pi4 there is a description how exactly the > bootprocess works. Also the BBB got a description how to setup the SD card to > boot it. > > My first try was to setup the SD card as i did with the BBB but it didn't > work out. When i flash the Flasher Image i can restore my MMC and it works > again. Even if i copy the content of the original MMC to the SD card it works. > > I got a TTL UART adapter and i can see u-boot and work with it on the stock > images. My interest is in understanding the boot sequences of these SBCs and > run them most of the time with Debian and upstream sources. > > Could you point me to a description of the boot sequence? The offical system > manual is still on TODO in these areas.
For pure mainline/debian, just setup extlinux.. U-Boot will load that file and do the generic bootup, just make sure to disable quiet /boot/extlinux/extlinux.conf TI nuked all am57xx pinmuxing in the mainline kernel, so all pinmux values need to be setup in u-boot, i'm not sure if that's 100% yet.. (aka i don't think eMMC was working) Regards, -- Robert Nelson https://rcn-ee.com/ -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYg_cxUPui1yZh%3DR48O%2BfxMxTx2sduEZZZbx_Pfkhm4M5w%40mail.gmail.com.
