On 1/24/2019 1:10 AM, Dave wrote: > The BBB Clone board I am trying to get working has had sufficient work that > it is now trying to load Linux. > > I have u-boot patched to use UART4 as the console. I have tried to make > changes to pass UART4 to linux as the console, without success. > > I still get > > debug: [console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 > root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M > net.ifnames=0] ... > > from uboot on UART4 just before starting the kernel when I lose output > > Where is the console getting set to ttyO0 ?
Probably the U-Boot default environment. Hit a key at the U-Boot "countdown" prompt and dump the environment: > printenv You can follow along from the "boot" entry until you get to the point where the kernel command line is being set. Edit that entry (editenv) to use UART4 and then boot from the prompt. Depending on your U-Boot, the default environment may be compiled in, stored raw on the uSD, or in something like the uEnv.txt file. -- Charles Steinkuehler [email protected] -- 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/e500a060-539b-c968-b919-1808cbbbd24d%40steinkuehler.net. For more options, visit https://groups.google.com/d/optout.
