Well, Dave, you might have to consult the experts who know a whole lot more about the low level details of how the BBB boots, but I think you need to understand the following:
1.) UART0 is not required for the BBB to boot, but when the BBB does not boot, UART0 is the place that has the information about why it is not booting. So not a good idea to try to bring up a new piece of hardware without access to the debug port. 2.) You might note that the same software distribution runs on five or six very different pieces of hardware. Multiple variants of the BeagleBone and PocketBeagle with different hardware sets and capabilities. The information that UBoot and probably the kernel, too, needs to figure out what they are dealing with, is in the EEPROM. So, if you are not going to provide that information, you are in for some rewriting and recompiling of probably both uBoot and maybe the kernel, so you can hard code the information somewhere that they expected to get from the EEPROM. It is not as simple as providing a new device tree. --- Graham == On Saturday, January 12, 2019 at 7:32:53 PM UTC-6, Dave wrote: > > I am working to bring up a BBB "clone". > > There are two significant differences that are/may be causing problems. > > 1). UART0 is not accessible. > 2). The device does not have the BeagleBoard 32K I2C eeprom. > > Anyone have pointers for building a U-Boot that Uses any other UART > besides 0 ? > > Is U-Boot going to have an issue because of the missing eeprom ? > Linux ? > > > Do I just need to change uEnv.txt to force a specific device tree ? > > Thank you > > > > > > -- 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/b8598e22-1db9-47e4-b906-66ba59ec3ffa%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
