Hi William. Thanks for the help. I'm stuck much earlier on than u-boot. I am expecting the ROM to return the ASIC ID when I run the pserial command to try and load the first stage boot loader (x-load.bin). I'm not even able to get past that. It looks like either I have the wrong pserial command or maybe the BBB ROM does not provide an ASIC ID. I don't know enough about the Sitara processor to say. If I can get the x-loader to work, I think I am home free because it should be able to load a u-boot.bin.
On Sunday, July 20, 2014 10:18:50 AM UTC-5, William Hermans wrote: > > Ok after reading the second link fully, I noticed a few things. > > First, the boot file is different. We have zImage typically, so I would > assume the bootz command would be necessary. *OR* you could convert a > zImage to uImage. > > Secondly, the base load address is different, so this would need to be > taken into account. Although I think changing this would be fairly simple. > > Lastly, we also need to load the device tree board file, and I am a bit > confused about this for loading serially. > > > > > On Sun, Jul 20, 2014 at 7:59 AM, William Hermans <[email protected] > <javascript:>> wrote: > >> uboot is supposed to handle serial booting. However, I have no personal >> hands on. Just a quick google search showed many results however. One thing >> to note is that uboot for the BBB is patched, so possibly different. It >> does not however make sense for this feature to be patched out, so I would >> assume that it should work. >> >> Sorry for the less than definitive answer, perhaps someone with hands on >> will respond. You can however experiment on your own. >> >> >> http://blackfin.uclinux.org/doku.php?id=bootloaders:u-boot:serial_port_loading_files >> http://blog.mezeske.com/?p=483 >> >> $ apt-cache search ckermit >> ckermit - serial and network communications package >> >> Second link package mentioned is available, so looks to be possible. >> >> >> On Sun, Jul 20, 2014 at 7:44 AM, Dallas Clement <[email protected] >> <javascript:>> wrote: >> >>> Hi, >>> >>> I am trying to boot my BBB over a serial connection, and need a little >>> help. I have followed the instructions for UART recovery listed here >>> http://elinux.org/BeagleBoardRecovery >>> >>> I built the pserial tool and an x-loan.bin, but when I try to load it, I >>> just getting hanging. >>> >>> $ sudo ./pserial -p /dev/ttyUSB0 -f x-load.bin >>> Waiting For Device ASIC ID: Press Ctrl+C to stop >>> >>> I am using a 6 pin TTL to USB cable to my PC. >>> >>> Perhaps the x-load.bin I am using is for the wrong processor >>> (BeagleBoard)? If so, maybe I can convert the MLO produced by the BBB >>> u-boot build to a x-load.bin. Just need a few pointers on how to do that. >>> >>> Thanks, >>> >>> Dallas >>> >>> >>> -- >>> 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] <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.
