From: Dallas Clement <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Wednesday, July 23, 2014 at 3:35 PM To: "[email protected]" <[email protected]> Subject: Re: [beagleboard] Want to serial boot my BBB
> It looks like next step is to load u-boot.img, which works nicely. Thanks for > the clues everyone! > > This web-page is a very helpful guide for anyone else trying to boot from the > serial port: > http://processors.wiki.ti.com/index.php/Sitara_Linux_Training:_UBoot_Board_Por> t Looking at the wiki, I think the 06.00.00.00.00-template is probably stripped of most u-boot functionality (ethernet, mmc, etc) and is able to fit into SRAM and that is why MLO is not needed. Regards, John > > > > > On Wed, Jul 23, 2014 at 7:26 AM, Dallas Clement <[email protected]> > wrote: >> Hi Steve, It looks like the u-boot-spl.bin is working. This is what I'm >> seeing on my minicom console: >> >> Welcome to minicom 2.6.1 >> >> OPTIONS: I18n >> Compiled on Feb 11 2012, 18:12:55. >> Port /dev/ttyUSB0 >> >> Press CTRL-A Z for help on special keys >> >> ot SPL 2013.07-00012-g31df114 (Jul 11 2014 - 20:33:02) >> CCCCCCCCC >> >> Is the next step to send a MLO? >> >> >> On Tue, Jul 22, 2014 at 5:33 PM, Dallas Clement <[email protected]> >> wrote: >>> Thanks Steve. That was my understanding as well. I'll give that a shot. >>> >>> >>> On Tue, Jul 22, 2014 at 4:20 PM, Steve <[email protected]> wrote: >>>> For UART or USB you do not use the MLO file. When you build u-boot you >>>> should have a spl/u-boot-spl.bin file. This is what you send over x-modem. >>>> The MLO file is only used for Memory Booting (SD/Card, eMMC) while the >>>> u-boot-spl.bin file is used for Peripheral Booting (UART, USB). >>>> >>>> Steve K. >>>> >>>> >>>> On Tuesday, July 22, 2014 7:55:51 AM UTC-5, Dallas Clement wrote: >>>>> I was able to send the MLO file via minicom / x-modem just fine to the >>>>> board. However after the transfer completed, nothing happened. Should I >>>>> expect to see any output on the serial console afterward? >>>>> >>>>> >>>>> On Mon, Jul 21, 2014 at 10:14 AM, Dallas Clement <[email protected]> >>>>> wrote: >>>>>> Okay, thanks very much! I'll give that a try. >>>>>> >>>>>> >>>>>> On Mon, Jul 21, 2014 at 3:23 AM, liyaoshi <[email protected]> wrote: >>>>>>> Sorry , I have made a mistake . >>>>>>> >>>>>>> On omap3 board ,you should use pserial to download from serial >>>>>>> And on am335x / dm8148 board. x-modem is enough.and MLO is for boot from >>>>>>> serial >>>>>>> >>>>>>> So , please try to use teraterm , and upload from >>>>>>> file->transfer->xmodem->send. >>>>>>> Then power on the beaglebone board . >>>>>>> >>>>>>> >>>>>>> 2014-07-21 16:17 GMT+08:00 liyaoshi <[email protected]>: >>>>>>> >>>>>>> If I remember correctly , You should load x-loader.bin NOT MLO >>>>>>> While the different between MLO and x-loader.bin is MLO has 8 bytes head >>>>>>> , the first 4 bytes is dest and the second 4 bytes is length . >>>>>>> This is for boot from NAND /eMMC , and when download from serial . the >>>>>>> boot rom will download to fixed address and limit length . >>>>>>> >>>>>>> >>>>>>> >>>>>>> 2014-07-21 12:04 GMT+08:00 John Syn <[email protected]>: >>>>>>> >>>>>>> >>>>>>> From: Dallas Clement <[email protected]> >>>>>>> Reply-To: "[email protected]" <[email protected]> >>>>>>> >>>>>>> Date: Sunday, July 20, 2014 at 9:19 AM >>>>>>> To: "[email protected]" <[email protected]> >>>>>>> >>>>>>> Subject: Re: [beagleboard] Want to serial boot my BBB >>>>>>> >>>>>>> One other data point. If I don't press and hold the boot switch when >>>>>>> power is applied and instead wait a few seconds after applying power and >>>>>>> then press the boot switch, the pserial command is able to detect the >>>>>>> ASIC ID and download the x-loan.bin. >>>>>>> You should be loading MLO, not x-load.bin. I also haven¹t tried this >>>>>>> myself, but loading via serial shouldn¹t be any different from loading >>>>>>> from tftp. The load addresses should be identical. >>>>>>> >>>>>>> Regards, >>>>>>> John >>>>>>> >>>>>>> $ sudo ./pserial -p /dev/ttyUSB0 -f x-load.bin >>>>>>> Waiting For Device ASIC ID: Press Ctrl+C to stop >>>>>>> ASIC ID Detected: 0x85 0x74 0x61 0x90 >>>>>>> Sending 2ndFile: >>>>>>> Downloading file: 100.000% completed (10516/10516 bytes) >>>>>>> File download completed. >>>>>>> >>>>>>> However, the BBB boots from the eMMC instead of the x-loan.bin I >>>>>>> downloaded. So this is progress. It means that my pserial command does >>>>>>> work with a BBB and the BBB ROM code does respond with its ASIC ID and >>>>>>> does in fact download the x-load.bin. It looks like I just need to >>>>>>> figure out what the correct boot switch power on sequence is now. >>>>>>> >>>>>>> On Sunday, July 20, 2014 10:36:45 AM UTC-5, Dallas Clement wrote: >>>>>>> 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]> >>>>>>> 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_l >>>>>>> oading_files >>>>>>> <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]> >>>>>>> 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 >>>>>>> <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]. >>>>>>> For more options, visit https://groups.google.com/d/optout >>>>>>> <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 >>>>>>> <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 >>>>>>> <https://groups.google.com/d/optout> . >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>> --- >>>>>>> You received this message because you are subscribed to a topic in the >>>>>>> Google Groups "BeagleBoard" group. >>>>>>> To unsubscribe from this topic, visit >>>>>>> https://groups.google.com/d/topic/beagleboard/bsIWXc2pJJY/unsubscribe >>>>>>> <https://groups.google.com/d/topic/beagleboard/bsIWXc2pJJY/unsubscribe> >>>>>>> . >>>>>>> To unsubscribe from this group and all its topics, send an email to >>>>>>> [email protected]. >>>>>>> >>>>>>> For more options, visit https://groups.google.com/d/optout >>>>>>> <https://groups.google.com/d/optout> . >>>>>> >>>>> >>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to a topic in the >>>> Google Groups "BeagleBoard" group. >>>> To unsubscribe from this topic, visit >>>> https://groups.google.com/d/topic/beagleboard/bsIWXc2pJJY/unsubscribe. >>>> To unsubscribe from this group and all its topics, send an email to >>>> [email protected]. >>>> 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. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. 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