Thanks, and I wonder how i missed that page. I seem to have every other page bookmarked except that one . .
On Wed, Jan 8, 2014 at 6:43 PM, liyaoshi <[email protected]> wrote: > umm > > With serial download，I prefer to set the baudrate up to 921600 , if you > use a usb converter to uart . > > > > > 2014/1/9 Vaibhav Bedia <[email protected]> > >> On Wed, Jan 8, 2014 at 2:31 PM, William Hermans <[email protected]>wrote: >> >>> Any information you're willing to share as to how you load files via >>> serial would be awesome. Personally, I love reading about this sort of >>> thing . .. >>> >>> >> The steps are outlined here... >> >> http://processors.wiki.ti.com/index.php/AM335x_U-Boot_User's_Guide >> It's for the AM335x EVM but it should be easy enough to adapt it to any >> AM335x system. >> >> >> >>> On Wed, Jan 8, 2014 at 11:22 AM, <[email protected]> wrote: >>> >>>> Thanks, and I'd seen that article, but you're right--I'm doing >>>> something different. I have a BBB-based development board, and I'm writing >>>> a script that loads a full distribution onto it starting from a blank >>>> slate--i.e., nothing in the eMMC, no SD card. Most of it is working. >>>> >>>> I think Jack is right--it's a network driver issue. When I revert to >>>> the stock u-boot v2013.10, the tftp works better. >>>> >>>> On Wednesday, January 8, 2014 9:59:29 AM UTC-8, William Hermans wrote: >>>>> >>>>> http://www.embeddedhobbyist.com/debian-tips/beaglebone- >>>>> black/beaglebone-black-network-boot/ >>>>> >>>>> The above link is an article I wrote in the subject of network >>>>> booting. uboot, MLO, and uEnv.txt are on an SD card, but the kernel, and >>>>> device tree overlay is pulled in via TFTP, finally rootfs over NFS. >>>>> >>>>> This works fine, and might be a little slow, but nothing like what >>>>> you're explaining in your post. I am just using the standard package that >>>>> comes with Debian wheezy stable, and I have never experienced these >>>>> problems you're mentioning here. >>>>> >>>>> >>>>> >>>>> >>>>> On Wed, Jan 8, 2014 at 9:51 AM, Jack Mitchell < >>>>> [email protected]> wrote: >>>>> >>>>>> On 08/01/14 16:47, [email protected] wrote: >>>>>> > I have a setup that loads u-boot onto the BBB over the serial port, >>>>>> and >>>>>> > then tells u-boot to load the .dtb and kernel from a local TFTP >>>>>> server. >>>>>> > Loading the small .dtb file works perfectly (although slowly), and >>>>>> > succeeds. Loading the kernel takes too long, causes lots of >>>>>> retries, and >>>>>> > finally errors out. If I manually get the kernel from that same TFTP >>>>>> > server onto my laptop, it loads in about 11 seconds--over wifi--so >>>>>> the >>>>>> > server is working fine. It's just u-boot's TFTP client that seems >>>>>> to be >>>>>> > causing the errors. I have seen other messages around the net >>>>>> advising >>>>>> > changing the server's block size to 1468, which I did, and telling >>>>>> > u-boot to turn dcache off, which isn't an option anymore, but it >>>>>> still >>>>>> > fails. >>>>>> > >>>>>> > Has anyone actually got this working? Which tftp server are you >>>>>> using, >>>>>> > and what parameters? Is there a patch to u-boot that might fix its >>>>>> client? >>>>>> > >>>>>> > -- >>>>>> > 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/groups/opt_out. >>>>>> >>>>>> Which version of u-boot are you using? Could it not also be the >>>>>> ethernet >>>>>> drivers? I would try updating to the latest u-boot version and see if >>>>>> you're still having issues. >>>>>> >>>>>> Cheers, >>>>>> >>>>>> -- >>>>>> Jack Mitchell ([email protected]) >>>>>> Embedded Systems Engineer >>>>>> Cambridgeshire, UK >>>>>> http://www.embed.me.uk >>>>>> -- >>>>>> >>>>>> -- >>>>>> 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/groups/opt_out. >>>>>> >>>>> >>>>> -- >>>> 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/groups/opt_out. >>>> >>> >>> -- >>> 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/groups/opt_out. >>> >> >> -- >> 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/groups/opt_out. >> > > -- > 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/groups/opt_out. > -- 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/groups/opt_out.
