Oh and right ! How would this effect loading a rootfs over a NFS share ? On Wed, Dec 31, 2014 at 6:48 PM, William Hermans <yyrk...@gmail.com> wrote:
> Robert, so this would work in a pinch to modify files on the system in a > pinch to get a working system back after a bad modification ? > > Pretty nifty either way I think. > > So what about a possible g_multi, or even just g_serial for observing > kernel log on boot ? Maybe even some late u-boot messages, so perhaps a > serial debug cable would not be needed to troubleshoot some issues ? Just a > thought . . . > > On Wed, Dec 31, 2014 at 6:28 AM, Chris Morgan <chmor...@gmail.com> wrote: > >> On Tue, Dec 30, 2014 at 9:45 PM, Robert Nelson <robertcnel...@gmail.com> >> wrote: >> > On the advice of Tom Rini, >> > >> > I'm making 'another' small change to the default u-boot. >> > >> > For awhile now, in u-boot we defaulted to a usb-eth gadget on the slave >> port. >> > >> > I'm switching that to the UMS or USB Mass Storage function.. >> > >> > What this means: >> > >> > From u-boot prompt: >> > >> > Hit any key to stop autoboot: 0 >> > U-Boot# ums 0 mmc 1 >> > UMS: disk start sector: 0x0, count: 0x394000 >> > >> > a new flash drive will show up on your linux/win machine... >> > >> > and you can flash the eMMC over the usb connection: >> > >> > voodoo@zeus:/opt/images/bb.org$ time sudo dd >> > if=./bone-debian-7.7-console-armhf-2014-12-19-2gb.img of=/dev/sdc >> > [sudo] password for voodoo: >> > 3481600+0 records in >> > 3481600+0 records out >> > 1782579200 bytes (1.8 GB) copied, 3814.3 s, 467 kB/s >> > >> > real 63m36.405s >> > user 0m4.488s >> > sys 0m50.800s >> > >> > It is 10x slow, but on reset: >> > >> > >> > ********************************************************************** >> > U-Boot SPL 2015.01-rc3-00015-g84a5d7d (Dec 12 2014 - 16:04:56) >> > >> > U-Boot 2015.01-rc3-00015-g84a5d7d (Dec 12 2014 - 16:04:56), Build: >> > jenkins-github_Bootloader-Builder-79 >> > >> > Watchdog enabled >> > I2C: ready >> > DRAM: 512 MiB >> > MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 >> > Using default environment >> > >> > Net: <ethaddr> not set. Validating first E-fuse MAC >> > cpsw, usb_ether >> > ********************************************************************** >> > >> > That's pretty cool. ;) And should be useful for users with no >> > secondary microSD cards'... >> > >> > Regards, >> > >> > -- >> > Robert Nelson >> > http://www.rcn-ee.com/ >> > >> > -- >> > 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 beagleboard+unsubscr...@googlegroups.com. >> > For more options, visit https://groups.google.com/d/optout. >> >> >> >> That is pretty cool. >> >> Ouch on the transfer time: >> >> > real 63m36.405s >> >> >> Chris >> >> -- >> 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 beagleboard+unsubscr...@googlegroups.com. >> 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
