I had been referencing that blog post, but it seemed too outdated to be very useful. I figured that just copying the u-boot command sequence and adjusting uEnv as necessary, it should just work.
I was finally able to get a successful boot using the am335x-boneblack.dtb file. I was using the am335x-evm.dtb previously. It looks like initrd works fine. And the zImage. On Tuesday, September 9, 2014 6:03:12 AM UTC-4, William Hermans wrote: > > Just glancing over your output there it seems perhaps your kernel is > expecting a few modules to be compiled into the kernel statically. > > On Tue, Sep 9, 2014 at 3:00 AM, William Hermans <[email protected] > <javascript:>> wrote: > >> >> http://www.embeddedhobbyist.com/debian-tips/beaglebone-black/beaglebone-black-usb-boot/ >> >> As far as I know this wont work with an initrd, but i could be >> remembering wrongly. Also, the example I give, was based on the idea that >> this was not possible with an zImage file. I believe this is no longer the >> case. >> >> On Tue, Sep 9, 2014 at 2:15 AM, Alexander Hayman <[email protected] >> <javascript:>> wrote: >> >>> I'm trying to boot from a USB flash drive. I essentially copy the >>> u-boot commands for booting from the SD card. I'm running into a problem >>> once the kernel has loaded: >>> >>> Begin: Mounting root file system ... Begin: Running /scripts/local-top >>> ... done. >>> Begin: Waiting for root file system ... done. >>> Gave up waiting for root device. Common problems: >>> - Boot args (cat /proc/cmdline) >>> - Check rootdelay= (did the system wait long enough?) >>> - Check root= (did the system wait for the right device?) >>> - Missing modules (cat /proc/modules; ls /dev) >>> ALERT! /dev/sda1 does not exist. Dropping to a shell! >>> modprobe: module i8042 not found in modules.dep >>> modprobe: module ehci-hcd not found in modules.dep >>> modprobe: module uhci-hcd not found in modules.dep >>> modprobe: module ohci-hcd not found in modules.dep >>> >>> I plugged in /dev/sda1 as a place holder, but I can't find any >>> indication that the initramfs was able to detect a USB flash drive. For >>> some reason it complains about ehci-hcd and ohci-hcd modules not being >>> found. The stock kernel is able to mount flash drives without any issues >>> using the builtin usb-storage and musb-hdrc modules. >>> >>> [ 1.617727] Initializing USB Mass Storage driver... >>> [ 1.625471] usbcore: registered new interface driver usb-storage >>> [ 1.634288] USB Mass Storage support registered. >>> [ 1.641729] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host) >>> >>> I'd really appreciate any advice on how to detect and mount the flash >>> drive. Do I need to make a modification to initrd? Or do I need to >>> rebuild the kernel with the ehci-hcd / ohci-hcd modules? Why isn't it >>> detecting the eMMC? >>> >>> -- >>> 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.
