Pogov4 hangs at "Starting Kernel"

Hello all,

I've been following along with the great documentation here on the forums to hack a pogo-plug v4 and got to the very end only to be thwarted the boot sequence hanging at:

U-Boot 2016.05-tld-1 (Jun 12 2016 - 13:41:47 -0700)
Pogoplug V4
gcc (Debian 4.9.2-10) 4.9.2
GNU ld (GNU Binutils for Debian) 2.25
Hit any key to stop autoboot:  0 
starting USB...
USB0:   USB EHCI 1.00
scanning bus 0 for devices... 1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found

Reset IDE: ide_preinit failed

MMC rescan: current device # 0 initialized OK

no USB devices available

no IDE devices available

Partition Map for MMC device 0  --   Partition Type: DOS

Part	Start Sector	Num Sectors	UUID		Type
  1	8192      	31093648  	cf2a134d-01	0c
loading envs from mmc 0 ...
** File not found /boot/uEnv.txt **
running scan_disk ...
Scan device usb
device usb 0:1
** Bad device usb 0 **
device usb 1:1
** Bad device usb 1 **
device usb 2:1
** Bad device usb 2 **
device usb 3:1
** Bad device usb 3 **
Scan device ide

Reset IDE: ide_preinit failed
device ide 0:1
** Bad device size - ide 0 **
device ide 1:1
** Bad device size - ide 1 **
device ide 2:1
** Bad device ide 2 **
device ide 3:1
** Bad device ide 3 **
Scan device mmc

MMC rescan: current device # 0 initialized OK
device mmc 0:1
1 bytes read in 929 ms (0 Bytes/s)
Found bootable drive on mmc 0
loading uImage ...
3821592 bytes read in 1301 ms (2.8 MiB/s)
loading uInitrd ...
7245696 bytes read in 1471 ms (4.7 MiB/s)
loading DTB ...
** No boot file defined **
## Booting kernel from Legacy Image at 00800000 ...
   Image Name:   Linux-4.12.1-kirkwood-tld-1
   Created:      2017-07-20   8:11:24 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3821528 Bytes = 3.6 MiB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 01100000 ...
   Image Name:   initramfs-4.12.1-kirkwood-tld-1
   Created:      2017-07-24   0:18:23 UTC
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    7245632 Bytes = 6.9 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK


Starting kernel ...

Looking at this, I can tell that there is something that I am probably missing. I expect it to be a problem with the uEnv.txt (no idea where that is or what to do with it). I am trying to boot off of an sd card and It looks like I am finding it, but not sure why it would be hanging at "starting kernel..."

Here is the printenv output from the u-boot init prompt if it helps:

Pogov4> printenv
printenv
arcNumber=3960
bootcmd=run bootcmd_uenv; run scan_disk; run set_bootargs; run bootcmd_exec
bootcmd_exec=run load_uimage; if run load_initrd; then if run load_dtb; then bootm $load_uimage_addr $load_initrd_addr $load_dtb_addr; else bootm $load_uimage_addr $load_initrd_addr; fi; else if run load_dtb; then bootm $load_uimage_addr - $load_dtb_addr; else bootm $load_uimage_addr; fi; fi
bootcmd_uenv=run uenv_load; if test $uenv_loaded -eq 1; then run uenv_import; fi
bootdelay=10
bootdev=usb
device=0:1
devices=usb ide mmc
disks=0 1 2 3
ethact=egiga0
ethaddr=52:3b:20:9c:11:51
if_netconsole=ping $serverip
ipaddr=192.168.1.191
led_error=orange blinking
led_exit=green off
led_init=green blinking
load_dtb=echo loading DTB $dtb_file ...; load $bootdev $device $load_dtb_addr $dtb_file
load_dtb_addr=0x1c00000
load_initrd=echo loading uInitrd ...; load $bootdev $device $load_initrd_addr /boot/uInitrd
load_initrd_addr=0x1100000
load_uimage=echo loading uImage ...; load $bootdev $device $load_uimage_addr /boot/uImage
load_uimage_addr=0x800000
machid=f78
mainlineLinux=yes
mtdids=nand0=orion_nand
mtdparts=orion_nand:1M(u-boot),4M(uImage),32M(rootfs),-(data)
ncip=192.168.1.10
partition=nand0,2
preboot=run if_netconsole start_netconsole
preboot_nc=run if_netconsole start_netconsole
scan_disk=echo running scan_disk ...; scan_done=0; setenv scan_usb "usb start";  setenv scan_ide "ide reset";  setenv scan_mmc "mmc rescan"; for dev in $devices; do if test $scan_done -eq 0; then echo Scan device $dev; run scan_$dev; for disknum in $disks; do if test $scan_done -eq 0; then echo device $dev $disknum:1; if load $dev $disknum:1 $load_uimage_addr /boot/uImage 1; then scan_done=1; echo Found bootable drive on $dev $disknum; setenv device $disknum:1; setenv bootdev $dev; fi; fi; done; fi; done
serverip=192.168.1.10
set_bootargs=setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 $mtdparts $custom_params
start_netconsole=setenv ncip $serverip; setenv bootdelay 10; setenv stdin nc; setenv stdout nc; setenv stderr nc; version;
stderr=nc
stdin=nc
stdout=nc
uenv_addr=0x810000
uenv_import=echo importing envs ...; env import -t $uenv_addr $filesize
uenv_init_devices=setenv init_usb "usb start";  setenv init_ide "ide reset";  setenv init_mmc "mmc rescan"; for devtype in $devices; do run init_$devtype; done;
uenv_load=run uenv_init_devices; setenv uenv_loaded 0; for devtype in $devices;  do for disknum in 0; do run uenv_read_disk; done; done;
uenv_read=echo loading envs from $devtype $disknum ...; if load $devtype $disknum:1 $uenv_addr /boot/uEnv.txt; then setenv uenv_loaded 1; fi
uenv_read_disk=if test $devtype -eq mmc; then if $devtype part; then run uenv_read;  fi; else if $devtype part $disknum; then run uenv_read; fi;  fi
usb_ready_retry=15

Environment size: 2858/131068 bytes

I've followed along with the instructions for the u-boot from the post "2016.05 U-Boot Kirkwood <devices>" and for the Debian rootfs from the post "Linux Kernel 4.12.1 Kirkwood package and Debian rootfs." I haven't done anything with the kernel because I assumed those were instructions for upgrading the kernel in the Debian image (please correct me here).

I am a complete novice when it comes to these things so please let me know if there is any more info that you need or if there is something that I am missing completely.

Thanks in advance for the help!

bburnett,

You did not set the env for DTB file, so it was not loaded:

loading DTB ...
** No boot file defined **

Interrupt serial console and

setenv dtb_file '/boot/dts/kirkwood-pogoplug_v4.dtb'

and then

boot

Once it booted into Debian, and after you can log in. Set it permanently at command line:

fw_setenv dtb_file '/boot/dts/kirkwood-pogoplug_v4.dtb'

-bodhi
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Forum Wiki
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Thank you Bodhi that did the trick! Glad it was something simple.

Take care and thanks for the excellent resources!

bburnett Wrote:
-------------------------------------------------------
> Thank you Bodhi that did the trick! Glad it was so
> mething simple.
>
> Take care and thanks for the excellent resources!

Great!

-bodhi
===========================
Forum Wiki
bodhi's corner (buy bodhi a beer)