Hi all

Please help me.
I tried to use Ubuntu-14.04.1-console-armhf-2015-01-06 demo image on 
BeagleBoard-xM.
However boot stop on the way.
Boot messages are as follows.
What should I do ?


U-Boot SPL 2015.01-00011-g2efed9f (Jan 12 2015 - 17:15:10)
SPL: Please implement spl_start_uboot() for your board
SPL: Direct Linux boot not active!
reading u-boot.img
reading u-boot.img


U-Boot 2015.01-00011-g2efed9f (Jan 12 2015 - 17:15:10), Build: 
jenkins-github_Bootloader-Builder-90

OMAP3630/3730-GP ES1.2, CPU-OPP2, L3-200MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C:   ready
DRAM:  512 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment

Beagle xM Rev C
No EEPROM on expansion board
No EEPROM on expansion board
Die ID #686800029ff80000015f26ad0f007010
Net:   usb_ether
Error: usb_ether address not set.

Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
Checking for: /uEnv.txt ...
Checking for: /boot/uEnv.txt ...
160 bytes read in 44 ms (2.9 KiB/s)
Loaded environment from /boot/uEnv.txt
Checking if uname_r is set in /boot/uEnv.txt...
Running uname_boot ...
loading /boot/vmlinuz-3.18.1-armv7-x2 ...
5069696 bytes read in 351 ms (13.8 MiB/s)
loading /boot/dtbs/3.18.1-armv7-x2/omap3-beagle-xm.dtb ...
62562 bytes read in 113 ms (540 KiB/s)
loading /boot/initrd.img-3.18.1-armv7-x2 ...
3984943 bytes read in 286 ms (13.3 MiB/s)
debug: [console=ttyO2,115200n8 
root=UUID=76d3f557-1b80-4d5b-ad37-8986b0d7b425 ro rootfstype=ext4 rootwait 
fixrtc quiet] ...
debug: [bootz 0x82000000 0x88080000:3cce2f 0x88000000] ...
Kernel image @ 0x82000000 [ 0x000000 - 0x4d5b80 ]
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   Loading Ramdisk to 8fc33000, end 8ffffe2f ... OK
   Using Device Tree in place at 88000000, end 88012461

Starting kernel ...

[    0.814941] omap_l3_smx omap_l3_smx.0: couldn't request debug irq
[    0.848785] platform 48058000.ssi-controller: Cannot lookup hwmod 'ssi'
[    2.880187] Error: Driver 'tfp410' is already registered, aborting...
[    2.985260] ehci-omap 48064800.ehci: Can't get PHY device for port 1: 
-517
[    3.084197] omap2_set_init_voltage: unable to find boot up OPP for 
vdd_mpu_iva
[    3.091796] omap2_set_init_voltage: unable to set vdd_mpu_iva
[    3.098968] omap2_set_init_voltage: unable to find boot up OPP for 
vdd_core
[    3.106323] omap2_set_init_voltage: unable to set vdd_core
[    5.112609] mmc0: card never left busy state
[    5.117095] mmc0: error -110 whilst initialising SD card
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/disk/by-uuid/76d3f557-1b80-4d5b-ad37-8986b0d7b425 does not 
exist.  Dropping to a shell!

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