Ubuntu 12.04 hangs booting linaro linux kernel 3.3.1-37

U-Boot SPL 2011.12 (Apr 02 2012 - 18:10:22)
Texas Instruments Revision detection unimplemented
OMAP SD/MMC: 0
timed out in wait_for_bb: I2C_STAT=1000
reading u-boot.img
reading u-boot.bin
mkimage signature not found - ih_magic = ea000014
Assuming u-boot.bin ..
reading u-boot.bin


U-Boot 2011.12 (Apr 02 2012 - 18:10:22)

OMAP3630/3730-GP ES1.2, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C:   ready
DRAM:  512 MiB
WARNING: Caches not enabled
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment

In:    serial
Out:   serial
Err:   serial
Beagle xM Rev C
No EEPROM on expansion board
Die ID #506c00029ff800000168301016013005
Net:   No ethernet found.
checking for preEnv.txt
reading preEnv.txt

** Unable to read "preEnv.txt" from mmc 0:1 **
Hit any key to stop autoboot:  0
The user button is currently NOT pressed.
SD/MMC found on device 0
reading uEnv.txt

** Unable to read "uEnv.txt" from mmc 0:1 **
reading boot.scr

356 bytes read
Loaded script from boot.scr
Running bootscript from mmc0 ...
## Executing script at 80200000
reading uImage

4131016 bytes read
reading uInitrd

1941653 bytes read
## Booting kernel from Legacy Image at 80000000 ...
   Image Name:   Ubuntu Kernel
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4130952 Bytes = 3.9 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
## Loading init Ramdisk from Legacy Image at 81600000 ...
   Image Name:   Ubuntu Initrd
   Image Type:   ARM Linux RAMDisk Image (uncompressed)
   Data Size:    1941589 Bytes = 1.9 MiB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
<6>Booting Linux on physical CPU 0
<6>Initializing cgroup subsys cpuset
<5>Linux version 3.3.1-37-linaro-omap (buildd@cetan) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #37~ci~20120523002335~4fbc6df3-Ubuntu SMP PREEMPT Wed May 23 05: (Ubuntu 3.3.1-37.37~ci~20120523002335~4fbc6df3-linaro-om)
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=50c5387d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: OMAP3 Beagle Board
<6>Reserving 12582912 bytes SDRAM for VRAM
Memory policy: ECC disabled, Data cache writeback
<7>On node 0 totalpages: 127744
<7>free_area_init_node: node 0, pgdat 80731300, node_mem_map 80cad000
<7>  Normal zone: 1024 pages used for memmap
<7>  Normal zone: 0 pages reserved
<7>  Normal zone: 126720 pages, LIFO batch:31
<6>OMAP3630 ES1.2 (l2cache iva sgx neon isp 192mhz_clk )
<6>Clocking rate (Crystal/Core/MPU): 26.0/400/600 MHz
<6>PERCPU: Embedded 8 pages/cpu @810b5000 s11712 r8192 d12864 u32768
<7>pcpu-alloc: s11712 r8192 d12864 u32768 alloc=8*4096
<7>pcpu-alloc: [0] 0
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 126720
<5>Kernel command line: ro elevator=noop vram=12M omapfb.mode=dvi:1280x720MR-16@60 mpurate=auto root=UUID=b0643f6b-30a4-4197-b445-ff16f37a4e89 fixrtc quiet splash
<6>PID hash table entries: 2048 (order: 1, 8192 bytes)
<6>Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
<6>Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
<6>Memory: 499MB = 499MB total
<5>Memory: 491536k/491536k available, 32752k reserved, 0K highmem
<5>Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    vmalloc : 0xa0800000 - 0xff000000   (1512 MB)
    lowmem  : 0x80000000 - 0xa0000000   ( 512 MB)
    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)
    modules : 0x7f800000 - 0x7fe00000   (   6 MB)
      .text : 0x80008000 - 0x8063efe8   (6364 kB)
      .init : 0x8063f000 - 0x80698dc0   ( 360 kB)
      .data : 0x8069a000 - 0x80733a50   ( 615 kB)
       .bss : 0x80733a74 - 0x80cac730   (5604 kB)
<6>Preemptible hierarchical RCU implementation.
<6>NR_IRQS:474
<6>IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts
<6>Total of 96 interrupts on 1 active controller
<6>OMAP clockevent source: GPTIMER12 at 32768 Hz
<6>sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
<6>Console: colour dummy device 80x30
<6>console [tty0] enabled
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES:  8
... MAX_LOCK_DEPTH:          48
... MAX_LOCKDEP_KEYS:        8191
... CLASSHASH_SIZE:          4096
... MAX_LOCKDEP_ENTRIES:     16384
... MAX_LOCKDEP_CHAINS:      32768
... CHAINHASH_SIZE:          16384
 memory used by lock dependency info: 3695 kB
 per task-struct memory footprint: 1152 bytes
<6>Calibrating delay loop... <c>331.40 BogoMIPS (lpj=1296384)
<6>pid_max: default: 32768 minimum: 301
<6>Security Framework initialized
<6>AppArmor: AppArmor initialized
<6>Yama: becoming mindful.
<6>Mount-cache hash table entries: 512
<6>CPU: Testing write buffer coherency: ok
<6>ftrace: allocating 25943 entries in 51 pages
<6>CPU0: thread -1, cpu 0, socket -1, mpidr 0
<6>hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver, 5 counters available
<6>Setting up static identity map for 0x803faee0 - 0x803faf2c
<6>Brought up 1 CPUs
<6>SMP: Total of 1 processors activated (331.40 BogoMIPS).
<6>devtmpfs: initialized
<4>omap_hwmod: usbtll_fck: missing clockdomain for usbtll_fck.