是什么原因呢？
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Linux version 3.2.0 (root@ubuntu) (gcc version 4.4.3 (GCC) ) #1 Fri Oct 30 155
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: am335xevm
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] AM335X ES2.0 (sgx neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
[ 0.000000] Kernel command line: console=ttyO0,115200n8 androidboot.console=ttyO0 mem=256f
[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Memory: 256MB = 256MB total
[ 0.000000] Memory: 250160k/250160k available, 11984k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0763000 (7532 kB)
[ 0.000000] .init : 0xc0763000 - 0xc07ba000 ( 348 kB)
[ 0.000000] .data : 0xc07ba000 - 0xc0822130 ( 417 kB)
[ 0.000000] .bss : 0xc0822154 - 0xc0977dd8 (1368 kB)
[ 0.000000] NR_IRQS:396
[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
[ 0.000000] Total of 128 interrupts on 1 active controller
[ 0.000000] OMAP clockevent source: GPTIMER2 at 24000000 Hz
[ 0.000000] OMAP clocksource: GPTIMER1 at 32768 Hz
[ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
[ 0.000000] Console: colour dummy device 80x30
[ 0.000152] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736)
[ 0.088836] pid_max: default: 32768 minimum: 301
[ 0.088958] Security Framework initialized
[ 0.089019] Mount-cache hash table entries: 512
[ 0.089385] CPU: Testing write buffer coherency: ok
[ 0.089447] ftrace: allocating 21699 entries in 64 pages
[ 0.145721] omap_hwmod: pruss: failed to hardreset
[ 0.146453] print_constraints: dummy:
[ 0.146636] NET: Registered protocol family 16
[ 0.147583] OMAP GPIO hardware version 0.1
[ 0.148498] omap_mux_init: Add partition: #1: core, flags: 0
[ 0.149566] omap_i2c.1: alias fck already exists
[ 0.150024] omap2_mcspi.1: alias fck already exists
[ 0.150115] omap2_mcspi.2: alias fck already exists
[ 0.150238] edma.0: alias fck already exists
[ 0.150238] edma.0: alias fck already exists
[ 0.150268] edma.0: alias fck already exists
[ 0.158142] bio: create slab <bio-0> at 0
[ 0.159149] SCSI subsystem initialized
[ 0.159881] usbcore: registered new interface driver usbfs
[ 0.159973] usbcore: registered new interface driver hub
[ 0.160095] usbcore: registered new device driver usb
[ 0.160217] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
[ 0.160369] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
[ 0.160736] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[ 0.161834] tps65910 1-002d: JTAGREVNUM 0x0
[ 0.163970] print_constraints: VRTC:
[ 0.165283] print_constraints: VIO: at 1500 mV
[ 0.167449] print_constraints: VDD1: 600 <--> 1500 mV at 1325 mV normal
[ 0.169616] print_constraints: VDD2: 600 <--> 1500 mV at 1137 mV normal
[ 0.170471] print_constraints: VDD3: 5000 mV
[ 0.171752] print_constraints: VDIG1: at 1800 mV
[ 0.173034] print_constraints: VDIG2: at 1800 mV
[ 0.174316] print_constraints: VPLL: at 1800 mV
[ 0.175598] print_constraints: VDAC: at 1800 mV
[ 0.176879] print_constraints: VAUX1: at 1800 mV
[ 0.178192] print_constraints: VAUX2: at 3300 mV
[ 0.179473] print_constraints: VAUX33: at 3300 mV
[ 0.180755] print_constraints: VMMC: at 3300 mV
[ 0.180999] tps65910 1-002d: No interrupt support, no core IRQ
[ 0.181304] Advanced Linux Sound Architecture Driver Version 1.0.24.
[ 0.181793] Bluetooth: Core ver 2.16
[ 0.181854] NET: Registered protocol family 31
[ 0.181884] Bluetooth: HCI device and connection manager initialized
[ 0.181884] Bluetooth: HCI socket layer initialized
[ 0.181884] Bluetooth: L2CAP socket layer initialized
[ 0.181945] Bluetooth: SCO socket layer initialized
[ 0.182098] Switching to clocksource gp timer
[ 0.197448] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[ 0.197631] musb-hdrc musb-hdrc.0: dma type: pio
[ 0.197814] MUSB0 controller's USBSS revision = 4ea20800
[ 0.198181] musb-hdrc musb-hdrc.0: USB OTG mode controller at d083c000 using PIO, IRQ 18
[ 0.198455] musb-hdrc musb-hdrc.1: dma type: pio
[ 0.198577] MUSB1 controller's USBSS revision = 4ea20800
[ 0.198669] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
[ 0.198760] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
[ 0.198883] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.198883] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.198913] usb usb1: Product: MUSB HDRC host driver
[ 0.198913] usb usb1: Manufacturer: Linux 3.2.0 musb-hcd
[ 0.198913] usb usb1: SerialNumber: musb-hdrc.1
[ 0.199310] hub 1-0:1.0: USB hub found
[ 0.199340] hub 1-0:1.0: 1 port detected
[ 0.199676] musb-hdrc musb-hdrc.1: USB Host mode controller at d083e800 using PIO, IRQ 19
[ 0.200012] NET: Registered protocol family 2
[ 0.200195] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.200531] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.200653] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.200714] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.200714] TCP reno registered
[ 0.200744] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.200744] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.200927] NET: Registered protocol family 1
[ 0.201202] RPC: Registered named UNIX socket transport module.
[ 0.201202] RPC: Registered udp transport module.
[ 0.201202] RPC: Registered tcp transport module.
[ 0.201232] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.201416] NetWinder Floating Point Emulator V0.97 (double precision)
[ 0.289642] ashmem: initialized
[ 0.289886] VFS: Disk quotas dquot_6.5.2
[ 0.289947] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.290679] fuse init (API version 7.17)
[ 0.290893] msgmni has been set to 488
[ 0.291778] io scheduler noop registered
[ 0.291809] io scheduler deadline registered
[ 0.291870] io scheduler cfq registered (default)
[ 0.292449] Could not set LED4 to fully on
[ 0.313110] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[ 0.975067] console [ttyO0] enabled
[ 0.979156] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[ 0.986816] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[ 0.994476] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[ 1.002075] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[ 1.009704] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[ 1.021972] brd: module loaded
[ 1.027648] loop: module loaded
[ 1.031097] i2c-core: driver [tsl2550] using legacy suspend method
[ 1.037597] i2c-core: driver [tsl2550] using legacy resume method
[ 1.044036] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.122680] No daughter card found on AM335x EVM
[ 1.127563] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.212707] AM335X: EVM Config read fail: -110
[ 1.217559] NFC Driver for TI WiLink
[ 1.221862] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.228942] omap2-nand driver initializing
[ 1.233276] OneNAND driver initializing
[ 1.237701] CAN device driver interface
[ 1.241699] CAN bus driver for Bosch D_CAN controller 1.0
[ 1.247528] PPP generic driver version 2.4.2
[ 1.252136] PPP BSD Compression module registered
[ 1.257080] PPP Deflate Compression module registered
[ 1.262481] usbcore: registered new interface driver cdc_ether
[ 1.268646] usbcore: registered new interface driver cdc_eem
[ 1.274597] usbcore: registered new interface driver dm9601
[ 1.280456] usbcore: registered new interface driver cdc_subset
[ 1.286712] cdc_ncm: 04-Aug-2011
[ 1.290130] usbcore: registered new interface driver cdc_ncm
[ 1.296112] usbcore: registered new interface driver cdc_acm
[ 1.302032] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 1.310394] Initializing USB Mass Storage driver...
[ 1.315612] usbcore: registered new interface driver usb-storage
[ 1.321868] USB Mass Storage support registered.
[ 1.326843] usbcore: registered new interface driver usbserial
[ 1.333007] USB Serial support registered for generic
[ 1.338348] usb 1-1: new high-speed USB device number 2 using musb-hdrc
[ 1.482879] usb 1-1: New USB device found, idVendor=0424, idProduct=2512
[ 1.489898] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.497863] hub 1-1:1.0: USB hub found
[ 1.501892] hub 1-1:1.0: 2 ports detected
[ 1.506713] usbcore: registered new interface driver usbserial_generic
[ 1.513549] usbserial: USB Serial Driver core
[ 1.518157] USB Serial support registered for GSM modem (1-port)
[ 1.524597] usbcore: registered new interface driver option
[ 1.530426] option: v0.7.2:USB Driver for GSM modems
[ 1.537170] gadget: Mass Storage Function, version: 2009/09/11
[ 1.543426] gadget: Number of LUNs=1
[ 1.547241] lun0: LUN: removable file: (no medium)
[ 1.552520] gadget: android_usb ready
[ 1.556488] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
[ 1.562072] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
[ 1.569885] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.576995] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.584564] usb usb2: Product: MUSB HDRC host driver
[ 1.589752] usb usb2: Manufacturer: Linux 3.2.0 musb-hcd
[ 1.595306] usb usb2: SerialNumber: musb-hdrc.0
[ 1.600402] hub 2-0:1.0: USB hub found
[ 1.604370] hub 2-0:1.0: 1 port detected
[ 1.608917] mousedev: PS/2 mouse device common for all mice
[ 1.615844] using rtc device, omap_rtc, for alarms
[ 1.620727] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[ 1.627624] omap_rtc: already running
[ 1.631469] i2c /dev entries driver
[ 1.635314] Linux video capture interface: v2.00
[ 1.640380] usbcore: registered new interface driver uvcvideo
[ 1.646392] USB Video Class driver (1.1.1)
[ 1.683441] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 1.689941] device-mapper: uevent: version 1.0.3
[ 1.694946] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: dm-devel@redhat.m
[ 1.703796] Bluetooth: HCI UART driver ver 2.2
[ 1.708435] Bluetooth: HCI H4 protocol initialized
[ 1.713439] Bluetooth: HCILL protocol initialized
[ 1.718353] Bluetooth: Bluetooth Driver for TI WiLink - Version 1.0
[ 1.729217] cpuidle: using governor ladder
[ 1.733673] cpuidle: using governor menu
[ 1.738159] usbcore: registered new interface driver usbhid
[ 1.743988] usbhid: USB HID core driver
[ 1.748474] logger: created 256K log 'log_main'
[ 1.753356] logger: created 256K log 'log_events'
[ 1.758361] logger: created 256K log 'log_radio'
[ 1.763305] logger: created 256K log 'log_system'
[ 1.768737] usbcore: registered new interface driver snd-usb-audio
[ 1.776062] ALSA device list:
[ 1.779144] No soundcards found.
[ 1.782714] oprofile: hardware counters not available
[ 1.787994] oprofile: using timer interrupt.
[ 1.792602] Netfilter messages via NETLINK v0.30.
[ 1.797668] nf_conntrack version 0.5.0 (3908 buckets, 15632 max)
[ 1.804290] ctnetlink v0.93: registering with nfnetlink.
[ 1.809906] NF_TPROXY: Transparent proxy support initialized, version 4.1.0
[ 1.817199] NF_TPROXY: Copyright (c) 2006-2007 BalaBit IT Ltd.
[ 1.823669] xt_time: kernel timezone is -0000
[ 1.828430] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1.834228] arp_tables: (C) 2002 David S. Miller
[ 1.839111] TCP cubic registered
[ 1.842651] NET: Registered protocol family 10
[ 1.848175] Mobile IPv6
[ 1.850769] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 1.856658] IPv6 over IPv4 tunneling driver
[ 1.861694] NET: Registered protocol family 17
[ 1.866394] NET: Registered protocol family 15
[ 1.871032] can: controller area network core (rev 20090105 abi 8)
[ 1.877624] NET: Registered protocol family 29
[ 1.882263] can: raw protocol (rev 20090105)
[ 1.886718] can: broadcast manager protocol (rev 20090105 t)
[ 1.892883] Bluetooth: RFCOMM TTY layer initialized
[ 1.897979] Bluetooth: RFCOMM socket layer initialized
[ 1.903350] Bluetooth: RFCOMM ver 1.11
[ 1.907287] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 1.912811] Bluetooth: BNEP filters: protocol multicast
[ 1.918273] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 1.924621] Registering the dns_resolver key type
[ 1.929595] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 1.937622] ThumbEE CPU extension supported.
[ 1.942138] mux: Failed to setup hwmod io irq -22
[ 1.947753] Power Management for AM33XX family
[ 1.952606] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[ 1.959320] Copied the M3 firmware to UMEM
[ 1.967620] clock: disabling unused clocks to save power
[ 1.974884] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:06:30 UTC (946685190)
[ 1.984191] Waiting for root device /dev/mmcblk0p2...
