U-Boot SPL 2011.09 (Feb 09 2012 - 15:38:59)
Texas Instruments Revision detection unimplemented
No AC power, disabling frequency switch
OMAP SD/MMC: 0
reading u-boot.img
reading u-boot.img
U-Boot 2011.09 (Feb 09 2012 - 15:11:31)
I2C: ready
DRAM: 256 MiB
WARNING: Caches not enabled
No daughter card present
NAND: HW ECC Hamming Code selected
nand_get_flash_type: unknown NAND device: Manufacturer ID: 0x10, Chip ID: 0x10
No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment
Net: cpsw
Hit any key to stop autoboot: 3 2 1 0
SD/MMC found on device 0
reading uEnv.txt
** Unable to read "uEnv.txt" from mmc 0:1 **
reading uImage
2922160 bytes read
## Booting kernel from Legacy Image at 80007fc0 ...
Image Name: Arago/3.1.0-psp04.06.00.03.sdk/a
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2922096 Bytes = 2.8 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
XIP Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Linux version 3.1.0 (jenkins@sdit-build01) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #1 Thu Feb 9 14:58:49 CST 2012
[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
[ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: am335xevm
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] AM335X ES1.0 (neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait ip=none
[ 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: 253724k/253724k available, 8420k 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] DMA : 0xffa00000 - 0xffe00000 ( 4 MB)
[ 0.000000] vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0534000 (5296 kB)
[ 0.000000] .init : 0xc0534000 - 0xc056d000 ( 228 kB)
[ 0.000000] .data : 0xc056e000 - 0xc05c2d80 ( 340 kB)
[ 0.000000] .bss : 0xc05c2da4 - 0xc05fd320 ( 234 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: GPTIMER1 at 24000000 Hz
[ 0.000000] OMAP clocksource: GPTIMER2 at 24000000 Hz
[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
[ 0.000000] Console: colour dummy device 80x30
[ 0.000253] Calibrating delay loop... 498.89 BogoMIPS (lpj=2494464)
[ 0.058628] pid_max: default: 32768 minimum: 301
[ 0.058790] Security Framework initialized
[ 0.058912] Mount-cache hash table entries: 512
[ 0.059362] CPU: Testing write buffer coherency: ok
[ 0.064934] print_constraints: dummy:
[ 0.065406] NET: Registered protocol family 16
[ 0.065830] GPMC revision 6.0
[ 0.068424] OMAP GPIO hardware version 0.1
[ 0.071354] omap_l3_smx omap_l3_smx.0: couldn't find resource
[ 0.071988] omap_mux_init: Add partition: #1: core, flags: 0
[ 0.075901] omap_i2c.1: alias fck already exists
[ 0.077889] omap2_mcspi.1: alias fck already exists
[ 0.078180] omap2_mcspi.2: alias fck already exists
[ 0.108109] bio: create slab <bio-0> at 0
[ 0.110992] SCSI subsystem initialized
[ 0.113083] usbcore: registered new interface driver usbfs
[ 0.113511] usbcore: registered new interface driver hub
[ 0.113780] usbcore: registered new device driver usb
[ 0.128789] omap_i2c omap_i2c.1: bus 1 rev4.0 at 100 kHz
[ 0.131449] Advanced Linux Sound Architecture Driver Version 1.0.24.
[ 0.132812] Switching to clocksource gp timer
[ 0.138705] Switched to NOHz mode on CPU #0
[ 0.153902] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[ 0.154133] musb-hdrc musb-hdrc.0: dma type: pio
[ 0.155200] musb-hdrc musb-hdrc.0: USB OTG mode controller at d080a000 using PIO, IRQ 18
[ 0.155411] musb-hdrc musb-hdrc.1: dma type: pio
[ 0.156324] musb-hdrc musb-hdrc.1: USB OTG mode controller at d080c800 using PIO, IRQ 19
[ 0.156814] NET: Registered protocol family 2
[ 0.157052] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.157416] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.157640] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.157776] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.157792] TCP reno registered
[ 0.157810] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.157842] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.158085] NET: Registered protocol family 1
[ 0.158446] RPC: Registered named UNIX socket transport module.
[ 0.158466] RPC: Registered udp transport module.
[ 0.158479] RPC: Registered tcp transport module.
[ 0.158491] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.158769] NetWinder Floating Point Emulator V0.97 (double precision)
[ 0.172819] VFS: Disk quotas dquot_6.5.2
[ 0.172966] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.173747] JFFS2 version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc.
[ 0.174149] msgmni has been set to 495
[ 0.175124] io scheduler noop registered
[ 0.175144] io scheduler deadline registered
[ 0.175243] io scheduler cfq registered (default)
[ 0.176355] Could not set LED4 to fully on
[ 0.178408] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.180581] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[ 0.659987] console [ttyO0] enabled
[ 0.664378] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[ 0.672236] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[ 0.680168] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[ 0.688038] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[ 0.695901] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[ 0.715591] brd: module loaded
[ 0.725333] loop: module loaded
[ 0.728865] i2c-core: driver [tsl2550] using legacy suspend method
[ 0.735418] i2c-core: driver [tsl2550] using legacy resume method
[ 0.741906] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 0.802863] No daughter card found
[ 0.806495] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 0.821796] Board name: A335BONE
[ 0.825208] Board version: 00A5
[ 0.828508] The board is a AM335x Beaglebone.
[ 0.833525] omap_hsmmc.0: alias fck already exists
[ 0.841749] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 0.848931] omap2-nand driver initializing
[ 0.853581] OneNAND driver initializing
[ 0.902879] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 0.909389] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
[ 0.916784] davinci_mdio.0: probed
[ 0.920369] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720
[ 0.929199] CAN device driver interface
[ 0.933257] CAN bus driver for Bosch D_CAN controller 1.0
[ 0.939832] usbcore: registered new interface driver cdc_ether
[ 0.946234] usbcore: registered new interface driver cdc_subset
[ 0.952513] Initializing USB Mass Storage driver...
[ 0.957911] usbcore: registered new interface driver usb-storage
[ 0.964253] USB Mass Storage support registered.
[ 0.969168] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
[ 0.974856] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
[ 0.982764] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.989936] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.997547] usb usb1: Product: MUSB HDRC host driver
[ 1.002766] usb usb1: Manufacturer: Linux 3.1.0 musb-hcd
[ 1.008371] usb usb1: SerialNumber: musb-hdrc.1
[ 1.014154] hub 1-0:1.0: USB hub found
[ 1.018133] hub 1-0:1.0: 1 port detected
[ 1.023665] mousedev: PS/2 mouse device common for all mice
[ 1.030917] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[ 1.037693] omap_rtc: already running
[ 1.041843] i2c /dev entries driver
[ 1.048636] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 1.055641] cpuidle: using governor ladder
[ 1.060588] cpuidle: using governor menu
[ 1.069282] usbcore: registered new interface driver usbhid
[ 1.075227] usbhid: USB HID core driver
[ 1.080254] usbcore: registered new interface driver snd-usb-audio
[ 1.089170] ALSA device list:
[ 1.092295] No soundcards found.
[ 1.095923] oprofile: hardware counters not available
[ 1.101232] oprofile: using timer interrupt.
[ 1.105771] nf_conntrack version 0.5.0 (3964 buckets, 15856 max)
[ 1.112705] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1.118486] TCP cubic registered
[ 1.121887] NET: Registered protocol family 17
[ 1.126596] can: controller area network core (rev 20090105 abi 8)
[ 1.133221] NET: Registered protocol family 29
[ 1.137896] can: raw protocol (rev 20090105)
[ 1.142384] can: broadcast manager protocol (rev 20090105 t)
[ 1.148410] Registering the dns_resolver key type
[ 1.153467] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 1.161535] ThumbEE CPU extension supported.
[ 1.166960] _regulator_get: mpu.0 supply mpu not found, using dummy regulator
[ 1.174621] omap2_set_init_voltage: Fail set voltage-dpll_mpu_ck(f=500000000 v=1100000)on vddmpu
[ 1.183885] omap2_set_init_voltage: unable to set vdd_mpu
[ 1.195186] Detected MACID=d4:94:a1:87:66:48
[ 1.201600] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:03:30 UTC (946685010)
[ 1.211060] Waiting for root device /dev/mmcblk0p2...
[ 1.245003] mmc0: host does not support reading read-only switch. assuming write-enable.
[ 1.256216] mmc0: new high speed SD card at address 1234
[ 1.262652] mmcblk0: mmc0:1234 SA02G 1.83 GiB
[ 1.271453] mmcblk0:
[ 1.323118] VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2)
[ 1.330533] Please append a correct "root=" boot option; here are the available partitions:
[ 1.339372] b300 1927168 mmcblk0 driver: mmcblk
[ 1.344983] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)
[ 1.353873] Backtrace:
[ 1.356493] [<c0017990>] (dump_backtrace+0x0/0x110) from [<c03e6c7c>] (dump_stack+0x18/0x1c)
[ 1.365382] r6:cf937000 r5:c055e9a4 r4:c05c3da0 r3:c058e250
[ 1.371366] [<c03e6c64>] (dump_stack+0x0/0x1c) from [<c03e6cec>] (panic+0x6c/0x1a0)
[ 1.379463] [<c03e6c80>] (panic+0x0/0x1a0) from [<c0534cb4>] (mount_block_root+0x184/0x228)
[ 1.388260] r3:c058e250 r2:00000000 r1:cf81bf58 r0:c04adf70
[ 1.394242] r7:00008000
[ 1.396918] [<c0534b30>] (mount_block_root+0x0/0x228) from [<c0534f1c>] (mount_root+0xd8/0xe0)
[ 1.405996] [<c0534e44>] (mount_root+0x0/0xe0) from [<c05350c4>] (prepare_namespace+0x1a0/0x1dc)
[ 1.415246] r4:c05c2e20
[ 1.417920] [<c0534f24>] (prepare_namespace+0x0/0x1dc) from [<c053490c>] (kernel_init+0x124/0x130)
[ 1.427352] r5:c056ca28 r4:c056ca28
[ 1.431142] [<c05347e8>] (kernel_init+0x0/0x130) from [<c004076c>] (do_exit+0x0/0x6a0)
[ 1.439478] r5:c05347e8 r4:00000000
then stopped，This is why？
