nandflash为K9F2G08U0C，以下为启动代码，驱动没有修改，内核启动了，但是无法启动ubi.img文件系统。
U-Boot SPL 2013.01.01-00123-g2830d15-dirty (Mar 05 2015 - 15:12:04)
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Peripheral mode controller at 47401000 using PIO, IRQ 0
musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
musb-hdrc: MHDRC RTL version 2.0
musb-hdrc: setup fifo_mode 4
musb-hdrc: 28/31 max ep, 16384/16384 memory
USB Host mode controller at 47401800 using PIO, IRQ 0
xlj BOOT_DEVICE_NAND
U-Boot 2013.01.01-00123-g2830d15-dirty (Mar 05 2015 - 15:12:04)
I2C: ready
DRAM: 256 MiB
WARNING: Caches not enabled
NAND: 256 MiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Net: cpsw
xlj enter auto_load_mmc
xlj set successsful
mmc not insert!
Hit any key to stop autoboot: 0
mmc_send_cmd : timeout: No status update
Card did not respond to voltage select!
mmc0(part 0) is current device
mmc_send_cmd : timeout: No status update
Card did not respond to voltage select!
Booting from nand ...
HW BCH8 selected
NAND read: device 0 offset 0x280000, size 0x500000
5242880 bytes read: OK
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux-3.2.0-00244-gcf99001-dirty
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4073064 Bytes = 3.9 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Linux version 3.2.0-00244-gcf99001-dirty (root@xlj-virtual-machine) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #25 Wed Mar 4 19:18:57 CST 2015
[ 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 ES2.1 (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=256M root=ubi0:rootfs rootfstype=ubifs ubi.mtd=7,2048 rw rootwait init=/init ip=off
[ 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: 250204k/250204k available, 11940k 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 - 0xc0758000 (7488 kB)
[ 0.000000] .init : 0xc0758000 - 0xc07ac000 ( 336 kB)
[ 0.000000] .data : 0xc07ac000 - 0xc0814b30 ( 419 kB)
[ 0.000000] .bss : 0xc0814b54 - 0xc096c708 (1375 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 25000000 Hz
[ 0.000000] omap_dm_timer_switch_src: Switching to HW default clocksource(sys_clkin_ck) for timer1, this may impact timekeeping in low power state
[ 0.000000] OMAP clocksource: GPTIMER1 at 25000000 Hz
[ 0.000000] sched_clock: 32 bits at 25MHz, resolution 40ns, wraps every 171798ms
[ 0.000000] Console: colour dummy device 80x30
[ 0.000201] Calibrating delay loop... 829.84 BogoMIPS (lpj=4149248)
[ 0.087461] pid_max: default: 32768 minimum: 301
[ 0.087583] Security Framework initialized
[ 0.087646] Mount-cache hash table entries: 512
[ 0.088036] CPU: Testing write buffer coherency: ok
[ 0.088096] ftrace: allocating 21480 entries in 64 pages
[ 0.149223] omap_hwmod: pruss: failed to hardreset
[ 0.149988] print_constraints: dummy:
[ 0.150191] NET: Registered protocol family 16
[ 0.151207] OMAP GPIO hardware version 0.1
[ 0.152186] omap_mux_init: Add partition: #1: core, flags: 0
[ 0.153175] omap_i2c.1: alias fck already exists
[ 0.153641] omap2_mcspi.1: alias fck already exists
[ 0.153741] omap2_mcspi.2: alias fck already exists
[ 0.153870] edma.0: alias fck already exists
[ 0.153887] edma.0: alias fck already exists
[ 0.153902] edma.0: alias fck already exists
[ 0.162488] bio: create slab <bio-0> at 0
[ 0.163399] SCSI subsystem initialized
[ 0.164159] usbcore: registered new interface driver usbfs
[ 0.164264] usbcore: registered new interface driver hub
[ 0.164393] usbcore: registered new device driver usb
[ 0.164674] registerd cppi-dma Intr @ IRQ 17
[ 0.164687] Cppi41 Init Done Qmgr-base(d087a000) dma-base(d0878000)
[ 0.164696] Cppi41 Init Done
[ 0.164722] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
[ 0.164869] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
[ 0.165263] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
[ 0.166448] tps65910 1-002d: JTAGREVNUM 0x0
[ 0.168513] print_constraints: VRTC:
[ 0.169803] print_constraints: VIO: at 1800 mV
[ 0.171906] print_constraints: VDD1: 600 <--> 1500 mV at 1137 mV normal
[ 0.174003] print_constraints: VDD2: 600 <--> 1500 mV at 1137 mV normal
[ 0.174863] print_constraints: VDD3: 5000 mV
[ 0.176109] print_constraints: VDIG1: at 1800 mV
[ 0.177382] print_constraints: VDIG2: at 1800 mV
[ 0.178650] print_constraints: VPLL: at 1800 mV
[ 0.179907] print_constraints: VDAC: at 1800 mV
[ 0.181164] print_constraints: VAUX1: at 1800 mV
[ 0.182430] print_constraints: VAUX2: at 3300 mV
[ 0.183684] print_constraints: VAUX33: at 3300 mV
[ 0.184947] print_constraints: VMMC: at 3300 mV
[ 0.185228] tps65910 1-002d: No interrupt support, no core IRQ
[ 0.185727] Advanced Linux Sound Architecture Driver Version 1.0.24.
[ 0.186296] Switching to clocksource gp timer
[ 0.202736] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
[ 0.202927] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
[ 0.203099] MUSB0 controller's USBSS revision = 4ea20800
[ 0.203128] musb0: Enabled SW babble control
[ 0.203924] musb-hdrc musb-hdrc.0: USB OTG mode controller at d083c000 using DMA, IRQ 18
[ 0.204151] musb-hdrc musb-hdrc.1: dma type: dma-cppi41
[ 0.204308] MUSB1 controller's USBSS revision = 4ea20800
[ 0.204333] musb1: Enabled SW babble control
[ 0.204743] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
[ 0.204831] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
[ 0.204957] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 0.204971] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 0.204983] usb usb1: Product: MUSB HDRC host driver
[ 0.204993] usb usb1: Manufacturer: Linux 3.2.0-00244-gcf99001-dirty musb-hcd
[ 0.205003] usb usb1: SerialNumber: musb-hdrc.1
[ 0.205462] hub 1-0:1.0: USB hub found
[ 0.205487] hub 1-0:1.0: 1 port detected
[ 0.205855] musb-hdrc musb-hdrc.1: USB Host mode controller at d083e800 using DMA, IRQ 19
[ 0.206206] NET: Registered protocol family 2
[ 0.206486] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.206845] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.206980] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.207062] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.207074] TCP reno registered
[ 0.207085] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.207105] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.207287] NET: Registered protocol family 1
[ 0.207552] RPC: Registered named UNIX socket transport module.
[ 0.207564] RPC: Registered udp transport module.
[ 0.207572] RPC: Registered tcp transport module.
[ 0.207580] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.207837] NetWinder Floating Point Emulator V0.97 (double precision)
[ 0.309000] ashmem: initialized
[ 0.309244] VFS: Disk quotas dquot_6.5.2
[ 0.309303] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.310139] fuse init (API version 7.17)
[ 0.310349] msgmni has been set to 488
[ 0.311284] io scheduler noop registered
[ 0.311296] io scheduler deadline registered
[ 0.311373] io scheduler cfq registered (default)
[ 0.311917] Could not set LED4 to fully on
[ 0.327018] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
[ 0.977683] console [ttyO0] enabled
[ 0.981565] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
[ 0.988954] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
[ 0.996273] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
[ 1.003632] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
[ 1.010976] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
[ 1.018464] [drm] Initialized drm 1.1.0 20060810
[ 1.028417] brd: module loaded
[ 1.034179] loop: module loaded
[ 1.037571] i2c-core: driver [tsl2550] using legacy suspend method
[ 1.043771] i2c-core: driver [tsl2550] using legacy resume method
[ 1.049960] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.056984] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
[ 1.063967] xlj am335x_evm_setup
[ 1.126336] The board is a AM335x Starter Kit.
[ 1.131177] omap_hsmmc.0: alias fck already exists
[ 1.136799] da8xx_lcdc.0: alias fck already exists
[ 1.141891] da8xx_lcdc da8xx_lcdc.0: GLCD: Found TFC_S9700RTWV35TR_01B panel
[ 1.159772] xlj touchscreen device 4
[ 1.165927] (hci_tty): inside hci_tty_init
[ 1.170241] (hci_tty): allocated 251, 0
[ 1.174459] NFC Driver for TI WiLink
[ 1.178726] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.185501] omap2-nand driver initializing
[ 1.189713] OneNAND driver initializing
[ 1.193995] UBI error: ubi_init: UBI error: cannot initialize UBI, error -19
[ 1.201296] CAN device driver interface
[ 1.205141] CAN bus driver for Bosch D_CAN controller 1.0
[ 1.256356] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
[ 1.262564] davinci_mdio davinci_mdio.0: detected phy mask fffffffe
[ 1.269697] davinci_mdio.0: probed
[ 1.273117] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver unknown
[ 1.280272] PPP generic driver version 2.4.2
[ 1.284713] PPP BSD Compression module registered
[ 1.289454] PPP Deflate Compression module registered
[ 1.294648] usbcore: registered new interface driver cdc_ether
[ 1.300569] usbcore: registered new interface driver cdc_eem
[ 1.306292] usbcore: registered new interface driver dm9601
[ 1.311947] usbcore: registered new interface driver cdc_subset
[ 1.317940] cdc_ncm: 04-Aug-2011
[ 1.321228] usbcore: registered new interface driver cdc_ncm
[ 1.326998] usbcore: registered new interface driver cdc_acm
[ 1.332673] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 1.340715] Initializing USB Mass Storage driver...
[ 1.345722] usbcore: registered new interface driver usb-storage
[ 1.351761] USB Mass Storage support registered.
[ 1.356552] usbcore: registered new interface driver usbserial
[ 1.362452] USB Serial support registered for generic
[ 1.367602] usbcore: registered new interface driver usbserial_generic
[ 1.374150] usbserial: USB Serial Driver core
[ 1.378570] USB Serial support registered for GSM modem (1-port)
[ 1.384735] usbcore: registered new interface driver option
[ 1.390341] option: v0.7.2:USB Driver for GSM modems
[ 1.396851] gadget: Mass Storage Function, version: 2009/09/11
[ 1.402798] gadget: Number of LUNs=1
[ 1.406497] lun0: LUN: removable file: (no medium)
[ 1.411604] gadget: android_usb ready
[ 1.415380] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
[ 1.420793] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
[ 1.428337] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.435149] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.442411] usb usb2: Product: MUSB HDRC host driver
[ 1.447401] usb usb2: Manufacturer: Linux 3.2.0-00244-gcf99001-dirty musb-hcd
[ 1.454558] usb usb2: SerialNumber: musb-hdrc.0
[ 1.459551] hub 2-0:1.0: USB hub found
[ 1.463333] hub 2-0:1.0: 1 port detected
[ 1.467879] mousedev: PS/2 mouse device common for all mice
[ 1.474039] input: matrix-keypad as /devices/platform/matrix-keypad/input/input0
[ 1.482346] input: ti-tsc as /devices/platform/omap/ti_tscadc/tsc/input/input1
[ 1.490230] i2c /dev entries driver
[ 1.493910] Linux video capture interface: v2.00
[ 1.498836] usbcore: registered new interface driver uvcvideo
[ 1.504603] USB Video Class driver (1.1.1)
[ 1.547109] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
[ 1.553379] device-mapper: uevent: version 1.0.3
[ 1.558237] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: dm-devel@redhat.com
[ 1.570830] cpuidle: using governor ladder
[ 1.575101] cpuidle: using governor menu
[ 1.581656] usbcore: registered new interface driver usbhid
[ 1.587336] usbhid: USB HID core driver
[ 1.591655] logger: created 256K log 'log_main'
[ 1.596368] logger: created 256K log 'log_events'
[ 1.601219] logger: created 256K log 'log_radio'
[ 1.605974] logger: created 256K log 'log_system'
[ 1.611275] usbcore: registered new interface driver snd-usb-audio
[ 1.618446] ALSA device list:
[ 1.621445] No soundcards found.
[ 1.624877] oprofile: hardware counters not available
[ 1.630019] oprofile: using timer interrupt.
[ 1.634498] Netfilter messages via NETLINK v0.30.
[ 1.639381] nf_conntrack version 0.5.0 (3909 buckets, 15636 max)
[ 1.645777] ctnetlink v0.93: registering with nfnetlink.
[ 1.651240] NF_TPROXY: Transparent proxy support initialized, version 4.1.0
[ 1.658289] NF_TPROXY: Copyright (c) 2006-2007 BalaBit IT Ltd.
[ 1.664511] xt_time: kernel timezone is -0000
[ 1.669161] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1.674722] arp_tables: (C) 2002 David S. Miller
[ 1.679479] TCP cubic registered
[ 1.682900] NET: Registered protocol family 10
[ 1.688167] Mobile IPv6
[ 1.690679] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 1.696357] IPv6 over IPv4 tunneling driver
[ 1.701164] NET: Registered protocol family 17
[ 1.705687] NET: Registered protocol family 15
[ 1.710210] can: controller area network core (rev 20090105 abi 8)
[ 1.716583] NET: Registered protocol family 29
[ 1.721074] can: raw protocol (rev 20090105)
[ 1.725384] can: broadcast manager protocol (rev 20090105 t)
[ 1.731169] Registering the dns_resolver key type
[ 1.735980] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
[ 1.743747] ThumbEE CPU extension supported.
[ 1.748133] mux: Failed to setup hwmod io irq -22
[ 1.753587] Power Management for AM33XX family
[ 1.758317] Trying to load am335x-pm-firmware.bin (60 secs timeout)
[ 1.764773] Copied the M3 firmware to UMEM
[ 1.769007] Cortex M3 Firmware Version = 0x181
[ 1.777865] clock: disabling unused clocks to save power
[ 1.784680] Detected MACID=d0:39:72:17:80:29
[ 1.791371] input: gpio-keys as /devices/platform/gpio-keys/input/input2
[ 1.798505] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 1.805318] VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0)
[ 1.812481] Please append a correct "root=" boot option; here are the available partitions:
[ 1.820965] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 1.829324] Backtrace:
[ 1.831827] [<c00176e8>] (dump_backtrace+0x0/0x114) from [<c057bd4c>] (dump_stack+0x20/0x24)
[ 1.840366] r6:c0788ec4 r5:00000000 r4:c0817898 r3:c07d2fa0
[ 1.846104] [<c057bd2c>] (dump_stack+0x0/0x24) from [<c057bf64>] (panic+0x6c/0x190)
[ 1.853863] [<c057bef8>] (panic+0x0/0x190) from [<c0758c5c>] (mount_block_root+0x178/0x22c)
[ 1.862309] r3:00000000 r2:00000000 r1:cf069f78 r0:c06a49a8
[ 1.868050] r7:00008000
[ 1.870616] [<c0758ae4>] (mount_block_root+0x0/0x22c) from [<c0758f74>] (prepare_namespace+0x94/0x1c0)
[ 1.880034] [<c0758ee0>] (prepare_namespace+0x0/0x1c0) from [<c07588c8>] (kernel_init+0xf0/0x11c)
[ 1.889009] r5:c07ab5dc r4:c07ab5dc
[ 1.892646] [<c07587d8>] (kernel_init+0x0/0x11c) from [<c004553c>] (do_exit+0x0/0x6c4)
[ 1.900654] r5:c07587d8 r4:00000000
[ 6.7496
