UBI文件系统的使用

怎么没人来支援下啊

您可以先版内搜索下ubi，其实，我们已经有客户写了很完善的文档了，请参考http://www.deyisupport.com/question_answer/f/25/p/11199/48044.aspx#48044 

参考了没有用啊，系统只能正常启动一次。要想正常启动都要重新烧写文件系统，而且每次启动后坏块不断增多

以下是不正常的LOG

Uncompressing Linux... done, booting the kernel.
[    0.000000] Linux version 2.6.37 (luheng@luheng) (gcc version 4.3.3

(Sourcery G++ Lite 2009q1-203) ) #121 Thu Jan 3 16:40:17 CST 2013
[    0.000000] CPU: ARMv7 Processor [411fc087] revision 7 (ARMv7),

cr=10c53c7f
[    0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing

instruction cache
[    0.000000] Machine: AM3505 3I_BOARD
[    0.000000] Reserving 4194304 bytes SDRAM for VRAM
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] AM3505 ES1.1 (l2cache iva neon isp )
[    0.000000] SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x10000
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total

pages: 64000
[    0.000000] Kernel command line: console=ttyO2,115200n8 ubi.mtd=4

root=ubi0:rootfs-nand rw rootfstype=ubifs
[    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: 252MB = 252MB total
[    0.000000] Memory: 243292k/243292k available, 18852k 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     : 0xffc00000 - 0xffe00000   (   2 MB)
[    0.000000]     vmalloc : 0xd0800000 - 0xf8000000   ( 632 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
[    0.000000]       .init : 0xc0008000 - 0xc0093000   ( 556 kB)
[    0.000000]       .text : 0xc0093000 - 0xc04f332c   (4481 kB)
[    0.000000]       .data : 0xc04f4000 - 0xc069a460   (1690 kB)
[    0.000000] NR_IRQS:375
[    0.000000] Clocking rate (Crystal/Core/MPU): 26.0/332/600 MHz
[    0.000000] omap_hwmod: i2c1: softreset failed (waited 10000 usec)
[    0.000000] omap_hwmod: i2c2: softreset failed (waited 10000 usec)
[    0.000000] omap_hwmod: i2c3: softreset failed (waited 10000 usec)
[    0.000000] Reprogramming SDRC clock to 332000000 Hz
[    0.000000] dpll3_m2_clk rate change failed: -22
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96

interrupts
[    0.000000] Total of 96 interrupts on 1 active controller
[    0.000000] GPMC revision 5.0
[    0.000000] Trying to install interrupt handler for IRQ368
[    0.000000] Trying to install interrupt handler for IRQ369
[    0.000000] Trying to install interrupt handler for IRQ370
[    0.000000] Trying to install interrupt handler for IRQ371
[    0.000000] Trying to install interrupt handler for IRQ372
[    0.000000] Trying to install interrupt handler for IRQ373
[    0.000000] Trying to install interrupt handler for IRQ374
[    0.000000] Trying to install type control for IRQ375
[    0.000000] Trying to set irq flags for IRQ375
[    0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz
[    0.000000] Console: colour dummy device 80x30
[    0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc.,

Ingo Molnar
[    0.000000] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.000000] ... MAX_LOCK_DEPTH:          48
[    0.000000] ... MAX_LOCKDEP_KEYS:        8191
[    0.000000] ... CLASSHASH_SIZE:          4096
[    0.000000] ... MAX_LOCKDEP_ENTRIES:     16384
[    0.000000] ... MAX_LOCKDEP_CHAINS:      32768
[    0.000000] ... CHAINHASH_SIZE:          16384
[    0.000000]  memory used by lock dependency info: 3951 kB
[    0.000000]  per task-struct memory footprint: 2304 bytes
[    0.000000] Calibrating delay loop... 601.84 BogoMIPS (lpj=2351104)
[    0.000000] pid_max: default: 32768 minimum: 301
[    0.000000] Security Framework initialized
[    0.000000] Mount-cache hash table entries: 512
[    0.000000] CPU: Testing write buffer coherency: ok
[    0.000000] regulator: core version 0.5
[    0.000000] regulator: dummy:
[    0.000000] NET: Registered protocol family 16
[    0.000000] ------------[ cut here ]------------
[    0.000000] WARNING: at arch/arm/mach-omap2/pm.c:94

_init_omap_device+0x84/0xa4()
[    0.000000] _init_omap_device: could not find omap_hwmod for iva
[    0.000000] Modules linked in:
[    0.000000] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c00c76a4>]

(warn_slowpath_common+0x4c/0x64)
[    0.000000] [<c00c76a4>] (warn_slowpath_common+0x4c/0x64) from

[<c00c773c>] (warn_slowpath_fmt+0x2c/0x3c)
[    0.000000] [<c00c773c>] (warn_slowpath_fmt+0x2c/0x3c) from [<c00aad54>]

(_init_omap_device+0x84/0xa4)
[    0.000000] [<c00aad54>] (_init_omap_device+0x84/0xa4) from [<c000fda8>]

(omap2_common_pm_init+0x2c/0x10c)
[    0.000000] [<c000fda8>] (omap2_common_pm_init+0x2c/0x10c) from

[<c00933b8>] (do_one_initcall+0xc8/0x1a0)
[    0.000000] [<c00933b8>] (do_one_initcall+0xc8/0x1a0) from [<c0008690>]

(kernel_init+0x94/0x14c)
[    0.000000] [<c0008690>] (kernel_init+0x94/0x14c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    0.000000] ---[ end trace 1b75b31a2719ed1c ]---
[    0.000000] OMAP GPIO hardware version 2.5
[    0.000000] OMAP GPIO hardware version 2.5
[    0.000000] OMAP GPIO hardware version 2.5
[    0.000000] OMAP GPIO hardware version 2.5
[    0.000000] OMAP GPIO hardware version 2.5
[    0.000000] OMAP GPIO hardware version 2.5
[    0.000000] omap_mux_init: Add partition: #1: core, flags: 0
[    0.000000] Display initialized successfully
[    0.000000] hw-breakpoint: debug architecture 0x4 unsupported.
[    0.000000] OMAP DMA hardware revision 4.0
[    0.059600] bio: create slab <bio-0> at 0
[    0.068420] SCSI subsystem initialized
[    0.073669] usbcore: registered new interface driver usbfs
[    0.075500] usbcore: registered new interface driver hub
[    0.076904] usbcore: registered new device driver usb
[    0.081848] omap_device: omap_i2c.1: new worst case activate latency 0:

30517
[    0.091522] omap_i2c omap_i2c.1: bus 1 rev3.12 at 400 kHz
[    0.095275] omap_device: omap_i2c.1: new worst case deactivate latency 0:

30517
[    0.102325] Switching to clocksource 32k_counter
[    0.256225] musb-hdrc: version 6.0, otg (peripheral+host), debug=0
[    0.256805] musb-hdrc musb-hdrc.0: dma type: dma-cppi41
[    0.258331] <6>Waiting for PHY clock good...
[    0.276733] musb-hdrc musb-hdrc.0: USB OTG mode controller at d0810000

using DMA, IRQ 71
[    0.278839] NET: Registered protocol family 2
[    0.279541] IP route cache hash table entries: 2048 (order: 1, 8192

bytes)
[    0.281494] TCP established hash table entries: 8192 (order: 4, 65536

bytes)
[    0.282012] TCP bind hash table entries: 8192 (order: 6, 360448 bytes)
[    0.286987] TCP: Hash tables configured (established 8192 bind 8192)
[    0.287078] TCP reno registered
[    0.287139] UDP hash table entries: 128 (order: 1, 12288 bytes)
[    0.287475] UDP-Lite hash table entries: 128 (order: 1, 12288 bytes)
[    0.288726] NET: Registered protocol family 1
[    0.290161] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.292327] omap_init_opp_table: no hwmod or odev for iva, [9] cannot add

OPPs.
[    0.295379] AM3505  Linux PSP version 04.02.00.07 (AM3517EVM)
[    0.426971] VFS: Disk quotas dquot_6.5.2
[    0.427093] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.428649] msgmni has been set to 475
[    0.434295] io scheduler noop registered
[    0.434326] io scheduler deadline registered
[    0.434539] io scheduler cfq registered (default)
[    0.440490] Generic Backlight Driver Initialized.
[    0.501251] OMAP DSS rev 2.0
[    0.501373] omapdss supply vdds_dsi not found, using dummy regulator
[    0.501892] OMAP DISPC rev 3.0
[    0.501953] omapdss supply vdda_dac not found, using dummy regulator
[    0.502136] OMAP VENC rev 2
[    0.503479] OMAP DSI rev 1.0
[    0.668060] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.678344] omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq = 72) is a OMAP

UART0
[    0.680694] omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq = 73) is a OMAP

UART1
[    0.682342] omap_uart.2: ttyO2 at MMIO 0x49020000 (irq = 74) is a OMAP

UART2
[    1.415924] console [ttyO2] enabled
[    1.472869] brd: module loaded
[    1.502136] loop: module loaded
[    1.506347] usbcore: registered new interface driver ub
[    1.519470] mtdoops: mtd device (mtddev=name/number) must be supplied
[    1.527465] omap2-nand driver initializing
[    1.532287] nand MFR:0xEC,ID:0xDA
[    1.535888] NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung )
[    1.543060] Creating 5 MTD partitions on "omap2-nand.0":
[    1.548645] 0x000000000000-0x000000080000 : "xloader-nand"
[    1.565002] 0x000000080000-0x000000240000 : "uboot-nand"
[    1.578918] 0x000000240000-0x000000280000 : "params-nand"
[    1.592102] 0x000000280000-0x000000780000 : "linux-nand"
[    1.607543] 0x000000780000-0x000010000000 : "rootfs-nand"
[    1.754913] UBI: attaching mtd4 to ubi0
[    1.759155] UBI: physical eraseblock size:   131072 bytes (128 KiB)
[    1.765625] UBI: logical eraseblock size:    129024 bytes
[    1.771301] UBI: smallest flash I/O unit:    2048
[    1.776214] UBI: sub-page size:              512
[    1.780975] UBI: VID header offset:          512 (aligned 512)
[    1.787078] UBI: data offset:                2048
[    1.794128] UBI error: ubi_io_read: error -74 (ECC error) while reading

64 bytes from PEB 2:0, read 64 bytes
[    1.804473] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be868>]

(ubi_io_read+0x1b4/0x248)
[    1.813659] [<c02be868>] (ubi_io_read+0x1b4/0x248) from [<c02bee1c>]

(ubi_io_read_ec_hdr+0x6c/0x338)
[    1.823242] [<c02bee1c>] (ubi_io_read_ec_hdr+0x6c/0x338) from

[<c02c24f0>] (ubi_scan+0x1b4/0xb9c)
[    1.832489] [<c02c24f0>] (ubi_scan+0x1b4/0xb9c) from [<c02b9624>]

(ubi_attach_mtd_dev+0x680/0xdb8)
[    1.841888] [<c02b9624>] (ubi_attach_mtd_dev+0x680/0xdb8) from

[<c0021454>] (ubi_init+0x1c8/0x2dc)
[    1.851226] [<c0021454>] (ubi_init+0x1c8/0x2dc) from [<c00933b8>]

(do_one_initcall+0xc8/0x1a0)
[    1.860229] [<c00933b8>] (do_one_initcall+0xc8/0x1a0) from [<c0008690>]

(kernel_init+0x94/0x14c)
[    1.869384] [<c0008690>] (kernel_init+0x94/0x14c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    1.879058] UBI error: ubi_io_read: error -74 (ECC error) while reading

512 bytes from PEB 2:512, read 512 bytes
[    1.889739] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be868>]

(ubi_io_read+0x1b4/0x248)
[    1.898895] [<c02be868>] (ubi_io_read+0x1b4/0x248) from [<c02be96c>]

(ubi_io_read_vid_hdr+0x70/0x4b4)
[    1.908508] [<c02be96c>] (ubi_io_read_vid_hdr+0x70/0x4b4) from

[<c02c26dc>] (ubi_scan+0x3a0/0xb9c)
[    1.917846] [<c02c26dc>] (ubi_scan+0x3a0/0xb9c) from [<c02b9624>]

(ubi_attach_mtd_dev+0x680/0xdb8)
[    1.927185] [<c02b9624>] (ubi_attach_mtd_dev+0x680/0xdb8) from

[<c0021454>] (ubi_init+0x1c8/0x2dc)
[    1.936523] [<c0021454>] (ubi_init+0x1c8/0x2dc) from [<c00933b8>]

(do_one_initcall+0xc8/0x1a0)
[    1.945556] [<c00933b8>] (do_one_initcall+0xc8/0x1a0) from [<c0008690>]

(kernel_init+0x94/0x14c)
[    1.954742] [<c0008690>] (kernel_init+0x94/0x14c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    3.033569] UBI error: ubi_io_read: error -74 (ECC error) while reading

64 bytes from PEB 1987:0, read 64 bytes
[    3.044158] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be868>]

(ubi_io_read+0x1b4/0x248)
[    3.053344] [<c02be868>] (ubi_io_read+0x1b4/0x248) from [<c02bee1c>]

(ubi_io_read_ec_hdr+0x6c/0x338)
[    3.062866] [<c02bee1c>] (ubi_io_read_ec_hdr+0x6c/0x338) from

[<c02c24f0>] (ubi_scan+0x1b4/0xb9c)
[    3.072113] [<c02c24f0>] (ubi_scan+0x1b4/0xb9c) from [<c02b9624>]

(ubi_attach_mtd_dev+0x680/0xdb8)
[    3.081451] [<c02b9624>] (ubi_attach_mtd_dev+0x680/0xdb8) from

[<c0021454>] (ubi_init+0x1c8/0x2dc)
[    3.090789] [<c0021454>] (ubi_init+0x1c8/0x2dc) from [<c00933b8>]

(do_one_initcall+0xc8/0x1a0)
[    3.099792] [<c00933b8>] (do_one_initcall+0xc8/0x1a0) from [<c0008690>]

(kernel_init+0x94/0x14c)
[    3.108947] [<c0008690>] (kernel_init+0x94/0x14c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    3.118621] UBI error: ubi_io_read: error -74 (ECC error) while reading

512 bytes from PEB 1987:512, read 512 bytes
[    3.129547] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be868>]

(ubi_io_read+0x1b4/0x248)
[    3.138763] [<c02be868>] (ubi_io_read+0x1b4/0x248) from [<c02be96c>]

(ubi_io_read_vid_hdr+0x70/0x4b4)
[    3.148376] [<c02be96c>] (ubi_io_read_vid_hdr+0x70/0x4b4) from

[<c02c26dc>] (ubi_scan+0x3a0/0xb9c)
[    3.157714] [<c02c26dc>] (ubi_scan+0x3a0/0xb9c) from [<c02b9624>]

(ubi_attach_mtd_dev+0x680/0xdb8)
[    3.167053] [<c02b9624>] (ubi_attach_mtd_dev+0x680/0xdb8) from

[<c0021454>] (ubi_init+0x1c8/0x2dc)
[    3.176391] [<c0021454>] (ubi_init+0x1c8/0x2dc) from [<c00933b8>]

(do_one_initcall+0xc8/0x1a0)
[    3.185394] [<c00933b8>] (do_one_initcall+0xc8/0x1a0) from [<c0008690>]

(kernel_init+0x94/0x14c)
[    3.194549] [<c0008690>] (kernel_init+0x94/0x14c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    3.204284] UBI: max. sequence number:       248
[    3.232635] UBI: attached mtd4 to ubi0
[    3.236663] UBI: MTD device name:            "rootfs-nand"
[    3.242370] UBI: MTD device size:            248 MiB
[    3.247589] UBI: number of good PEBs:        1953
[    3.252532] UBI: number of bad PEBs:         35
[    3.257232] UBI: number of corrupted PEBs:   0
[    3.261932] UBI: max. allowed volumes:       128
[    3.266784] UBI: wear-leveling threshold:    4096
[    3.271667] UBI: number of internal volumes: 1
[    3.276336] UBI: number of user volumes:     1
[    3.280944] UBI: available PEBs:             0
[    3.285644] UBI: total number of reserved PEBs: 1953
[    3.290863] UBI: number of PEBs reserved for bad PEB handling: 19
[    3.297180] UBI: max/mean erase counter: 4/1
[    3.301666] UBI: image sequence number:  0
[    3.307586] UBI: background thread "ubi_bgt0d" started, PID 379
[    3.317352] UBI error: ubi_io_read: error -74 (ECC error) while reading

512 bytes from PEB 2:512, read 512 bytes
[    3.328094] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be868>]

(ubi_io_read+0x1b4/0x248)
[    3.337341] [<c02be868>] (ubi_io_read+0x1b4/0x248) from [<c02be96c>]

(ubi_io_read_vid_hdr+0x70/0x4b4)
[    3.346954] [<c02be96c>] (ubi_io_read_vid_hdr+0x70/0x4b4) from

[<c02c0710>] (wear_leveling_worker+0x1c8/0x650)
[    3.357360] [<c02c0710>] (wear_leveling_worker+0x1c8/0x650) from

[<c02c0ed8>] (do_work+0xd4/0x114)
[    3.366729] [<c02c0ed8>] (do_work+0xd4/0x114) from [<c02c0fec>]

(ubi_thread+0xd4/0x178)
[    3.375091] [<c02c0fec>] (ubi_thread+0xd4/0x178) from [<c00e24e4>]

(kthread+0x84/0x8c)
[    3.383361] [<c00e24e4>] (kthread+0x84/0x8c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    3.430938] UBI error: ubi_io_read: error -74 (ECC error) while reading

512 bytes from PEB 525:512, read 512 bytes
[    3.441802] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be868>]

(ubi_io_read+0x1b4/0x248)
[    3.450988] [<c02be868>] (ubi_io_read+0x1b4/0x248) from [<c02be96c>]

(ubi_io_read_vid_hdr+0x70/0x4b4)
[    3.460601] [<c02be96c>] (ubi_io_read_vid_hdr+0x70/0x4b4) from

[<c02bcc20>] (ubi_eba_copy_leb+0x394/0x544)
[    3.470703] [<c02bcc20>] (ubi_eba_copy_leb+0x394/0x544) from [<c02c07b8>]

(wear_leveling_worker+0x270/0x650)
[    3.480957] [<c02c07b8>] (wear_leveling_worker+0x270/0x650) from

[<c02c0ed8>] (do_work+0xd4/0x114)
[    3.490295] [<c02c0ed8>] (do_work+0xd4/0x114) from [<c02c0fec>]

(ubi_thread+0xd4/0x178)
[    3.498657] [<c02c0fec>] (ubi_thread+0xd4/0x178) from [<c00e24e4>]

(kthread+0x84/0x8c)
[    3.506927] [<c00e24e4>] (kthread+0x84/0x8c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    3.515869] davinci_mdio davinci_mdio: davinci mdio revision 1.5
[    3.522216] davinci_mdio davinci_mdio: detected phy mask fffffffd
[    3.529418] UBI: run torture test for PEB 525
[    3.595336] davinci_mdio: probed
[    3.598724] davinci_mdio davinci_mdio: phy[1]: device ffffffff:01, driver

unknown
[    3.607116] UBI error: ubi_io_write: error -5 while writing 131072 bytes

to PEB 525:0, written 88064 bytes
[    3.617309] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c02be450>]

(ubi_io_write+0x194/0x1f8)
[    3.626586] [<c02be450>] (ubi_io_write+0x194/0x1f8) from [<c02bf4d0>]

(ubi_io_sync_erase+0x238/0x360)
[    3.636199] [<c02bf4d0>] (ubi_io_sync_erase+0x238/0x360) from

[<c02c0124>] (erase_worker+0x78/0x49c)
[    3.645721] [<c02c0124>] (erase_worker+0x78/0x49c) from [<c02c0ed8>]

(do_work+0xd4/0x114)
[    3.654266] [<c02c0ed8>] (do_work+0xd4/0x114) from [<c02c0fec>]

(ubi_thread+0xd4/0x178)
[    3.662628] [<c02c0fec>] (ubi_thread+0xd4/0x178) from [<c00e24e4>]

(kthread+0x84/0x8c)
[    3.670928] [<c00e24e4>] (kthread+0x84/0x8c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)
[    3.816040] UBI error: erase_worker: failed to erase PEB 525, error -5
[    3.822967] UBI: mark PEB 525 as bad
[    3.827911] vcan: Virtual CAN interface driver
[    3.832641] CAN device driver interface
[    3.836639] TI High End CAN Controller Driver 0.7
[    3.845306] ti_hecc ti_hecc: device registered (reg_base=d0890000,

irq=24)
[    3.853546] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    3.861968] usbcore: registered new interface driver uas
[    3.867492] Initializing USB Mass Storage driver...
[    3.873565] usbcore: registered new interface driver usb-storage
[    3.879882] USB Mass Storage support registered.
[    3.885650] usbcore: registered new interface driver usbtest
[    3.891723] zero gadget: Gadget Zero, version: Cinco de Mayo 2008
[    3.898071] zero gadget: zero ready
[    3.901794] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
[    3.909179] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus

number 1
[    3.917938] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    3.925109] usb usb1: New USB device strings: Mfr=3, Product=2,

SerialNumber=1
[    3.932678] usb usb1: Product: MUSB HDRC host driver
[    3.937835] usb usb1: Manufacturer: Linux 2.6.37 musb-hcd
[    3.943511] usb usb1: SerialNumber: musb-hdrc.0
[    3.953857] hub 1-0:1.0: USB hub found
[    3.958160] hub 1-0:1.0: 1 port detected
[    3.971710] input: matrix-keypad as /devices/platform/matrix-

keypad/input/input0
[    3.979736] !!!input.c517:input_open_device enter
[    3.984741] !!!input.c517:input_open_device enter
[    4.000732] UBI error: ubi_io_mark_bad: cannot mark PEB 525 bad, error -5
[    4.007873] UBI warning: ubi_ro_mode: switch to read-only mode
[    4.014007] UBI error: do_work: work failed with error code -5
[    4.020202] UBI error: ubi_thread: ubi_bgt0d: work failed with error code

-5
[    4.028259] !!!input.c517:input_open_device enter
[    4.034423] led: can't get major number
[    4.038879] omap_device: omap_i2c.1: new worst case activate latency 0:

61035
[    4.049926] bq32k 1-0068: rtc core: registered bq32k as rtc0
[    4.056854] i2c /dev entries driver
[    4.066162] omap_device: omap_wdt.-1: new worst case activate latency 0:

30517
[    4.075958] OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec
[    4.082366] omap_device: omap_wdt.-1: new worst case deactivate latency

0: 30517
[    4.091033] oprofile: hardware counters not available
[    4.096374] oprofile: using timer interrupt.
[    4.101562] TCP cubic registered
[    4.105041] NET: Registered protocol family 17
[    4.110076] NET: Registered protocol family 15
[    4.114868] can: controller area network core (rev 20090105 abi 8)
[    4.121826] NET: Registered protocol family 29
[    4.126647] can: raw protocol (rev 20090105)
[    4.131164] can: broadcast manager protocol (rev 20090105 t)
[    4.137176] Registering the dns_resolver key type
[    4.142791] VFP support v0.3: implementor 41 architecture 3 part 30

variant c rev 1
[    4.153900] ThumbEE CPU extension supported.
[    4.173919] Power Management for TI OMAP3.
[    4.227050] clock: disabling unused clocks to save power
[    4.270935] Console: switching to colour frame buffer device 100x30
[    4.375213] bq32k 1-0068: setting system clock to 2013-01-07 19:53:55 UTC

(1357588435)
[    4.391967] UBIFS: read-only UBI device
[    4.396423] UBIFS error (pid 1): mount_ubifs: cannot mount read-write -

read-only media
[    4.409790] VFS: Cannot open root device "ubi0:rootfs-nand" or unknown-

block(0,0)
[    4.417694] Please append a correct "root=" boot option; here are the

available partitions:
[    4.426574] 1f00             512 mtdblock0  (driver?)
[    4.431945] 1f01            1792 mtdblock1  (driver?)
[    4.437225] 1f02             256 mtdblock2  (driver?)
[    4.442565] 1f03            5120 mtdblock3  (driver?)
[    4.447906] 1f04          254464 mtdblock4  (driver?)
[    4.453186] 1f05          243180 mtdblock5  (driver?)
[    4.458892] Kernel panic - not syncing: VFS: Unable to mount root fs on

unknown-block(0,0)
[    4.467590] [<c00a3678>] (unwind_backtrace+0x0/0xec) from [<c03914bc>]

(panic+0x54/0x180)
[    4.476104] [<c03914bc>] (panic+0x54/0x180) from [<c0009148>]

(mount_block_root+0x25c/0x2ac)
[    4.484954] [<c0009148>] (mount_block_root+0x25c/0x2ac) from [<c0009280>]

(prepare_namespace+0x88/0x1bc)
[    4.494842] [<c0009280>] (prepare_namespace+0x88/0x1bc) from [<c0008708>]

(kernel_init+0x10c/0x14c)
[    4.504302] [<c0008708>] (kernel_init+0x10c/0x14c) from [<c009e590>]

(kernel_thread_exit+0x0/0x8)

请问楼主你的问题解决了没有，我也有类似的问题，我是重新烧写内核后出现的这种问题