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Why my custom DM8148 board booting stops？

xu steven
Intellectual 500 points
Other Parts Discussed in Thread: TPS65910, PMP

Hi every one!

We have a custom dm8148 board , when the u-boot finish,  I kit any key to stop, and then use tftp download the kernel to memory, 

tftp 0x81000000 uImage-2.6.37

after download the kernel, use bootm to boot kernel

bootm 0x81000000

The kernel boot stop in "Uncompressing Linux... done, booting the kernel."

Any one knows why stop here?

following is boot log.

-------------------------------------------------------------------------------------------

U-Boot 2010.06 (Oct 10 2012 - 14:05:13)

TI8148-GP rev 2.1

ARM clk: 600MHz
DDR clk: 400MHz

I2C: ready
DRAM: 2 GiB
NAND: HW ECC BCH8 Selected
256 MiB
MMC: OMAP SD/MMC: 0
.:;rrr;;.
,5#@@@@#####@@@@@@#2,
,A@@@hi;;;r5;;;;r;rrSG@@@A,
r@@#i;:;s222hG;rrsrrrrrr;ri#@@r
:@@hr:r;SG3ssrr2r;rrsrsrsrsrr;rh@@:
B@H;;rr;3Hs;rrr;sr;;rrsrsrsrsrsr;;H@B
@@s:rrs;5#;;rrrr;r#@H:;;rrsrsrsrsrr:s@@
@@;;srs&X#9;r;r;;,2@@@rrr:;;rrsrsrsrr;;@@
@@;;rrsrrs@MB#@@@@@###@@@@@@#rsrsrsrsrr;;@@
G@r;rrsrsr;#X;SX25Ss#@@#M@#9H9rrsrsrsrsrs;r@G
@9:srsrsrs;2@;:;;:.X@@@@@H::;rrsrsrsrsrsrr:3@
X@;rrsrsrsrr;XAi;;:&@@#@Bs:rrsrsrsrsrsrsrsrr;@X
@#;rsrsrsrsrr;r2ir@@@###::rrsrsrsrsrsrsrsrsr:@@
@A:rrsrsrsrr;:2@29@@M@@@;:;rrrrsrsrsrsrsrsrs;H@
@&;rsrsrsrr;A@@@@@@###@@@s::;:;;rrsrsrsrsrsr;G@
@#:rrsrsrsr;G@5Hr25@@@#@@@#9XG9s:rrrrsrsrsrs:#@
M@;rsrsrsrs;r@&#;::S@@@@@@@M@@@@Grr:;rsrsrsr;@#
:@s;rsrsrsrr:M#Msrr;;&#@@@@@@@@@@H@@5;rsrsr;s@,
@@:rrsrsrsr;S@rrrsr;:;r3MH@@#@M5,S@@irrsrr:@@
@A:rrsrsrsrrrrrsrsrrr;::;@##@r:;rH@h;srr:H@
;@9:rrsrsrsrrrsrsrsrsr;,S@Hi@i:;s;MX;rr:h@;
r@B:rrrrsrsrsrsrsrr;;sA@#i,i@h;r;S5;r:H@r
,@@r;rrrsrsrsrsrr;2BM3r:;r:G@:rrr;;r@@,
B@Mr;rrrrsrsrsr@@S;;;rrr:5M;rr;rM@H
.@@@i;;rrrrsrs2i;rrrrr;r@M:;i@@@.
.A@@#5r;;;r;;;rrr;r:r#AsM@@H.
;&@@@@MhXS5i5SX9B@@@@G;
:ihM#@@@@@##hs,

Net: Detected MACID:0:17:eb:16:cd:16
cpsw
Hit any key to stop autoboot: 0
TI8148_EVM#tftp 0x81000000 uImage-2.6.37
link up on port 0, speed 1000, full duplex
Using cpsw device
TFTP from server 192.168.1.42; our IP address is 192.168.1.43
Filename 'uImage-2.6.37'.
Load address: 0x81000000
Loading: T #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
###########################
done
Bytes transferred = 2796420 (2aab84 hex)
TI8148_EVM#bootm 0x81000000
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Arago/2.6.37-psp04.04.00.01/dm81
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2796356 Bytes = 2.7 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

  • 0
    Expert 1745 points

    I was in the same position not long ago.  If you haven’t done so already, add these to your kernel args - they may provide some more info:

    earlyprintk debug ignore_loglevel log_buf_len=10M print_fatal_signals=1 LOGLEVEL=8

    At the very least, the earlyprintk will let you see the temporary printk's that you should be adding throughout the init function in your arch/arm/.../board-dm814x.c file to determine if one of the peripheral inits are fatal on your board (like pcie, or sata).

  • 0 in reply to Daniel70334
    Intellectual 500 points

    Hello 

    I resetting the kernel start command line, then the kernel can boot , but boot stop again.

    Any one knows why stop here?

    following is boot log.

    //--------------------------------------------------------------------------------------------------------------

    U-Boot 2010.06 (Oct 10 2012 - 14:08:25)

    TI8148-GP rev 2.1

    ARM clk: 600MHz
    DDR clk: 400MHz

    DRAM: 2 GiB
    NAND: HW ECC BCH8 Selected
    256 MiB
    Using default environment

    The 2nd stage U-Boot will now be auto-loaded
    Please do not interrupt the countdown till TI8148_EVM prompt if 2nd stage is already flashed
    Hit any key to stop autoboot: 0

    NAND read: device 0 offset 0x20000, size 0x40000
    262144 bytes read: OK
    ## Starting application at 0x81000000 ...


    U-Boot 2010.06 (Oct 10 2012 - 14:05:13)

    TI8148-GP rev 2.1

    ARM clk: 600MHz
    DDR clk: 400MHz

    I2C: ready
    DRAM: 2 GiB
    NAND: HW ECC BCH8 Selected
    256 MiB
    MMC: OMAP SD/MMC: 0
    .:;rrr;;.
    ,5#@@@@#####@@@@@@#2,
    ,A@@@hi;;;r5;;;;r;rrSG@@@A,
    r@@#i;:;s222hG;rrsrrrrrr;ri#@@r
    :@@hr:r;SG3ssrr2r;rrsrsrsrsrr;rh@@:
    B@H;;rr;3Hs;rrr;sr;;rrsrsrsrsrsr;;H@B
    @@s:rrs;5#;;rrrr;r#@H:;;rrsrsrsrsrr:s@@
    @@;;srs&X#9;r;r;;,2@@@rrr:;;rrsrsrsrr;;@@
    @@;;rrsrrs@MB#@@@@@###@@@@@@#rsrsrsrsrr;;@@
    G@r;rrsrsr;#X;SX25Ss#@@#M@#9H9rrsrsrsrsrs;r@G
    @9:srsrsrs;2@;:;;:.X@@@@@H::;rrsrsrsrsrsrr:3@
    X@;rrsrsrsrr;XAi;;:&@@#@Bs:rrsrsrsrsrsrsrsrr;@X
    @#;rsrsrsrsrr;r2ir@@@###::rrsrsrsrsrsrsrsrsr:@@
    @A:rrsrsrsrr;:2@29@@M@@@;:;rrrrsrsrsrsrsrsrs;H@
    @&;rsrsrsrr;A@@@@@@###@@@s::;:;;rrsrsrsrsrsr;G@
    @#:rrsrsrsr;G@5Hr25@@@#@@@#9XG9s:rrrrsrsrsrs:#@
    M@;rsrsrsrs;r@&#;::S@@@@@@@M@@@@Grr:;rsrsrsr;@#
    :@s;rsrsrsrr:M#Msrr;;&#@@@@@@@@@@H@@5;rsrsr;s@,
    @@:rrsrsrsr;S@rrrsr;:;r3MH@@#@M5,S@@irrsrr:@@
    @A:rrsrsrsrrrrrsrsrrr;::;@##@r:;rH@h;srr:H@
    ;@9:rrsrsrsrrrsrsrsrsr;,S@Hi@i:;s;MX;rr:h@;
    r@B:rrrrsrsrsrsrsrr;;sA@#i,i@h;r;S5;r:H@r
    ,@@r;rrrsrsrsrsrr;2BM3r:;r:G@:rrr;;r@@,
    B@Mr;rrrrsrsrsr@@S;;;rrr:5M;rr;rM@H
    .@@@i;;rrrrsrs2i;rrrrr;r@M:;i@@@.
    .A@@#5r;;;r;;;rrr;r:r#AsM@@H.
    ;&@@@@MhXS5i5SX9B@@@@G;
    :ihM#@@@@@##hs,

    Net: Detected MACID:0:17:eb:16:cd:16
    cpsw
    Hit any key to stop autoboot: 0
    link up on port 0, speed 1000, full duplex
    Using cpsw device
    TFTP from server 192.168.1.42; our IP address is 192.168.1.43
    Filename 'uImage'.
    Load address: 0x81000000
    Loading: T #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    ####################
    done
    Bytes transferred = 2428188 (250d1c hex)
    ## Booting kernel from Legacy Image at 81000000 ...
    Image Name: Linux-2.6.37
    Image Type: ARM Linux Kernel Image (uncompressed)
    Data Size: 2428124 Bytes = 2.3 MiB
    Load Address: 80008000
    Entry Point: 80008000
    Verifying Checksum ... OK
    Loading Kernel Image ... OK
    OK

    Starting kernel ...

    Uncompressing Linux... done, booting the kernel.
    Linux version 2.6.37 (jingfenxu@jingfenxu-machine) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #3 Sat Dec 29 21:26:45 CST 2012
    CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
    CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
    Machine: ti8148evm
    bootconsole [earlycon0] enabled
    vram size = 52428800 at 0x0
    reserved size = 52428800 at 0x0
    FB: Reserving 52428800 bytes SDRAM for VRAM
    Memory policy: ECC disabled, Data cache writeback
    OMAP chip is TI8148 2.1
    SRAM: Mapped pa 0x402f1000 to va 0xfe400000 size: 0xf000
    Built 1 zonelists in Zone order, mobility grouping on. Total pages: 52224
    Kernel command line: console=ttyO0,115200n8 rootdelay=4 rw mem=256M earlyprintk notifyk.vpssm3_sva=0xBF900000 vram=50M ti814xfb.vram=0:16M,1:16M,2:6M root=/dev/nfs nfsroot=192.168.1.45:/opt/targetfs rootwait rw ip=192.168.1.43 ip=192.168.1.43:192.168.1.45:192.168.1.1:255.255.255.0::eth0:off
    PID hash table entries: 1024 (order: 0, 4096 bytes)
    Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
    Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
    Memory: 206MB = 206MB total
    Memory: 203468k/203468k available, 58676k reserved, 0K highmem
    Virtual kernel memory layout:
    vector : 0xffff0000 - 0xffff1000 ( 4 kB)
    fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
    DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
    vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)
    lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
    pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
    modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
    .init : 0xc0008000 - 0xc0039000 ( 196 kB)
    .text : 0xc0039000 - 0xc0493000 (4456 kB)
    .data : 0xc0494000 - 0xc04d6080 ( 265 kB)
    SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
    NR_IRQS:375
    IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    Total of 128 interrupts on 1 active controller
    GPMC revision 6.0
    Trying to install interrupt handler for IRQ368
    Trying to install interrupt handler for IRQ369
    Trying to install interrupt handler for IRQ370
    Trying to install interrupt handler for IRQ371
    Trying to install interrupt handler for IRQ372
    Trying to install interrupt handler for IRQ373
    Trying to install interrupt handler for IRQ374
    Trying to install type control for IRQ375
    Trying to set irq flags for IRQ375
    OMAP clockevent source: GPTIMER1 at 20000000 Hz
    Console: colour dummy device 80x30
    Calibrating delay loop... 599.65 BogoMIPS (lpj=2998272)
    pid_max: default: 32768 minimum: 301
    Security Framework initialized
    Mount-cache hash table entries: 512
    CPU: Testing write buffer coherency: ok
    devtmpfs: initialized
    omap_voltage_early_init: voltage driver support not added
    regulator: core version 0.5
    regulator: dummy:
    NET: Registered protocol family 16
    omap_voltage_domain_lookup: Voltage driver init not yet happened.Faulting!
    omap_voltage_add_dev: VDD specified does not exist!
    OMAP GPIO hardware version 0.1
    OMAP GPIO hardware version 0.1
    OMAP GPIO hardware version 0.1
    OMAP GPIO hardware version 0.1
    omap_mux_init: Add partition: #1: core, flags: 4

    The kernel boot stop at here!



  • 0 in reply to xu steven
    Intellectual 500 points

    Hi all

    I try my best to let my board work, but I meet 2 question 

    1. The kernel boot stop at  "NOR: Can't request GPMC CS" , then wait for about 20 minutes, and continue.

    2. nfs mount failed

    following is boot log.

    //--------------------------------------------------------------------------------------------------------------

    U-Boot 2010.06 (Oct 10 2012 - 14:08:25)

    TI8148-GP rev 2.1

    ARM clk: 600MHz
    DDR clk: 400MHz

    DRAM: 2 GiB
    NAND: HW ECC BCH8 Selected
    256 MiB
    Using default environment

    The 2nd stage U-Boot will now be auto-loaded
    Please do not interrupt the countdown till TI8148_EVM prompt if 2nd stage is already flashed
    Hit any key to stop autoboot: 0

    NAND read: device 0 offset 0x20000, size 0x40000
    262144 bytes read: OK
    ## Starting application at 0x81000000 ...


    U-Boot 2010.06 (Oct 10 2012 - 14:05:13)

    TI8148-GP rev 2.1

    ARM clk: 600MHz
    DDR clk: 400MHz

    I2C: ready
    DRAM: 2 GiB
    NAND: HW ECC BCH8 Selected
    256 MiB
    MMC: OMAP SD/MMC: 0
    .:;rrr;;.
    ,5#@@@@#####@@@@@@#2,
    ,A@@@hi;;;r5;;;;r;rrSG@@@A,
    r@@#i;:;s222hG;rrsrrrrrr;ri#@@r
    :@@hr:r;SG3ssrr2r;rrsrsrsrsrr;rh@@:
    B@H;;rr;3Hs;rrr;sr;;rrsrsrsrsrsr;;H@B
    @@s:rrs;5#;;rrrr;r#@H:;;rrsrsrsrsrr:s@@
    @@;;srs&X#9;r;r;;,2@@@rrr:;;rrsrsrsrr;;@@
    @@;;rrsrrs@MB#@@@@@###@@@@@@#rsrsrsrsrr;;@@
    G@r;rrsrsr;#X;SX25Ss#@@#M@#9H9rrsrsrsrsrs;r@G
    @9:srsrsrs;2@;:;;:.X@@@@@H::;rrsrsrsrsrsrr:3@
    X@;rrsrsrsrr;XAi;;:&@@#@Bs:rrsrsrsrsrsrsrsrr;@X
    @#;rsrsrsrsrr;r2ir@@@###::rrsrsrsrsrsrsrsrsr:@@
    @A:rrsrsrsrr;:2@29@@M@@@;:;rrrrsrsrsrsrsrsrs;H@
    @&;rsrsrsrr;A@@@@@@###@@@s::;:;;rrsrsrsrsrsr;G@
    @#:rrsrsrsr;G@5Hr25@@@#@@@#9XG9s:rrrrsrsrsrs:#@
    M@;rsrsrsrs;r@&#;::S@@@@@@@M@@@@Grr:;rsrsrsr;@#
    :@s;rsrsrsrr:M#Msrr;;&#@@@@@@@@@@H@@5;rsrsr;s@,
    @@:rrsrsrsr;S@rrrsr;:;r3MH@@#@M5,S@@irrsrr:@@
    @A:rrsrsrsrrrrrsrsrrr;::;@##@r:;rH@h;srr:H@
    ;@9:rrsrsrsrrrsrsrsrsr;,S@Hi@i:;s;MX;rr:h@;
    r@B:rrrrsrsrsrsrsrr;;sA@#i,i@h;r;S5;r:H@r
    ,@@r;rrrsrsrsrsrr;2BM3r:;r:G@:rrr;;r@@,
    B@Mr;rrrrsrsrsr@@S;;;rrr:5M;rr;rM@H
    .@@@i;;rrrrsrs2i;rrrrr;r@M:;i@@@.
    .A@@#5r;;;r;;;rrr;r:r#AsM@@H.
    ;&@@@@MhXS5i5SX9B@@@@G;
    :ihM#@@@@@##hs,

    Net: Detected MACID:0:17:eb:16:cd:16
    cpsw
    Hit any key to stop autoboot: 0
    link up on port 0, speed 100, full duplex
    Using cpsw device
    TFTP from server 192.168.1.45; our IP address is 192.168.1.43
    Filename 'uImage'.
    Load address: 0x81000000
    Loading: #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    #################################################################
    ###########################
    done
    Bytes transferred = 2796420 (2aab84 hex)
    ## Booting kernel from Legacy Image at 81000000 ...
    Image Name: Arago/2.6.37-psp04.04.00.01/dm81
    Image Type: ARM Linux Kernel Image (uncompressed)
    Data Size: 2796356 Bytes = 2.7 MiB
    Load Address: 80008000
    Entry Point: 80008000
    Verifying Checksum ... OK
    Loading Kernel Image ... OK
    OK

    Starting kernel ...

    Uncompressing Linux... done, booting the kernel.
    Linux version 2.6.37 (x0029463@swubn01) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #1 Wed Oct 10 14:02:40 IST 2012
    CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
    CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
    Machine: ti8148evm
    bootconsole [earlycon0] enabled
    vram size = 52428800 at 0x0
    reserved size = 52428800 at 0x0
    FB: Reserving 52428800 bytes SDRAM for VRAM
    Memory policy: ECC disabled, Data cache writeback
    OMAP chip is TI8148 2.1
    SRAM: Mapped pa 0x402f1000 to va 0xfe400000 size: 0xf000
    Built 1 zonelists in Zone order, mobility grouping on. Total pages: 52224
    Kernel command line: console=ttyO0,115200n8 rootdelay=4 rw mem=256M earlyprintk notifyk.vpssm3_sva=0xBF900000 vram=50M ti814xfb.vram=0:16M,1:16M,2:6M root=/dev/nfs nfsroot=192.168.1.45:/opt/targetfs rootwait rw ip=192.168.1.43 ip=192.168.1.43:192.168.1.45:192.168.1.1:255.255.255.0::eth0:off ip=192.168.1.43:192.168.1.45:192.168.1.1:255.255.255.0::eth0:off
    PID hash table entries: 1024 (order: 0, 4096 bytes)
    Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
    Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
    Memory: 206MB = 206MB total
    Memory: 202680k/202680k available, 59464k reserved, 0K highmem
    Virtual kernel memory layout:
    vector : 0xffff0000 - 0xffff1000 ( 4 kB)
    fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
    DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
    vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB)
    lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
    pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
    modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
    .init : 0xc0008000 - 0xc003d000 ( 212 kB)
    .text : 0xc003d000 - 0xc0549000 (5168 kB)
    .data : 0xc054a000 - 0xc05970c0 ( 309 kB)
    SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
    NR_IRQS:407
    IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
    Total of 128 interrupts on 1 active controller
    GPMC revision 6.0
    Trying to install interrupt handler for IRQ400
    Trying to install interrupt handler for IRQ401
    Trying to install interrupt handler for IRQ402
    Trying to install interrupt handler for IRQ403
    Trying to install interrupt handler for IRQ404
    Trying to install interrupt handler for IRQ405
    Trying to install interrupt handler for IRQ406
    Trying to install type control for IRQ407
    Trying to set irq flags for IRQ407
    OMAP clockevent source: GPTIMER1 at 20000000 Hz
    Console: colour dummy device 80x30
    Calibrating delay loop... 598.01 BogoMIPS (lpj=2990080)
    pid_max: default: 32768 minimum: 301
    Security Framework initialized
    Mount-cache hash table entries: 512
    CPU: Testing write buffer coherency: ok
    devtmpfs: initialized
    omap_voltage_early_init: voltage driver support not added
    regulator: core version 0.5
    regulator: dummy:
    NET: Registered protocol family 16
    omap_voltage_domain_lookup: Voltage driver init not yet happened.Faulting!
    omap_voltage_add_dev: VDD specified does not exist!
    OMAP GPIO hardware version 0.1
    OMAP GPIO hardware version 0.1
    OMAP GPIO hardware version 0.1
    OMAP GPIO hardware version 0.1
    omap_mux_init: Add partition: #1: core, flags: 4
    NOR: Can't request GPMC CS 

    // at here,  wait for about 20 minuts, then continue, why? what is the kernel doing ? 

    Debugfs: Only enabling/disabling deep sleep and wakeup timer is supported now
    registered ti81xx_vpss device
    registered ti81xx_vidout device
    registered ti81xx on-chip HDMI device
    registered ti81xx_fb device
    registered ti81xx_vin device
    ti81xx_pcie: Invoking PCI BIOS...
    ti81xx_pcie: Setting up Host Controller...
    ti81xx_pcie: Register base mapped @0xd0820000
    ti81xx_pcie: Starting PCI scan...
    PCI: bus0: Fast back to back transfers enabled
    bio: create slab <bio-0> at 0
    vgaarb: loaded
    SCSI subsystem initialized
    usbcore: registered new interface driver usbfs
    usbcore: registered new interface driver hub
    usbcore: registered new device driver usb
    USBSS revision 4ea2080b
    registerd cppi-dma Intr @ IRQ 17
    Cppi41 Init Done
    omap_i2c omap_i2c.1: bus 1 rev4.0 at 100 kHz
    omap_i2c omap_i2c.1: controller timed out
    pcf857x: probe of 1-0021 failed with error -110
    omap_i2c omap_i2c.1: controller timed out
    tps65910 1-002d: read from reg 3f failed
    omap_i2c omap_i2c.1: controller timed out
    tps65910 1-002d: read from reg 1e failed
    set_machine_constraints: failed to enable VRTC
    tps65910 1-002d: failed to register tps65910-pmic regulator
    tps65910-pmic: probe of tps65910-pmic failed with error -110
    tps65910 1-002d: No interrupt support, no core IRQ
    omap_i2c omap_i2c.3: bus 3 rev4.0 at 100 kHz
    Advanced Linux Sound Architecture Driver Version 1.0.23.
    Switching to clocksource gp timer
    musb-hdrc: version 6.0, host, debug=0
    musb-hdrc musb-hdrc.0: dma type: dma-cppi41
    MUSB controller-0 revision 4ea20800
    musb-hdrc musb-hdrc.0: MUSB HDRC host driver
    musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 1
    usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
    usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    usb usb1: Product: MUSB HDRC host driver
    usb usb1: Manufacturer: Linux 2.6.37 musb-hcd
    usb usb1: SerialNumber: musb-hdrc.0
    hub 1-0:1.0: USB hub found
    hub 1-0:1.0: 1 port detected
    musb-hdrc musb-hdrc.0: USB Host mode controller at d081e000 using DMA, IRQ 18
    musb-hdrc musb-hdrc.1: dma type: dma-cppi41
    MUSB controller-1 revision 4ea20800
    musb-hdrc musb-hdrc.1: MUSB HDRC host driver
    musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 2
    usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
    usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
    usb usb2: Product: MUSB HDRC host driver
    usb usb2: Manufacturer: Linux 2.6.37 musb-hcd
    usb usb2: SerialNumber: musb-hdrc.1
    hub 2-0:1.0: USB hub found
    hub 2-0:1.0: 1 port detected
    musb-hdrc musb-hdrc.1: USB Host mode controller at d0826800 using DMA, IRQ 19
    NET: Registered protocol family 2
    IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
    TCP established hash table entries: 8192 (order: 4, 65536 bytes)
    TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
    TCP: Hash tables configured (established 8192 bind 8192)
    TCP reno registered
    UDP hash table entries: 256 (order: 0, 4096 bytes)
    UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
    NET: Registered protocol family 1
    RPC: Registered udp transport module.
    RPC: Registered tcp transport module.
    RPC: Registered tcp NFSv4.1 backchannel transport module.
    NetWinder Floating Point Emulator V0.97 (double precision)
    PMU: registered new PMU device of type 0
    omap-iommu omap-iommu.0: ducati registered
    omap-iommu omap-iommu.1: sys registered
    JFFS2 version 2.2. (NAND) 漏 2001-2006 Red Hat, Inc.
    msgmni has been set to 395
    io scheduler noop registered
    io scheduler deadline registered
    io scheduler cfq registered (default)
    Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
    omap_uart.0: ttyO0 at MMIO 0x48020000 (irq = 72) is a OMAP UART0
    console [ttyO0] enabled, bootconsole disabled
    console [ttyO0] enabled, bootconsole disabled
    omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
    omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
    omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
    omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
    omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
    brd: module loaded
    loop: module loaded
    ahci ahci.0: forcing PORTS_IMPL to 0x1
    ahci ahci.0: AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl platform mode
    ahci ahci.0: flags: ncq sntf pm led clo only pmp pio slum part ccc apst
    scsi0 : ahci_platform
    ata1: SATA max UDMA/133 mmio [mem 0x4a140000-0x4a150fff] port 0x100 irq 16
    omap2-nand driver initializing
    NAND device: Manufacturer ID: 0x2c, Chip ID: 0xca (Micron )
    Creating 6 MTD partitions on "omap2-nand.0":
    0x000000000000-0x000000020000 : "U-Boot-min"
    0x000000020000-0x000000260000 : "U-Boot"
    0x000000260000-0x000000280000 : "U-Boot Env"
    0x000000280000-0x0000006c0000 : "Kernel"
    0x0000006c0000-0x00000cee0000 : "File System"
    0x00000cee0000-0x000010000000 : "Reserved"
    davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
    davinci_mdio davinci_mdio.0: detected phy mask fffffffc
    davinci_mdio.0: probed
    davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver unknown
    davinci_mdio davinci_mdio.0: phy[1]: device 0:01, driver unknown
    CAN device driver interface
    CAN bus driver for Bosch D_CAN controller 1.0
    d_can d_can: d_can device registered (irq=52, irq_obj=53)
    usbcore: registered new interface driver cdc_ether
    usbcore: registered new interface driver dm9601
    usbcore: registered new interface driver cdc_acm
    cdc_acm: v0.26:USB Abstract Control Model driver for USB modems and ISDN adapters
    Initializing USB Mass Storage driver...
    usbcore: registered new interface driver usb-storage
    USB Mass Storage support registered.
    mice: PS/2 mouse device common for all mice
    ata1: SATA link down (SStatus 0 SControl 300)
    omap_i2c omap_i2c.1: controller timed out
    qt602240_ts 1-004a: __qt602240_read_reg: i2c transfer failed
    qt602240_ts: probe of 1-004a failed with error -5
    omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
    i2c /dev entries driver
    Linux video capture interface: v2.00
    usbcore: registered new interface driver uvcvideo
    USB Video Class driver (v1.0.0)
    OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
    usbcore: registered new interface driver usbhid
    usbhid: USB HID core driver
    notify_init : notify drivercreated for remote proc id 2 at physical Address 0xbf900000
    usbcore: registered new interface driver snd-usb-audio
    asoc: tlv320aic3x-hifi <-> davinci-mcasp.2 mapping ok
    ALSA device list:
    #0: TI81XX EVM
    nf_conntrack version 0.5.0 (3166 buckets, 12664 max)
    ip_tables: (C) 2000-2006 Netfilter Core Team
    TCP cubic registered
    NET: Registered protocol family 17
    can: controller area network core (rev 20090105 abi 8)
    NET: Registered protocol family 29
    can: raw protocol (rev 20090105)
    can: broadcast manager protocol (rev 20090105 t)
    Registering the dns_resolver key type
    VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
    omap_voltage_late_init: Voltage driver support not added
    Power Management for TI81XX.
    Detected MACID=0:17:eb:16:cd:16
    omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)

    CPSW phy found : id is : 0x4dd074

    CPSW phy found : id is : 0x4dd074
    IP-Config: Complete:
    device=eth0, addr=192.168.1.43, mask=255.255.255.0, gw=192.168.1.1,
    host=192.168.1.43, domain=, nis-domain=(none),
    bootserver=192.168.1.45, rootserver=192.168.1.45, rootpath=
    Waiting 4sec before mounting root device...
    PHY: 0:01 - Link is Up - 0/Half
    PHY: 0:01 - Link is Down
    PHY: 0:00 - Link is Up - 100/Full
    VFS: Unable to mount root fs via NFS, trying floppy.
    VFS: Cannot open root device "nfs" or unknown-block(2,0)
    Please append a correct "root=" boot option; here are the available partitions:
    1f00 128 mtdblock0 (driver?)
    1f01 2304 mtdblock1 (driver?)
    1f02 128 mtdblock2 (driver?)
    1f03 4352 mtdblock3 (driver?)
    1f04 204928 mtdblock4 (driver?)
    1f05 50304 mtdblock5 (driver?)
    Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
    Backtrace:
    [<c004bbd0>] (dump_backtrace+0x0/0x110) from [<c03ef4d8>] (dump_stack+0x18/0x1c)
    r7:ccbb8000 r6:00000000 r5:c002fe4c r4:c0597910
    [<c03ef4c0>] (dump_stack+0x0/0x1c) from [<c03ef53c>] (panic+0x60/0x17c)
    [<c03ef4dc>] (panic+0x0/0x17c) from [<c00092b4>] (mount_block_root+0x1e0/0x220)
    r3:00000000 r2:00000000 r1:cc82bf58 r0:c04c258c
    [<c00090d4>] (mount_block_root+0x0/0x220) from [<c00093a0>] (mount_root+0xac/0xcc)
    [<c00092f4>] (mount_root+0x0/0xcc) from [<c0009530>] (prepare_namespace+0x170/0x1d4)
    r4:c0597124
    [<c00093c0>] (prepare_namespace+0x0/0x1d4) from [<c00087c4>] (kernel_init+0x114/0x154)
    r5:c00086b0 r4:c05970c0
    [<c00086b0>] (kernel_init+0x0/0x154) from [<c0073940>] (do_exit+0x0/0x5e4)
    r5:c00086b0 r4:00000000

    // my nfs server is work good, I test in other machine