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Not able to boot pandaboard properly from sd card with openwrt images

sukul kuls
Prodigy 30 points

I am working on openwrt with Pandaboard (OMAP4430) and have build the images for the pandaboard.

I want to boot pandaboard from sd card , so I made 2 partition in sd card one is /boot and other /rfs and have copied following images:
MLO,  u-boot.img , omap4-panda.dtb , openwrt-omap-zImage  in /boot partition
untar the openwrt-omap-Default-rootfs.tar.gz in /rfs partition.

Now when I plugin my sd card in board  its not able to boot properly and showing repetitive messages:

OMAP4430 ES2.1                                                                 
Bypassing DPLL failed 4a008180                                                 
reading u-boot.img                                                             
reading u-boot.img                                                             
                                                                               
U-Boot SPL 2013.10 (Oct 15 20!5 - 13:11819)                                   
OMAP4430 ES2.1                                                                 
Bypassing DPLL failed 4a008180                                                 
reading u-boot.img                                                             
reading u-boot.img                                                             
                                                                               
U-Boot SPL 2013.10 (Oct 15 2015 - 13:11:19)                                   
OMAP4430 ES2.1                                                                 
Bypassing DPLL failed 4a008180                                                 
reading u-boot.img                                                             
reading u-boot.img                                                             
                                                                               
Please help me to solve the problem.
Or if someone can tell the procedure how to boot with openwrt images from sd card for the panda board  as I am new and doing first time.

  • 0
    TI__Guru** 116100 points
    Dear Sukul,
    It seems you are able to MLO and stuck up with u-boot.
    Able to boot with pre-build binaries ?

    www.svtronics.com/.../
    www.crashcourse.ca/.../PandaBoard_ES
    eewiki.net/.../PandaBoard
  • 0 in reply to Titusrathinaraj Stalin
    Prodigy 30 points

    Hi Stalin,

    Thanks for the reply.

    I was able to get the uboot but it got stooped by showing the following message :

    U-Boot 2013.10 (Oct 15 2015 - 13:11:19)
                                            
    CPU  : OMAP4430 ES2.1                   
    Board: OMAP4 Panda
    I2C:   ready
    DRAM:  1 GiB
    MMC:   OMAP SD/MMC: 0                                                          
    Using default environment                                                      
                                                                                   
    In:    serial                                                                  
    Out:   serial                                                                  
    Err:   serial                                                                  
    Net:   No ethernet found.                                                      
    Hit any key to stop autoboot:  0                                               
    mmc0 is current device                                                         
    SD/MMC found on device 0                                                       
    reading boot.scr                                                               
    ** Unable to read file boot.scr **                                             
    reading uEnv.txt                                                               
    ** Unable to read file uEnv.txt **                                             
    ** File not found /boot/zImage **                                              
    Panda #

    There was no uEnv.txt and boot.scr with openwrt images ,as might be because we want default configurations and don't want to change.

    The zImage I have copied in sd card boot partition as I mentioned in previous message.

    I am not getting why its not taking that zImage.

    Also one more problem I am facing is that  my console(using minicom) for pandaboard is not taking proper characters in uboot as when I type printenv command it shows like this:

    Panda # pr�ltend

    Is my method correct to boot pandabord with openwrt images using sd card(by creating 2 partition boot and rfs),or we have to do some other way?

    Will be thankful if help can be provided for the same.

  • 0 in reply to sukul kuls
    TI__Guru** 116100 points
    Dear Sukul,


    reading uEnv.txt
    ** Unable to read file uEnv.txt **
    ** File not found /boot/zImage **
    Panda #

    The zImage I have copied in sd card boot partition as I mentioned in previous message.


    Copy the zImage into boot folder of rootfs partition.

    You could see "boot" folder in filesystem partition.
  • 0 in reply to Titusrathinaraj Stalin
    Prodigy 30 points

    Hi Stalin ,

    In my root filesystem there was no boot folder .

    Following were the folder in my openwrt-omap-Default-rootfs :

    bin  etc  mnt      proc  root  sys  usr  www
    dev  lib  overlay  rom   sbin  tmp  var

    So I thought of creating one boot folder and copied zImage ,dtb file in that folder and tried booting from sd card ,but then also same message came.

    reading uEnv.txt
    ** Unable to read file uEnv.txt **
    ** File not found /boot/zImage **
    Panda #

  • 0 in reply to sukul kuls
    TI__Guru** 116100 points
    Dear Sukul,

    Please use the following u-boot env variables to boot from MMC.

    Type the following commands in u-boot shell and boot.

    u-boot# setenv bootargs console=ttyO2,115200n8 root=/dev/mmcblk0p2 rootwait rw vram=16M ip=none

    For uImage:
    u-boot# setenv bootcmd 'mmc rescan;fatload mmc 0 0x82000000 uImage;bootm 0x82000000'

    For zImage:
    u-boot# setenv bootcmd 'mmc rescan;fatload mmc 0 0x82000000 zImage;bootm 0x82000000'

    u-boot# saveenv
    u-boot# boot


    Please refer to the following useful links...

    elinux.org/Panda_How_to_MLO_&_u-boot
    elinux.org/PandaBoard_ES_uboot_howto
    pandaboard.org/.../getting-started
    pandaboard.org/.../
    elinux.org/PandaBoard