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How to switch from booting from SD card to booting from nfs...??

KB62330
Prodigy 190 points

I can't find anything that tells me how I can switch the SW4 switch on the OMAP EVM board,

and If i need to do anything else to be able to boot from NFS again.

 

I'm feeling pretty dumb, but just cannot seem to figure out how to change bootup..

 

thanks,

KB

  • 0
    Prodigy 190 points

    I think I figured it out..

    I built u-boot.bin, and uImage (default config) using http://software-dl.ti.com/dsps/dsps_public_sw/psp/LinuxPSP/OMAP_03_00/03_00_01_06/index_FDS.html)

    copied u-boot.bin and uImage to /tftpboot

    somehow got my OMAP3_EVM # on minicom..

    did the following at that prompt:

    OMAP3_EVM # mw.b 0x80000000 0xFF 0x100000
    OMAP3_EVM # tftp 0x80000000 u-boot.bin
    OMAP3_EVM # nand erase 0x80000 0x1C0000
    OMAP3_EVM # nandecc sw
    OMAP3_EVM # nand write.i 0x80000000 0x80000 0x1C0000

    powered off the EVM

    then changed SW4 switches to boot from NAND:  bits [8..1] = 00001010

    ..... could someone please let me know if this is the correct way to do this?

    and how do i build the file system?  i built uImage and u-boot.bin, but have no idea how

    to build the filesystem...

     

    thanks,

     

    kb

  • 0 in reply to KB62330
    Expert 2800 points

    KB,

    The DIP switch SW4 on the OMAP3 EVM main board determines the location from where x-loader and u-boot binaries are loaded for execution. The loading of uImage and filesystem is depending upon the settings in the u-boot (bootcmd, bootargs,.. u-boot parameters).

    If we use http://software-dl.ti.com/dsps/dsps_public_sw/psp/LinuxPSP/OMAP_03_00/03_00_01_06/index_FDS.html, we will go to the "user guide" and find instructions in http://processors.wiki.ti.com/index.php/AM35x-OMAP35x-PSP_03.00.00.05_UserGuide#Booting_Linux_Kernel.


    You may want to post queries on the omap35x forum to get support for building the file system for the omap3 evm.

    Thanks,

    Sinoj

     

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