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Linux/TDA2EXEVM: on Tda2ex evm dual images loading from userspace

veera anjaneyulu
Expert 1920 points
Part Number: TDA2EXEVM

Tool/software: Linux

Hi All,

1.We are using vision sdk 2.12 version and linux kernel version 4.4.23 and u-boot version 2015-06.

2.we built u-boot u-boot tools fw_printenv and fw_saveenv.

3.By using fw_setenv we are trying to load images from userspace.

4.fw_setenv fatload mmc 0 ${load addr} zImage_2====> is it possible to load

fw_setenv fatload mmc 0 ${load addr} dra72-evm-infoadas_2.dtb

5. bootargs are updated in fw_printenv but we unable to load second kernel image.

But we are not getting secondary image kernel logs reason why?

Please guide me any body suceeded.

Thanks

veera

  • 0
    TI__Mastermind 42515 points
    Hi Veera,

    the first thing I notice is that you load the kernel image and the DTB on the same address (that is ${load addr}).

    Can you show the output of the command fw_printenv before doing any modification with fw_setenv?

    After you run some fw_setenv commands can you try to stop at U-boot prompt and check with printenv command that the env variables was modified?

    Regards,
    Yordan