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AM6412: Custom U-boot Variable creation

Part Number: AM6412


Hi Experts,

i am using am6412 evm and i need to add a custom variable in u-boot source,for that i  need some help,what are the steps to add a custom variable in u-boot?

Please share some procedure

Steps i had tired so far i have modified the include/configs/am64x_evm.h in this file i have added my variables under this macro EXTRA_ENV_AM642_BOARD_SETTINGS_MMC ,but it not reflected in u-boot. By using printenv command i am not able to find my custom variable.the error is like "not defined".

can anyone help me to overcome this issue?