CCS/TMS570LC4357: Relationship between flash ecc self test function and pinmux

Tool/software: Code Composer Studio

hello

For the BSP works, i try to change pinmux and generate pinmux code using HalCoGen.

however, this edited pinmux.c file causes Flash ECC Self test fail.

i cannot figure out why is this happened.

could you please teach me how pinmux changes can influence to flash ecc test?

thanks