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Boot from nandflash in 6437

Dear:

Recently, i am working on the nand boot task.

1 The bootloader version of my 6437 is 1.3, so, i should boot from nand directly.

2 I have used the DM643x tools to convert the test.out file to AIS format.

3 I write the AIS format file to nand flash in block 1. The three words that define the starting block and number of pages is also written.

4 the boot mode is non fast, nand flash.

I have finished all the above step, but the nand boot failed. Because the function of test.out is open and close a light. But there is no change.

 

Can anyone give me some advise?