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I cannot flash the NOR-flash by CCS and sfh_DM644x on my DM6446 EVM

Hi, TI expert

I use CCS3.3 to flash the NOR-flash on my DM6446 EVM, but it does fail.

The information printed by CCS3.3 is :

Starting DM644x_NORWriter.
CFI Query...passed.
NOR Initialization:
 Command Set: Intel
 Manufacturer: INTEL
 Size: 0x10 MB
Does your u-boot version require a UBL in the NOR flash (Y/N)?
n
Enter the U-boot or application file name (enter 'none' to skip):
F:\CCS_u-boot\u-boot.bin
Erasing the NOR Flash
Erased through 0x2020000
Erase Completed
Writing the NOR Flash

Buffered write failed. Trying normal write

Normal write also failed
NOR Write Failed...Aborting!
 ERROR: Writing NOR failed.
 NOR flashing failed!

The file I use are "NORWriter.out" and "u-boot.bin". And I add the "davincievm_arm.gel" into CCS3.3.

It always fails, and I don't know why?

 

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It also prompt that:


Buffered write failed. Trying normal write


Normal write also failed
NOR Write Failed...Aborting!

 

I also use "sfh_DM644x.exe" to flash u-boot, and it also do fail.

The sfh_DM644x.exe can erase the NOR-flash, but it cannot write.

 

I need your help. Thanks!