Hello, I have a board with flash part S71WS256N. I was using CFI driver and didn't had any problems programming the device. But from today I am getting an unusual error while writing to flash sectors. It always gives erase successful. But when I try to write data after erase, I get a message that the flash is not erased. I use uboot-1.2. Below is the debug message on running saveenv. Could someone help me to resolve this problem.
Saving Environment to Flash... Protect off A0060000 ... A007FFFF Un-Protecting sectors 6..6 in bank 1 fwc addr a0060000 cmd 50 0050 16bit x 16 bit fwc addr a0060000 cmd 60 0060 16bit x 16 bit fwc addr a0060000 cmd d0 00d0 16bit x 16 bit flash_is_busy: 0 . done Un-Protected 1 sectors Erasing Flash...Erase Flash from 0xa0060000 to 0xa007ffff in Bank # 1 fwc addr a0060aaa cmd aa 00aa 16bit x 16 bit fwc addr a0060554 cmd 55 0055 16bit x 16 bit fwc addr a0060aaa cmd 80 0080 16bit x 16 bit fwc addr a0060aaa cmd aa 00aa 16bit x 16 bit fwc addr a0060554 cmd 55 0055 16bit x 16 bit fwc addr a0060000 cmd 30 0030 16bit x 16 bit flash_is_busy: 0 done Erased 1 sectors Writing to Flash... Flash not Erased Protecting sectors 6..6 in bank 1 fwc addr a0060000 cmd 50 0050 16bit x 16 bit fwc addr a0060000 cmd 60 0060 16bit x 16 bit fwc addr a0060000 cmd 1 0001 16bit x 16 bit flash_is_busy: 0 . done Protected 1 sectors
Thanks, Shiju