[U-Boot-Users] Flash Erase/Write error in uboot

Tolunay Orkun listmember at orkun.us
Thu May 3 01:10:19 CEST 2007

Shiju Mathew wrote:
> On Wed, 2007-02-05 at 02:29 +0200, Wolfgang Denk wrote:
>> In message <f3cea0230705011722q2a88618bg371fdd67eeed18c8 at mail.gmail.com> you wrote:
>>> 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.
>> Is it correct to assume that this is just on one board? Seems your
>> flash died. This happens.
> The flash is not dead. I could flash uboot using RVI debugger without
> any problem. Basically I load two uboot images onto RAM using RVI- one
> to run from RAM and writes the second image to flash. This is always
> succussfull. ONce the uboot is written to flash, and reboot the board, I
> get the error that the "flash is not errased". 
> Today I tested with the top-of-git version. Still have the same problem.
> Anyone have experienced this problem before.
> Thanks,
> Shiju
Does this happen with DEBUG enabled? Did you check with DEBUG disabled? 
I noticed that DEBUG distrupts some of the registers used for status 

If you have to have DEBUG enabled for testing something else please put 
#undef DEBUG towards the beginning of cfi_flash.c (after #include etc)



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