Re: [flashrom] Atmel AT49F002NT-90PC - Erase OK - Write FAIL

[Stefan Tauner]

On Mon, 17 Oct 2011 19:25:47 -0200
Marcos Felipe Rasia de Mello  wrote:
> Tested using hot swap in this board
> http://www.flashrom.org/pipermail/flashrom/2011-September/007986.html
> already reported.
>
> Erase works (I compared the chip content before and after), but the
> write process fails. I can easily test if you need, because I have a
> backup BIOS chip.

hi and thanks for your report!

to me it looks like erase is also failing. your -VE log shows:
> Erasing and writing flash chip... Trying erase function 0... 0x000000-0x01ffff:E, 0x020000-0x037fff:E, 0x038000-0x039fff:E, 0x03a000-0x03bfff:EERASE FAILED at 0x0003a705! Expected=0xff, Read=0xfd, failed byte count from 0x0003a000-0x0003bfff: 0x39
> ERASE FAILED!
> Reading current flash chip contents... done. Looking for another erase function.
> Trying erase function 1... 0x000000-0x03ffff:EERASE FAILED at 0x0003a737! Expected=0xff, Read=0xfe, failed byte count from 0x00000000-0x0003ffff: 0x1b
> ERASE FAILED!
> Looking for another erase function.
> No usable erase functions left.
> FAILED!

then writing will fail too of course...

Atmel AT49F002NT-90PC - Erase OK - Write FAIL

[Marcos Felipe Rasia de Mello]

2011/10/17 Stefan Tauner :
> hi and thanks for your report!
>
> to me it looks like erase is also failing. your -VE log shows:
> > Erasing and writing flash chip... Trying erase function 0... 0x000000-0x01ffff:E, 0x020000-0x037fff:E, 0x038000-0x039fff:E, 0x03a000-0x03bfff:EERASE FAILED at 0x0003a705! Expected=0xff, Read=0xfd, failed byte count from 0x0003a000-0x0003bfff: 0x39
> > ERASE FAILED!
> > Reading current flash chip contents... done. Looking for another erase function.
> > Trying erase function 1... 0x000000-0x03ffff:EERASE FAILED at 0x0003a737! Expected=0xff, Read=0xfe, failed byte count from 0x00000000-0x0003ffff: 0x1b
> > ERASE FAILED!
> > Looking for another erase function.
> > No usable erase functions left.
> > FAILED!
>
> then writing will fail too of course...

Sorry, I didn't notice that. It's strange, because I ran the following
sequence: flashrom -r before.bin, flashrom -VE, flashrom -r after.bin.
The chip had a previous BIOS from another board (before.bin) and after
flashrom -VE the file after.bin is empty. I checked both in a hex
editor.

Marcos