[LinuxBIOS] [PATCH] ST M29F040B flash_and_burn driver

Fredrik Tolf fredrik at dolda2000.com
Thu Aug 24 02:09:05 CEST 2006

On Wed, 2006-08-23 at 18:52 -0500, Richard Smith wrote:
> On 8/23/06, Fredrik Tolf <fredrik at dolda2000.com> wrote:
> > I bought a M29F040B 4 Mib flash chip for my EPIA-V motherboard today in
> > order to get LinuxBIOS on it, and found that flash_and_burn didn't
> > support it. So, I got the datasheet and modified a copy of the M29F400BT
> > driver to work with it.
> How is this part different from the am29f040b?  The programming
> sequences look mostly the same.

Mostly, indeed. There are a couple of differences, though, the most
important being that the address sequence as 555, 2AA, 555 instead of
AAA, 555, AAA. Then there are a couple of other differences as well,
such as when reading the product code, and the fact that the block
layout is uniform. There may have been some other things as well, but I
don't quite remember.

Fredrik Tolf

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