Re: Flash programming with rtl8139

Donald Becker wrote:
> On Thu, 14 Aug 2003, Markus Schlotterer wrote:
> 
> 
>>I tried to flash an AMD Am29F010B flash rom using a noname NIC with 
>>RTL8139C chip. The tool provided bei Realtek (rtflash.exe) didn't work 
>>because the AMD flash is not know.
>>Then I tried the rtl8139-diag tool. At first it didn't even recognize 
>>the chips ids correctly. Then I found a patch by Mikkel Lauritsen 
>>(http://www.scyld.com/pipermail/realtek/2001-August/001070.html) and 
>>after applying this patch, everything worked correctly.
> 
> 
> What part of the patch did you apply?
> The first part, using register 0xD4 instead of 0x54, was added in
> rtl8139-diag.c for v2.5 of January 2002.  The 0x54 value is only correct
> for the original chips, but it seems that few boards with old chips have flash
> sockets so I didn't bother selecting the register offset based on chip
> version.
> 
> Did you also need the other part of that patch, which does some extra
> toggling of the chip select bits?  If so, let me know.  This might be
> Flash-chip-specific, but the only way to know for certain is to see who
> else complains.
> 

The usage of register 0xD4 is already in the current version of 
rtl8139-diag.c. But i also needed the part with toggling of the chip 
select bits.
In the AMD data sheet it is written: "To write a command or command 
sequence the system must drive WE# and CE# to VIL, and OE# to VIH." The 
data sheet can be found at 
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/22336c1.pdf