/dev/bios for 2.6

Richard Smith rsmith at bitworks.com
Tue Feb 10 10:50:00 CET 2004

Eric W. Biederman wrote:

> If you look in jedec_probe.c AM29F040, and AM29LV040B are supported so if
> it is not it should be just a tiny tweak to jedec probe to get the chip
> recognized.

Ah.. jdec_probe ok well that gives me a place to start.  I'll go see if 
I can tweak that to find a AM29F040B.  I would have though that the 
AM29F040 id would have matched.
>>The MTD 
>>webpage dosen't have any info and I build and inserted lots of different mtd
>>modules but nothing indicated they did anything.
> Do you have a proper map driver?

Er... I don't know.  How do I check?

I've not found any documentation explaining anything about useing the 
MTD with BIOS type flash chips.  Its all Msystems or CF stuff so I've 
just been guessing.

My chip is hanging out just like a normal BIOS chip would at physical 
address 0xfff80000 - 0xffffffff.  The 1Meg extended BIOS space area 
should be enabled in my chipset.  So BIOS chipselects should be 
generated for 0xfff0ffff up.
There was an option in the kernel building that asked for a start 
address and a size to which I entered 0xfff80000 and 0x80000.

Hmmm... come to think about it now I may have entered 0x80000 rather 
than 0xfff80000 as the start address..

In any case.. given my setup what and where do I config this?

Richard A. Smith
rsmith at bitworks.com

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