flash_rom on SST49LF004B tips?

YhLu YhLu at tyan.com
Wed Nov 3 12:54:01 CET 2004

That should be kernel 2.6 bug under 64bit: the last 4k near 4G can not be
accessed when 4G RAM installed.



-----Original Message-----
From: Li-Ta Lo [mailto:ollie at lanl.gov] 
Sent: Wednesday, November 03, 2004 9:10 AM
To: Ronald G. Minnich
Cc: Donald Zoch; Hendricks David W.; LinuxBIOS
Subject: Re: flash_rom on SST49LF004B tips?

On Wed, 2004-11-03 at 09:53, Ronald G. Minnich wrote:
> On Mon, 1 Nov 2004, Donald Zoch wrote:
> > I'm trying to get the flash_rom program working on the SST49LF004B.
> > This is the part that is coming in our newer Arima HDAMA boards that
> > replaces the SST49LF040.   It has the same id as the SST49LF004A,
> > but is different in that when we first started trying to flash it, the
> > flash looked like it worked but would never verify.   I took a look
> > at the data sheet and from the looks of it there are these block locking
> > registers that the zero bit must be cleared in in order to write to
> > certain parts of the flash.  At least that's why I think it's not
> > flashing.   
> I did a part like that already, the sst 49lf008a. 
> Look in flash_rom. It works fine.

BTW, there is some unknown proble to flash some SST flash in 64-bit
mode. I have no idea why. It works perfectly in 32-bit mode.


> ron

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