[LinuxBIOS] RD1-PL on EPIA-M10000 problem

hi can someone confirm that i have the following correct?

i have an EPIA-M m/board with an SST39SF020A bios chip, along with an RD1-PL 2Mbit bios savour, are these both 2Mb chips? i have tried writing the RD1 with a image file, but it always fails :( anyone any pointers?

have so far tried to write image aprox 8 times, still with no luck :(
this is the output from flashrom :-
Original BIOS
# ./flashrom
Calibrating delay loop... ok
No LinuxBIOS table found.
Enabling flash write on VT8235...tried to set 0x45 to 0x55 on VT8235 failed (WARNING ONLY)
SST39SF020A found at physical address: 0xfffc0000
Flash part is SST39SF020A
OK, only ENABLING flash write, but NOT FLASHING.

RD1-PL BIOS
# ./flashrom
Calibrating delay loop... ok
No LinuxBIOS table found.
Enabling flash write on VT8235...OK
W49F002U found at physical address: 0xfffc0000
Flash part is W49F002U
OK, only ENABLING flash write, but NOT FLASHING.

as far as i can tell both are 2M bios, is htere something that prevent writing to the differant chip number properly?

PS. this bios savour worked fine on my EPIA-PD board, always writing corectly first time :(

Many thanks in advance

Matt

[Richard Smith]

On 8/8/06, [e-mail]  wrote:
> hi can someone confirm that i have the following correct?
>
> i have an EPIA-M m/board with an SST39SF020A bios chip, along with an RD1-PL 2Mbit bios savour, are these both 2Mb chips?

Looking at the datasheets they are both 2Mbit parts and both are 5V
program.  So they should be equivilent.

i have tried writing the RD1 with a image file, but it always fails
:( anyone any pointers?
> have so far tried to write image aprox 8 times, still with no luck :(
> Original BIOS
> Enabling flash write on VT8235...tried to set 0x45 to 0x55 on VT8235 failed (WARNING ONLY)

What's up here?  Has the factory bios set some lock so you can't
enable bit 4?  What does that bit do?
> as far as i can tell both are 2M bios, is htere something that prevent writing to the differant chip > number properly?

You IDed both parts correctly which means that writes to flash seem to
be happening.  Can you read the parts ok?
If so then you might try flashing in your LinuxBIOS image and then
read the image back from the part to see if it wrote anything close to
what you expected where you expected.

[Richard Smith]

On 8/8/06, [e-mail]  wrote:
> hi can someone confirm that i have the following correct?

Please adjust your MTA so that we don't get a failure everytime someone does a
"reply to all"  [e-mail] isn't valid.

[Stefan Reinauer]

* [e-mail]  [060809 01:49]:
> i have an EPIA-M m/board with an SST39SF020A bios chip, along with an
>  RD1-PL 2Mbit bios savour, are these both 2Mb chips? i have tried
>  writing the RD1 with a image file, but it always fails :( anyone any
>  pointers?
>
> have so far tried to write image aprox 8 times, still with no luck :(
> this is the output from flashrom :-

Have you tried to write it and read it back?
I get the same error
> Enabling flash write on VT8235...tried to set 0x45 to 0x55 on VT8235 failed (WARNING ONLY)

ocassionally, but writing works fine.

Stefan

[Ben Hewson]

I had alot of problems with the RD1 bios savior on my EPIA5000 board. I
lost track of the times I tried to flash it, it certainly seemed alot
more than 10 times. In the end I wrote a small script to just sit there
and try and flash the RD1 bios until it verified. It actually worked on
the 5th attempt. I now have the original bios in the RD1 flash and am
using the on-board flash for linuxbios (although it does not boot yet).
The on-board flash, programs first time. There is a note on the
Linuxbios web site about the RD1 bios savior and the fact that it
doesn't program very well. Of course the EPIA-M has a different chipset
so there may be other problems, but I suspect it is just down to the
flash on the RD1.

Ben
> [e-mail]  [060809 01:49]:
> > i have an EPIA-M m/board with an SST39SF020A bios chip, along with an
> >  RD1-PL 2Mbit bios savour, are these both 2Mb chips? i have tried
> >  writing the RD1 with a image file, but it always fails :( anyone any
> >  pointers?
> >
> > have so far tried to write image aprox 8 times, still with no luck :(
> > this is the output from flashrom :-
>
> Have you tried to write it and read it back?
> I get the same error
> > Enabling flash write on VT8235...tried to set 0x45 to 0x55 on VT8235 failed (WARNING ONLY)
>
> ocassionally, but writing works fine.
>
> Stefan