Flashrom problems on VIA EPIA CN13000G

[劉正強]

Hi all !

I have an VIA EPIA CN13000G board , and bought five SST49LF008A chips
from internet.
Now Trying to flash these chips, but i got this result:

# ./flashrom
  Calibrating delay loop... ok
  No LinuxBIOS table found.
  Found chipset "VT8237": Enabling flash write... OK.
  Found board "VIA EPIA-CN": Enabling flash write... OK.
  No EEPROM/flash device found.

Also i tried to flash original BIOS rom (SST49LF004B), it work fine
(read/write).
So what did i miss? Could someone tell me what to do ?

[Peter Stuge]

Hi,

?B???j wrote:
> I have an VIA EPIA CN13000G board , and bought five SST49LF008A
> chips from internet.

I'm afraid those chips can not work on that board.
> No EEPROM/flash device found.
>
> Also i tried to flash original BIOS rom (SST49LF004B), it work fine
> (read/write).
> So what did i miss? Could someone tell me what to do ?

I believe your original chip is SST49LF040B, not 004B. 004B and 008A
understand only Firmware commands (they are FWH-compatible) while
040B and 080A respond to "LPC Memory Read" commands and are called
LPC chips.

I suggest trying to find SST49LF080A-33-4C-NHE chips instead.

//Peter

[sunggekun]

> > I have an VIA EPIA CN13000G board , and bought five SST49LF008A
> > chips from internet.
>
> I'm afraid those chips can not work on that board.
> > No EEPROM/flash device found.
> >
> > Also i tried to flash original BIOS rom (SST49LF004B), it work fine
> > (read/write).
> > So what did i miss? Could someone tell me what to do ?
>
> I believe your original chip is SST49LF040B, not 004B. 004B and 008A
> understand only Firmware commands (they are FWH-compatible) while
> 040B and 080A respond to "LPC Memory Read" commands and are called
> LPC chips.
>
> I suggest trying to find SST49LF080A-33-4C-NHE chips instead.
>
> //Peter

Hi Peter ,
I had checked the original BIOS chip again, it's SST49LF004B,
and the flashrom output:

# ./flashrom
 Calibrating delay loop... ok
 No LinuxBIOS table found.
 Found chipset "VT8237": Enabling flash write... OK.
 Found board "VIA EPIA-CN": Enabling flash write... OK.
 Found chip "SST SST49LF004A/B" (512KB) at physical address 0xfff80000

any ideal? Is it possible all the SST49LF008A chips are broken ?

[Corey Osgood]

On Fri, Dec 5, 2008 at 2:30 AM, sunggekun  wrote:
> > > I have an VIA EPIA CN13000G board , and bought five SST49LF008A
> > > chips from internet.
> >
> > I'm afraid those chips can not work on that board.
> > > No EEPROM/flash device found.
> > >
> > > Also i tried to flash original BIOS rom (SST49LF004B), it work fine
> > > (read/write).
> > > So what did i miss? Could someone tell me what to do ?
> >
> > I believe your original chip is SST49LF040B, not 004B. 004B and 008A
> > understand only Firmware commands (they are FWH-compatible) while
> > 040B and 080A respond to "LPC Memory Read" commands and are called
> > LPC chips.
> >
> > I suggest trying to find SST49LF080A-33-4C-NHE chips instead.
> >
> > //Peter
>
> Hi Peter ,
> I had checked the original BIOS chip again, it's SST49LF004B,
> and the flashrom output:
>
> # ./flashrom
>  Calibrating delay loop... ok
>  No LinuxBIOS table found.
>  Found chipset "VT8237": Enabling flash write... OK.
>  Found board "VIA EPIA-CN": Enabling flash write... OK.
>  Found chip "SST SST49LF004A/B" (512KB) at physical address 0xfff80000
>
> any ideal? Is it possible all the SST49LF008A chips are broken ?

SST49LF004B is LPC/FWH, but SST49LF008A is only FWH [1], the former was the
stock chip on my board as well. I'm currently using a Winbond W39V080A with
my board, a Jetway J7F2, or the SST chip Peter mentioned should work too.

-Corey

[1] http://www.sst.com/products.xhtml/serial_flash/49/SST49LF004B