SST39SF040

[Xavier Pegenaute]

Hi,

any one know why is not useful the SST39SF040 ? i'm using epia-m and it
works fine with SST39SF020 but with the other one the computer is dead.

I saw the technical papers and speak in the same way with 020 and 040
then it should be the same? or may be i don't know to read this papers
:-)

Xavi.

[ron minnich]

On 21 Nov 2003, Xavier Pegenaute wrote:
> any one know why is not useful the SST39SF040 ? i'm using epia-m and it
> works fine with SST39SF020 but with the other one the computer is dead.

did you build a 512K image or just a 256K image? this is a common mistake.

ron

[Xavier Pegenaute]

Hi,
> did you build a 512K image or just a 256K image? this is a common mistake.

I'm not so sure but i think that I made it fine. But i have some questions:

-------------------------------------------------------------------

#
# LinuxBIOS config file for: VIA epia mini-itx
#

# via epia
mainboard via/epia-m

# Enable Serial Console for debugging
option SERIAL_CONSOLE=1
option TTYS0_BAUD=115200
option DEFAULT_CONSOLE_LOGLEVEL=9
option DEBUG=1

# Use 256KB Standard Flash as Normal BIOS
option RAMTEST=1
option USE_GENERIC_ROM=1
option STD_FLASH=1
#option ZKERNEL_START=0xfffc0000
#option ROM_SIZE=262144
option ROM_SIZE=524288

# payload size = 192KB
#option PAYLOAD_SIZE=196608
#option PAYLOAD_SIZE=458752 <-- I thougt that was this value because 
                            <-- 256K - 64K = 196608.
option PAYLOAD_SIZE=1      <-- I tried also with this because is the
                           <-- parameter "bs" of "dd". With the other
                           <-- one the size of romimage was too big.

# use ELF Loader to load Etherboot
option USE_ELF_BOOT=1

# Use Etherboot as our payload
#payload /home/xavi/via-rhine.elf
payload /home/xavi/filo-0.4.1/filo.elf
#payload /bzImage.elf

target /home/xavi/epia-m
------------------------------------------------------------

Is there some better manual for the actual options of "freebios" than
"configmanual.ps"  think this is too old ?

Xavi.

[Leon Woestenberg]

Hello,
> > any one know why is not useful the SST39SF040 ? i'm using epia-m and it
> > works fine with SST39SF020 but with the other one the computer is dead.
>
> did you build a 512K image or just a 256K image? this is a common mistake.

I think it is safe to build a 256kB image but you have to put it in the
UPPER
half of the SST39SF040.

This worked for me. See my scriblings here:

http://www.coredinal.nl/~leon/epia/gentoo/

Regards,

Leon.

[ron minnich]

On Fri, 21 Nov 2003, Leon Woestenberg wrote:
> I think it is safe to build a 256kB image but you have to put it in the
> UPPER half of the SST39SF040.

yes, just do this:

cat romimage romimage > romimage.512k
flash_rom romimage.512k

done.

ron

[Peter Fox]

If you apply my patch to flash_rom I sent 6-Nov with the subject
"Add size option and checks to flash_rom" you can just use the
-s option to say the rom is 256k.

I haven't checked to see it you've committed the patch yet.

[ron minnich]

i thought i had commoitted this but please check and resend patch if 
needed.

ron