[coreboot] [solved] Re: [Flashrom] No EEPROM/flash device found. on Syntax SV266A

Paul Menzel paulepanter at users.sourceforge.net
Wed Mar 18 18:26:12 CET 2009

Am Donnerstag, den 19.03.2009, 00:13 +0800 schrieb FENG Yu Ning:
> 2009/3/18 Paul Menzel <paulepanter at users.sourceforge.net>:
> > probe_jedec: id1 0x25, id2 0xe4
> flash.h suggests that the manufacturer might be ASD:
> #define ASD_ID                  0x25
> I did a search and found that the flash chip should be 2Mb. Therefore
> I guess the flash chip is AE29F2008. Could you verify that?

Right. Removing the sticker sure helps. Atmel AT49F002NT is written on
the chip, which is supposed to be supported by Flashrom.

> >From this[0] page, it seems that AE29F2008 and AT29C020 behave in
> similar way. If you are trying to read the content, maybe you can try
> a force read.

$ sudo flashrom -f -r -c "AT49F002(N)T" test.rom
Calibrating delay loop... 490M loops per second, 100 myus = 174 us. OK.
No coreboot table found.
Found chipset "VIA VT8235", enabling flash write... OK.
Probing for Atmel AT49F002(N)T, 256 KB: probe_jedec: id1 0x25, id2 0xe4
No EEPROM/flash device found.
Force read (-f -r -c) requested, forcing chip probe success:
Probing for Atmel AT49F002(N)T, 256 KB: Found chip "Atmel AT49F002(N)T" (256 KB) at physical address 0xfffc0000.
Force reading flash... done.

test.rom also has not only null written to it, so it seems to be

What could be done, that the chip is auto-detected?

> Hope I am giving some useful information.

Yes. Thanks a lot. I should have figured this out by myself.

Anything else I can do?



> [0]http://www.geocities.com/mpu51/eprom/eprom.html

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