[flashrom] successfully PROBE READ ERASE WRITE on "Acer Aspire 1520" Laptop

Carl-Daniel Hailfinger c-d.hailfinger.devel.2006 at gmx.net
Sat Mar 6 04:59:14 CET 2010

Hi Paweł,

thanks for your report. We generally recommend not to use flashrom on
laptops due to possible interactions with the embedded controllers on
laptops. It seems the embedded controller on your laptop doesn't cause
any problems which is good.
You're using a really old flashrom version which has problems with erase
on some Winbond W39* chips. This is fixed in flashrom 0.9.1 and later

On 05.03.2010 19:13, Paweł Stawicki wrote:
> I have successfully  PROBE READ  WRITE  and   ERASE (??)
> on my laptop "acer aspire 1520"
> The only bug that I get is an error when
> I'm ERASEing
> (but  when I read the erased flash I get only 0xFF bytes
> and I can write again)
> root at stawel-laptop:~/bios/inny# flashrom -E
> Calibrating delay loop... OK.
> No coreboot table found.
> Found chipset "VIA VT8235", enabling flash write... OK.
> Found chip "Winbond W39V040A" (512 KB) at physical address 0xfff80000.
> Erasing flash chip... FAILED!
> ERROR at 0x00080000: Expected=0xff, Read=0x00
> root at stawel-laptop:~/bios/inny#

Could you please install a newer version of flashrom (at least 0.9.1,
preferably current svn) and send in the output of
flashrom -V
lspci -nnvvvxxx
superiotool -deV

If you don't have superiotool installed, don't worry, it's not that


"I do consider assignment statements and pointer variables to be among
computer science's most valuable treasures."
-- Donald E. Knuth

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