[flashrom] Abit VA6 / Atmel AT49F002NT

[Mattias Mattsson]

On Tue, Sep 07, 2010 at 08:23:50PM +0200, Uwe Hermann wrote:
> On Sun, Aug 15, 2010 at 07:15:13AM +0200, Mattias Mattsson wrote:
> > Hi,
> > 
> > I have tested flashrom r1138 on an Abit VA6 with Atmel AT49F002NT
> > flash. Probe, read, erase, write all work together with this patch:
> > http://www.coreboot.org/pipermail/flashrom/2010-August/004439.html
> > 
> > lspci crashes with the -xxx option on this board (the lspci manpage
> > mentions this could happen) so output is with -x only.
>  
> 
> 
> > flashrom v0.9.2-r1138 on Linux 2.6.32-5-686 (i686), built with libpci 3.1.7, GCC 4.4.5 20100728 (prerelease), little endian
> > flashrom is free software, get the source code at http://www.flashrom.org
> > 
> > Calibrating delay loop... OS timer resolution is 3 usecs, 225M loops per second, 10 myus = 11 us, 100 myus = 102 us, 1000 myus = 1000 us, 10000 myus = 10049 us, 12 myus = 13 us, OK.
> > Initializing internal programmer
> > No coreboot table found.
> > DMI string system-manufacturer: "VIA Technologies, Inc."
> > DMI string system-product-name: "VT82C692BX"
> > DMI string system-version: " "
> > DMI string baseboard-manufacturer: " <http://www.abit.com.tw>"
> > DMI string baseboard-product-name: "693A-686A(VA6)"
> > DMI string baseboard-version: " "
> > DMI string chassis-type: "Unknown"
> > Found chipset "VIA VT82C69x", enabling flash write... chipset PCI ID is 1106:0691, OK - searching further chips.
> > Found chipset "VIA VT82C686A/B", enabling flash write... chipset PCI ID is 1106:0686, OK.
> > This chipset supports the following protocols: Non-SPI.
> > Disabling flash write protection for board "abit VA6"... 
> > VIA Apollo ACPI: Dropping GPIO04.
> > OK.
> [...]
> > Found chip "Atmel AT49F002(N)T" (256 KB, Parallel) at physical address 0xfffc0000.
> [...]
> > ===
> > This flash part has status UNTESTED for operations: ERASE
> > The test status of this chip may have been updated in the latest development
> > version of flashrom. If you are running the latest development version,
> > please email a report to flashrom at flashrom.org if any of the above operations
> > work correctly for you with this flash part. Please include the flashrom
> > output with the additional -V option for all operations you tested (-V, -Vr,
> > -Vw, -VE), and mention which mainboard or programmer you tested.
> > Thanks for your help!
> > ===
> > Flash image seems to be a legacy BIOS. Disabling checks.
> > Writing flash chip... Erasing flash chip... Looking at blockwise erase function 0... trying... 0x000000-0x01ffff, 0x020000-0x037fff, 0x038000-0x039fff, 0x03a000-0x03bfff, 0x03c000-0x03ffff, ERASE FAILED at 0x0003c000! Expected=0xff, Read=0x68, failed byte count from 0x0003c000-0x0003ffff: 0x3f47
> > ERASE FAILED!
> 
>   ^^^^^^^^^^^^^
> 
> > 
> > Looking at blockwise erase function 1... trying... 0x000000-0x03ffff, 
> > SUCCESS.
> > Programming page: address: 0x00000000 [...] DONE!
> > COMPLETE.
> > Verifying flash... VERIFIED.          
> 
> This looks strange, erase FAILED but the write seems to have been
> successful anyway? Did you use the correct, patched flashrom version
> here? Can you retry with latest svn (patch was merged I think)?

I did som testing. It seems like flashrom have to run its erase
routine twice to get error-free output after something is written to
the flash chip:

# flashrom -w random.bin

# flashrom -VE
(...)
Erasing flash chip... Looking at blockwise erase function 0... trying... 0x000000-0x01ffff, 0x020000-0x037fff, 0x038000-0x039fff, 0x03a000-0x03bfff, 0x03c000-0x03ffff, ERASE FAILED at 0x0003c000! Expected=0xff, Read=0x41, failed byte count from 0x0003c000-0x0003ffff: 0x3fb9
ERASE FAILED!

Looking at blockwise erase function 1... trying... 0x000000-0x03ffff, 
SUCCESS.

# flashrom -VE (again)
(...)
Erasing flash chip... Looking at blockwise erase function 0... trying... 0x000000-0x01ffff, 0x020000-0x037fff, 0x038000-0x039fff, 0x03a000-0x03bfff, 0x03c000-0x03ffff, 
SUCCESS.


# flashrom -w va6.bin (orignal bios dumped with flashrom -r)

# flashrom -VE
(...)
Erasing flash chip... Looking at blockwise erase function 0... trying... 0x000000-0x01ffff, 0x020000-0x037fff, 0x038000-0x039fff, 0x03a000-0x03bfff, 0x03c000-0x03ffff, ERASE FAILED at 0x0003c000! Expected=0xff, Read=0x68, failed byte count from 0x0003c000-0x0003ffff: 0x3f47
ERASE FAILED!

Looking at blockwise erase function 1... trying... 0x000000-0x03ffff, 
SUCCESS.

# flashrom -VE (again)
(...)
Erasing flash chip... Looking at blockwise erase function 0... trying... 0x000000-0x01ffff, 0x020000-0x037fff, 0x038000-0x039fff, 0x03a000-0x03bfff, 0x03c000-0x03ffff, 
SUCCESS.


-mattias