[flashrom] Flashrom failure

[David Hendricks]

You're fine :-) Apparently M5A99X-EVO-R20-ASUS-1302.CAP is not exactly 8MB,
which is the size of your flash chip (W25Q64). This is just a simple sanity
check flashrom uses to help prevent flashing the wrong file to your chip.

I took a quick look at a BIOS image from Asus' website and it appears that
they append 2KB to their BIOS image:
007ff060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
*
00800780  50 45 49 45 2b ac f5 ff  10 00 00 00 00 00 00 00
 |PEIE+...........|
00800790  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 |................|
*
008007f0  e9 0d e0 ff ff 00 00 10  00 00 78 56 00 00 f0 ff
 |..........xV....|
00800800

Usually this junk vendors append to their BIOSes is benign, but you never
really know... I recommend looking around to see if anyone else has had
success flashing this board using Flashrom. I do not recommend bypassing
the size check or truncating the extra 2KB unless you have a means of
recovering (Backup BIOS ROM, external programmer, etc).

On Tue, Jan 8, 2013 at 5:26 PM, Leslie Rhorer <lrhorer at mygrande.net> wrote:

>
> I don't think I am in any jeopardy, but I need to make sure, because an
> attempted flashrom write failed.  In addition, I would like to get it to
> work, because it as been recommended I upgrade the BIOS due to issues in
> lm-sensors.  When I attempted to upgrade the BIOS, I got this error:
>
> RAID-Server:/RAID/Server-Main/Downloads/Asus Motherboards/M5A99X EVO R2.0#
> flashrom -w M5A99X-EVO-R20-ASUS-1302.CAP
> flashrom v0.9.4-r1395 on Linux 2.6.32-5-amd64 (x86_64), built with libpci
> 3.1.7, GCC 4.4.5, little endian
> flashrom is free software, get the source code at http://www.flashrom.org
>
> Calibrating delay loop... OK.
> Found chipset "AMD SB700/SB710/SB750/SB850". Enabling flash write... OK.
> This chipset supports the following protocols: LPC, FWH, SPI.
> Found Winbond flash chip "W25Q64" (8192 kB, SPI) at physical address
> 0xff800000.
> Error: Image size doesn't match
>
>         I then verified the flash image against the backup image and it
> apparently passed:
>
> RAID-Server:/RAID/Server-Main/Downloads/Asus Motherboards/M5A99X EVO R2.0#
> flashrom -v Safety_BIOS.cap
> flashrom v0.9.4-r1395 on Linux 2.6.32-5-amd64 (x86_64), built with libpci
> 3.1.7, GCC 4.4.5, little endian
> flashrom is free software, get the source code at http://www.flashrom.org
>
> Calibrating delay loop... OK.
> Found chipset "AMD SB700/SB710/SB750/SB850". Enabling flash write... OK.
> This chipset supports the following protocols: LPC, FWH, SPI.
> Found Winbond flash chip "W25Q64" (8192 kB, SPI) at physical address
> 0xff800000.
> Flash image seems to be a legacy BIOS. Disabling coreboot-related checks.
> Reading old flash chip contents... done.
> Verifying flash... VERIFIED.
>
>         Am I in jeopardy, here?  How can I get flashrom to properly write
> the new BIOS?
>
> _______________________________________________
> flashrom mailing list
> flashrom at flashrom.org
> http://www.flashrom.org/mailman/listinfo/flashrom
>



-- 
David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
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