[flashrom] Report: Gigabyte X79-UP4 F5c write

[Stefan Tauner]

On 27 Nov 2013 23:41:34 -0500
"George Spelvin" <linux at horizon.com> wrote:

> After the built-in Q-Bios would not program the flash ("The current flash
> utility is outdated"), and failing to find where Gigabyte hid the DOS-based
> flash utilities, I fired up flashrom.
> 
> I got the latest r1764 from SVN, and it proceeded to complain
> about Macronix's ambiguous chip IDs:
> 
> [501]# flashrom -p internal
> flashrom v0.9.7-r1764 on Linux 3.12.1-00045-g27b879d64d (x86_64)
> flashrom is free software, get the source code at http://www.flashrom.org
> 
> Calibrating delay loop... OK.
> Found chipset "Intel X79". Enabling flash write... OK.
> Found Macronix flash chip "MX25L6405(D)" (8192 kB, SPI) at physical address 0xff800000.
> Found Macronix flash chip "MX25L6406E/MX25L6436E" (8192 kB, SPI) at physical address 0xff800000.
> Found Macronix flash chip "MX25L6445E" (8192 kB, SPI) at physical address 0xff800000.
> Multiple flash chip definitions match the detected chip(s): "MX25L6405(D)", "MX25L6406E/MX25L6436E", "MX25L6445E"
> Please specify which chip definition to use with the -c <chipname> option.
> 
> 
> After failing to read the chip ID without removing my motherboard,
> I found a high-resolution picture at
> 
> http://forums.overclockers.co.uk/showthread.php?t=18477560
> 
> (search for "The DualBIOS chips.")
> 
> This confirmed the Flash as MX25L6406E, so I added the appropriate -c
> option, and... success!


Hello George,

thanks for your report! Do you know which revision your board is? There
are two: 1.0 and 1.1
http://www.gigabyte.com/products/product-page.aspx?pid=4288
http://www.gigabyte.com/products/product-page.aspx?pid=4766

> It had to reboot a few times before popping into the BIOS, but
> it worked.
> 
> The only problem is that the BIOS settings were blown away (a fairly
> simple reset procedure) and my ethernet MAC address got reset to
> 88:88:88:88:87:88 (working on fixing that).
> 

That's a common issue and we can't very much about it. The locations of
sensible data are not standardized... but I'll add a note when I add
you board to the wiki information.

> 
> Looking in the -V output, I see some mention of
> 
> 0x54: 0x00000000 FREG0: Flash Descriptor region (0x00000000-0x00000fff) is read-write.
> 0x58: 0x07ff0000 FREG1: BIOS region (0x00000000-0x007fffff) is read-write.
> 0x5C: 0x01ff0003 FREG2: Management Engine region (0x00003000-0x001fffff) is read-write.
> 0x60: 0x00020001 FREG3: Gigabit Ethernet region (0x00001000-0x00002fff) is read-write.
> 
> 
> And, indeed, the 4K pages at 0x001000 and 0x002000 include the old MAC
> address in the first 8 bytes.  So let me try creating a layout file:
> 
> 000000:000fff descriptor
> 001000:002fff enet
> 003000:01ffff management
> 020000:7fffff bios
> 
> And try restoring that oprtion from the backup I took:
> 
> […]

Did that work out eventually?

-- 
Kind regards/Mit freundlichen Grüßen, Stefan Tauner