[flashrom] undetected Intel X79 (8086:1d41) flash chip

[Stefan Tauner]

On Tue, 9 Oct 2012 22:10:59 +0300
Alexey Dobriyan <adobriyan at gmail.com> wrote:

> This comes from Sandy Bridge mobo.
> Is it supported in trunk?
> 
> I can experiment with the system a bit if necessary.
> […]
> 0x54: 0x000f0000 FREG0: WARNING: Flash Descriptor region (0x00000000-0x0000ffff) is read-only.
> 0x58: 0x0fff0800 FREG1: BIOS region (0x00800000-0x00ffffff) is read-write.
> 0x5C: 0x07ff0020 FREG2: WARNING: Management Engine region (0x00020000-0x007fffff) is locked.
> 0x60: 0x00000fff FREG3: Gigabit Ethernet region is unused.
> 0x64: 0x001f0010 FREG4: Platform Data region (0x00010000-0x0001ffff) is read-write.
> 0x74: 0x00000000 (PR0 is unused)
> 0x78: 0x00000000 (PR1 is unused)
> 0x7C: 0x00000000 (PR2 is unused)
> 0x80: 0x00000000 (PR3 is unused)
> 0x84: 0x00000000 (PR4 is unused)
> Please send a verbose log to flashrom at flashrom.org if this board is not listed on
> http://flashrom.org/Supported_hardware#Supported_mainboards yet.
> Writes have been disabled. You can enforce write support with the
> ich_spi_force programmer option, but it will most likely harm your hardware!
> If you force flashrom you will get no support if something breaks.

Hello Alexey,

thanks for your report!

The problem is the locked ME region as quoted above. We are working on
unlocking it, but intel does not provide us any documentation so please
do not expect a solution soon.

Can you please tell us which Supermicro board that is so that i can add
it to our list of unsupported boards in the meantime?

> […]
> ===
> SFDP has autodetected a flash chip which is not natively supported by flashrom yet.
> All standard operations (read, verify, erase and write) should work, but to support all possible features we need to add them manually.
> You can help us by mailing us the output of the following command to flashrom at flashrom.org: 
> 'flashrom -VV [plus the -p/--programmer parameter (if needed)]'
> Thanks for your help!
> ===
> Found Unknown flash chip "SFDP-capable chip" (16384 kB, SPI) at physical address 0x0.

We are aware of the chip in question (Numonyx N25Q128) and it will be
added natively eventually. Until then the SFDP abstraction should work
fine (in cases where the chipset is not locked down).

-- 
Kind regards/Mit freundlichen Grüßen, Stefan Tauner