[flashrom] [PATCH] Add Nvidia nForce MCP6x/MCP7x series SPI flashing support

[Christian Schmitt]

flashrom -p internal:laptop=force_I_want_a_brick -V -c "unknown SPI chip 
(RDID)"
flashrom v0.9.2-runknown on Linux 2.6.32-gentoo-r8 (i686), built with libpci 
3.1.4, GCC 4.4.3, little endian
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... OS timer resolution is 2 usecs, 373M loops per 
second, 10 myus = 11 us, 100 myus = 95 us, 1000 myus = 935 us, 10000 myus = 
9868 us, 8 myus = 9 us, OK.
Initializing internal programmer
No coreboot table found.
DMI string system-manufacturer: "LENOVO"
DMI string system-product-name: "20021,2959"
DMI string system-version: "Lenovo Ideapad S12"
DMI string baseboard-manufacturer: "LENOVO"
DMI string baseboard-product-name: "MoutCook"
DMI string baseboard-version: "Not Applicable"
DMI string chassis-type: "Notebook"
Laptop detected via DMI
========================================================================
WARNING! You seem to be running flashrom on a laptop.
Laptops, notebooks and netbooks are difficult to support and we recommend
to use the vendor flashing utility. The embedded controller (EC) in these
machines often interacts badly with flashing.
See http://www.flashrom.org/Laptops for details.

If flash is shared with the EC, erase is guaranteed to brick your laptop
and write may brick your laptop.
Read and probe may irritate your EC and cause fan failure, backlight
failure and sudden poweroff.
You have been warned.
========================================================================
Proceeding anyway because user specified laptop=force_I_want_a_brick
Found chipset "NVIDIA MCP79", enabling flash write... chipset PCI ID is 
10de:0aae, This chipset is not really supported yet. Guesswork...
ISA/LPC bridge reg 0x8a contents: 0x00, bit 6 is 0, bit 5 is 0
Guessed flash bus type is LPC
Found SMBus device 10de:0aa2 at 00:03:2
SPI BAR is at 0xc0080000, after clearing low bits BAR is at 0xc0080000
Strange. MCP SPI BAR is valid, but chipset apparently doesn't have SPI 
enabled.
Please send the output of "flashrom -V" to flashrom at flashrom.org to help us 
finish support for your chipset. Thanks.
LPC on this chipset is not supported yet.
OK.
This chipset supports the following protocols: LPC.
Probing for Generic unknown SPI chip (RDID), 0 KB: skipped.
No EEPROM/flash device found.
Note: flashrom can never write if the flash chip isn't found automatically.