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Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to Contributions welcome!

Winbond W83977EF

Superiotool is a GPL'd user-space helper tool for LinuxBIOS development purposes (but may also be useful for other things). It allows you to detect which Super I/O you have on your mainboard, and it can provide detailed information about the register contents of the Super I/O.

Supported devices

Vendor Super I/O Detection Register dump Human-readable dump BIOS dumps LinuxBIOS dumps
Fintek F71805 Yes No Yes
Fintek F71872 Yes No Yes
ITE IT8702F Yes No No
ITE IT8705F Yes No No
ITE IT8708F Yes Yes No
ITE IT8710F Yes No No
ITE IT8712F Yes Yes No
ITE IT8716F Yes Yes No
ITE IT8718F Yes Yes No
ITE IT8726F ? ? No
NSC1 PC8374 Yes No Yes
SMSC FDC37N769 Yes Yes No
Winbond W83697HF/F Yes Yes No
Winbond W83627EHF/EF/EHG/EG Yes Yes No

1 Previosly National Semiconductor, now bought by Winbond.


$ svn co svn://
$ make
$ sudo make install


Probe/detect the Super I/O in your mainboard:

$ superiotool

Register dump as table of hex-values (if the Super I/O is detected):

$ superiotool -d

Detailed register dump in human-readable format:

$ superiotool -D

Please see the README for further information.

GNU head This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.