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Paul Menzel bf725b48f7 superio/nuvoton/nct5572d: Add PS/2 presence detect
On certain Super I/O devices, when a PS/2 mouse is not present on the
auxiliary channel both channels will cease to function if the
auxiliary channel is probed while the primary channel is active.
Therefore, knowledge of mouse presence must be gathered by coreboot
during early boot, and used to enable or disable the auxiliary PS/2
port before control is passed to the operating system.

This is added in commit 448e3863 (drivers/pc80: Add PS/2 mouse
presence detect).

Update the Nuvoton NCT5572D driver to flag the auxiliary channel as
disabled if no device was detected. The code is copied from the Winbond
W83667HG-A driver.

Note, the ACPI changes are not part of this commit.

TEST=Currently, on the ASRock E350M1, PS/2 does not work. With this
change, a PS/2 keyboard works fine in SeaBIOS, GRUB in MBR, and Debian
GNU/Linux Sid/unstable with Linux 3.19.

```
[    1.185195] i8042: PNP: No PS/2 controller found. Probing ports directly.
[    1.189110] serio: i8042 KBD port at 0x60,0x64 irq 1
[    1.189133] serio: i8042 AUX port at 0x60,0x64 irq 12
[    1.189970] mousedev: PS/2 mouse device common for all mice
```

Change-Id: I7f9be348d295e70437bef089d4c2173169f38459
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: https://review.coreboot.org/13618
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
2016-02-09 20:34:15 +01:00
3rdparty 3rdparty/chromeec: Add Chrome EC firmware sources 2016-02-05 10:34:17 +01:00
Documentation Documentation: Add Quark EDK2 build instructions for Linux 2016-02-09 19:22:06 +01:00
payloads Kconfig: Move payloads section to payloads/Kconfig 2016-02-09 20:31:52 +01:00
src superio/nuvoton/nct5572d: Add PS/2 presence detect 2016-02-09 20:34:15 +01:00
util lint: test for assembler dialect switches 2016-02-07 00:36:46 +01:00
.clang-format Provide coreboot coding style formalisation file for clang-format 2015-11-10 00:49:03 +01:00
.gitignore .gitignore: add output files for various make targets 2015-11-24 22:35:34 +01:00
.gitmodules 3rdparty/chromeec: Add Chrome EC firmware sources 2016-02-05 10:34:17 +01:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
MAINTAINERS MAINTAINERS: Designate Intel maintainers for FSP 1.0 Baytrail 2015-12-30 20:06:52 +01:00
Makefile build system: avoid setting HOSTCC to " gcc" 2016-02-02 14:35:11 +01:00
Makefile.inc build system: Add another post-processing step 2016-02-03 18:51:50 +01:00
README README: improve description of compiler requirements 2015-07-30 05:11:33 +02:00
toolchain.inc toolchain.inc: Update comments 2016-01-18 03:58:33 +01:00

-------------------------------------------------------------------------------
coreboot README
-------------------------------------------------------------------------------

coreboot is a Free Software project aimed at replacing the proprietary BIOS
(firmware) found in most computers.  coreboot performs a little bit of
hardware initialization and then executes additional boot logic, called a
payload.

With the separation of hardware initialization and later boot logic,
coreboot can scale from specialized applications that run directly
firmware, run operating systems in flash, load custom
bootloaders, or implement firmware standards, like PC BIOS services or
UEFI. This allows for systems to only include the features necessary
in the target application, reducing the amount of code and flash space
required.

coreboot was formerly known as LinuxBIOS.


Payloads
--------

After the basic initialization of the hardware has been performed, any
desired "payload" can be started by coreboot.

See http://www.coreboot.org/Payloads for a list of supported payloads.


Supported Hardware
------------------

coreboot supports a wide range of chipsets, devices, and mainboards.

For details please consult:

 * http://www.coreboot.org/Supported_Motherboards
 * http://www.coreboot.org/Supported_Chipsets_and_Devices


Build Requirements
------------------

 * make
 * gcc / g++
   Because Linux distribution compilers tend to use lots of patches. coreboot
   does lots of "unusual" things in its build system, some of which break due
   to those patches, sometimes by gcc aborting, sometimes - and that's worse -
   by generating broken object code.
   Two options: use our toolchain (eg. make crosstools-i386) or enable the
   ANY_TOOLCHAIN Kconfig option if you're feeling lucky (no support in this
   case).
 * iasl (for targets with ACPI support)

Optional:

 * doxygen (for generating/viewing documentation)
 * gdb (for better debugging facilities on some targets)
 * ncurses (for 'make menuconfig' and 'make nconfig')
 * flex and bison (for regenerating parsers)


Building coreboot
-----------------

Please consult http://www.coreboot.org/Build_HOWTO for details.


Testing coreboot Without Modifying Your Hardware
------------------------------------------------

If you want to test coreboot without any risks before you really decide
to use it on your hardware, you can use the QEMU system emulator to run
coreboot virtually in QEMU.

Please see http://www.coreboot.org/QEMU for details.


Website and Mailing List
------------------------

Further details on the project, a FAQ, many HOWTOs, news, development
guidelines and more can be found on the coreboot website:

  http://www.coreboot.org

You can contact us directly on the coreboot mailing list:

  http://www.coreboot.org/Mailinglist


Copyright and License
---------------------

The copyright on coreboot is owned by quite a large number of individual
developers and companies. Please check the individual source files for details.

coreboot is licensed under the terms of the GNU General Public License (GPL).
Some files are licensed under the "GPL (version 2, or any later version)",
and some files are licensed under the "GPL, version 2". For some parts, which
were derived from other projects, other (GPL-compatible) licenses may apply.
Please check the individual source files for details.

This makes the resulting coreboot images licensed under the GPL, version 2.