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Patrick Georgi 6444bd4547 i945: Reset IGD on boot
This is mostly necessary for reboot, but it doesn't hurt the boot process.
On reboot explicitely reset the integrated graphics, otherwise the VGABIOS
might not be able to reinitialize it properly, and you either have a still
of the last pre-reboot image, garbage or an empty screen, but no text-mode.

Change-Id: Ic3d6932fbaf720d88daaac7e4b09c3c0b9f0b0e2
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1178
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
2012-07-06 11:53:49 +02:00
3rdparty@1925339dfb Add 3rdparty as submodule 2012-05-01 00:08:37 +02:00
documentation Whitespace/typo/cosmetic fixes (trivial). 2010-09-23 18:48:27 +00:00
payloads libpayload: OHCI driver correct PCI BAR reading 2012-06-29 22:13:57 +02:00
src i945: Reset IGD on boot 2012-07-06 11:53:49 +02:00
util superiotool: Add support for git-based version number 2012-07-06 10:21:03 +02:00
.gitignore romcc: kill gcc warnings and .gitignore generated files 2012-02-07 22:34:42 +01:00
.gitmodules Add 3rdparty as submodule 2012-05-01 00:08:37 +02:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
Makefile Keep cscope.out when distclean. 2012-03-31 12:06:10 +02:00
Makefile.inc abuild: Build boards in parallel if possible 2012-05-10 22:11:16 +02:00
README Update README with newer version of the text from the web page 2011-06-15 10:16:33 +02:00

README

-------------------------------------------------------------------------------
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
------------------

 * gcc / g++
 * make

Optional:

 * doxygen (for generating/viewing documentation)
 * iasl (for targets with ACPI support)
 * gdb (for better debugging facilities on some targets)
 * ncurses (for 'make menuconfig')
 * 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.