Go to file
Aaron Durbin 67633a558a baytrail: use MCRX in iosf access functions
While most registers accesses don't need the use of the MCRX
register (upper 24 bits of address) the MCRX register should
be protected. The reference code could be doing accesses to
registers that initialized the MCRX register. Thus, any access
after that should ensure the MCRX register is initialized
appropriately.

BUG=None
BRANCH=None
TEST=Verified assembly output. Also, built and booted through
     depthcharge.

Change-Id: I4d6cfbe6bb1666790c69778b8f2c8baeaf015264
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174643
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: http://review.coreboot.org/4909
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-02-27 06:12:25 +01:00
3rdparty@324ec3cb64 3rdparty: update to current HEAD 2014-01-11 10:57:34 +01:00
documentation documentation: Change the file name of document for building Coreboot 2013-12-09 11:13:35 +01:00
payloads libpayload/ahci: Fix a warning by decompartmentalise the AHCI driver. 2014-02-15 14:14:36 +01:00
src baytrail: use MCRX in iosf access functions 2014-02-27 06:12:25 +01:00
util crossgcc: Update IASL to latest version (20140114) 2014-02-14 02:52:45 +01:00
.gitignore gitignore: ignore the crossgcc/build-{arch}-{archive} 2013-12-09 11:13:53 +01:00
.gitmodules gitmodules: Fix 3rdparty updates 2013-06-28 00:56:43 +02:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
Makefile Revert "Makefile: Check $CC variable returned from xcompile is not empty." 2014-01-26 15:46:44 +01:00
Makefile.inc utils/crossgcc: Refactor Makefiles for separate arm/i386. 2014-02-12 21:25:25 +01:00
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.