coreboot-kgpe-d16

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David Hendricks 77acf42819 pit: setup voltage rails before system clocks This moves the call to setup_power() before system_clock_init(). This causes the PMIC to set up the voltage rails earlier so that the CPU clock can be set up at a faster rate (in the follow-up patch). After system clock init, we re-initialize the PMIC's I2C bus since the input clock rate will have changed. Old-Change-Id: Ieb828ac25daad7ee95bfa4823aaaf161028c9c92 Reviewed-on: https://gerrit.chromium.org/gerrit/64744 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Ronald G. Minnich <rminnich@chromium.org> Tested-by: David Hendricks <dhendrix@chromium.org> Commit-Queue: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 6c133a84ef4a32c35577a266905e02af8c2d9278) pit: save setup_power() status and die later if needed Since system clock and console initialization now happen after power setup, we cannot print error messages in setup_power(). This patch re-factors the code a little bit to save the status of setup_power() so that if we get an error during setup_power() we will wait until we can actually print something before dying. Old-Change-Id: Id7ff477224b104b3c7e221c1d2df460ca9125f3b Reviewed-on: https://gerrit.chromium.org/gerrit/65009 Reviewed-by: Gabe Black <gabeblack@chromium.org> Commit-Queue: David Hendricks <dhendrix@chromium.org> Tested-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 0c89f922b20bc1291ac7ba7b2c22bdce911be7a4) Squashed two closely related commits. Change-Id: I3efe29412738959e698c89d26e682536ceabdff8 Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6403 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>		2014-07-29 21:49:50 +02:00
3rdparty@45f0c04fd7	acpigen: Add acpigen_emit_eisaid.	2014-06-01 01:24:53 +02:00
documentation	Documentation: Use correct file name for the build guide in the Makefile	2014-07-04 19:03:10 +02:00
payloads	libpayload: find source of input characters	2014-07-12 20:19:14 +02:00
src	pit: setup voltage rails before system clocks	2014-07-29 21:49:50 +02:00
util	util/board_status: use the right location of cbfstool	2014-07-28 23:18:56 +02:00
.gitignore	git-ignore site-local	2014-04-01 08:55:02 +02:00
.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	build system: avoid warning about missing .xcompile	2014-07-20 19:51:10 +02:00
Makefile.inc	build system: avoid more race conditions	2014-07-10 20:56:35 +02:00
README	Update README with newer version of the text from the web page	2011-06-15 10:16:33 +02:00
toolchain.inc	build: remove -ccopts mechanism	2014-06-29 09:22:13 +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.