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Aaron Durbin 052942923b device tree: track init times
With the introduction of a monotonic timer it is possible to
track the individual times of each device's init() call. Add this
ability behind a HAVE_MONOTONIC_TIMER option.

Example log messages:
Root Device init 5 usecs
CPU_CLUSTER: 0 init 66004 usecs
PCI: 00:00.0 init 1020 usecs
PCI: 00:02.0 init 456941 usecs
PCI: 00:13.0 init 3 usecs
PCI: 00:14.0 init 3 usecs
PCI: 00:15.0 init 92 usecs
PCI: 00:15.1 init 37 usecs
PCI: 00:15.2 init 36 usecs
PCI: 00:15.3 init 35 usecs
PCI: 00:15.4 init 35 usecs
PCI: 00:15.5 init 36 usecs
PCI: 00:15.6 init 35 usecs
PCI: 00:16.0 init 3666 usecs
PCI: 00:17.0 init 63 usecs
PCI: 00:1b.0 init 3 usecs
PCI: 00:1c.0 init 89 usecs
PCI: 00:1c.1 init 15 usecs
PCI: 00:1c.2 init 15 usecs
PCI: 00:1c.3 init 15 usecs
PCI: 00:1c.4 init 15 usecs
PCI: 00:1c.5 init 16 usecs
PCI: 00:1d.0 init 4 usecs
PCI: 00:1f.0 init 495 usecs
PCI: 00:1f.2 init 29 usecs
PCI: 00:1f.3 init 4 usecs
PCI: 00:1f.6 init 4 usecs

Change-Id: Ibe499848432c7ab20166ab10d6dfb07db03eab01
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/3162
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
2013-05-01 21:36:16 +02:00
3rdparty@ba8caa30bd Update 3rdparty mark to latest repository 2013-03-15 19:09:08 +01:00
documentation documentation: Complete the AMD-S3.txt 2013-04-16 02:31:08 +02:00
payloads Eliminate use of pointers in coreboot table 2013-04-20 05:18:15 +02:00
src device tree: track init times 2013-05-01 21:36:16 +02:00
util superiotool: add CR dump for W83627UHG = NCT6627UD 2013-04-22 17:07:13 +02:00
.gitignore add a few entries to .gitignore 2013-01-10 22:51:20 +01:00
.gitmodules gitmodules: Ignore 3rdparty in "diff family" 2013-03-16 04:07:14 +01:00
.gitreview add .gitreview 2012-11-01 23:13:39 +01:00
COPYING
Makefile build system: Retire REQUIRES_BLOB 2013-02-19 11:00:41 +01:00
Makefile.inc rmodule: add rmodules class and new type 2013-03-18 20:46:40 +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.