Go to file
Paul Menzel 60ef456f46 console/Kconfig: Enable CBMEM console by default
Currently on AMD boards no romstage messages can be saved in CBMEM, so
only messages from ramstage on will be stored in CBMEM. Other than
that nothing changes.

Enabling CBMEM console by default does not noticeably decrease boot
time as the messages are directly written to CAR or RAM.

The board status script under `util/board_status/` reads the coreboot
messages from CBMEM, which are then uploaded to the board status
repository. With CBMEM console disabled by default, currently no
coreboot console messages are uploaded to the board status repository,
although it is important to have those.

Enabling CBMEM console by default improves this situation, so that for
all boards at least ramstage messages are stored in the board status
repository.

Change-Id: I8d5a58c078325c43a0317bcfaafc722d039aab0b
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5350
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)
2015-03-10 23:42:22 +01:00
3rdparty@2bc495fd31 3rdparty: Update submodule to get Tegra 132 binaries 2015-03-07 17:50:58 +01:00
documentation documentation: begin documenting our use of git submodules 2015-02-13 09:33:24 +01:00
payloads libpayload: Don't try to free individual xhci device slots 2015-03-04 20:46:07 +01:00
src console/Kconfig: Enable CBMEM console by default 2015-03-10 23:42:22 +01:00
util crossgcc: fix copy-paste mistake on riscv make target 2015-03-10 22:19:42 +01:00
.gitignore .gitignore: add the doxygen directory. 2014-12-14 23:30:45 +01:00
.gitmodules nvidia/cbootimage: avoid upstream's build system 2014-10-02 10:26:58 +02:00
.gitreview
COPYING
Makefile build system: Allow running make what-jenkins-does without ccache 2015-02-17 18:48:14 +01:00
Makefile.inc crossgcc: Add RISC-V support 2015-03-08 13:56:08 +01:00
README
toolchain.inc build: mipsel cross compiler support 2015-02-24 17:28:23 +01:00

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.