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Duncan Laurie 6a342cb699 samus: Disable self refresh and MRC cache on broadwell
Add workarounds for power and/or lpddr3 issues on Broadwell SKU.

BUG=chrome-os-partner:29787,chrome-os-partner:29117
BRANCH=None
TEST=build and boot on samus

Original-Change-Id: If99346212c10ad6026250e48bedd916611e2cb8c
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/208154
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit c3ee57114315320b542f53645ffb168ad654b756)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ie28f3ad65000a627ba64486e0f16493e8101cef3
Reviewed-on: http://review.coreboot.org/8214
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-19 22:17:02 +01:00
3rdparty@5eb7a9cf08 3rdparty: Update to latest commit in blobs repository 2015-01-16 21:31:58 +01:00
documentation Doxygen: add a "simple" output config and make target 2015-01-08 21:59:17 +01:00
payloads libpayload: Let GDB stub read/write memory with aligned MMIO words 2015-01-12 05:56:16 +01:00
src samus: Disable self refresh and MRC cache on broadwell 2015-01-19 22:17:02 +01:00
util cbmem: Add support for new 'coreboot' compatible device tree binding 2015-01-13 21:31:50 +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 Doxygen: add a "simple" output config and make target 2015-01-08 21:59:17 +01:00
Makefile.inc Revert "vboot2: add verstage" 2015-01-14 19:28:19 +01:00
README
toolchain.inc Revert "vboot2: add verstage" 2015-01-14 19:28:19 +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.