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Kein Yuan bc01a3df80 Baytrail: changes to USB3 PLL VCO and iCLK PLL current on BYT-M/D CPU
Intel will be making slight changes to USB3 PLL VCO and iCLK PLL current
on C0 stepping of BYT-M/D C0 stepping in order to meet the high demands
for these processors.

Pre-conversion materials are compatible with USB PLL VCO current increase.
Post-conversion materials ARE REQUIRED to be run with increased USB3 PLL
VCO current.

BUG=chrome-os-partner:31199
TEST=Boot Rambi, then read USHPHY_CDN_PLL_CONTROL and verify register
has new value.

Change-Id: Ie9c3d0afd54ea7ced2c76ebb948de95be0828fa0
Signed-off-by: Kein Yuan <kein.yuan@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/211337
Commit-Queue: Shawn Nematbakhsh <shawnn@chromium.org>
Tested-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
(cherry picked from commit df20eca47ca0ff33baf5d554ef11dd2b35706a5d)
Reviewed-on: https://chromium-review.googlesource.com/205970
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/217772
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Commit-Queue: Kenji Chen <kenji.chen@intel.com>
Tested-by: Kenji Chen <kenji.chen@intel.com>
2014-09-12 00:56:25 +00:00
configs veyron: Rename "veyron" board to "veyron_pinky" 2014-09-12 00:56:07 +00:00
documentation sconfig: rename lapic_cluster -> cpu_cluster 2013-02-14 07:07:20 +01:00
payloads veyron: Rename "veyron" board to "veyron_pinky" 2014-09-12 00:56:07 +00:00
src Baytrail: changes to USB3 PLL VCO and iCLK PLL current on BYT-M/D CPU 2014-09-12 00:56:25 +00:00
util Fix copyright header in util/exynos/*.py 2014-09-08 23:08:45 +00:00
.gitignore rmodules: add support for rmodtool 2014-03-31 22:25:57 +00:00
COMMIT-QUEUE.ini COMMIT-QUEUE.ini: Add documentation. 2013-11-01 14:08:42 +00:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
Makefile coreboot: Introduce stage-specific architecture for coreboot 2014-05-09 04:41:47 +00:00
Makefile.inc imgtec/danube: Build BIMG boot images 2014-09-01 11:06:36 +00:00
PRESUBMIT.cfg chromeos: Add PRESUBMIT.cfg 2013-05-01 14:31:10 -07:00
README Update README with newer version of the text from the web page 2011-06-15 10:16:33 +02:00
toolchain.inc arch/mips: Add base MIPS architecture support 2014-09-01 11:05:57 +00:00

-------------------------------------------------------------------------------
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.