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Carl-Daniel Hailfinger 734d09e05b First part of heterogenous dualchannel support.
Do not allow non-identical DIMMs yet, but prepare the code.

Calculate tCL related settings per DIMM in a dual channel setup. The
check for compatibility will come in a later patch, but since DIMMs
still have to be identical, this does not hurt.

Factor out tRC calculation to prepare for per-DIMM calculation.

Add diagnostic messages to tRC code.

Test booted to FILO, behaviour is identical if you ignore the added
debug messages (which are switched off by default).

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3867 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2009-01-16 03:44:41 +00:00
documentation Rename almost all occurences of LinuxBIOS to coreboot. 2008-01-18 15:08:58 +00:00
payloads libpayload: Fix immediate rebuild after a clean 2008-11-25 16:41:21 +00:00
src First part of heterogenous dualchannel support. 2009-01-16 03:44:41 +00:00
targets In the process of trying to debug some HT sync problems I added lots of 2008-12-22 09:53:24 +00:00
util flashrom: Add ICH opcode debugging. 2009-01-15 02:13:18 +00:00
COPYING update license template. 2006-08-12 22:03:36 +00:00
NEWS Rename almost all occurences of LinuxBIOS to coreboot. 2008-01-18 15:08:58 +00:00
README Rename almost all occurences of LinuxBIOS to coreboot. 2008-01-18 15:08:58 +00:00

README

-------------------------------------------------------------------------------
Coreboot README
-------------------------------------------------------------------------------

Coreboot is a Free Software project aimed at replacing the proprietary
BIOS you can find in most of today's computers.

It performs just a little bit of hardware initialization and then executes
one of many possible payloads, e.g. a Linux kernel.


Payloads
--------

After the basic initialization of the hardware has been performed, any
desired "payload" can be started by coreboot. Examples include:

 * A Linux kernel
 * FILO (a simple bootloader with filesystem support)
 * GRUB2 (a free bootloader; support is in development)
 * OpenBIOS (a free IEEE1275-1994 Open Firmware implementation)
 * Open Firmware (a free IEEE1275-1994 Open Firmware implementation)
 * SmartFirmware (a free IEEE1275-1994 Open Firmware implementation)
 * GNUFI (a free, UEFI-compatible firmware)
 * Etherboot (for network booting and booting from raw IDE or FILO)
 * ADLO (for booting Windows 2000 or OpenBSD)
 * Plan 9 (a distributed operating system)
 * memtest86 (for testing your RAM)


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


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 (mostly those derived from the Linux kernel) 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.