coreboot-kgpe-d16

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Ronald G. Minnich ea1522b016 This dialogue on email was useful and hence included. failover.inc MUST come after enable_sse or your CPU will hang. > Can you say why? yes. if you compile failover.c with romcc options that include sse, then you'll see code like this in failover.inc: mov eax, %xmm0 This will hang if you have not first enabled sse. Verified yesterday on the dell s1850. > > Does it hang in the SSE code or in the failover code? It will hang in failover code, if that code was compiled with sse enabled AND if the sse registers are used. > > Does this mean that failover requires SSE in order to work? It may or it may not. But if you compile it with romcc options that include sse, and it uses sse without sse being enabled, it will hang. This is a particularly nasty bug in that the failover code is not guaranteed to compile in a way that sse is used, even if sse is enabled; hence, this could be very hard to catch. I'm lucky this bug appeared as soon as it did. Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Acked-by: Peter Stuge <peter@stuge.se> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4746 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1		2009-10-08 17:10:20 +00:00
documentation	Remove MAINBOARD_OPTIONS, which is a relic from early	2009-09-29 17:28:13 +00:00
payloads	Update Coreinfo to use TAG_FORWARD in tables.	2009-08-24 15:25:11 +00:00
src	This dialogue on email was useful and hence included.	2009-10-08 17:10:20 +00:00
targets	Major CONFIG_IRQ_TABLE_COUNT fixing and cleanups. Some of these boards	2009-10-07 21:51:33 +00:00
util	fix building on Linux again, working around crude runtime OS detection.	2009-10-05 10:23:36 +00:00
COPYING	update license template.	2006-08-12 22:03:36 +00:00
Makefile	Backport facility to specify a local coreboot version suffix from v3.	2009-10-05 13:55:28 +00:00
NEWS	Rename almost all occurences of LinuxBIOS to coreboot.	2008-01-18 15:08:58 +00:00
README	Improvements for the coreboot v2 README:	2009-04-17 17:11:39 +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 or a bootloader.


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
 * python
 * perl

Optional:

 * doxygen (for generating/viewing documentation)
 * iasl (for targets with ACPI support)
 * gdb (for better debugging facilities on some targets)


Building coreboot
-----------------

Please consult http://www.coreboot.org/Documentation 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 (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.