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Patrick Georgi 08afc6d9e0 Unify CAR so the same compiled code does the right thing on both 
K8 and Fam10+ CPUs.

What this patch does:
1. Enable SSE (to get some more registers to play with)
2. Determine CPUID, and stash it in an XMM register, and reference
   value for comparison in another XMM register (mangled somewhat to
   simplify inequality comparisons)
3. Add a macro jmp_if_k8, which jumps if the CPU is K8
   (using an SSE compare)
4. Replace #if CAR_FAM10 sections with runtime checks using jmp_if_k8.
   This is pretty mechanical work. The macro uses local labels
   (1: and 2:) to prevent namespace issues
5. At one time, CPU_ADDR_BITS is used to fill a register. This is
   replaced with hardcoded values for both cases, and switched
   appropriately.
6. Disable SSE

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3951 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
 		2009-02-17 12:56:58 +00:00
documentation Rename almost all occurences of LinuxBIOS to coreboot. 2008-01-18 15:08:58 +00:00
payloads This is a safety measure, since the shipping buildrom fails badly at present. 2009-02-15 23:32:57 +00:00
src Unify CAR so the same compiled code does the right thing on both 2009-02-17 12:56:58 +00:00
targets This target is dead. 2009-02-13 20:20:21 +00:00
util Change 0x%p to %p. Thanks Stefan for catching the one I introduced in 3931. 2009-02-10 03:02:05 +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.